Automobile rear wall outer plate welding supporting frame

Abstract

The utility model relates to the technical field of automobile rear wall outer plate welding, in particular to an automobile rear wall outer plate welding supporting frame which comprises a movable bottom plate. The supporting plate is arranged on the surface of the movable bottom plate, and a vacuum assembly and a mounting rod are arranged on the surface of the supporting plate; and the connecting piece is arranged on the surface of the mounting rod, and a vacuum suction cup is arranged on the surface of the connecting piece and used for being matched with a vacuum assembly to adsorb the back panel. The multiple sets of slidable connecting pieces are matched with the vacuum suction cups, it is ensured that the vacuum suction cups are evenly attached to the irregular curved surface of the rear panel through self-adaptive sliding of the sliding rods and buffering of the springs, stable clamping is achieved, the welding precision is improved, the rear panel can be accurately installed at the tail of an automobile through cooperation of the lifting assembly, the adjusting assembly and the driving assembly, and the welding efficiency is improved. And the welding operation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of outer panel welding technology, and in particular to a welding support frame for the rear outer panel of an automobile. Background Technology

[0002] The welding of the rear panel of a car refers to the process of fixing the rear panel of a car to the vehicle frame through welding. This process is crucial to ensuring the structural strength and safety of the vehicle. The rear panel of a car is the tailgate of the trunk, that is, the area below the trunk. Simply put, it is the tailgate at the rear of the trunk. Structurally, it is located on the inside of the rear bumper, above the junction of the trunk floor and the trunk latch position. During the processing of the rear panel, the rear panel and the upper cover need to be assembled and welded.

[0003] The outer panel is usually a complex, irregular curved surface. Traditional fixing fixtures or single suction cup structures are difficult to fit evenly against the surface of the plate, resulting in uneven distribution of clamping force. During the welding process, the plate is prone to displacement or deformation, which seriously affects the welding accuracy and quality. Moreover, the size and shape of the rear panel vary greatly between different car models. Traditional special fixtures require frequent tooling changes, resulting in low production flexibility and high cost. Utility Model Content

[0004] The purpose of this utility model is to provide a welding support frame for the rear outer panel of an automobile, which solves the problem that the existing technology is inconvenient for clamping and supporting the rear panel.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A welding support frame for the outer rear panel of an automobile includes a movable base plate; a support plate disposed on the surface of the movable base plate, the surface of the support plate being provided with a vacuum assembly and a mounting rod; and a connector disposed on the surface of the mounting rod, the surface of the connector being provided with a vacuum suction cup for cooperating with the vacuum assembly to adsorb the rear panel. Multiple sets of connectors are provided, each connector including a sliding rod that can slide on the mounting rod, the vacuum suction cup being fixed to the end of the sliding rod.

[0007] Preferably, the connector further includes a spring, the two ends of which are fixed to the slide rod and the mounting rod respectively. A limiting rod is slidably provided on the top of the mounting rod to limit the position of the slide rod. A long rod is provided on the top of the mounting rod, and the limiting rod and the long rod are slidably connected.

[0008] Preferably, the top of the pallet is provided with a lifting assembly. The lifting assembly includes two connecting rods and two electric telescopic rods. The two connecting rods are slidably inserted into the top of the pallet, and the two electric telescopic rods are fixedly installed on the top of the pallet. The free ends of the two electric telescopic rods are respectively fixed to the two connecting rods, and the mounting rod is disposed between the two connecting rods.

[0009] Preferably, the surface of the connecting rod is provided with a driving assembly, which includes a motor, a worm, a worm wheel, and a rotating shaft. The rotating shaft is fixedly installed at both ends of the mounting rod, and the mounting rod is rotatably connected to the connecting rod through the rotating shaft. The worm wheel is fixedly installed on the surface of the rotating shaft, the motor is fixedly installed inside the connecting rod, and the worm is fixedly installed at the free end of the motor. The worm and the worm wheel mesh.

[0010] Preferably, the surface of the mounting rod is rotatably connected to two clips for securing the long rod.

[0011] The vacuum assembly includes a vacuum pump, a main pipe, and hoses. The vacuum pump and the main pipe are both fixed to the support plate. The pumping end of the vacuum pump is connected to the main pipe. The number of hoses is the same as the number of vacuum suction cups and they correspond one-to-one. The two ends of the hoses are connected to the vacuum suction cups and the main pipe, respectively.

[0012] Preferably, an adjustment assembly is provided between the movable base plate and the support plate. The adjustment assembly includes a cylinder, a connecting block, and a slider. The cylinder is fixedly installed on the surface of the movable base plate, the connecting block is fixedly installed on the free end of the cylinder, and the slider is slidably connected to the bottom of the support plate. The bottom of the support plate is rotatably connected to the movable base plate near the port, and the connecting block and the slider are rotatably connected.

[0013] This utility model has at least the following beneficial effects:

[0014] Multiple sets of sliding connectors work in conjunction with the vacuum suction cup. Through the adaptive sliding of the slide rod and the buffering of the spring, the vacuum suction cup is ensured to fit evenly against the irregular curved surface of the rear panel, achieving stable clamping and improving welding accuracy. The lifting assembly, adjustment assembly and drive assembly work together to allow the rear panel to be accurately installed at the rear of the car, facilitating welding operations. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This utility model Figure 1 Side view;

[0018] Figure 3 This is a schematic diagram of the adjustment component structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the slider structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the flexible hose structure of this utility model;

[0021] Figure 6 This is a schematic diagram of the connecting rod structure of this utility model;

[0022] Figure 7 This utility model Figure 6 Schematic diagram of the structure at point A in the middle;

[0023] Figure 8 This is a sectional view of the mounting rod of this utility model.

[0024] In the diagram: 1. Movable base plate; 2. Support plate; 3. Vacuum assembly; 31. Vacuum pump; 32. Main pipe; 33. Hoses; 4. Lifting assembly; 41. Connecting rod; 42. Electric telescopic rod; 5. Drive assembly; 51. Rotating shaft; 52. Worm gear; 53. Worm; 54. Motor; 6. Mounting rod; 7. Buckle; 8. Connector; 81. Long rod; 82. Limiting rod; 83. Slide rod; 84. Spring; 9. Vacuum suction cup; 91. Rubber pad; 10. Adjustment assembly; 101. Cylinder; 102. Connecting block; 103. Slider. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that can control it.

[0029] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] Reference Figure 1-8 A welding support frame for the rear panel of an automobile includes a movable base plate 1, welded from Q345B steel, with four polyurethane casters with electromagnetic locking function on the bottom surface, each caster bearing a load of 2 tons; a support plate 2, which is set on the surface of the movable base plate 1, and has a vacuum assembly 3 and a mounting rod 6 on its surface; and a connector 8, which is set on the surface of the mounting rod 6, and has a vacuum suction cup 9 on its surface for cooperating with the vacuum assembly 3 to adsorb the rear panel. Multiple sets of connectors 8 are provided, and each connector 8 includes a slide rod 83 that can slide on the mounting rod 6. The vacuum suction cup 9 is fixed to the end of the slide rod 83, and a rubber pad 91 is fixedly installed on the surface of the vacuum suction cup 9.

[0031] The movable base plate 1 provides support and a base for movement. The support plate 2 is fixed on the movable base plate 1, and the vacuum assembly 3 on its surface generates an adsorption force through the vacuum suction cups 9, making contact with the rear panel. The slide bar 83 of the connector 8 can slide on the mounting rod 6, allowing the multiple vacuum suction cups 9 to adaptively adjust their positions according to the irregular shape of the rear panel until all suction cups are evenly attached to the surface of the panel, achieving stable clamping.

[0032] Furthermore, the connector 8 also includes a spring 84, with both ends of the spring 84 fixed to the slide rod 83 and the mounting rod 6 respectively. A limiting rod 82 is slidably mounted on the top of the mounting rod 6 to limit the position of the slide rod 83. A long rod 81 is mounted on the top of the mounting rod 6, and the limiting rod 82 and the long rod 81 are slidably connected. The slide rod 83 has an "L"-shaped structure. The end of the spring 84 is fixedly connected to the side wall of the slide rod 83. Teeth are evenly distributed on the top of the slide rod 83. A triangular block matching the teeth is mounted on the bottom of the limiting rod 82. The triangular block, inserted into the gap between the teeth, can fix the slide rod 83. A buckle 7 is rotatably connected to the top of the mounting rod 6. The buckle 7, when fastened to the top of the long rod 81, prevents the long rod 81 from moving upwards. A protrusion is located in the middle of the limiting rod 82, and the long rod 81 is positioned above this protrusion. Therefore, when the buckle 7 engages the long rod 81, the limiting rod 82 cannot move upwards, thus fixing the sliding rod 83 and preventing it from sliding. A round block is located at the top of the limiting rod 82. When it is necessary to remove the restriction on all the limiting rods 82, simply lift the long rod 81 upwards, causing it to move all the limiting rods 82 upwards. At this point, the sliding rod 83, no longer restricted by the limiting rods 82, moves forward uniformly under the action of the spring 84, facilitating future use.

[0033] Spring 84 connects slide bar 83 and mounting rod 6, providing cushioning and restoring force. When the rear panel is placed on the suction cup, slide bar 83 slides down due to gravity, compressing spring 84. After adjustment, limiting rod 82 engages with the teeth of slide bar 83 via a triangular block, fixing the position of slide bar 83. Long rod 81 is slidably connected to limiting rod 82. Pulling long rod 81 upwards unlocks all limiting rods 82, allowing slide bar 83 to reset under the action of spring 84. Simultaneously, pressing it acts on the protrusion, causing it to simultaneously restrict all slide bars 83. The cushioning effect of spring 84 prevents sudden impact of slide bar 83, protecting the equipment and rear panel. The locking mechanism of limiting rod 82 and teeth ensures that the position of slide bar 83 is fixed, preventing accidental sliding and improving safety. The linkage unlocking design of long rod 81 simplifies operation and allows for quick reset of all slide bars 83, facilitating loading and unloading.

[0034] Furthermore, a lifting assembly 4 is provided on the top of the pallet 2. The lifting assembly 4 includes two connecting rods 41 and two electric telescopic rods 42. The two connecting rods 41 are slidably inserted into the top of the pallet 2, and the two electric telescopic rods 42 are fixedly installed on the top of the pallet 2. The free ends of the two electric telescopic rods 42 are respectively fixed to the two connecting rods 41. The mounting rod 6 is set between the two connecting rods 41. The electric telescopic rods 42 are servo electric cylinders with a stroke of 300mm, a positioning accuracy of ±0.1mm, and a maximum thrust of 2 tons.

[0035] When the electric telescopic rod 42 is activated, the telescopic rod extends or retracts, causing the connecting rod 41 to slide vertically on the support plate 2, thereby adjusting the overall height of the mounting rod 6 to meet the height requirements of different work positions. The precise control of the electric telescopic rod 42 enables stepless adjustment of the height of the mounting rod 6, improving welding adaptability. The cooperation structure between the connecting rod 41 and the electric telescopic rod 42 is simple and reliable, facilitating maintenance and operation. The height adjustability expands the applicability of the support frame, meeting the needs of different vehicle models or welding positions. The connecting rod 41 always slides on the support plate 2, improving stability.

[0036] Furthermore, a drive assembly 5 is provided on the surface of the connecting rod 41. The drive assembly 5 includes a motor 54, a worm gear 53, a worm wheel 52, and a rotating shaft 51. The rotating shaft 51 is fixedly installed at both ends of the mounting rod 6. The mounting rod 6 is rotatably connected to the connecting rod 41 through the rotating shaft 51. The worm wheel 52 is fixedly installed on the surface of the rotating shaft 51. The motor 54 is fixedly installed inside the connecting rod 41. The worm gear 53 is fixedly installed at the free end of the motor 54. The worm gear 53 and the worm wheel 52 mesh. The motor 54 is a servo motor with a rated power of 1kW, equipped with a planetary reducer, and an output torque of 50N·m.

[0037] Motor 54 drives worm gear 53 to rotate, worm gear 53 meshes with worm wheel 52, driving shaft 51 to rotate, which in turn causes mounting rod 6 to rotate around shaft 51. By controlling the direction and speed of motor 54, the tilt angle of mounting rod 6 can be precisely adjusted, changing the posture of the rear panel. The worm gear 53 and worm wheel 52 transmission has a self-locking characteristic, ensuring that the mounting rod 6 is stable and reliable after the angle is fixed, avoiding loosening due to external forces. Motor 54 drive realizes automated angle adjustment, improving operational accuracy and efficiency, reducing manual intervention, and the 360° rotation function allows the rear panel to be flexibly adjusted to any welding angle to adapt to complex process requirements.

[0038] Furthermore, the vacuum assembly 3 includes a vacuum pump 31, a main pipe 32, and hoses 33. Both the vacuum pump 31 and the main pipe 32 are fixed to the support plate 2. The suction end of the vacuum pump 31 is connected to the main pipe 32. The number of hoses 33 is the same as that of the vacuum suction cups 9 and they correspond one-to-one. The two ends of the hoses 33 are connected to the vacuum suction cups 9 and the main pipe 32, respectively. The vacuum pump 31 is a rotary vane vacuum pump 31 with a suction rate of 60L / s and an ultimate vacuum of -0.1MPa. The main pipe 32 is a φ50mm galvanized steel pipe, arranged along the edge of the support plate 2. The hoses 33 are negative pressure resistant rubber tubes with an inner diameter of φ12mm, corresponding one-to-one with the vacuum suction cups 9.

[0039] Vacuum pump 31 of vacuum assembly 3 provides negative pressure to all vacuum suction cups 9 through main pipe 32 and hoses 33. Vacuum pump 31 extracts air from main pipe 32, creating a vacuum between hoses 33 and suction cups, thereby adsorbing the rear panel. Rubber pad 91 enhances the seal between suction cups and the panel, preventing air leakage and protecting the panel surface. The vacuum adsorption method provides uniform and strong clamping force, ensuring the rear panel is firmly fixed during welding. The design of rubber pad 91 avoids direct contact between suction cups and the panel, preventing surface scratches and improving product quality. The parallel structure of main pipe 32 and multiple hoses 33 ensures that all suction cups work synchronously, improving adsorption efficiency.

[0040] Furthermore, an adjustment assembly 10 is provided between the movable base plate 1 and the support plate 2. The adjustment assembly 10 includes a cylinder 101, a connecting block 102, and a slider 103. The cylinder 101 is fixedly installed on the surface of the movable base plate 1, the connecting block 102 is fixedly installed on the free end of the cylinder 101, and the slider 103 is slidably connected to the bottom of the support plate 2. The bottom of the support plate 2 is rotatably connected to the movable base plate 1 near the port, and the connecting block 102 and the slider 103 are rotatably connected.

[0041] When cylinder 101 extends or retracts, it pushes connecting block 102 to move, causing slider 103 to slide at the bottom of support plate 2. Since the bottom of support plate 2 is rotatably connected to movable base plate 1, the sliding of slider 103 causes support plate 2 to tilt around the rotation point, thereby adjusting the left and right tilt angle of support plate 2. Cylinder 101 drives the rapid adjustment of the tilt angle of support plate 2 to adapt to the spatial requirements of different welding positions. The rotatable connection between slider 103 and connecting block 102 ensures that the tilting process of support plate 2 is smooth and avoids jamming. The tilt adjustment function enhances the flexibility of the support frame and can optimize the installation posture of the rear panel under complex working conditions.

[0042] The various components are connected by a PLC controller with an integrated touchscreen human-machine interface, which allows for preset rotation angle, lifting height, and tilt angle of the rear panel. The vacuum pump 31, electric telescopic rod 42, motor 54, and cylinder 101 are all controlled by servo drives or solenoid valves to achieve automated operation.

[0043] A pressure sensor is installed at vacuum suction cup 9 to monitor the suction force in real time; an angle encoder is installed at rotating shaft 51 to accurately feed back the rotation angle of mounting rod 6; and a displacement sensor is built into electric telescopic rod 42 to control the lifting height.

[0044] In summary:

[0045] Move the base plate 1 to the vicinity of the welding station and fix its position using the bottom-mounted locking wheels to ensure the stability of the support frame.

[0046] Start the drive assembly 5 to rotate the mounting rod 6 to the initial position with the vacuum suction cup 9 facing upwards, which facilitates the placement of the rear panel.

[0047] The rear panel of the car is placed smoothly on the upward-facing vacuum suction cup 9. The gravity of the rear panel causes the slide rod 83 of the connector 8 to slide downward along the mounting rod 6. Since the rear panel is irregularly shaped, the slide rod 83 at different positions slides at different distances until the rubber pads 91 of all vacuum suction cups 9 are evenly attached to the surface of the rear panel, achieving self-adaptive positioning.

[0048] Press the long rod 81 to move all the limiting rods 82, so that the triangular block at the bottom of the limiting rod 82 is aligned with the tooth gap at the top of the slide rod 83. Then use the buckle 7 to fix the long rod 81 so that it cannot move. At this time, the triangular block is embedded in the teeth, locking the position of the slide rod 83.

[0049] When the vacuum assembly 3 is activated, the vacuum pump 31 draws air from the vacuum suction cup 9 through the main pipe 32 and the hose 33, creating a negative pressure that firmly adheres and fixes the rear panel. The rubber pad 91 enhances the sealing and protects the surface of the panel.

[0050] Restart drive assembly 5 and adjust the rear panel from a horizontal to a vertical position for docking and installation with the rear of the car.

[0051] Unlock the wheels of the movable base plate 1, move the support frame as a whole to the target position at the rear of the car, and then relock the wheels.

[0052] According to the actual installation requirements, adjust the left and right tilt angles of the tray 2 by adjusting component 10 until a suitable angle is achieved.

[0053] Activate the lifting assembly 4 and adjust the overall height of the mounting rod 6 to adapt to the installation height at the rear of the car.

[0054] If the tilt angle of the rear panel needs to be adjusted, the rotation angle of the mounting rod 6 can be finely adjusted again through the drive component 5 to ensure precise alignment of the rear panel.

[0055] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A welding support frame for the outer rear panel of an automobile, characterized in that, Including the movable base plate (1); A tray (2) is disposed on the surface of a movable base plate (1), and a vacuum assembly (3) and a mounting rod (6) are disposed on the surface of the tray (2). Connector (8), the connector (8) is disposed on the surface of the mounting rod (6), the surface of the connector (8) is provided with a vacuum suction cup (9) for cooperating with the vacuum assembly (3) to adsorb the rear panel, the connector (8) is configured in multiple sets, the connector (8) includes a slide rod (83) that can slide on the mounting rod (6), the vacuum suction cup (9) is fixed to the end of the slide rod (83).

2. The automotive rear panel welding support frame according to claim 1, characterized in that, The connector (8) also includes a spring (84), the two ends of which are fixed to the slide rod (83) and the mounting rod (6) respectively. A limiting rod (82) is slidably provided on the top of the mounting rod (6) to limit the position of the slide rod (83). A long rod (81) is provided on the top of the mounting rod (6), and the limiting rod (82) and the long rod (81) are slidably connected.

3. The automotive rear panel welding support frame according to claim 2, characterized in that, The top of the pallet (2) is provided with a lifting assembly (4). The lifting assembly (4) includes two connecting rods (41) and two electric telescopic rods (42). The two connecting rods (41) are slidably inserted into the top of the pallet (2), and the two electric telescopic rods (42) are fixedly installed on the top of the pallet (2). The free ends of the two electric telescopic rods (42) are respectively fixed to the two connecting rods (41). The mounting rod (6) is arranged between the two connecting rods (41).

4. The automotive rear panel welding support frame according to claim 3, characterized in that, The surface of the connecting rod (41) is provided with a drive assembly (5), the drive assembly (5) includes a motor (54), a worm (53), a worm wheel (52) and a rotating shaft (51). The rotating shaft (51) is fixedly installed at both ends of the mounting rod (6). The mounting rod (6) is rotatably connected to the connecting rod (41) through the rotating shaft (51). The worm wheel (52) is fixedly installed on the surface of the rotating shaft (51). The motor (54) is fixedly installed inside the connecting rod (41). The worm (53) is fixedly installed at the free end of the motor (54). The worm (53) and the worm wheel (52) mesh.

5. The automotive rear panel welding support frame according to claim 4, characterized in that, The mounting rod (6) has two buckles (7) for fixing the long rod (81) by rotating on its surface.

6. The automotive rear panel welding support frame according to claim 1, characterized in that, The vacuum assembly (3) includes a vacuum pump (31), a main pipe (32) and a hose (33). The vacuum pump (31) and the main pipe (32) are both fixed to the support plate (2). The suction end of the vacuum pump (31) is connected to the main pipe (32). The number of hoses (33) is the same as that of the vacuum suction cups (9) and they correspond one-to-one. The two ends of the hoses (33) are connected to the vacuum suction cups (9) and the main pipes (32) respectively.

7. The automotive rear panel welding support frame according to claim 1, characterized in that, An adjustment assembly (10) is provided between the movable base plate (1) and the support plate (2). The adjustment assembly (10) includes a cylinder (101), a connecting block (102), and a slider (103). The cylinder (101) is fixedly installed on the surface of the movable base plate (1). The connecting block (102) is fixedly installed on the free end of the cylinder (101). The slider (103) is slidably connected to the bottom of the support plate (2). The bottom of the support plate (2) near the port is rotatably connected to the movable base plate (1). The connecting block (102) and the slider (103) are rotatably connected.

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