Welding tool for automobile parts
By designing welding fixtures for automotive parts and utilizing positioning cylinders and magnetic fixing technology, the problem of inaccurate positioning of inner and outer reinforcing plates was solved, achieving high-precision welding and cost savings.
Patent Information
- Application Number
- CN202520132588.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-01-20
AI Technical Summary
The inner and outer reinforcing plates in the right suspension bracket assembly are not easy to fix and are not accurately positioned, resulting in poor welding precision, complicated operation and increased costs.
A welding fixture comprising a worktable, a first clamping assembly, a second clamping assembly, and a pushing mechanism was designed. The fixture achieves the fixation of the right suspension bracket and the accurate positioning and welding of the inner and outer reinforcing plates through a positioning cylinder, magnetic fixation, and a pushing cylinder.
It improved welding precision, simplified the operation process, reduced costs, and ensured the accuracy and efficiency of welding.
Smart Images
Figure CN223718695U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to welding frock technical field, especially a kind of welding frock for automobile parts. BACKGROUND
[0002] Right suspension bracket assembly is an important part in the engine suspension system of automobile, mainly used for supporting engine, reducing the influence of vibration and noise generated in the running process of engine on vehicle body, so as to improve the comfort and stability of automobile.
[0003] Right suspension bracket assembly is composed of right suspension bracket, inner reinforcing plate, outer reinforcing plate and other components, through the cooperative work of these components, effective support and damping of engine are realized;Right suspension bracket, inner reinforcing plate and outer reinforcing plate are usually welded together to enhance structural strength;During welding, the inner reinforcing plate is welded inside the right suspension bracket, as the right suspension bracket is a special-shaped structure, the two side walls of the bracket are not perpendicular and uneven, which brings inconvenience to the fixation and positioning of the inner reinforcing plate, and the operation is complicated, resulting in the reduction of welding precision;The outer reinforcing plate is welded outside the right suspension bracket, as the outer reinforcing plate is in vertical state during welding, which brings inconvenience to the fixation and positioning of the outer reinforcing plate, and the welding process usually results in poor welding precision due to inaccurate positioning, affecting subsequent installation;In addition, the inner reinforcing plate and the outer reinforcing plate are located at different positions of the right suspension bracket, and two sets of welding frock are needed for fixation, which is complicated and increases cost.
[0004] Therefore, the present application provides a welding frock for automobile parts to solve the problems raised in the above background. INVENTION CONTENTS
[0005] The utility model aims at providing a welding frock for automobile parts to solve the problems of the inner reinforcing plate and the outer reinforcing plate in the right suspension bracket assembly in the prior art, such as difficult fixation and positioning, inaccurate positioning, poor welding precision, complicated operation and increased cost during welding of the inner reinforcing plate and the outer reinforcing plate.
[0006] To solve the above technical problems, the utility model provides a welding frock for automobile parts, which comprises a workbench, a right suspension bracket is arranged on the workbench, first and second pressing assemblies are arranged on the two sides of the right suspension bracket respectively, the first and second pressing assemblies support and fix the right suspension bracket respectively, and a positioning block in the second pressing assembly magnetically fixes and positions the outer reinforcing plate;A pushing mechanism is arranged on the workbench at the horizontally opposite position of the right suspension bracket, and the pushing mechanism places the inner reinforcing plate inside the right suspension bracket for welding.
[0007] The further improvement of the utility model technical scheme lies in: the right suspension support includes first side wall and second side wall which are integrally formed on both sides of the bottom plate body, and the first side wall and the second side wall are respectively welded on the two side walls of the inner reinforcing plate.
[0008] The further improvement of the utility model technical scheme lies in: the first side wall top end is outwardly bent by 90 degrees to set the first end plate, the second side wall top end is outwardly bent by 90 degrees to set the second end plate, and the outer reinforcing plate is welded at the included angle between the second end plate and the second side wall.
[0009] The further improvement of the utility model technical scheme lies in: the first pressing assembly includes the first support, the rotating frame and the first cylinder which are sequentially arranged on the outer side of the right suspension support on the workbench, the first cylinder is arranged on the bottom surface of the workbench, the top of the first cylinder is provided with the fixed rod, the top end of the fixed rod is connected with the pressing arm through a shaft, the middle part of the pressing arm is connected with the rotating frame through a shaft, the bottom surface of the end part of the pressing arm is pressed against the top surface of the first end plate, and the bottom surface of the first end plate is abutted against the top surface of the first support.
[0010] The further improvement of the utility model technical scheme lies in: the second pressing assembly includes the second support, the fixed column A and the fixed column B which are sequentially arranged on the outer side of the right suspension support on the workbench, the top surface of the fixed column A is provided with the inclined support plate A, the top surface of the fixed column B is provided with the inclined support plate B, the second cylinder is arranged on the support plate B, the telescopic rod of the second cylinder penetrates through the support plate B and is provided with the support block at the end part, the support block is adapted to penetrate through the support plate A, the end part of the support block is provided with the positioning block, the positioning block presses the top surface of the second end plate, and the bottom surface of the second end plate is abutted against the top surface of the second support.
[0011] The further improvement of the utility model technical scheme lies in: the two side walls of the positioning block are respectively provided with the magnet holes, the magnet holes are sleeved with the magnets, the two side walls of the positioning block are respectively abutted against the vertical outer reinforcing plate, and the magnets are magnetically attracted to the outer reinforcing plate.
[0012] The further improvement of the utility model technical scheme lies in: the pushing mechanism includes the first fixing part, the second fixing part and the third fixing part which are sequentially arranged away from the right suspension support and are fixed on the workbench, the outer side of the third fixing part is provided with the pushing cylinder, the telescopic rod of the pushing cylinder penetrates through the third fixing part and is provided with the limiting plate at the end part, the limiting plate is integrally connected with the pushing block, and the pushing block penetrates through the second fixing part.
[0013] The further improvement of the utility model technical scheme lies in: the pushing cylinder is inclined, and the pushing cylinder, the pushing block and the limiting plate are linear.
[0014] The further improvement of the utility model technical scheme lies in: the upper surface of the pushing block is provided with the clamping block, the clamping block is adapted to clamp the side wall of the inner reinforcing plate, the upper surface of the pushing block is further provided with the positioning plate, and the positioning plate is adapted to be sleeved with the mounting hole in the inner reinforcing plate body.
[0015] The further improvement of the technical scheme of the utility model lies in that: a plurality of positioning air cylinders are further arranged on the bottom of the workbench, positioning pins are arranged on the end of the telescopic lever of the positioning air cylinders, the positioning pins penetrate through the workbench, the first support and the first end plate upwards, the first end plate is positioned, positioning pins are arranged on the end of the other positioning air cylinders, the positioning pins penetrate through the workbench, the second support and the second end plate upwards, the second end plate is positioned.
[0016] By adopting the above technical scheme, the utility model has the following beneficial effects:
[0017] 1. The welding tool for automobile parts is characterized in that: the first end plate and the second end plate on the two sides of the right suspension support body are positioned by the positioning air cylinder, the first pressing assembly and the second pressing assembly are used for pressing and fixing the first end plate and the second end plate on the two sides of the right suspension support body respectively, the movement of the right suspension support during welding is prevented, the accuracy during welding is ensured, and the welding precision is improved.
[0018] 2. The welding tool for automobile parts is characterized in that: the pushing mechanism is arranged on the welding tool, the pushing air cylinder in the pushing mechanism drives the pushing block to move forward, and then the inner reinforcing plate on the pushing block is placed into the right suspension support, so that the two side walls of the inner reinforcing plate are respectively abutted against the two inner walls of the right suspension support, the accuracy and convenience of the placement of the inner reinforcing plate are improved, and the operation is simple, the limiting plate is used for positioning the stroke of the pushing block, the clamping block on the pushing block and the positioning plate are used for fixing and positioning the inner reinforcing plate, the position of the inner reinforcing plate is accurately positioned, and the welding precision is improved.
[0019] 3. The welding tool for automobile parts is characterized in that: the second cylinder in the second pressing assembly is elongated, the second end plate of the right suspension support is pressed by the positioning block, the pressing and fixing of the second end plate are realized, when the outer reinforcing plate is welded, the right suspension support can be turned over, the second end plate of the right suspension support is pressed by the positioning block, the magnets sleeved on the two sides of the positioning block body are used for magnetically attracting, fixing and positioning the outer reinforcing plate, the positioning and fixing of the outer reinforcing plate are realized, the operation is simple, the positioning accuracy is improved, the welding precision is improved, in addition, the welding tool can be used for fixing and positioning the welding of the inner reinforcing plate and the outer reinforcing plate respectively, the welding tool is used for welding an assembly product in two times, and the cost is saved. BRIEF DESCRIPTION OF DRAWINGS
[0020] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.
[0021] Figure 1 It is a structure schematic view of a right suspension support and an inner reinforcing plate;
[0022] Figure 2 It is a structure schematic view of a right suspension support and an outer reinforcing plate;
[0023] Figure 3 It is a structure schematic view of a right suspension support and an inner reinforcing plate;
[0024] Figure 4 It is a structure schematic view of a first pressing assembly;
[0025] Figure 5 It is a structure schematic view of a second pressing assembly;
[0026] Figure 6 It is a structure schematic view of a right suspension support, a supporting block, a positioning block and an outer reinforcing plate;
[0027] Figure 7 It is a structure schematic view of a supporting block and a positioning block;
[0028] Figure 8 It is a structure schematic view of a pushing mechanism;
[0029] The drawings show that: 1, a first pressing assembly; 2, a second pressing assembly; 3, a pushing mechanism; 4, a right suspension support; 5, a workbench; 6, an inner reinforcing plate; 7, an outer reinforcing plate; 8, a positioning cylinder; 41, a first side wall; 42, a second side wall; 43, a bottom plate; 44, a first end plate; 45, a second end plate; 11, a first support; 12, a rotating frame; 13, a first cylinder; 131, a fixed rod; 132, a pressing arm; 21, a second support; 22, a fixed column A; 23, a fixed column B; 24, a positioning block; 25, a second cylinder; 26, a supporting block; 221, a supporting plate A; 231, a supporting plate B; 241, a magnet hole; 242, a magnet; 31, a first fixing piece; 32, a second fixing piece; 33, a third fixing piece; 34, a pushing cylinder; 35, a pushing block; 351, a clamping block; 352, a positioning plate; 353, a limiting plate; 121, a square column; 122, a U-shaped block. DETAILED DESCRIPTION
[0030] The technical solutions of the present application will be described clearly and completely in connection with the drawings. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.
[0031] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0032] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0033] The present application will be further explained and described in connection with specific embodiments.
[0034] As Figures 1-8As shown, the embodiment provides a welding tool for automobile parts, which comprises a workbench 5, a right suspension bracket 4 is arranged on the workbench 5, a first pressing assembly 1 and a second pressing assembly 2 are arranged on the two sides of the right suspension bracket 4 respectively, and the first pressing assembly 1 and the second pressing assembly 2 support and fix the right suspension bracket 4 respectively. The right suspension bracket 4 comprises a bottom plate 43, a first side wall 41 and a second side wall 42 are integrally formed on the two sides of the bottom plate 43, and the inner sides of the first side wall 41 and the second side wall 42 are welded with the two side walls of an inner reinforcing plate 6 respectively. The top end of the first side wall 41 is outwardly bent by 90 degrees to arrange a first end plate 44, the top end of the second side wall 42 is outwardly bent by 90 degrees to arrange a second end plate 45, and an outer reinforcing plate 7 is welded at the included angle between the second end plate 45 and the second side wall 42. A plurality of positioning cylinders 8 are further arranged on the bottom of the workbench 5, a positioning pin is arranged at the end of each positioning cylinder 8, the positioning pin penetrates the positioning holes of the workbench 5, a first bracket 11 and the first end plate 44 upwards to position the first end plate 44, and a positioning pin is arranged at the end of each other positioning cylinder 8, the positioning pin penetrates the positioning holes of the workbench 5, a second bracket 21 and the second end plate 45 upwards to position the second end plate 45. The right suspension bracket 4 is fixed on the first bracket 11 and the second bracket 21 through the positioning cylinders 8 arranged, so as to ensure the accuracy of the welding process, the right suspension bracket 4 is tightly fixed on the workbench 5 through the first pressing assembly 1 and the second pressing assembly 2 arranged, so as to prevent the right suspension bracket 4 from moving or loosening in the welding process, thereby ensuring the machining precision.
[0035] Further, the positioning block 24 in the second pressing assembly 2 magnetically fixes and positions the outer reinforcing plate 7, the second pressing assembly 2 can press and fix the right suspension bracket 4 when the inner reinforcing plate 6 is welded, can press and fix the right suspension bracket 4 when the outer reinforcing plate 7 is welded, and can magnetically fix and position the right suspension bracket 4 when the outer reinforcing plate 7 is welded. The inner reinforcing plate 6 and the outer reinforcing plate 7 can be pressed and fixed respectively in two times on the welding tool, and are welded into an assembly product. Compared with the need to use two sets of tools to respectively fix and weld the inner reinforcing plate 6 and the outer reinforcing plate 7, the cost is saved.
[0036] Further, a pushing mechanism 3 is arranged on the workbench 5 at a position horizontally opposite to the right suspension bracket 4, and the pushing mechanism 3 places the inner reinforcing plate 6 in the right suspension bracket 4 for welding. The arrangement of the pushing mechanism 3 can conveniently and quickly place the inner reinforcing plate 6 in the right suspension bracket 4 and realize positioning, the operation is simple, and the welding precision is improved.
[0037] As Figure 4As shown, in the embodiment, the first pressing assembly 1 comprises a first support 11, a rotating frame 12 and a first cylinder 13 arranged in sequence on the workbench 5 outside the right suspension support 4. The first cylinder 13 is arranged on the bottom surface of the workbench 5. The top of the first cylinder 13 is provided with a fixed rod 131. The top end of the fixed rod 131 is connected with a pressing arm 132 through a shaft. The middle part of the pressing arm 132 is connected with the rotating frame 12 through a shaft. The rotating frame 12 comprises a square column 121 fixed on the workbench 5. The top of the square column 121 is connected with a U-shaped block 122 through a shaft. The U-shaped block 122 is connected with the middle part of the pressing arm 132 through a shaft. The bottom surface of the end part of the pressing arm 132 is connected with the top surface of the first end plate 44. The bottom surface of the first end plate 44 is abutted against the top surface of the first support 11. The first cylinder 13 is elongated upwards, driving the fixed rod 131 to move upwards, and then driving the U-shaped block 122 to rotate on the square column 121, and driving the pressing arm 132 to rotate on the fixed rod 131, so that the pressing arm 132 is abutted against the top surface of the first end plate 44, and the first end plate 44 is pressed.
[0038] As shown in the drawings, Figures 5-7 The second pressing assembly 2 comprises a second support 21, a fixed column A 22 and a fixed column B 23 arranged in sequence on the workbench 5 outside the right suspension support 4. The top surface of the fixed column A 22 is provided with an inclined support plate A 221. The top surface of the fixed column B 23 is provided with an inclined support plate B 231. The second cylinder 25 is arranged on the support plate B 231. The telescopic rod of the second cylinder 25 penetrates through the support plate B 231 and is provided with a support block 26 at the end. The support block 26 penetrates through the support plate A 221. The end of the support block 26 is provided with a positioning block 24. The positioning block 24 presses the top surface of the second end plate 45. The bottom surface of the second end plate 45 is abutted against the top surface of the second support 21. The height of the fixed column A 22 is lower than the height of the fixed column B 23. When the telescopic rod of the second cylinder 25 is elongated downwards, the support block 26 slides in the support plate A 221, driving the positioning block 24 to move, so that the second end plate 45 is pressed and fixed.
[0039] Further, the two side walls of the positioning block 24 are respectively provided with a magnet hole 241. At least one magnet hole 241 is arranged. A magnet 242 is sleeved in the magnet hole 241. The two side walls of the positioning block 24 are respectively abutted against the vertical outer reinforcing plate 7. The magnet 242 is magnetically attracted and fixed to the outer reinforcing plate 7. The length of the positioning block 24 is set according to the welding position of the outer reinforcing plate 7. When the outer reinforcing plate 7 is magnetically attracted to the two side walls of the positioning block 24, the welding position of the outer reinforcing plate 7 is just right. The positioning block 24 can press and fix the second end plate 45 and can also position and fix the outer reinforcing plate 7, improving the welding precision.
[0040] As shown in the drawings, Figure 8As shown, in the embodiment, the pushing mechanism 3 comprises a first fixing member 31, a second fixing member 32 and a third fixing member 33 which are sequentially arranged away from the right suspension bracket 4 and fixed on the workbench 5. An outer side of the third fixing member 33 is provided with a pushing cylinder 34. An extension rod of the pushing cylinder 34 penetrates through the third fixing member 33 and is provided with a limiting plate 353 at an end portion. The limiting plate 353 is integrally formed and connected with a pushing block 35. The pushing block 35 penetrates through the second fixing member 32. The pushing cylinder 34 is obliquely arranged. The pushing cylinder 34, the pushing block 35 and the limiting plate 353 are linear. Since the right suspension bracket 4 is a special-shaped body, the first side wall 41 and the second side wall 42 are irregularly inclined and curved. The inner reinforcing plate 6 is placed in an inclined manner. The inclination angle of the reinforcing plate 6 is consistent with the inclination angle of the pushing cylinder 34. Therefore, when the inner reinforcing plate 6 is placed in the right suspension bracket 4, it is not easy to place and fix from the upper opening. Therefore, the oblique pushing cylinder 34 is arranged. The pushing cylinder 34, the pushing block 35 and the limiting plate 353 are linear. The pushing cylinder 34 can drive the limiting plate 353 and the pushing block 35 to move linearly. The side opening of the inner reinforcing plate 6 is pushed into the right suspension bracket 4. The operation is simple. The upper surface of the pushing block 35 is provided with a clamping block 351 which is adapted to clamp one side wall of the inner reinforcing plate 6. The upper surface of the pushing block 35 is further provided with a positioning plate 352 which is adapted to fit an installation hole in the body of the inner reinforcing plate 6. The limiting plate 353 positions the pushing block 35 in stroke. The clamping block 351 and the positioning plate 352 on the pushing block 35 fix and position the inner reinforcing plate 6. The position of the inner reinforcing plate 6 is accurately positioned. The welding precision is improved.
[0041] The utility model discloses still provide a kind of working principle for the welding tooling of automobile parts: user first operates external control system (not shown in drawing) and makes the telescopic rod of positioning cylinder 8 stretch out, right overhanging support 4 is placed with opening upward, the first end plate 44 and the second end plate 45 of right overhanging support 4 are respectively attached to first support 11 and second support 21, while, the positioning hole of first end plate 44 is equipped with the positioning pin of the end of positioning cylinder 8, realize the positioning of right overhanging support 4, first cylinder 13 is elongated upward, and the top surface of first end plate 44 is attached to pressing arm 132, and first end plate 44 is pressed tightly.Second cylinder 25 is elongated, and the top surface of second end plate 45 is pressed tightly by positioning block 24, and second end plate 45 is pressed tightly, and the positioning and fixing of right overhanging support 4 are completed;Inner reinforcing plate 6 is placed on push block 35, while clamping block 351 is adapted to the side wall of inner reinforcing plate 6, and positioning plate 352 is adapted to the mounting hole in the body of inner reinforcing plate 6, to realize the fixing and positioning of inner reinforcing plate, push cylinder 34 is elongated, and inner reinforcing plate 6 on push block 35 is placed in right overhanging support 4, while limiting plate 353 is positioned on push cylinder 34 and push block 35, then welding robot (not shown in drawing) is welded between right overhanging support 4 and inner reinforcing plate 6;After welding, first cylinder 13 and second cylinder 25 are loosened, right overhanging support 4 is turned over, placed on first support 11 and second support 21, and positioned by positioning cylinder 8, first cylinder 13 and second cylinder 25 are actuated and respectively make pressing arm 132 to first end plate 44 and positioning block 24 to second end plate 45 are pressed tightly, outer reinforcing plate 7 is magnetically attracted on both sides of positioning block 24, welding robot (not shown in drawing) is welded between right overhanging support 4 and outer reinforcing plate 7, after welding, all cylinders are loosened, and right overhanging support 4 is taken out.
[0042] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent substitution to part or all of the technical features; And these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.
Claims
1. A welding fixture for an automotive component, characterized by, The utility model provides a right suspension support (4) is provided on the workbench (5), and the first pressure assembly (1) and the second pressure assembly (2) are provided on both sides of right suspension support (4) respectively, and the first pressure assembly (1) and the second pressure assembly (2) support and fix right suspension support (4) respectively, and the positioning block (24) in the second pressure assembly (2) carries out the magnetic attraction fixed positioning to the outer reinforcing plate (7), and the pushing mechanism (3) is arranged on the workbench (5) and is located in the horizontal opposite position of right suspension support (4), and the inner reinforcing plate (6) is placed in right suspension support (4) inside for welding by pushing mechanism (3).
2. A welding fixture for automotive parts as claimed in claim 1 wherein, The right suspension support (4) includes a bottom plate (43) body, first and second side walls (41) and (42) integrally formed on both sides of the bottom plate (43) body, and the first and second side walls (41) and (42) are respectively welded to the two side walls of the inner reinforcing plate (6).
3. A welding fixture for automotive parts as claimed in claim 2 wherein, The first end plate (44) is arranged on the top of the first side wall (41) by bending outward by 90 degrees, the second end plate (45) is arranged on the top of the second side wall (42) by bending outward by 90 degrees, and the outer reinforcing plate (7) is welded at the angle between the second end plate (45) and the second side wall (42).
4. A welding fixture for automotive parts as claimed in claim 3 wherein, The first pressure assembly (1) includes a first support (11), a rotating frame (12), and a first cylinder (13) arranged in sequence on the workbench (5) outside the right suspension support (4), the first cylinder (13) is arranged on the bottom surface of the workbench (5), a fixed rod (131) is arranged on the top of the first cylinder (13), a pressure arm (132) is connected to the top of the fixed rod (131), the rotating frame (12) is connected to the middle of the pressure arm (132), the bottom surface of the end of the pressure arm (132) is pressed against the top surface of the first end plate (44), and the bottom surface of the first end plate (44) is in close contact with the top surface of the first support (11).
5. A welding fixture for automotive parts as claimed in claim 4 wherein, The second pressure assembly (2) includes a second support (21), a fixed column A (22), and a fixed column B (23) arranged in sequence on the workbench (5) outside the right suspension support (4), an inclined support plate A (221) is arranged on the top surface of the fixed column A (22), an inclined support plate B (231) is arranged on the top surface of the fixed column B (23), a second cylinder (25) is arranged on the support plate B (231), the telescopic rod of the second cylinder (25) penetrates through the support plate B (231) and is provided with a support block (26) at the end, the support block (26) is adapted to penetrate through the support plate A (221), the end of the support block (26) is provided with a positioning block (24), the positioning block (24) presses the top surface of the second end plate (45), and the bottom surface of the second end plate (45) is in close contact with the top surface of the second support (21).
6. A welding fixture for automotive parts as claimed in claim 4 wherein, Magnet holes (241) are arranged on the two side walls of the positioning block (24), magnets (242) are sleeved in the magnet holes (241), the two side walls of the positioning block (24) are in close contact with the vertical outer reinforcing plate (7), and the magnets (242) magnetically attract and fix the outer reinforcing plate (7).
7. The welding fixture for automotive parts as claimed in claim 1 wherein, The pushing mechanism (3) comprises a first fixing part (31), a second fixing part (32) and a third fixing part (33) which are sequentially arranged away from the right suspension support (4) and are fixed on the workbench (5), an outer side of the third fixing part (33) is provided with a pushing cylinder (34), an extension rod of the pushing cylinder (34) penetrates through the third fixing part (33) and is provided with a limiting plate (353) at an end portion, the limiting plate (353) is integrally connected with a pushing block (35), the pushing block (35) penetrates through the second fixing part (32).
8. The welding fixture for automotive parts as claimed in claim 1 wherein, The pushing cylinder (34) is obliquely arranged, and the pushing cylinder (34), the pushing block (35) and the limiting plate (353) are linear.
9. The welding fixture for automotive parts as claimed in claim 1 wherein, An upper surface of the pushing block (35) is provided with a clamping block (351) which is adapted to clamp a side wall of the inner reinforcing plate (6), and the upper surface of the pushing block (35) is further provided with a positioning plate (352) which is adapted to be fitted into a mounting hole in the body of the inner reinforcing plate (6).
10. The welding fixture for automotive parts as claimed in claim 1 wherein, The workbench (5) is further provided with a plurality of positioning cylinders (8) at a bottom portion, end portions of the positioning cylinders (8) are provided with positioning pins which penetrate upwardly through the workbench (5), the first support (11) and the first end plate (44) to position the first end plate (44), end portions of other positioning cylinders (8) are provided with positioning pins which penetrate upwardly through the workbench (5), the second support (21) and the second end plate (45) to position the second end plate (45).