A welding fixture for splicing automobile parts

Abstract

This invention relates to the field of welding fixture technology, and discloses a welding fixture for assembling automotive parts. The fixture includes a base with two symmetrically arranged movable plates on its top. A ring is mounted on each movable plate, and a clamping component is mounted on the ring. The clamping component includes a clamping assembly mounted on the ring, which is further equipped with a deformation component, an adjustment component, and a linkage pushing component. This welding fixture for assembling automotive parts achieves adaptive flexible clamping of automotive parts of different shapes, such as square and round, through a rotatable and adjustable first clamping plate combined with a hollow rubber plate structure. This overcomes the shortcomings of traditional fixtures, which can only adapt to a single shape of workpiece and require frequent replacement. The deformation component drives the first clamping plate to rotate, forming a V-shaped clamping structure. Combined with the linkage pushing component and the adjustment component, it automatically adapts to the workpiece shape, transforming line contact into surface contact, significantly increasing the force-bearing area and reducing local pressure.

Description

Technical Field

[0001] This invention relates to the field of welding fixture technology, and in particular to a welding fixture for assembling automotive parts. Background Technology

[0002] In the automotive manufacturing industry, component assembly and welding are crucial processes for ensuring the structural strength and assembly precision of the vehicle body. When welding automotive components, welding fixtures are needed to hold them in place and ensure stability during the welding process. However, traditional welding fixtures have the following drawbacks: In the processing and production of automotive parts and various mechanical components, welding fixtures are crucial process equipment for ensuring welding accuracy and improving production efficiency. Currently, most conventional welding fixtures on the market have fixed structures, with positioning and clamping components designed to be fixed, only suitable for clamping parts of a single specification or shape, resulting in low versatility and flexibility. When production tasks change, requiring the clamping and welding of workpieces with different dimensions and structural shapes, it is often necessary to replace the entire fixture or reassemble and adjust the positioning components. This process is not only cumbersome and time-consuming, but also significantly increases equipment changeover time and downtime, reducing overall production efficiency and increasing equipment investment and management costs for enterprises. Furthermore, during welding operations, the workpiece rapidly accumulates heat due to the high temperature of the electric arc, causing a rapid temperature rise. Most existing welding fixtures lack effective heat dissipation or insulation structures, allowing the workpiece to remain at a high temperature even after welding. Due to the lack of corresponding protective and cooling measures, the workpiece cannot cool down quickly after welding, and if operators handle the workpiece directly by hand, burns and other safety accidents are highly likely, posing a significant safety hazard. Meanwhile, the accumulation of high temperatures can also affect the precision of the fixture itself, exacerbate component deformation and wear, and further reduce clamping stability and welding quality. Therefore, traditional welding fixtures can no longer meet the demands of modern production for diverse, flexible, efficient, and safe applications. Summary of the Invention

[0003] Given that existing fixtures can only accommodate parts of one shape, significantly increasing equipment changeover time and downtime, reducing overall production efficiency, and lacking cooling mechanisms, which can easily cause parts to overheat, leading to burns and exacerbating component deformation and wear, a welding fixture for splicing automotive parts is proposed.

[0004] This application provides a welding fixture for splicing automotive parts. The purpose of the fixture is to adapt to parts of various shapes, improve overall production efficiency, and cool the parts during welding to avoid burns caused by temperature rise, thereby reducing component deformation and wear rate.

[0005] The technical solution of the present invention is as follows: a welding fixture for splicing automotive parts, including a fixture base, two movable plates symmetrically distributed on the top of the fixture base, a ring on the movable plate, and a clamping component disposed on the ring; The clamping component includes a clamping assembly disposed on a ring, and the clamping assembly is provided with a deformation assembly, an adjustment assembly, and a linkage pushing assembly; The clamping component is used to clamp and fix parts of different shapes and to absorb the heat generated during the welding of the parts; The clamping assembly includes a frame mounted on a ring, with two first electric actuators symmetrically distributed on the frame. The output ends of the first electric actuators penetrate the frame, and a central block is provided at the output ends of the first electric actuators. Two first clamping plates are symmetrically distributed on the central block, and hollow rubber plates are provided on the first clamping plates.

[0006] Furthermore, the deformable assembly includes a first cavity and a second cavity disposed at the output end of the first electric actuator. A first drive motor is disposed inside the first cavity, and a first threaded rod is disposed inside the second cavity. The output shaft of the first drive motor passes through the inner wall of the first cavity and is fixedly connected to the first threaded rod. A nut is disposed on the first threaded rod. Two through holes are symmetrically distributed on the second cavity. A U-shaped plate is disposed inside the through holes. The U-shaped plate is fixedly connected to the nut. A linkage rod is disposed between the U-shaped plate and the corresponding first clamping plate.

[0007] Furthermore, the adjustment assembly includes an adjustment plate disposed inside the hollow rubber plate, a groove provided on the first clamping plate, the adjustment plate being slidably connected to the inner side of the groove, a plurality of adjustment springs being symmetrically distributed between the adjustment plate and the inner wall of the groove, and a push rod being provided on the adjustment plate, the push rod passing through the first clamping plate.

[0008] Furthermore, the linkage pushing component includes a rhombus block disposed on the first clamping plate, a pushing rod being slidably connected to one of the inclined surfaces of the rhombus block, and two L-shaped rods being symmetrically distributed at the output end of the first electric push rod, with the L-shaped rods being slidably connected to the other inclined surface of the corresponding rhombus block.

[0009] Furthermore, the clamping component also includes a side clamping assembly and a heat dissipation assembly disposed on the clamping assembly; The side clamping assembly includes two symmetrically distributed sliding grooves on the frame. Two sliders are symmetrically distributed inside the sliding grooves. Two L-shaped connecting rods are symmetrically distributed between the sliders and the output end of the first electric actuator. A second electric actuator is mounted on the slider, and the output end of the second electric actuator passes through the slider. A fixing plate is mounted on the output end of the second electric actuator. Two side clamping rods are symmetrically distributed on the fixing plate. A side clamping plate is mounted on both side clamping rods. Two side clamping springs are symmetrically distributed between the side clamping plate and the fixing plate. The side clamping springs are sleeved on the corresponding side clamping rods. A first inclined surface is provided on the side clamping plate.

[0010] Furthermore, the heat dissipation assembly includes a first annular box disposed on a circular ring, a second annular box disposed on the first annular box, a first connecting hose disposed between the first annular box and the hollow rubber plate, a second connecting hose disposed between the second annular box and the hollow rubber plate, an inlet pipe disposed on the first annular box, and an outlet pipe disposed on the second annular box.

[0011] Furthermore, it also includes a drive assembly mounted on the movable plate. The drive assembly includes a second drive motor mounted on the movable plate. The output shaft of the second drive motor is provided with a drive wheel, and the drive wheel is connected to the ring via a belt drive.

[0012] Furthermore, it also includes a movable component mounted on the fixture base. The movable component includes a movable groove mounted on the fixture base. A bidirectional threaded rod is provided inside the movable groove. Two sliding plates are symmetrically distributed on the bidirectional threaded rod. The sliding plates are slidably connected to the inside of the movable groove. The sliding plates are fixedly connected to the corresponding movable plates. A rocker arm is also provided on the fixture base. The rocker arm is fixedly connected to the bidirectional threaded rod.

[0013] The beneficial effects of this invention are: By using a rotatable and adjustable first clamping plate in conjunction with a hollow rubber plate structure, adaptive flexible clamping of automotive parts of different shapes, such as square and round, is achieved, overcoming the drawbacks of traditional clamps that can only adapt to workpieces of a single shape and require frequent changes. The first clamping plate is driven to rotate by a deformable component to form a V-shaped clamping structure. This, combined with the linkage pushing and adjusting components, automatically adapts to the workpiece shape, transforming line contact into surface contact. This significantly increases the force-bearing area and reduces local pressure, preventing surface damage and deformation of the workpiece while improving clamping stability and positioning accuracy. Multiple workpiece shapes can be clamped without changing clamps, simplifying the operation process, shortening production changeover time, and reducing equipment investment and management costs. It is highly practical and suitable for the production mode of multi-variety, small-batch automotive parts.

[0014] By incorporating a hollow rubber plate and a circulating heat dissipation assembly, the system achieves rapid absorption and continuous dissipation of heat during welding, effectively addressing the safety hazards of excessively high workpiece temperatures and operator burns after welding. It also avoids issues such as decreased fixture accuracy and workpiece deformation caused by high-temperature accumulation. The hollow rubber plate can be filled with and circulate coolant, and the internal space can be adaptively adjusted with the regulating assembly. This ensures both a flexible fit during clamping and continuous heat removal through circulating coolant, maintaining the workpiece and fixture within a reasonable temperature range. Combined with a non-winding annular box structure, the coolant circulation pipeline is unaffected by the ring's rotation, ensuring stable and trouble-free heat dissipation. This balances production safety and welding quality stability, extending the overall service life of the fixture.

[0015] By integrating multi-angle adjustment, synchronous positioning, and flexible movement functions, this system comprehensively enhances the flexibility and precision of welding automotive parts, adapting to processing requirements of different sizes and welding angles. The base's bidirectional threaded rod drives the moving plate to slide synchronously, allowing for rapid adjustment of the clamping distance to accommodate workpieces of varying lengths. A circular ring, in conjunction with the drive assembly, enables 360-degree rotation, driving the workpiece to rotate omnidirectionally, eliminating welding dead angles and expanding the welding operation range. The side clamping assembly automatically centers the workpiece, preventing clamping misalignment and ensuring welding precision. The entire fixture is rigid and stable, with synchronized movements, integrating size adjustment, angle rotation, centering positioning, and flexible clamping, significantly improving welding efficiency and product consistency, meeting the high-precision, high-efficiency welding production requirements of automotive parts. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the clamping component structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the clamping component of the present invention; Figure 4 This is a partial structural diagram of the clamping component of the present invention; Figure 5 This is a schematic diagram of the clamping component structure of the present invention; Figure 6 This is a schematic diagram of the deformable component structure of the present invention; Figure 7 This is a schematic diagram of the adjustment component structure of the present invention; Figure 8 This is a schematic diagram of the linkage push component structure of the present invention; Figure 9 This is a schematic diagram of the side clamp assembly structure of the present invention; Figure 10 This is a schematic diagram of the heat dissipation component structure of the present invention; Figure 11This is a schematic diagram of the frame structure of the present invention; Figure 12 This is a schematic diagram of the mobile component structure of the present invention.

[0017] In the picture: 1. Fixture base; 11. Moving plate; 12. Ring; 2. Clamping assembly; 21. Frame; 22. First electric push rod; 23. Center block; 24. First clamping plate; 25. Hollow rubber plate; 3. Deformation assembly; 31. First drive motor; 32. First threaded rod; 33. Nut; 34. Linkage rod; 4. Adjustment assembly; 41. Adjustment plate; 42. Adjustment spring; 43. Push rod; 5. Linkage pushing assembly; 51. Rhomboid block; 52. L-shaped rod; 6. Side clamping assembly; 61. 62. Slider; 63. L-shaped connecting rod; 64. Second electric actuator; 65. Fixing plate; 66. Side clamping rod; 67. Side clamping plate; 78. Side clamping spring; 79. Heat dissipation assembly; 70. First annular box; 71. Second annular box; 72. First connecting hose; 73. Second connecting hose; 74. Inlet pipe; 75. Outlet pipe; 76. Drive assembly; 87. Second drive motor; 88. Drive wheel; 89. Belt; 90. Moving assembly; 91. Bidirectional threaded rod; 92. Slide plate; 93. Rocker arm. Detailed Implementation

[0018] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0019] Example 1, referring to Figures 1-8 This is the first embodiment of the present invention, which provides a welding fixture for splicing automotive parts, including a fixture base 1, two movable plates 11 symmetrically distributed and slidably connected to the top of the fixture base 1, a ring 12 rotatably connected to the movable plates 11, and a clamping component mounted on the ring 12; the clamping component includes a clamping assembly 2 mounted on the ring 12, and a deformation assembly 3, an adjustment assembly 4, and a linkage pushing assembly 5 are mounted on the clamping assembly 2; the clamping component is used to clamp and fix parts of different shapes and absorb the heat generated during the welding of the parts; the clamping assembly 2 includes a frame 21 fixedly connected to the ring 12, two first electric push rods 22 symmetrically distributed and fixedly connected to the frame 21, the output end of the first electric push rods 22 penetrating through the frame 21, a center block 23 fixedly connected to the output end of the first electric push rods 22, two first clamping plates 24 symmetrically distributed and rotatably connected to the center block 23, and a hollow rubber plate 25 fixedly connected to the first clamping plate 24.

[0020] Specifically, during operation, the fixture base 1 serves as the supporting foundation. Symmetrically arranged movable plates 11 and rings 12 cooperate with the clamping components to achieve flexible clamping and heat dissipation protection for parts of different shapes. The movable plates 11 can slide symmetrically on the fixture base 1, adjusting the spacing according to the part size to adapt to the initial positioning of workpieces of different specifications. The rings 12 are rotatably connected to the movable plates 11, driving the clamping components to rotate, meeting the multi-angle welding requirements of parts and expanding the welding operation range. The clamping assembly 2 is the core clamping structure, with the frame 21 fixed on the rings 12, providing installation support for internal components. Two first electric push rods 22 are synchronously driven, pushing the center block 23 to move. The center block 23 drives the two first clamping plates 24 to move, and the hollow rubber plate 25 contacts the workpiece surface. At this time, the clamped workpiece is square in shape. When a circular workpiece needs to be clamped, the two first clamping plates 24 are adjusted to rotate on the central block 23, forming a V-shaped structure between them. Under the combined action of the two clamping plates 24, the circular workpiece is stably clamped. At this time, the hollow rubber plate 25 deforms and adheres to the surface of the circular workpiece, changing the contact from line to surface. This increases the force-bearing area, reduces pressure, prevents surface damage and deformation, improves clamping stability and positioning accuracy, and facilitates heat conduction and dissipation. This enables heat absorption and multi-angle welding, solving problems such as poor adaptability, cumbersome operation, and scalding associated with traditional clamps, thus improving the precision, efficiency, and safety of automotive parts welding.

[0021] Reference Figure 6 and Figure 7 The deformable component 3 includes a first cavity and a second cavity opened at the output end of the first electric actuator 22. A first drive motor 31 is fixedly connected to the inside of the first cavity, and a first threaded rod 32 is rotatably connected to the inside of the second cavity. The output shaft of the first drive motor 31 passes through the inner wall of the first cavity and is fixedly connected to the first threaded rod 32. A nut 33 is threadedly connected to the first threaded rod 32. Two through holes are symmetrically distributed on the second cavity. A U-shaped plate is slidably connected to the inside of the through holes. The U-shaped plate is fixedly connected to the nut 33. A linkage rod 34 is rotatably connected between the U-shaped plate and the corresponding first clamping plate 24.

[0022] Specifically, when it is necessary to clamp a circular workpiece, the first drive motor 31 is started, which drives the first threaded rod 32 to rotate. Under the action of the U-shaped plate and the through hole, the nut 33 slides on the first threaded rod 32, the U-shaped plate slides inside the through hole, and the linkage rod 34 rotates, which drives the first clamping plate 24 to rotate on the center block 23, so that a V-shaped structure is formed between the two first clamping plates 24, which facilitates the clamping of the circular workpiece.

[0023] Reference Figure 7 and Figure 8The adjusting assembly 4 includes an adjusting plate 41 that is slidably and sealed to the inside of the hollow rubber plate 25. A groove is provided on the first clamping plate 24. The adjusting plate 41 is slidably and sealed to the inside of the groove. Several adjusting springs 42 are symmetrically distributed and fixedly connected between the adjusting plate 41 and the inner wall of the groove. A push rod 43 is also fixedly connected to the adjusting plate 41 and passes through the first clamping plate 24.

[0024] Specifically, when the two first clamping plates 24 are in a straight line, the push rod 43 is retracted inside the groove, the adjusting spring 42 is stretched, and the adjusting plate 41 is pushed upward, making the space between the hollow rubber plate 25 and the adjusting plate 41 smaller. The inside of the hollow rubber plate 25 is filled with coolant. Under the pressure of the adjusting plate 41, the coolant squeezes the inner wall of the hollow rubber plate 25, making the hollow rubber plate 25 less prone to deformation. At this time, the first clamping plate 24 can clamp square workpieces, and the hollow rubber plate 25 does not deform, avoiding continuous deformation of the hollow rubber plate 25, which would make the hollow rubber plate 25 easily damaged. When a V-shaped structure is formed between the two first clamping plates 24, under the action of the adjusting spring 42 and the inner pressure of the hollow rubber plate 25, the push rod 43 slides outward from the groove, causing the adjusting plate 41 to slide inward from the groove. This results in a larger space between the adjusting plate 41 and the hollow rubber plate 25. At this time, the pressure of the coolant on the inner wall of the hollow rubber plate 25 is reduced. The hollow rubber plate 25 is more prone to deformation. When clamping a round workpiece, the hollow rubber plate 25 deforms and fits tightly against the surface of the round workpiece, making the round workpiece clamped more firmly and less likely to be damaged.

[0025] Reference Figures 6-8 The linkage push component 5 includes a rhombus block 51 that is limited and slidably connected to the first clamping plate 24, a push rod 43 that is limited and slidably connected to one of the inclined surfaces of the rhombus block 51, and two L-shaped rods 52 that are symmetrically distributed and fixedly connected to the output end of the first electric push rod 22. The L-shaped rods 52 are slidably connected to the other inclined surface of the corresponding rhombus block 51.

[0026] Specifically, when the two first clamping plates 24 form a straight line, the L-shaped rod 52 presses against the rhombus block 51, causing the rhombus block 51 to move towards the push rod 43, which in turn moves the push rod 43 towards the inside of the groove. When the two first clamping plates 24 form a V-shaped structure, the L-shaped rod 52 separates from the rhombus block 51. At this time, under the action of the adjusting spring 42, the push rod 43 presses the rhombus block 51 away from the push rod 43.

[0027] Example 2, refer to Figures 9-11This is the second embodiment of the present invention, which differs from the first embodiment in that: the clamping component further includes a side clamping assembly 6 and a heat dissipation assembly 7 mounted on the clamping assembly 2; the side clamping assembly 6 includes two sliding grooves symmetrically distributed on the frame 21, two sliders 61 symmetrically distributed and slidably connected inside the sliding grooves, two L-shaped connecting rods 62 symmetrically distributed and fixedly connected between the sliders 61 and the output end of the first electric push rod 22, a second electric push rod 63 fixedly connected to the sliders 61, the output end of the second electric push rod 63 passing through the sliders 61, a fixing plate 64 fixedly connected to the output end of the second electric push rod 63, two side clamping rods 65 symmetrically distributed and slidably connected on the fixing plate 64, a side clamping plate 66 fixedly connected to the two side clamping rods 65, two side clamping springs 67 symmetrically distributed and fixedly connected between the side clamping plate 66 and the fixing plate 64, the side clamping springs 67 being sleeved on the corresponding side clamping rods 65, and a first inclined surface being provided on the side clamping plate 66.

[0028] Specifically, when the two first clamping plates 24 form a straight line, the second electric push rod 63 extends, causing the side clamping plate 66 to be located on the side of the hollow rubber plate 25 away from the first clamping plate 24. When a square workpiece is placed on the hollow rubber plate 25, the square workpiece slides on the first inclined surface until it contacts the hollow rubber plate 25, pressing the side clamping plate 66. This causes the side clamping rod 65 to slide on the fixed plate 64, pressing the side clamping spring 67. At this time, the square workpiece is exactly located in the middle of the two first clamping plates 24, avoiding the situation where the two square workpieces cannot be properly spliced ​​together when aligned due to the offset of the square workpiece during clamping. When the first electric push rod 22 pushes, the L-shaped connecting rod 62 drives the slider 61 to slide synchronously inside the groove, so that the side clamping plate 66 moves synchronously with the hollow rubber plate 25 on one side, without causing interference. When it is necessary to clamp a circular workpiece, the second electric actuator 63 is activated to retract, which drives the fixed plate 64 and the side clamping plate 66 to retract synchronously, so that the side clamping plate 66 moves away from the hollow rubber plate 25, thus preventing the side clamping plate 66 from blocking the first clamping plate 24 when the first clamping plate 24 is rotating.

[0029] Reference Figure 10 The heat dissipation assembly 7 includes a first annular box 71 rotatably connected to the ring 12, a second annular box 72 fixedly connected to the first annular box 71, a first connecting hose 73 fixedly connected between the first annular box 71 and the hollow rubber plate 25, a second connecting hose 74 fixedly connected between the second annular box 72 and the hollow rubber plate 25, an inlet pipe 75 fixedly connected to the first annular box 71, and an outlet pipe 76 fixedly connected to the second annular box 72.

[0030] Specifically, the external coolant outlet is connected to the inlet pipe 75, and the coolant inlet is connected to the outlet pipe 76, allowing external coolant to enter the first annular box 71 through the inlet pipe 75. One-way valves are installed on both the first connecting hose 73 and the second connecting hose 74, ensuring unidirectional flow of the coolant. The coolant enters the hollow rubber plate 25 through the first connecting hose 73, and then enters the second annular box 72 through the second connecting hose 74, exiting through the outlet pipe 76. This continuous flow of coolant within the hollow rubber plate 25 absorbs the heat generated during welding. Because the first annular box 71 is rotatably connected to the ring 12, the first annular box 71 and the second annular box 72 do not rotate when the ring 12 rotates, preventing the first connecting hose 73 and the second connecting hose 74 from becoming entangled. The remaining structure is the same as in Embodiment 1.

[0031] Example 3, referring to Figure 2 and Figure 10 This is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that it also includes a drive assembly 8 mounted on the movable plate 11. The drive assembly 8 includes a second drive motor 81 fixedly connected to the movable plate 11. The output shaft of the second drive motor 81 is fixedly connected to a drive wheel 82. The drive wheel 82 and the ring 12 are connected by a belt 83.

[0032] Specifically, the second drive motor 81 is started, which drives the drive wheel 82 to rotate. Through the belt 83, the ring 12 rotates, which in turn drives the clamped workpiece to rotate, and the workpiece is welded from all directions.

[0033] Reference Figure 12 It also includes a movable component 9 installed on the fixture base 1. The movable component 9 includes a movable groove opened on the fixture base 1. A bidirectional threaded rod 91 is rotatably connected to the inner side of the movable groove. Two slide plates 92 are symmetrically threaded on the bidirectional threaded rod 91. The slide plates 92 are slidably connected to the inner side of the movable groove. The slide plates 92 are fixedly connected to the corresponding movable plate 11. A rocker arm 93 is also rotatably connected to the fixture base 1. The rocker arm 93 is fixedly connected to the bidirectional threaded rod 91.

[0034] Specifically, rotating the rocker arm 93 causes the bidirectional threaded rod 91 to rotate. Under the action of the movable groove, the slide plate 92 slides inside the movable groove, causing the moving plate 11 to move, which facilitates the splicing and clamping of workpieces of different lengths. The rest of the structure is the same as that in Embodiment 2.

[0035] Based on embodiments 1-3, the working principle of the present invention is as follows: By inserting the workpiece to be welded into the frame 21, when the workpiece is square in shape, the two first clamping plates 24 are adjusted to be in a straight line, and the workpiece is placed on the hollow rubber plate 25. Through the first inclined surface, the workpiece will press the side clamping plate 66, so that the side clamping rod 65 slides on the fixed plate 64, and compresses the side clamping spring 67. Under the reaction of the side clamping spring 67, the side clamping plate 66 clamps the workpiece, ensuring that the two workpieces can be accurately aligned when spliced. The first electric push rod 22 is activated, which drives the first clamping plate 24 to move. Under the action of the two opposing first clamping plates 24, the workpiece is clamped. When the workpiece is circular, the first drive motor 31 is started, driving the first threaded rod 32 to rotate, causing the nut 33 to slide on the first threaded rod 32, driving the linkage rod 34 to rotate, causing the first clamping plate 24 to rotate on the center block 23, forming a V-shaped structure between the two first clamping plates 24. At this time, the L-shaped rod 52 separates from the rhombus block 51. Under the action of the adjusting spring 42, the push rod 43 slides on the inclined surface of the rhombus block 51, causing the adjusting plate 41 to move to the inner side of the groove, increasing the space between the adjusting plate 41 and the inner side of the hollow rubber plate 25. The space between the adjusting plate 41 and the hollow rubber plate 25 is filled with coolant. At this time, the pressure of the coolant on the inner wall of the hollow rubber plate 25 decreases, making the hollow rubber plate 25 more prone to deformation. When the circular workpiece is in contact with the outer wall of the hollow rubber plate 25, the hollow rubber plate 25 deforms, causing the hollow rubber plate 25 to adhere to the surface of the circular workpiece, making the clamping of the circular workpiece more stable and less likely to deform the circular workpiece. Coolant enters the first annular box 71 from the inlet pipe 75, enters the inner side of the hollow rubber plate 25 from the first connecting hose 73, then enters the second connecting hose 74 from the inner side of the hollow rubber plate 25, enters the inner side of the second annular box 72, and is discharged from the outlet pipe 76, thereby achieving the effect of cooling the surface of the welded workpiece.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A welding fixture for splicing automotive parts, comprising a fixture base (1), two movable plates (11) symmetrically distributed on the top of the fixture base (1), and a ring (12) disposed on the movable plate (11), characterized in that: It also includes a clamping component disposed on the ring (12); The clamping component includes a clamping assembly (2) disposed on a ring (12), and the clamping assembly (2) is provided with a deformation assembly (3), an adjustment assembly (4) and a linkage pushing assembly (5); The clamping component is used to clamp and fix parts of different shapes and to absorb the heat generated during the welding of the parts; The clamping assembly (2) includes a frame (21) set on a ring (12), two first electric actuators (22) are symmetrically distributed on the frame (21), the output end of the first electric actuator (22) passes through the frame (21), a central block (23) is set at the output end of the first electric actuator (22), two first clamping plates (24) are symmetrically distributed on the central block (23), and a hollow rubber plate (25) is set on the first clamping plate (24).

2. The welding fixture for assembling automotive parts according to claim 1, characterized in that: The deformable component (3) includes a first cavity and a second cavity disposed at the output end of the first electric push rod (22). A first drive motor (31) is disposed inside the first cavity, and a first threaded rod (32) is disposed inside the second cavity. The output shaft of the first drive motor (31) passes through the inner wall of the first cavity and is fixedly connected to the first threaded rod (32). A nut (33) is disposed on the first threaded rod (32). Two through holes are symmetrically distributed on the second cavity. A U-shaped plate is disposed inside the through holes. The U-shaped plate is fixedly connected to the nut (33). A linkage rod (34) is disposed between the U-shaped plate and the corresponding first clamping plate (24).

3. The welding fixture for assembling automotive parts according to claim 1, characterized in that: The adjustment assembly (4) includes an adjustment plate (41) disposed inside the hollow rubber plate (25), a groove is provided on the first clamping plate (24), the adjustment plate (41) is slidably connected to the inner side of the groove, a number of adjustment springs (42) are symmetrically distributed between the adjustment plate (41) and the inner wall of the groove, and a push rod (43) is also provided on the adjustment plate (41), the push rod (43) passes through the first clamping plate (24).

4. The welding fixture for assembling automotive parts according to claim 3, characterized in that: The linkage push assembly (5) includes a rhombus block (51) set on the first clamping plate (24), a push rod (43) and one of the inclined surfaces of the rhombus block (51) are slidably connected, and two L-shaped rods (52) are symmetrically distributed at the output end of the first electric push rod (22), and the L-shaped rods (52) are slidably connected to the other inclined surface of the corresponding rhombus block (51).

5. The welding fixture for assembling automotive parts according to claim 1, characterized in that: The clamping component also includes a side clamping component (6) and a heat dissipation component (7) disposed on the clamping assembly (2). The side clamp assembly (6) includes two sliding grooves symmetrically distributed on the frame (21). Two sliders (61) are symmetrically distributed inside the sliding grooves. Two L-shaped connecting rods (62) are symmetrically distributed between the sliders (61) and the output end of the first electric push rod (22). A second electric push rod (63) is provided on the slider (61). The output end of the second electric push rod (63) passes through the slider (61). A fixing plate (64) is provided at the output end of the second electric push rod (63). Two side clamping rods (65) are symmetrically distributed on the fixing plate (64). A side clamping plate (66) is provided on both side clamping rods (65). Two side clamping springs (67) are symmetrically distributed between the side clamping plate (66) and the fixing plate (64). The side clamping springs (67) are sleeved on the corresponding side clamping rods (65). A first inclined surface is provided on the side clamping plate (66).

6. The welding fixture for assembling automotive parts according to claim 5, characterized in that: The heat dissipation assembly (7) includes a first annular box (71) disposed on a ring (12), a second annular box (72) disposed on the first annular box (71), a first connecting hose (73) disposed between the first annular box (71) and the hollow rubber plate (25), a second connecting hose (74) disposed between the second annular box (72) and the hollow rubber plate (25), an inlet pipe (75) disposed on the first annular box (71), and an outlet pipe (76) disposed on the second annular box (72).

7. The welding fixture for assembling automotive parts according to claim 1, characterized in that: It also includes a drive assembly (8) disposed on the movable plate (11). The drive assembly (8) includes a second drive motor (81) disposed on the movable plate (11). The output shaft of the second drive motor (81) is provided with a drive wheel (82). The drive wheel (82) and the ring (12) are connected by a belt (83).

8. The welding fixture for assembling automotive parts according to claim 1, characterized in that: It also includes a movable component (9) set on the fixture base (1). The movable component (9) includes a movable groove set on the fixture base (1). A two-way threaded rod (91) is provided inside the movable groove. Two sliding plates (92) are symmetrically distributed on the two-way threaded rod (91). The sliding plates (92) are slidably connected to the inside of the movable groove. The sliding plates (92) are fixedly connected to the corresponding movable plate (11). A rocker arm (93) is also provided on the fixture base (1). The rocker arm (93) is fixedly connected to the two-way threaded rod (91).

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