Vehicle door frame welding and fixing device

Abstract

The utility model relates to the technical field of welding fixing devices, in particular to a vehicle door frame welding fixing device which comprises a working table, a plurality of supporting legs are fixedly connected to the lower end of the working table, two vertical plates are fixedly connected to the upper end of the working table in a front-back symmetry mode, and a rotating shaft is rotationally connected between the vertical plates. A shaft body of the rotating shaft is fixedly connected with a mounting frame, and a limiting assembly is arranged on the mounting frame. Firstly, the distance between the two L-shaped clamping plates is adjusted to be matched with the automobile door frame, the automobile door frame is fixed, the upper face of the automobile door frame is welded, then the overturning motor drives the rotating shaft to rotate, the installation frame is driven to rotate, and overturning of the installation frame and the automobile door frame is completed. The time for disassembling the automobile door frame from the clamp, overturning the automobile door and then installing the automobile door frame on the clamp is saved, the labor amount of workers is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding fixing devices, in particular to a welding fixing device for a vehicle door frame. Background Art

[0002] Welds play a crucial role in the structural design of vehicle doors. They not only ensure a secure connection but also enhance the overall performance of the vehicle by strengthening the metal in certain areas. Doors are manufactured using a variety of techniques, with welded doors being particularly prominent. In these doors, the window frame is welded to the door body, creating a single, solid unit. In contrast, stamped doors are formed as a single piece, lacking visible welds, yet still offer the same strength.

[0003] There are still certain disadvantages in the use of automobile door frame welding fixtures. The automobile door frame has a certain contour, and it needs to be fixed with a fixture during welding to ensure the firmness of the door and the welding effect. However, when welding the automobile door frame, both sides need to be welded. After welding one side, it is usually necessary to remove the automobile door frame from the fixture, turn the automobile door frame over and then fix it, which wastes time and reduces work efficiency. Utility Model Content

[0004] In response to the above-mentioned shortcomings of the prior art, the utility model provides a door frame welding and fixing device, which can effectively solve the problem that the prior art automobile door frame needs to be welded on both sides during welding. After welding one side, it is usually necessary to remove the automobile door frame from the clamp, turn the automobile door frame over and then fix it, which is quite time-consuming.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] The utility model provides a door frame welding and fixing device, comprising a workbench, wherein the lower end of the workbench is fixedly connected to a plurality of supporting legs, the upper end of the workbench is fixedly connected to two vertical plates symmetrically in front and back, a rotating shaft is rotatably connected between the vertical plates, the shaft body of the rotating shaft is fixedly connected to a mounting frame, and a limit assembly is provided on the mounting frame;

[0007] The limiting assembly includes a bidirectional threaded rod rotatably connected in an installation frame, a limiting motor for driving the bidirectional threaded rod to rotate is fixedly installed on the outside of the installation frame, and the rod body of the bidirectional threaded rod is symmetrically threaded with an L-shaped clamping plate.

[0008] According to the above-mentioned door frame welding and fixing device, the lower end of the mounting frame is fixedly connected to the protrusion, and the upper end of the workbench is symmetrically fixedly connected to two grooves that are adapted to the shape of the protrusion.

[0009] According to the above-mentioned door frame welding and fixing device, a flip motor for driving the rotating shaft to rotate is fixedly installed on one of the vertical plates, and a handle is fixedly connected to the end of the mounting frame away from the rotating shaft.

[0010] According to the above-mentioned door frame welding and fixing device, two clearance grooves are symmetrically provided on the workbench, and a buffer assembly is provided in one of the clearance grooves.

[0011] According to the above-mentioned door frame welding and fixing device, the buffer assembly includes a plurality of through holes opened on the workbench and connected to the giveway groove, each of the through holes is slidably connected to a lifting rod, and the upper ends of the plurality of lifting rods are commonly fixedly connected to a buffer plate, and a plurality of buffer springs are fixedly connected between the buffer plate and the giveway groove, and the plurality of buffer springs are all located on the outside of the lifting rod.

[0012] According to the above-mentioned door frame welding and fixing device, a guide rod is fixedly connected in the installation frame, and the guide rod is slidably connected with two L-shaped clamping plates.

[0013] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects:

[0014] The utility model first limits the automobile door frame by means of two movable L-shaped limiting plates. Since the distance between the two L-shaped clamping plates is adjustable, it is suitable for limiting the automobile door frames of different sizes. The distance between the two L-shaped clamping plates is adjusted to a distance suitable for the automobile door frame. The automobile door frame is fixed, the upper surface of the automobile door frame is welded, and then the rotating shaft is driven by a flip motor to rotate, thereby driving the installation frame to rotate. After the flipping of the installation frame and the automobile door frame is completed, the other side can be welded, which saves the time of disassembling the automobile door frame from the clamp, flipping the automobile door and then installing it on the clamp, thereby reducing the labor of workers and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort.

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

[0017] Figure 2 for Figure 1 A schematic diagram of the structure of the enlarged part A;

[0018] Figure 3 for Figure 1 Schematic diagram of the structure at the middle buffer plate.

[0019] Figure numerals: 1. workbench; 2. support leg; 3. vertical plate; 4. rotating shaft; 5. flip motor; 6. mounting frame; 7. bidirectional threaded rod; 8. limit motor; 9. L-shaped clamping plate; 10. clearance groove; 11. lifting rod; 12. buffer plate; 13. buffer spring; 14. groove; 15. protrusion; 16. handle. DETAILED DESCRIPTION

[0020] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0021] The present invention will be further described below with reference to the embodiments.

[0022] Example: Refer to Figures 1 to 3 A door frame welding and fixing device includes a workbench 1, the lower end of the workbench 1 is fixedly connected to a plurality of supporting legs 2, the upper end of the workbench 1 is symmetrically fixedly connected to two vertical plates 3, the vertical plates 3 are rotatably connected with a rotating shaft 4, the shaft body of the rotating shaft 4 is fixedly connected to a mounting frame 6, the lower end of the mounting frame 6 is fixedly connected to a protrusion 15, and the upper end of the workbench 1 is symmetrically fixedly connected to two grooves 14 that are adapted to the shape of the protrusion 15, ensuring that the mounting frame 6 is in a horizontal state, which is convenient for the welding work of the automobile door frame. On the other hand, it can ensure the stability of the mounting frame 6, further ensuring the accuracy of the welding work.

[0023] A flip motor 5 for driving the rotating shaft 4 to rotate is fixedly installed on one of the vertical plates 3, and a handle 16 is fixedly connected to the end of the mounting frame 6 away from the rotating shaft 4. The flip motor 5 and the handle 16 are set. When flipping, the flip motor 5 can be selected to flip electrically, or the handle 16 can be used to manually flip the mounting frame 6 to avoid the situation where the flip motor 5 cannot be used and it is inconvenient to flip the mounting frame 6 during a power outage.

[0024] A limiting assembly is provided on the mounting frame 6. Specifically, the limiting assembly includes a bidirectional threaded rod 7 rotatably connected within the mounting frame 6. A limiting motor 8 for driving the bidirectional threaded rod 7 to rotate is fixedly installed on the outside of the mounting frame 6. The rod body of the bidirectional threaded rod 7 is symmetrically threadedly connected with an L-shaped clamping plate 9. A guide rod is fixedly connected within the mounting frame 6. The guide rod is slidably connected to the two L-shaped clamping plates 9. The guide rod is provided to ensure the stability of the movement of the L-shaped clamping plate 9.

[0025] Two give-way grooves 10 are symmetrically provided on the workbench 1, and a buffer assembly is provided in one of the give-way grooves 10. Specifically, the buffer assembly includes a plurality of through holes provided on the workbench 1 and connected to the give-way groove 10, each through hole is slidably connected to a lifting rod 11, and the upper ends of the plurality of lifting rods 11 are commonly fixedly connected to a buffer plate 12, and a plurality of buffer springs 13 are fixedly connected between the buffer plate 12 and the give-way groove 10, and the plurality of buffer springs 13 are all located on the outside of the lifting rod 11. The buffer springs 13 are arranged on the outside of the lifting rod 11 to avoid the problem of elastic deformation of the buffer springs 13.

[0026] The working principle of this utility model is as follows:

[0027] First, place the car door frame on the upper end of the buffer plate 12, and turn the convex surface of the car door frame upward. The car door frame is located between the two L-shaped clamping plates 9. The limit motor 8 drives the bidirectional threaded rod 7 to rotate. Under the limit of the guide rod, the two L-shaped clamping plates 9 are driven to move relative to each other, reducing the distance between the two L-shaped clamping plates 9 until it is adjusted to a distance that matches the car door frame. The two L-shaped clamping plates 9 fix the car door frame, and the car door frame can be welded. After the above welding is completed, the flipping motor 5 drives the rotating shaft 4 to rotate, driving the mounting frame 6 to rotate, completing the flipping of the mounting frame 6 and the car door frame, and then the other side can be welded.

[0028] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A door frame welding and fixing device, characterized in that: The invention comprises a workbench (1), wherein the lower end of the workbench (1) is fixedly connected to a plurality of supporting legs (2), the upper end of the workbench (1) is fixedly connected to two vertical plates (3) in a front-back symmetrical manner, a rotating shaft (4) is rotatably connected between the vertical plates (3), the shaft body of the rotating shaft (4) is fixedly connected to a mounting frame (6), and a limit assembly is provided on the mounting frame (6); The limiting assembly comprises a bidirectional threaded rod (7) rotatably connected within a mounting frame (6), a limiting motor (8) for driving the bidirectional threaded rod (7) to rotate is fixedly mounted on the outside of the mounting frame (6), and an L-shaped clamping plate (9) is symmetrically threadedly connected to the rod body of the bidirectional threaded rod (7).

2. A door frame welding and fixing device according to claim 1, characterized in that: The lower end of the mounting frame (6) is fixedly connected to a protrusion (15), and the upper end of the workbench (1) is symmetrically fixedly connected to two grooves (14) whose shapes match the protrusion (15).

3. The door frame welding and fixing device according to claim 1, characterized in that: A flip motor (5) for driving the rotating shaft (4) to rotate is fixedly mounted on one of the vertical plates (3), and a handle (16) is fixedly connected to one end of the mounting frame (6) away from the rotating shaft (4).

4. A door frame welding and fixing device according to claim 1, characterized in that: Two clearance grooves (10) are symmetrically provided on the workbench (1), wherein a buffer component is provided in one of the clearance grooves (10).

5. A door frame welding and fixing device according to claim 4, characterized in that: The buffer assembly comprises a plurality of through holes opened on the workbench (1) and connected to the clearance groove (10), each of the through holes being slidably connected to a lifting rod (11), the upper ends of the plurality of lifting rods (11) being fixedly connected to a buffer plate (12), a plurality of buffer springs (13) being fixedly connected between the buffer plate (12) and the clearance groove (10), and the plurality of buffer springs (13) being located on the outside of the lifting rod (11).

6. The door frame welding and fixing device according to claim 1, characterized in that: A guide rod is fixedly connected inside the installation frame (6), and the guide rod is slidably connected to two L-shaped clamping plates (9).

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