Resistance welding device for vehicle body bottom panel assembly

Abstract

The present invention discloses a resistance welding device for a vehicle body floor assembly, which relates to the technical field of welding devices, and includes a workbench, a first welding piece and a second welding piece. The workbench surface is rotatably connected with a rotating platform, the first welding piece is placed on the rotating platform, and the second welding piece is placed on the first welding piece. A mounting frame is fixedly installed on one side of the workbench, and a welding assembly for welding the first welding piece and the second welding piece is arranged on the mounting frame. In the resistance welding device for the vehicle body floor assembly, the start of the driving motor drives the rotation of the first gear and the outer gear ring, and then the rotating platform rotates synchronously. This design enables the electrode member to more conveniently perform all-round welding on the welding piece on the rotating platform, thereby improving the flexibility and uniformity of welding; by controlling the movement of the sliding rod, in cooperation with the moving seat, the rotating plate and the cleaning plate, the outer wall of the electrode member is automatically cleaned, thereby improving the efficiency and effect of cleaning.

Description

Technical Field

[0001] The invention relates to the technical field of welding devices, in particular to a resistance welding device for a vehicle body floor assembly. Background Art

[0002] With the rapid development of the automobile manufacturing industry, the resistance welding technology of the body floor assembly has become one of the key processes for connecting body structural parts. As an important part of the automobile body, the welding quality and efficiency of the body floor assembly directly affect the safety, stability and production efficiency of the whole vehicle. At present, there is a body floor assembly resistance welding device on the market, which mainly drives the electrode parts to contact the welding parts through a mechanical transmission system and completes the welding process;

[0003] In the prior art, the resistance welding device of the vehicle body floor assembly usually adopts a fixed electrode configuration, and realizes the movement and positioning of the electrode through a simple mechanical structure. However, this design has obvious defects:

[0004] First, the movement of the electrodes often lacks synchronization, which results in the body floor components and resistors not being contacted and welded at the same time, thus affecting the efficiency and accuracy of welding.

[0005] In addition, the resistance welding device for the body floor assembly in the prior art also has obvious shortcomings in the cleaning of electrode parts. Since the electrode parts are easily contaminated with impurities and oxides during use, these impurities will seriously affect the welding quality and the service life of the electrode parts. However, the existing devices usually rely on manual cleaning of the electrode parts, which is not only inefficient, but also difficult to ensure the cleaning effect, while increasing labor costs and labor intensity. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a resistance welding device for a vehicle body floor assembly, which solves the technical problems mentioned in the background technology.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a resistance welding device for a vehicle body floor assembly, comprising a workbench, a first welding piece and a second welding piece, a rotating platform rotatably connected to the surface of the workbench, the first welding piece is placed on the rotating platform, the second welding piece is placed on the first welding piece, a mounting frame is fixedly installed on one side of the workbench, and a welding assembly for welding the first welding piece and the second welding piece is arranged on the mounting frame;

[0008] An outer gear ring is fixedly connected to the bottom of the rotating platform, a first gear is meshedly connected to one side of the outer gear ring, and a driving motor fixedly installed on the mounting frame is arranged at the bottom of the first gear;

[0009] The welding assembly includes a support plate fixedly installed on a mounting frame, a horizontal plate is arranged at the upper and lower positions of the support plate, electrode pieces are arranged on one side of the two horizontal plates close to the rotating platform, a support fixedly installed on the workbench is arranged between the two horizontal plates, a sleeve rod is rotatably connected to the support, a spline rod is slidably connected to the upper and lower ends of the sleeve rod in a vertical direction, a first pulley is fixedly connected to the other end of the spline rod, a second pulley is fixedly connected to the outer wall of the electrode piece, and the second pulley is connected to the first pulley through a belt for transmission, and an inner gear ring is arranged on the inner surface of the second pulley.

[0010] As a further preferred embodiment of the present technical solution, a second gear is fixedly connected to the outer wall of the sleeve rod, and the second gear is meshingly connected to the outer gear ring.

[0011] As a further preferred embodiment of the present technical solution, a servo motor is fixedly mounted on one side of the support plate, a third gear is fixedly connected to the output end of the servo motor, a first gear rod is meshingly connected to both sides of the third gear, and an outer end of the first gear rod is fixedly connected to the cross plate.

[0012] As a further preferred embodiment of the present technical solution, a fixing frame is fixedly connected to the inner end of the horizontal plate, a rotating plate is rotatably connected to one side of the fixing frame, and a cleaning plate for cleaning the outer wall of the electrode member is rotatably connected to the side of the rotating plate close to the rotating platform.

[0013] As a further preferred embodiment of the present technical solution, the outer wall of the rotating plate is slidably connected to a moving seat, a sliding rod is movably connected to one side of the moving seat, the sliding rod is installed on the fixed frame for transverse sliding, and a tension spring sleeved on the sliding rod is arranged between the fixed frame and the moving seat, and a trapezoidal block is fixedly connected to the other end of the sliding rod.

[0014] As a further preferred embodiment of the present technical solution, a fixing frame is fixedly connected to the upper and lower inner ends of the support plate, an inclined plate is fixedly connected to the inner end of the fixed frame, and the inclined plate is slidably connected to the opposite surface of the trapezoidal block.

[0015] As a further preferred embodiment of the present technical solution, a transmission rod is rotatably connected to the fixed frame near the electrode member, a fourth gear meshing with the inner gear ring is fixedly connected to the outer end of the transmission rod, and a rotating frame is fixedly connected to the inner end of the transmission rod, on which a plurality of knocking wheels are arranged.

[0016] As a further optimization of the present technical solution, support seats are fixedly connected on both sides of the workbench surface, a movable rod is rotatably connected to the support seat, a V-shaped rod is fixedly connected to one side of the movable rod, a flip clamp is rotatably connected to the movable rod, and a torsion spring is arranged between the flip clamp and the support seat, and a pressure plate is fixedly connected to the inner end of the flip clamp.

[0017] As a further preferred embodiment of the present technical solution, the support plate is slidably connected to a second gear rod meshing with the third gear on both sides, and a push rod is fixedly connected to the outer end of the second gear rod, and the push rod is located on the V-shaped rod.

[0018] Compared with the prior art, it has the following beneficial effects:

[0019] The servo motor drives the third gear and the first gear rod to achieve the synchronous inward or outward movement of the two electrode parts. This synchronous action ensures that the first welding part and the second welding part can be contacted and welded at the same time, which improves the efficiency and accuracy of welding. The start of the drive motor drives the rotation of the first gear and the outer gear ring, and then the rotating platform rotates synchronously. This design enables the electrode parts to more conveniently perform all-round welding on the welding parts on the rotating platform, thereby improving the flexibility and uniformity of welding. By controlling the movement of the slide bar, in conjunction with the moving seat, the rotating plate and the cleaning plate, the automatic cleaning of the outer wall of the electrode part is achieved. This design not only reduces The need for manual cleaning is reduced, the efficiency and effect of cleaning are improved, and the labor cost and labor intensity are reduced; the linkage mechanism of the second pulley, the inner ring, the fourth gear, the transmission rod, the rotating frame and the knocking wheel is utilized to realize the knocking and vibration treatment of the electrode component and its cleaning plate. This vibration can effectively shake off the impurities on the outer wall of the electrode component, especially the impurities in the tiny gaps that are difficult to remove by conventional methods, thereby enhancing the comprehensiveness and thoroughness of the cleaning; by timely cleaning the impurities on the outer wall of the electrode component, the impurities can be prevented from causing further corrosion or wear to the electrode component, thereby extending the service life of the electrode component and reducing the frequency and cost of replacing the electrode component.

[0020] Through the coordinated work of the servo motor, the third gear and the second gear rod, the push rod can accurately control the movement of the V-rod, the movable rod, the flip clamp and the pressure plate to achieve rapid and stable downward pressing and fixing of the first weldment and the second weldment. This mechanized fixing method not only improves work efficiency, but also ensures stability and safety during the welding process; utilizing the elastic characteristics of the torsion spring, when the push rod moves inward, the torsion spring is tightened, so that the pressure plate applies sufficient pressure to the weldment to achieve fixation; and when the weldment needs to be released, it is only necessary to move the push rod outward, and the rebound force of the torsion spring will drive the flip clamp and the pressure plate to rotate outward, thereby The design makes it easy to release the welded parts, making the fixing and releasing process more flexible and convenient; the design of the flip clamp and the pressure plate makes the device suitable for welded parts of different shapes and sizes. By adjusting the opening size of the flip clamp and the pressure of the pressure plate, various welded parts can be stably fixed, improving the versatility and practicality of the device; the uniform pressure of the pressure plate on the welded parts avoids deformation or damage of the welded parts caused by improper fixation, thereby ensuring the welding quality. At the same time, the material and design of the flip clamp and the pressure plate also take into account the protection of the welded parts, avoiding scratches or damage to the welded parts during the fixing and releasing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the workbench, the rotating platform, the outer gear ring, and the first gear in the present invention;

[0023] Figure 3 It is a structural schematic diagram of the welding assembly in the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the servo motor, the third gear, the first gear rod, the cross plate, the sleeve rod, the spline rod, and the second gear in the present invention;

[0025] Figure 5 It is a structural schematic diagram of the fixing frame, the cleaning plate, the knocking wheel, the trapezoidal block and the inclined plate in the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the electrode member, the second pulley and the inner gear ring in the present invention;

[0027] Figure 7 It is a schematic structural diagram of the third gear, the first gear rod and the second gear rod in the present invention;

[0028] Figure 8 It is a schematic structural diagram of the V-shaped rod, the second gear rod, the push rod, the movable rod and the pressure plate in the present invention.

[0029] In the figure: 1, workbench; 2, rotating platform; 3, first welding part; 4, second welding part; 5, mounting frame; 6, welding assembly; 21, outer gear ring; 22, first gear; 23, driving motor; 61, support plate; 62, cross plate; 63, electrode member; 64, support; 65, sleeve rod; 66, spline rod; 67, first pulley; 68, second pulley; 69, belt; 610, second gear; 611, servo motor; 612, third gear; 613, first gear rod; 614 , fixed frame; 615, tilting plate; 616, fixed frame; 617, rotating plate; 618, cleaning plate; 619, sliding rod; 620, moving seat; 621, trapezoidal block; 622, tension spring; 623, transmission rod; 624, fourth gear; 625, rotating frame; 626, knocking wheel; 627, inner ring gear; 628, second gear rod; 629, pushing rod; 630, supporting seat; 631, movable rod; 632, flip clamp; 633, pressure plate; 634, torsion spring; 635, V-shaped rod. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings of the specification. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] Embodiment 1: Combination Figure 1-Figure 8 As shown, the present invention provides a technical solution: a resistance welding device for a vehicle body floor assembly, the device mainly comprises a workbench 1, a first welding piece 3 and a second welding piece 4, wherein the first welding piece 3 is a vehicle body floor assembly, and the second welding piece 4 is a resistor to be welded, the surface of the workbench 1 is rotatably connected with a rotating platform 2, the first welding piece 3 is placed on the rotating platform 2, and the second welding piece 4 is placed on the first welding piece 3, a mounting frame 5 is fixedly installed on one side of the workbench 1, and a welding assembly 6 for welding the first welding piece 3 and the second welding piece 4 is arranged on the mounting frame 5;

[0032] The bottom of the rotating platform 2 is fixedly connected with an outer gear ring 21, one side of the outer gear ring 21 is meshed with the first gear 22, and the bottom of the first gear 22 is provided with a driving motor 23 fixedly mounted on the mounting frame 5. By turning on the driving motor 23, the first gear 22 can be driven to rotate synchronously, and then the outer gear ring 21 meshed with it is driven to rotate through the first gear 22, thereby driving the rotating platform 2 to rotate synchronously. Such a design enables the two electrode members 63 to more conveniently perform welding processing on the first welding member 3 and the second welding member 4 on the rotating platform 2;

[0033] The welding assembly 6 includes a support plate 61 fixedly mounted on the mounting frame 5, a horizontal plate 62 is arranged at the upper and lower positions of the support plate 61, and an electrode member 63 is arranged on one side of the two horizontal plates 62 close to the rotating platform 2, and the two electrode members 63 serve as a positive electrode and a negative electrode respectively. During the welding process, the positive electrode is the electrode from which the current flows out, and it is usually connected to the positive output terminal of the welding power supply; and the negative electrode is the electrode from which the current flows in, and it is connected to the negative output terminal of the welding power supply. A support 64 fixedly mounted on the workbench 1 is arranged between the two horizontal plates 62, and a sleeve rod 65 is rotatably connected to the support 64, and the upper and lower ends of the sleeve rod 65 are slidably connected to a spline rod 66 in the vertical direction, and the other end of the spline rod 66 is fixedly connected to The first pulley 67 and the outer wall of the electrode member 63 are fixedly connected with the second pulley 68, and the second pulley 68 is connected to the first pulley 67 by a belt 69. The inner surface of the second pulley 68 is provided with an inner gear ring 627. When the first welding member 3 and the second welding member 4 need to be welded, the two electrode members 63 are controlled to move inward, so that the cross plate 62 drives the spline rod 66 to slide on the sleeve rod 65, thereby driving the two electrode members 63 to move synchronously. In this way, one of the electrode members 63 contacts the first welding member 3, and the other electrode member 63 contacts the second welding member 4, and the first welding member 3 and the second welding member 4 are welded by the two electrode members 63;

[0034] On the outer wall of the sleeve rod 65, a second gear 610 is fixedly connected, and the gear is tightly meshed with the outer gear ring 21. When the driving motor 23 is started and drives the outer gear ring 21 to rotate synchronously, the outer gear ring 21 will synchronously drive the second gear 610 to rotate, thereby causing the sleeve rod 65 to rotate synchronously. With the rotation of the sleeve rod 65, the spline rod 66 will also rotate synchronously. The spline rod 66 is connected to the belt 69 through the first pulley 67, and the belt 69 then transmits power to the second pulley 68 and the electrode member 63 to achieve their synchronous rotation.

[0035] A servo motor 611 is fixedly installed on one side of the support plate 61. The output end of the servo motor 611 is fixedly connected to the third gear 612. The servo motor 611 can control the third gear 612 to rotate forward or reverse. Both sides of the third gear 612 are meshed and connected with the first gear rod 613. The outer end of the first gear rod 613 is fixedly connected to the cross plate 62. By starting the servo motor 611, the third gear 612 can be driven to rotate synchronously, thereby making the first gear rods 613 on both sides move synchronously. This synchronous movement will drive the two cross plates 62 to move synchronously inward or outward, thereby realizing the synchronous inward or outward movement of the two electrode members 63. When the two electrode members 63 move synchronously inward, they will weld the first welding member 3 and the second welding member 4.

[0036] The inner end of the horizontal plate 62 is fixedly connected to a fixed frame 616, one side of the fixed frame 616 is rotatably connected to a rotating plate 617, and the side of the rotating plate 617 close to the rotating platform 2 is rotatably connected to a cleaning plate 618, and the cleaning plate 618 is used to clean the outer wall of the electrode member 63, and the outer wall of the rotating plate 617 is slidably connected to a moving seat 620, and one side of the moving seat 620 is movably connected to a sliding rod 619, and the sliding rod 619 is slidably installed on the fixed frame 616, and the fixed frame 616 and the moving seat 620 are connected to each other. 0 is provided with a tension spring 622 sleeved on the slide bar 619, and the other end of the slide bar 619 is fixedly connected with a trapezoidal block 621. When the outer wall of the electrode member 63 needs to be cleaned, the slide bar 619 is controlled to move toward the side of the rotating platform 2, so that the slide bar 619 cooperates with the moving seat 620 to push the rotating plate 617 and the cleaning plate 618 to rotate toward the electrode member 63, and the tension spring 622 is stretched, so that the cleaning plate 618 fits the outer wall of the electrode member 63, thereby scraping the outer wall of the rotating electrode member 63;

[0037] The upper and lower ends of the inner side of the support plate 61 are fixedly connected with a fixed frame 614, and the inner end of the fixed frame 614 is fixedly connected with an inclined plate 615. The inclined plate 615 is slidably connected with the opposite surface of the trapezoidal block 621. When the horizontal plate 62 moves outward, the trapezoidal block 621 located on the inclined plate 615 moves toward the side of the rotating platform 2, so that the trapezoidal block 621 drives the sliding rod 619, the moving seat 620, the rotating plate 617, and the cleaning plate 618 to move toward the side of the electrode member 63, so that the cleaning plate 618 fits with the outer wall of the electrode member 63, and under the elastic force of the tension spring 622, the trapezoidal block 621 can fit and slide with the inclined plate 615;

[0038] The fixed frame 616 is rotatably connected to a transmission rod 623 on one side close to the electrode member 63. The outer end of the transmission rod 623 is fixedly connected to a fourth gear 624 meshing with the inner gear ring 627. The inner end of the transmission rod 623 is fixedly connected to a rotating frame 625. A plurality of knocking wheels 626 are arranged on the rotating frame 625. When the second pulley 68 rotates, the inner gear ring 627 is driven to rotate synchronously. The inner gear ring 627 drives the meshed fourth gear 624 to rotate, so that the fourth gear 624 drives the transmission rod 623 to rotate synchronously. The transmission rod 623 drives the rotating frame 625 and the knocking wheel 626 to rotate synchronously, so that the rotating knocking wheel 626 can impact the rotating plate 617, the cleaning plate 618 and the electrode member 63. The knocking and vibration treatment can more effectively shake off impurities such as oxides and residues on the outer wall of the electrode member 63, thereby improving the efficiency and effect of cleaning. The vibration effect of the knocking wheel 626 can penetrate into the tiny gaps of the electrode member 63, and remove impurities that are difficult to remove by conventional methods, thereby enhancing the comprehensiveness and thoroughness of cleaning. By timely cleaning the impurities on the outer wall of the electrode member 63, the impurities can be prevented from causing further corrosion or wear to the electrode member 63, thereby extending the service life of the electrode member 63. This automated knocking and vibration cleaning method reduces the need for manual cleaning, reduces labor costs and labor intensity, and also improves the degree of automation of the production line.

[0039] In the embodiment of the present invention, by starting the servo motor 611, the third gear 612 can be driven to rotate synchronously. The rotation of the third gear 612 will further drive the first gear rods 613 on both sides to move synchronously, so that the two cross plates 62 can move synchronously inward or outward. This synchronous movement action will drive the two electrode members 63 to move synchronously inward or outward. When the two electrode members 63 move synchronously inward, one of the electrode members 63 will contact the first welding member 3, and the other electrode member 63 will contact the second welding member 4.

[0040] By starting the driving motor 23, the first gear 22 can be driven to rotate synchronously, and the rotation of the first gear 22 will further drive the outer gear ring 21 engaged on one side to rotate, thereby causing the rotating platform 2 to rotate synchronously. Such a rotation action facilitates the two electrode members 63 to perform welding processing on the first welding member 3 and the second welding member 4 on the rotating platform 2;

[0041] When it is necessary to clean the outer wall of the electrode member 63, the slide bar 619 can be controlled to move toward one side of the rotating platform 2. The movement of the slide bar 619 will cooperate with the moving seat 620 to push the rotating plate 617 and the cleaning plate 618 to rotate toward the electrode member 63, and stretch the tension spring 622, so that the cleaning plate 618 fits the outer wall of the electrode member 63. In this way, the cleaning plate 618 can scrape the outer wall of the rotating electrode member 63. At the same time, the second pulley 68 will drive the inner gear ring 627 to rotate synchronously when rotating, and the inner gear ring 627 will drive the meshing fourth gear 624 to rotate, so that the fourth gear 624 drives the transmission rod 623 to rotate synchronously, and the rotation of the transmission rod 623 will drive the rotating frame 625 and the knocking wheel 626 to rotate synchronously, so that the rotating knocking wheel 6 26 pairs of rotating plates 617, cleaning plates 618 and electrode members 63 are subjected to knocking and vibration treatment. The knocking and vibration can more effectively shake off impurities such as oxides and residues on the outer wall of the electrode member 63, thereby improving the efficiency and effect of cleaning. The vibration effect of the knocking wheel 626 can penetrate into the tiny gaps of the electrode member 63, and remove impurities that are difficult to remove by conventional methods, thereby enhancing the comprehensiveness and thoroughness of cleaning. By timely cleaning the impurities on the outer wall of the electrode member 63, the impurities can be prevented from causing further corrosion or wear to the electrode member 63, thereby extending the service life of the electrode member 63. This automated knocking and vibration cleaning method reduces the need for manual cleaning, reduces labor costs and labor intensity, and also improves the degree of automation of the production line.

[0042] Embodiment 2: Combination Figure 7 , Figure 8As shown, on the basis of the first embodiment, on both sides of the surface of the workbench 1, it can be seen that support seats 630 are fixedly connected, and on these support seats 630, movable rods 631 are designed to be rotatably connected, and on one side of the movable rod 631, the V-shaped rod 635 is fixedly connected, and the other end of the movable rod 631 is rotatably connected to the flip clamp 632. In order to ensure the stability of the flip clamp 632 in a specific position, a torsion spring 634 is specially arranged between the support seat 630 and the flip clamp 632. In addition, the inner end of the flip clamp 632 is also fixedly connected to a pressure plate 633. On the upper and lower sides of the support plate 61, it can be seen that a second gear rod 628 meshing with the third gear 612 is slidably connected, and the outer end of the second gear rod 628 is fixedly connected to a push rod 629, and this push rod 629 is just located on the V-shaped rod 635. When the servo motor 611 is started and drives the third gear 612 to rotate synchronously, the third gear 612 will drive the second gear rod 628 to move horizontally When the first welding piece 3 and the second welding piece 4 need to be fixed on the rotating platform 2, the push rod 629 will move inward through the coordinated work of the servo motor 611, the third gear 612, and the second gear rod 628. The inward movement of the push rod 629 will drive the V-shaped rod 635 to rotate inward, thereby causing the movable rod 631, the flip clamp 632, and the lower pressure plate 633 to move inward with the rotation. In this process, the torsion spring 634 will be placed in a tightened state, so that The pressure plate 633 can apply pressure to the first welding part 3 and the second welding part 4 to achieve downward pressing and fixing. When the welded first welding part 3 and the second welding part 4 need to be removed, it is only necessary to move the second gear rod 628 and the push rod 629 outward. In this way, the V-shaped rod 635 will drive the movable rod 631, the flip clamp 632, and the lower pressure plate 633 to rotate outward, and the torsion spring 634 will rebound, so that the pressure plate 633 no longer applies pressure to the first welding part 3 and the second welding part 4, making it easy to remove.

[0043] In an embodiment of the present invention, the servo motor 611, the third gear 612, and the second gear rod 628 are used to drive the push rod 629 to move inward, so that the push rod 629 drives the V-shaped rod 635 to rotate inward, thereby making the V-shaped rod 635 drive the movable rod 631, the flip clamp 632, and the lower pressure plate 633 to rotate inward. At this time, the torsion spring 634 is in a twisted state, so that the pressure plate 633 presses down and fixes the first welding part 3 and the second welding part 4.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A resistance welding device for a vehicle body floor assembly, comprising a workbench (1), a first welding piece (3) and a second welding piece (4), characterized in that: The surface of the workbench (1) is rotatably connected to a rotating platform (2), a first welding part (3) is placed on the rotating platform (2), and a second welding part (4) is placed on the first welding part (3); a mounting frame (5) is fixedly mounted on one side of the workbench (1), and a welding assembly (6) for performing welding processing on the first welding part (3) and the second welding part (4) is arranged on the mounting frame (5); An outer gear ring (21) is fixedly connected to the bottom of the rotating platform (2), a first gear (22) is meshedly connected to one side of the outer gear ring (21), and a driving motor (23) fixedly mounted on the mounting frame (5) is provided at the bottom of the first gear (22); The welding assembly (6) comprises a support plate (61) fixedly mounted on a mounting frame (5), a horizontal plate (62) being arranged at upper and lower positions of the support plate (61), an electrode member (63) being arranged on one side of the two horizontal plates (62) close to the rotating platform (2), a support (64) fixedly mounted on the workbench (1) being arranged between the two horizontal plates (62), a sleeve rod (65) being rotatably connected to the support (64), a spline rod (66) being slidably connected to the upper and lower ends of the sleeve rod (65) in a vertical direction, a first belt pulley (67) being fixedly connected to the other end of the spline rod (66), a second belt pulley (68) being fixedly connected to the outer wall of the electrode member (63), the second belt pulley (68) being connected to the first belt pulley (67) by a belt (69) for transmission, and an inner gear ring (627) being arranged on the inner surface of the second belt pulley (68); The inner end of the transverse plate (62) is fixedly connected to a fixing frame (616), one side of the fixing frame (616) is rotatably connected to a rotating plate (617), and the side of the rotating plate (617) close to the rotating platform (2) is rotatably connected to a cleaning plate (618) for cleaning the outer wall of the electrode member (63); the side of the fixing frame (616) close to the electrode member (63) is rotatably connected to a transmission rod (623), the outer end of the transmission rod (623) is fixedly connected to a fourth gear (624) meshing with an inner gear ring (627), and the inner end of the transmission rod (623) is fixedly connected to a rotating frame (625), and a plurality of knocking wheels (626) are arranged on the rotating frame (625).

2. A resistance welding device for a vehicle body floor assembly according to claim 1, characterized in that: A second gear (610) is fixedly connected to the outer wall of the sleeve rod (65), and the second gear (610) is meshingly connected to the outer gear ring (21).

3. The resistance welding device for a vehicle body floor assembly according to claim 1, characterized in that: A servo motor (611) is fixedly mounted on one side of the support plate (61); a third gear (612) is fixedly connected to the output end of the servo motor (611); first gear rods (613) are meshedly connected to both sides of the third gear (612); and an outer end of the first gear rod (613) is fixedly connected to the horizontal plate (62).

4. The resistance welding device for a vehicle body floor assembly according to claim 1, characterized in that: The outer wall of the rotating plate (617) is slidably connected to a moving seat (620), one side of the moving seat (620) is movably connected to a sliding rod (619), the sliding rod (619) is transversely slidably installed on the fixed frame (616), and a tension spring (622) sleeved on the sliding rod (619) is provided between the fixed frame (616) and the moving seat (620), and the other end of the sliding rod (619) is fixedly connected to a trapezoidal block (621).

5. The resistance welding device for a vehicle body floor assembly according to claim 4, characterized in that: The upper and lower ends of the inner side of the support plate (61) are fixedly connected to a fixing frame (614), the inner end of the fixing frame (614) is fixedly connected to an inclined plate (615), and the inclined plate (615) is slidably connected to the opposite surface of the trapezoidal block (621).

6. The resistance welding device for a vehicle body floor assembly according to claim 3, characterized in that: Support seats (630) are fixedly connected to both sides of the surface of the workbench (1); a movable rod (631) is rotatably connected to the support seat (630); a V-shaped rod (635) is fixedly connected to one side of the movable rod (631); a flip clamp (632) is rotatably connected to the movable rod (631); a torsion spring (634) is provided between the flip clamp (632) and the support seat (630); a pressure plate (633) is fixedly connected to the inner side end of the flip clamp (632); a second gear rod (628) meshing with a third gear (612) is slidably connected to the upper and lower sides of the support plate (61); a push rod (629) is fixedly connected to the outer side end of the second gear rod (628); and the push rod (629) is located on the V-shaped rod (635).

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