A welding fixture for a seat back frame

Abstract

This utility model relates to a welding fixture for a seat back frame, comprising a base frame, a longitudinal frame, a positioning component, and a clamping mechanism. Several sets of the positioning component and clamping mechanism are provided. The base frame is provided with a sliding groove. The positioning component includes a slider one, a slide rail, and a slider two. Slider one slides in cooperation with the base frame via the sliding groove, and slider two slides in cooperation with the slide rail. The longitudinal frame is fixed to slider two. Several sets of clamping mechanisms are provided on the longitudinal frame. Several sets of positioning components are provided on the base frame. Each positioning component is equipped with a clamping mechanism. The freely movable and adjustable clamping mechanism fixes each part of the seat back frame in the optimal welding posture according to the actual shape of the seat back frame, ensuring uniform weld and stable quality during welding. Furthermore, the flexible clamping mechanism can adapt to various sizes and shapes of seat back frames by adjusting its position and angle.

Description

Technical Field

[0001] This utility model relates to the field of seat welding fixtures, and in particular to a seat back frame welding fixture. Background Technology

[0002] Seats are an essential component of vehicles, mainly consisting of backrests and cushions. The backrest is made up of a backrest frame, foam material, and fabric. The driver's seat in a train cab is generally assembled from parts such as bent frame tubes, straight frame tubes, and reinforcing plates. To assemble these parts into a backrest frame that meets technical requirements, a special welding fixture needs to be designed.

[0003] Patent No. "202323140878.9" and Patent Title "A Seat Backrest Frame Welding Fixture" discloses a workbench; three bend tube limiting blocks distributed in a triangle on the top surface of the workbench to form a U-shaped placement area for placing and limiting the bend tubes of the frame; several reinforcing plate limiting blocks detachably fixedly disposed within the U-shaped placement area at positions corresponding to the reinforcing plates; and straight tube limiting blocks fixedly disposed on the top surface of the workbench and located at the opening of the U-shaped placement area to clamp the straight tubes of the frame in conjunction with the ends of the bend tubes.

[0004] The inventors believe that the welding fixture of this solution can only be positioned on one side of the seat frame, and cannot complete the welding of the seat frame in one go. The position of the positioning clamp is also not easy to adjust, resulting in poor flexibility in practical application. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a welding fixture for a seat back frame.

[0006] The present invention provides a welding fixture for a seat back frame, which adopts the following technical solution:

[0007] A welding fixture for a seat back frame includes a base frame, a longitudinal frame, a positioning assembly, and a clamping mechanism. Several sets of the positioning assembly and clamping mechanism are provided. The base frame has a sliding groove. The positioning assembly includes a slider one, a slide rail, and a slider two. Slider one slides in contact with the base frame via the sliding groove, and slider two slides in contact with the slide rail. The longitudinal frame is fixed to slider two. Several sets of the clamping mechanism are provided on the longitudinal frame. Several sets of positioning assemblies are provided on the base frame, and each positioning assembly has a clamping mechanism.

[0008] Preferably, the clamping mechanism includes a pressure head assembly and a pressure block. The pressure block is disposed on the sliding block, and the pressure head assembly is disposed on the pressure block. The pressure head assembly achieves the fixation of the back frame through the cooperation of the pressure block.

[0009] Preferably, the longitudinal frame is provided with three sets of columns, and each of the three sets of columns is provided with a clamping mechanism, wherein two sets of clamping mechanisms are inclinedly arranged on the corresponding columns.

[0010] Preferably, the pressure block is provided with a V-shaped groove, and the skeleton is placed in the V-shaped groove.

[0011] Preferably, a V-shaped groove is provided on the column.

[0012] Preferably, the base frame is provided with a crossbeam, the crossbeam has a sliding groove, and the crossbeam is correspondingly provided with a positioning component and a clamping mechanism.

[0013] Preferably, the bottom of the slider one of the positioning component is provided with a bolt. By adjusting the tightness of the bolt, the slider one can be fixed to the base frame. Similarly, the slider two can be fixed to the slide rail by adjusting the tightness of the bolt.

[0014] In summary, this utility model has at least one of the following beneficial technical effects:

[0015] 1. The freely movable and adjustable clamping mechanism fixes each part of the backrest frame in the optimal welding posture according to the actual shape of the frame, ensuring uniform weld and stable quality during welding. The flexible clamping mechanism can be adjusted in position and angle to adapt to various sizes and shapes of seat backrest frames.

[0016] 2. All three sets of columns on the longitudinal frame are equipped with clamping mechanisms, which can fix the workpiece from different directions. Among them, the two sets of inclined clamping mechanisms can better adapt to the shape of the skeleton and provide oblique clamping force, which works in conjunction with the vertical clamping force to effectively prevent the skeleton from shifting during the welding process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a welding fixture for a seat back frame.

[0018] Figure 2 This is a schematic diagram of a connected back skeleton.

[0019] Explanation of reference numerals in the attached drawings: 1. Backrest frame; 2. Base frame; 3. Longitudinal frame; 4. Positioning assembly; 41. Slider 1; 42. Slide rail; 43. Slider 2; 5. Clamping mechanism; 51. Pressure head assembly; 52. Pressure block; 6. Column; 7. V-groove; 8. Slide groove; 9. Crossbeam. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] Furthermore, "several" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0023] This utility model discloses a welding fixture for a seat back frame. (Refer to...) Figure 1-2 A welding fixture for a seat back frame includes a base frame 2, a longitudinal frame 3, a positioning assembly 4, and a clamping mechanism 5. The positioning assembly 4 and the clamping mechanism 5 are each provided with several sets. The base frame 2 is provided with a sliding groove 8. The positioning assembly 4 includes a first slider 41, a slide rail 42, and a second slider 43. The first slider 41 slides with the base frame 2 via the sliding groove 8, and the second slider 43 slides with the slide rail 42. The longitudinal frame 3 is fixed to the second slider 43. Bolts are provided at the bottom of the first slider 41 of the positioning assembly 4. By adjusting the tightness of the bolts, the first slider 41 can be fixed to the base frame 2. Similarly, the second slider 43 can be fixed to the slide rail 42 by adjusting the tightness of the bolts. The longitudinal frame 3 is provided with several sets of... The dry clamping mechanism 5 has several sets of positioning components 4 on the base frame 2. Each positioning component 4 is equipped with a clamping mechanism 5. The clamping mechanism 5 includes a pressure head assembly 51 and a pressure block 52. The pressure block 52 is set on the slider 43, and the pressure head assembly 51 is set on the pressure block 52. The pressure head assembly 51 fixes the backrest frame 1 through the cooperation of the pressure block 52. With this design, the freely movable and adjustable clamping mechanism 5 fixes each part of the backrest frame 1 in the optimal welding posture according to the actual shape of the backrest frame 1, ensuring that the weld is uniform and the quality is stable during welding. Moreover, the flexible clamping mechanism 5 can adapt to various sizes and shapes of seat backrest frames by adjusting the position and angle.

[0024] Three sets of columns 6 are provided on the longitudinal frame 3, and each of the three sets of columns 6 is equipped with a clamping mechanism 5. Two sets of clamping mechanisms 5 are inclinedly set on the corresponding columns 6. The pressure block 52 is provided with a V-groove 7, and the skeleton is placed in the V-groove 7. The columns 6 are correspondingly provided with V-grooves 7. The base frame 2 is provided with a crossbeam 9, and the crossbeam 9 is provided with a sliding groove 8. The crossbeam 9 is correspondingly provided with a positioning component 4 and a clamping mechanism 5. The three sets of columns 6 on the longitudinal frame 3 are all equipped with clamping mechanisms 5, which can fix the workpiece from different directions. The two sets of inclined clamping mechanisms 5 can better adapt to the shape of the skeleton and provide oblique clamping force, which works in conjunction with the vertical clamping force to effectively prevent the skeleton from shifting during the welding process.

[0025] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A seat and backrest frame welding tool, characterized by: The system includes a base frame (2), a longitudinal frame (3), a positioning component (4), and a clamping mechanism (5). The positioning component (4) and the clamping mechanism (5) are provided in several sets. The base frame (2) is provided with a sliding groove (8). The positioning component (4) includes a slider one (41), a slide rail (42), and a slider two (43). The slider one (41) is slidably engaged with the base frame (2) through the sliding groove (8). The slider two (43) is slidably engaged with the slide rail (42). The longitudinal frame (3) is fixed on the slider two (43). The longitudinal frame (3) is provided with several sets of the clamping mechanism (5). The base frame (2) is provided with several sets of positioning components (4). The positioning components (4) are respectively provided with the clamping mechanism (5).

2. The seat and backrest frame welding tooling of claim 1, wherein: The clamping mechanism (5) includes a pressure head assembly (51) and a pressure block (52). The pressure block (52) is disposed on the sliding block (43), and the pressure head assembly (51) is disposed on the pressure block (52). The pressure head assembly (51) fixes the back frame (1) through the cooperation of the pressure block (52).

3. The seat and backrest frame welding tooling of claim 1, wherein: The longitudinal frame (3) is provided with three sets of columns (6), and each of the three sets of columns (6) is provided with a clamping mechanism (5), wherein two sets of clamping mechanisms (5) are inclinedly arranged on the corresponding columns (6).

4. The seat and backrest frame welding tooling of claim 2, wherein: The pressure block (52) is provided with a V-shaped groove (7), and the skeleton is placed in the V-shaped groove (7).

5. The seat and backrest frame welding fixture of claim 3, wherein: The column (6) is provided with a corresponding V-shaped groove (7).

6. The seat and backrest frame welding fixture of claim 1, wherein: The base frame (2) is provided with a crossbeam (9), the crossbeam (9) is provided with a sliding groove (8), and the crossbeam (9) is provided with a positioning component (4) and a clamping mechanism (5).

7. The seat back frame welding fixture according to any one of claims 1-6, wherein: The bottom of the slider one (41) of the positioning component (4) is provided with a bolt. By adjusting the tightness of the bolt, the slider one (41) can be fixed to the base frame (2). Similarly, the slider two (43) can be fixed to the slide rail (42) by adjusting the tightness of the bolt.

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