A welding fixture applied to front backrest main and vice driver back steel wire

Abstract

This utility model belongs to the field of welding fixtures and provides a welding fixture for the steel wires on the back of the driver and passenger seats of a front backrest. It includes: a base; a support mechanism and a clamping mechanism, both mounted on the base. The support mechanism supports the backrest frame to be welded and is clamped by the clamping mechanism to restrict movement of the backrest frame; a positioning mechanism and a pin mechanism. The positioning mechanism is mounted on the base and includes an inclined contouring platform on which the inclined backrest to be welded is placed. Compared with existing technologies, the advantages of this utility model are that the inclined contouring platform, combined with a locking pin that is movable and inserted into the inclined backrest, achieves precise positioning and stable fixation of the inclined backrest during the welding process. The retraction of the locking pin facilitates smooth removal of the product. As the anti-detachment structure moves on the base, the steel wires can stably adhere to the backrest frame and the inclined backrest, ensuring the accuracy of the welding position and preventing product quality from being affected by detachment or misalignment.

Description

Technical Field

[0001] This utility model belongs to the field of welding fixtures, specifically relating to a welding fixture for the steel wires on the back of the driver and passenger seats of the front seat back. Background Technology

[0002] In the automotive seat manufacturing industry, the front backrest frame, as a crucial component of the support structure, directly impacts the overall performance and safety of the seat due to its strength and structural stability. To enhance the load-bearing capacity of the backrest frame or to facilitate connections with other functional components, several steel wire structures are typically welded to its back during actual production. These steel wires not only serve as reinforcing ribs but also function as mounting points for critical components such as headrest guides and seatbelt guides.

[0003] However, the welding fixtures used in the existing technology still have many shortcomings, specifically in the following aspects:

[0004] 1. Traditional welding fixtures mostly use planar positioning, which cannot effectively match the back plate structure with an inclined angle, resulting in deviations in the welding position. Especially when welding steel wires on inclined surfaces, the lack of contour positioning design for inclined structures makes the relative position between the steel wire and the frame unstable, affecting the welding quality and also making it difficult to directly remove the product after welding.

[0005] 2. Existing clamps generally lack effective anti-detachment and clamping mechanisms. The steel wire is prone to slipping or lifting during clamping. It is also more likely to shift under thermal stress during welding, causing problems such as poor contact at the welding point and discontinuous weld, which in turn affects the structural strength and reliability.

[0006] 3. Most traditional fixtures still require manual adjustment and fixing in the clamping, pressing, and positioning stages. This is not only inefficient, but also prone to errors caused by human factors, making it difficult to ensure product consistency and the stability of mass production, and increasing the workload of subsequent quality inspection and rework. Utility Model Content

[0007] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a welding fixture for the steel wires on the back of the driver and passenger seats of the front seat back. This fixture is simple in structure, has good stability, ensures product fit, and facilitates the smooth removal of the product after welding.

[0008] The purpose of this utility model can be achieved by addressing the following technical problem: a welding fixture for the steel wires on the back of the driver and passenger seats of the front backrest is proposed, which is used to weld the first steel wire and the second steel wire to the backrest frame with the inclined portion, and the first steel wire and the second steel wire are welded together with an inclined back plate arranged parallel to the inclined portion, including: a base;

[0009] A support mechanism and a clamping mechanism are provided on the base. The support mechanism is used to support the backrest frame to be welded and is movably clamped by the clamping mechanism to restrict the movement of the backrest frame.

[0010] The positioning mechanism and the pin mechanism are provided. The positioning mechanism is mounted on the base and includes an inclined contouring platform on which the inclined back plate to be welded is placed. The pin mechanism is connected to the bottom wall of the contouring platform and includes a locking pin that can pass through the contouring platform and extend movably into the inclined back plate. The pin mechanism is pressed by the pressing mechanism to prevent displacement.

[0011] A first anti-detachment mechanism and a second anti-detachment mechanism, which are arranged at different heights, are disposed on the base. The first anti-detachment mechanism and the second anti-detachment mechanism are used to respectively fasten the first steel wire and the second steel wire, and when the first anti-detachment mechanism and the second anti-detachment mechanism move relative to the base, they are used to press the first steel wire and the second steel wire against the top wall and the side wall of the inclined back plate respectively.

[0012] In the aforementioned welding fixture for the steel wires on the back of the driver and passenger seats, the pin mechanism further includes a lifting cylinder and a lifting block. The lifting cylinder is connected to the contouring platform via a fixed column. The lifting block is installed at the output end of the lifting cylinder, and the locking pin is connected to both ends of the lifting block.

[0013] In the aforementioned welding fixture for the steel wires on the back of the driver and passenger seats, a protrusion is formed at the middle of the lifting block, and the protrusion movably abuts against the contouring platform.

[0014] In the aforementioned welding fixture applied to the steel wires on the back of the driver and passenger seats of the front seatback, both the first anti-detachment mechanism and the second anti-detachment mechanism include:

[0015] A support base with symmetrically arranged limit blocks, the limit blocks and the support base together forming a locking groove, the first steel wire and the second steel wire being locked into the locking groove;

[0016] An adjusting member is disposed on the base, and the adjusting member is movable relative to the base to move the support seat closer to or away from the contouring platform.

[0017] In the aforementioned welding fixture for the steel wires on the back of the driver and passenger seats, the adjusting component includes an adjusting block and a mounting block. The adjusting block has a locking hole, and the base has a waist-shaped hole communicating with the locking hole. The mounting block is vertically connected to the adjusting block, and a connecting hole is provided on the mounting block, which allows fasteners to pass through and connect to the support base.

[0018] In the aforementioned welding fixture for the steel wires on the back of the driver and passenger seats, the positioning mechanism further includes a first positioning block, a second positioning block, and a receiving block. The receiving block is detachably connected to the first positioning block, and the relative position of the first positioning block to the base can be adjusted. The second positioning block can adjust the height difference between itself and the receiving block in the vertical direction, and an inclined block is installed on the second positioning block. The contouring platform is connected to the inclined block.

[0019] In the aforementioned welding fixture for the steel wires on the back of the driver and passenger seats of the front backrest, the support mechanism includes an adjusting cylinder and a support column. The adjusting cylinder is installed on the bottom wall of the base, and the output shaft of the adjusting cylinder passes through the base and is connected to the support column to support the backrest frame above the base.

[0020] In the aforementioned welding fixture for the steel wires on the back of the driver and passenger seats of the front backrest, the clamping mechanism includes a clamping cylinder and a clamping block. The clamping cylinder is mounted on the base platform, and a flipping block is connected to the output end of the clamping cylinder. The clamping block is detachably connected to the bottom wall of the flipping block and is used to movably clamp the backrest frame onto the support column.

[0021] In the aforementioned welding fixture for the steel wires on the back of the driver and passenger seats of the front seat, the flipping block is also provided with several anti-detachment blocks, which are used to movably abut against the inclined back plate and the top opening of the engagement groove.

[0022] In the aforementioned welding fixture for the steel wires on the back of the driver and passenger seats of the front backrest, a number of abutment blocks are also provided on the base, and the abutment blocks movably abut against the side wall of the backrest frame.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] (1) The present invention provides a welding fixture for the steel wires on the back of the driver and passenger seats of the front backrest. The fixture uses a contoured platform set at an angle and a locking pin inserted into the inclined back panel to achieve precise positioning and stable fixation of the inclined back panel during the welding process. The retraction of the locking pin facilitates the smooth removal of the product. At the same time, the movement of the anti-detachment structure on the base platform allows the steel wires to stably fit the backrest frame and the inclined back panel, ensuring the accuracy of the welding position and avoiding the impact on the overall quality of the product due to detachment or misalignment.

[0025] (2) By adjusting the relative positions of the first positioning block, the second positioning block and the receiving block, the contouring platform can be positioned at different heights, thus making it suitable for welding processes between inclined back plates and steel wires of different specifications, which helps to improve the versatility and applicability of the welding fixture.

[0026] (3) The design of the clamping block provides a clamping and limiting effect for the backrest frame, and effectively avoids unnecessary vibration of the backrest frame during the welding process, which would affect the smoothness and quality of the welding. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of this application;

[0028] Figure 2 This is a schematic diagram of the structure when the inclined part, the first steel wire, and the second steel wire are in the position to be welded;

[0029] Figure 3 This is a schematic diagram of the installation structure of the positioning mechanism and the pin structure;

[0030] Figure 4 This is an exploded view of the area between the second positioning block and the first positioning block;

[0031] Figure 5 This is a schematic diagram of the first anti-loosening mechanism and the second anti-loosening structure;

[0032] Figure 6 This is a schematic diagram of the overall structure of the first anti-detachment structure.

[0033] In the diagram, 10 is the first steel wire; 11 is the second steel wire; 12 is the backrest frame; 120 is the inclined section; and 13 is the inclined back panel.

[0034] 2. Base; 20. Clamping block;

[0035] 3. Support mechanism; 30. Adjusting cylinder; 31. Support column;

[0036] 4. Clamping mechanism; 40. Clamping cylinder; 41. Clamping block; 42. Tilting block; 43. Anti-detachment block;

[0037] 5. Positioning mechanism; 50. Contouring platform; 51. First positioning block; 52. Second positioning block; 53. Receiving block; 540. Adjustment hole; 55. Inclined block;

[0038] 6. Pin mechanism; 60. Locking pin; 61. Lifting cylinder; 62. Lifting block; 620. Protruding block; 63. Fixing post;

[0039] 70. First anti-detachment mechanism; 71. Second anti-detachment structure; 720. Support base; 721. Limiting block; 721a. Engaging groove; 722. Adjusting component; 722a. Adjusting block; 722b. Mounting block; 722c. Locking hole; 722d. Connecting hole. Detailed Implementation

[0040] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0041] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0042] like Figures 1 to 6 As shown, this utility model discloses a welding fixture for the steel wires on the back of the driver and passenger seats of the front backrest. It is used to weld the first steel wire 10 and the second steel wire 11 to a backrest frame 12 with an inclined portion 120. An inclined backplate 13, parallel to the inclined portion 120, is welded between the first steel wire 10 and the second steel wire 11. The fixture includes: a base 2; a support mechanism 3 and a clamping mechanism 4, both mounted on the base 2. The support mechanism 3 supports the backrest frame 12 to be welded and is movably clamped by the clamping mechanism 4 to restrict the movement of the backrest frame 12; a positioning mechanism 5 and a pin mechanism 6. The positioning mechanism 5 is mounted on the base 2 and includes an inclined contouring platform 5. 0. The inclined back plate 13 to be welded is placed on the contouring platform 50; the pin mechanism 6 is connected to the bottom wall of the contouring platform 50. The pin mechanism 6 includes a locking pin 60 that can pass through the contouring platform 50 and extend movably into the inclined back plate 13, and is prevented from displacement by the pressing mechanism 4; the first anti-detachment mechanism 70 and the second anti-detachment mechanism are set on the base 2 with a height difference. The first anti-detachment mechanism 70 and the second anti-detachment mechanism are used to respectively lock the first steel wire 10 and the second steel wire 11, and when the first anti-detachment mechanism 70 and the second anti-detachment mechanism move relative to the base 2, they are used to press the first steel wire 10 and the second steel wire 11 against the top wall and the side wall of the inclined back plate respectively.

[0043] In this embodiment, the two ends of the first steel wire 10 and the second steel wire 11 are welded to the inclined portion 120 of the backrest frame 12, respectively. Simultaneously, the two steel wires are welded together via the inclined backplate 13. Specifically, as shown... Figures 1 to 6As shown, firstly, the worker or robot can place the backrest frame 12 to be welded on the support mechanism 3, relying on the support mechanism 3 to provide stable support for the backrest frame 12, especially to provide adaptive support for its inclined part 120, to prevent the workpiece from tilting or sliding in subsequent operations; then the clamping mechanism 4 is activated, and the clamping mechanism 4 applies pressure to the backrest frame 12 from above, firmly fixing it on the support mechanism 3, preventing displacement due to vibration or external force during the welding process. It is worth noting that the inclination of the contouring platform 50 in this embodiment is consistent with the inclination of the inclined back plate 13 on the entire workpiece. After the inclined back plate 13 is tightly attached, the pin mechanism 6 can drive the locking pin 60 through the contouring platform 50 and insert it into the preset hole inside the inclined back plate 13. With the cooperation of the above-mentioned clamping mechanism 4, the multi-directional limiting function of the inclined back plate 13 can be realized. Unlike the traditional fixed positioning structure, the locking pin 60 can retract into the contouring platform 50 after the inclined back plate 13 is welded, so as to avoid the product being affected by the position interference of the locking pin 60 or even collision damage when it is taken out, thus affecting the overall quality. Regarding the positioning between the steel wire and the inclined back panel 13, this embodiment inserts the two steel wires into their respective anti-detachment structures. Since the first anti-detachment mechanism 70 and the second anti-detachment mechanism are arranged with a height difference, it can ensure that different steel wires are welded at different height positions on the inclined back panel 13. As the anti-detachment mechanism moves relative to the base 2, it can drive the steel wires to move closer to the backrest frame 12 and finally make them tightly fit against the top and side walls of the inclined back panel. This method indirectly realizes the adjustment of the position of the steel wires, so that the steel wires can stably fit against the backrest frame 12 and the inclined back panel 13, ensuring the accuracy of the welding position and avoiding the impact on the overall quality of the product due to detachment or misalignment.

[0044] The pin mechanism 6 also includes a lifting cylinder 61 and a lifting block 62. The lifting cylinder 61 is connected to the contouring platform 50 by a fixing column 63. The lifting block 62 is installed at the output end of the lifting cylinder 61, and the locking pin 60 is connected to both ends of the lifting block 62.

[0045] like Figure 2 and Figure 3As shown, after the inclined back plate 13 to be welded is accurately placed on the contouring platform 50, the lifting cylinder 61 can then move the lifting block 62 closer to the contouring platform 50. During this process, the locking pin 60 passes through the contouring platform 50 and inserts into the pre-drilled hole in the inclined back plate 13, thus working with the contouring platform 50 to position and prevent the inclined back plate 13 from falling off, ensuring stability during subsequent welding operations. After the welding operation is completed, before the product is removed, the lifting cylinder 61 can be restarted to retract the locking pin 60 into the contouring platform 50, ensuring that the product can be smoothly removed without damage. It should be noted that in this embodiment, the fixing column 63 on the lifting cylinder 61 can be quickly installed on the contouring platform 50 using bolts, screws, or other components, simplifying the assembly process and reducing the possibility of operational errors.

[0046] Preferably, such as Figure 3 As shown, in this embodiment, a protrusion 620 is formed in the middle of the lifting block 62. The protrusion 620 replaces the lifting block 62 to contact the contouring platform 50. While limiting the movement distance of the locking pin 60, it also effectively reduces the contact area between the lifting block 62 and the contouring platform 50, reduces the manufacturing precision requirements of the contouring platform 50 and the lifting block 62, and avoids the lateral swaying problem that may occur during the driving process.

[0047] Both the first anti-detachment mechanism 70 and the second anti-detachment mechanism include: a support base 720, on which limit blocks 721 are symmetrically arranged, the limit blocks 721 and the support base 720 together form a locking groove 721a, the first steel wire 10 and the second steel wire 11 are locked into the locking groove 721a; and an adjusting member 722, which is arranged on the base 2 and can move relative to the base 2 to drive the support base 720 closer to or away from the contouring platform 50.

[0048] like Figure 5 and Figure 6 As shown, in this embodiment, multiple sets of the first and second anti-detachment structures 71 are provided to ensure that the first steel wire 10 and the second steel wire 11 can be welded to the inclined back plate 13 and the inclined part 120 in a horizontal posture. As the worker or robot inserts the first steel wire 10 and the second steel wire 11 into the locking groove 721a, the locking groove 721a can be designed with a U-shaped or V-shaped structure to prevent the steel wire from slipping out. After ensuring that the steel wire is fixed correctly, the adjusting component 722 can be activated to push the support seat 720 to move along the contouring platform 50. It should be noted that in this embodiment, the support seats 720 are all located on both sides of the contouring platform 50, thereby reserving enough space for the steel wire to accurately fit into the welding area of ​​the inclined back plate. In addition, the anti-detachment mechanism continuously provides limiting force during welding to prevent the steel wire from shifting due to welding heat deformation or mechanical vibration, thus ensuring the welding quality.

[0049] The adjusting component 722 includes an adjusting block 722a and a mounting block 722b. The adjusting block 722a has a locking hole 722c, and the base 2 has an oblong hole that communicates with the locking hole 722c. The mounting block 722b is vertically connected to the adjusting block 722a, and a connecting hole 722d is provided on the mounting block 722b. The connecting hole 722d allows a fastener to pass through and connect to the support base 720.

[0050] Furthermore, such as Figure 5 and Figure 6 As shown, the adjusting component 722 in this embodiment mainly consists of two parts: adjusting block 722a and mounting block 722b. The support base 720 can be connected and assembled with the mounting block 722b through the cooperation between fasteners (such as screws or bolts) and connecting holes 722d, which simplifies the assembly process and provides convenience for subsequent maintenance and replacement. When it is necessary to press the steel wire against the inclined back plate 13, the adjusting block 722a always moves closer to or further away from the contouring platform 50 along the length direction of the waist-shaped hole (not shown in the figure). After the welding position is determined, the adjusting block 722a can be restricted on the base 2 by passing screws or locking pins through the locking hole 722c and the waist-shaped hole, thus ensuring the stability of subsequent welding.

[0051] The positioning mechanism 5 also includes a first positioning block 51, a second positioning block 52, and a receiving block 53. The receiving block 53 is detachably connected to the first positioning block 51. The first positioning block 51 can adjust its relative position to the base 2. The second positioning block 52 can adjust the height difference between itself and the receiving block 53 in the vertical direction. An inclined block 55 is installed on the second positioning block 52, and the contouring platform 50 is connected to the inclined block 55.

[0052] like Figure 3 and Figure 4 As shown, similarly, in this embodiment, the first positioning block 51 can move relative to the base 2, the receiving block 53 can adjust its height position on the first positioning block 51, and the second positioning block 52 can also adjust its height position on the receiving block 53. Through the adjustment and cooperation between the two, the contouring platform 50 installed on the inclined block 55 can be in different height positions, thereby adapting to the welding height of the inclined back plate 13 on products of different specifications. It should be noted that in this embodiment, several adjustment holes 540 are provided on the first positioning block 51, the second positioning block 52 and the receiving block 53. The height adjustment method is the same as the adjustment method of the waist-shaped hole and the locking hole 722c, which will not be described in detail here.

[0053] The support mechanism 3 includes an adjusting cylinder 30 and a support column 31. The adjusting cylinder 30 is installed on the bottom wall of the base 2, and the output shaft of the adjusting cylinder 30 passes through the base 2 and is connected to the support column 31 to support the backrest frame 12 above the base 2.

[0054] Furthermore, such as Figure 1 and Figure 2 As shown, the support structure in this embodiment can also be used for welding processes of products of different specifications. That is, the height of the support column 31 can be adjusted by adjusting the cylinder 30, which can be quickly adjusted according to different models of backrest frame 12, greatly improving the versatility and applicability of the equipment. The stable support provided by the support column 31 helps to maintain the stability of the backrest frame 12 during the welding process, reduces errors caused by factors such as vibration, and improves welding quality. The entire support process can be completed automatically by program control, reducing manual intervention and improving production efficiency and consistency.

[0055] The pressing mechanism 4 includes a pressing cylinder 40 and a pressing block 41. The pressing cylinder 40 is mounted on the base 2, and a flipping block 42 is connected to the output end of the pressing cylinder 40. The pressing block 41 is detachably connected to the bottom wall of the flipping block 42 and is used to press the backrest frame 12 onto the support column 31.

[0056] Furthermore, such as Figure 1 and Figure 2 As shown, once the support column 31 provides stable support to the backrest frame 12, the clamping cylinder 40 can drive the flipping block 42 to rotate along the direction of the backrest frame 12 until the clamping block 41 presses against the backrest frame 12. The clamping block 41 can be customized with different contours according to the shape of the frame to improve fit and clamping stability. This structure not only improves the applicability and automation level of the welding fixture, but also significantly improves welding quality and production efficiency.

[0057] Preferably, in this embodiment, a plurality of anti-detachment blocks 43 are also provided on the flipping block 42, such as... Figure 5 As shown, when the support seat 720 drives the steel wire to stick to the side wall of the inclined back plate 13, the anti-detachment block 43 can move and press against the top opening of the inclined back plate 13 and the locking groove 721a respectively as the flipping block 42 flips, effectively preventing the parts from sliding or falling off during the welding process, improving operational safety, and ensuring the consistency of welding quality.

[0058] In a further preferred embodiment, this embodiment also provides several abutment blocks 20 on the base 2. While the backrest frame 12 is placed on the support column 31, the abutment blocks 20 move against the side wall of the backrest frame 12 to ensure the accuracy of the backrest frame 12 in the welding position, providing a stable reference for the entire product to be welded.

[0059] It should be noted that in this invention, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0060] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0061] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A welding fixture for the steel wires on the back of the driver and passenger seats of a front seat, used to weld a first steel wire and a second steel wire to a backrest frame having an inclined portion, wherein an inclined backplate parallel to the inclined portion is welded together between the first steel wire and the second steel wire, characterized in that, include: abutment; A support mechanism and a clamping mechanism are provided on the base platform. The support mechanism is used to support the backrest frame to be welded and is movably clamped by the clamping mechanism to restrict the movement of the backrest frame. The positioning mechanism and the pin mechanism are provided. The positioning mechanism is mounted on the base and includes an inclined contouring platform on which the inclined back plate to be welded is placed. The pin mechanism is connected to the bottom wall of the contouring platform and includes a locking pin that can pass through the contouring platform and extend movably into the inclined back plate. The pin mechanism is pressed by the pressing mechanism to prevent displacement. A first anti-detachment mechanism and a second anti-detachment mechanism, which are arranged at different heights, are disposed on the base. The first anti-detachment mechanism and the second anti-detachment mechanism are used to respectively fasten the first steel wire and the second steel wire, and when the first anti-detachment mechanism and the second anti-detachment mechanism move relative to the base, they are used to press the first steel wire and the second steel wire against the top wall and the side wall of the inclined back plate respectively.

2. The welding fixture for the steel wires on the back of the driver and passenger seats according to claim 1, characterized in that, The pin mechanism also includes a lifting cylinder and a lifting block. The lifting cylinder is connected to the contouring platform via a fixed column. The lifting block is installed at the output end of the lifting cylinder, and the locking pin is connected to both ends of the lifting block.

3. A welding fixture for the steel wires on the back of the driver and passenger seats of the front seat, as described in claim 2, is characterized in that... A protrusion is formed at the center of the lifting block, and the protrusion moves against the contouring platform.

4. A welding fixture for the steel wires on the back of the driver and passenger seats according to claim 2, characterized in that, Both the first anti-hair loss mechanism and the second anti-hair loss mechanism include: A support base with symmetrically arranged limit blocks, the limit blocks and the support base together forming a locking groove, the first steel wire and the second steel wire being locked into the locking groove; An adjusting member is disposed on the base, and the adjusting member is movable relative to the base to move the support seat closer to or away from the contouring platform.

5. A welding fixture for the steel wires on the back of the driver and passenger seats according to claim 4, characterized in that, The adjusting component includes an adjusting block and a mounting block. The adjusting block has a locking hole, and the base has a waist-shaped hole that communicates with the locking hole. The mounting block is vertically connected to the adjusting block, and a connecting hole is provided on the mounting block, through which a fastener can pass and connect to the support base.

6. A welding fixture for the steel wires on the back of the driver and passenger seats of the front seat, as described in claim 1, is characterized in that... The positioning mechanism further includes a first positioning block, a second positioning block, and a receiving block. The receiving block is detachably connected to the first positioning block, and the relative position of the first positioning block to the base can be adjusted. The second positioning block can adjust the height difference between itself and the receiving block in the vertical direction, and an inclined block is installed on the second positioning block. The contouring platform is connected to the inclined block.

7. A welding fixture for the steel wires on the back of the driver and passenger seats of the front seat, as described in claim 4, is characterized in that... The support mechanism includes an adjusting cylinder and a support column. The adjusting cylinder is installed on the bottom wall of the base, and the output shaft of the adjusting cylinder passes through the base and is connected to the support column to support the backrest frame above the base.

8. A welding fixture for the steel wires on the back of the driver and passenger seats of the front seat, as described in claim 7, is characterized in that... The pressing mechanism includes a pressing cylinder and a pressing block. The pressing cylinder is mounted on the base platform, and a flipping block is connected to the output end of the pressing cylinder. The pressing block is detachably connected to the bottom wall of the flipping block and is used to press the backrest frame movably onto the support column.

9. A welding fixture for the steel wires on the back of the driver and passenger seats of the front seat, as described in claim 8, is characterized in that... The flipping block is also provided with several anti-detachment blocks, which are used to flexibly abut against the top opening of the inclined back plate and the locking groove.

10. A welding fixture for the steel wires on the back of the driver and passenger seats of the front seat, as described in claim 1, characterized in that, Several abutting blocks are also provided on the base, and the abutting blocks are movable against the side wall of the backrest frame.

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