Seat back steel wire welding tool

Abstract

The application relates to the technical field of welding tooling, in particular to a seat back steel wire welding tooling which comprises two mounting vertical plates, a cavity is formed between the two mounting vertical plates, a plurality of clamping rods are slidably connected to the mounting vertical plates and the clamping rods are axially consistent; a bearing plate is arranged through the mounting vertical plates and connected with the mounting vertical plates, a sliding gap is left between the clamping rods and the bearing plate, a clamping cavity is formed between the bearing plate and the plurality of clamping rods on the two mounting vertical plates; and a fixing unit is used for fixing the clamping rods. The application has the effects that the steel wire can be conveniently supported through the bearing plate, the clamping cavity with different structural shapes is formed after the clamping rods slide, the steel wire with different structural shapes can be adapted and fixed in position, the position of the clamping rods can be conveniently fixed through the fixing unit, and the possibility of clamping failure caused by the sliding of the clamping rods during the welding process is reduced after the steel wire is clamped by the clamping rods.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of welding tooling, in particular to a seat back steel wire welding tooling. BACKGROUND

[0002] The rear seat of an automobile is generally composed of a seat cushion, a backrest, a headrest and a seat connecting piece, etc. At present, the backrest framework of a general automobile is made of a punched steel plate or an aluminum alloy material. With the improvement of the quality of life, more and more high-grade cars use soft steel wires to make the backrest framework. The automobile steel wire backrest framework can meet the lightness requirement of the automobile backrest and the comfort requirement of people on the automobile backrest.

[0003] Since the steel wire needs to be assembled with other seat structures after welding, the welding position precision requirement is high, and the soft steel wire itself puts forward higher requirements on the fixing clamp used in welding. In the prior art, a seat cushion support-shaped steel wire mesh welding clamp is disclosed, which comprises a welding base plate and slide rail seats. Two rows of first positioning blocks are vertically arranged on the welding base plate between the two end portions of the slide rail seats. Two second positioning blocks are arranged at the left and right ends of each row of the first positioning blocks. A guide rail and an L-shaped slide plate driven by a gas cylinder are arranged on each slide rail seat. Two rows of third positioning blocks are arranged on the longitudinal plate of the slide plate. Fourth positioning blocks are arranged on the welding base plate and the longitudinal plate of the slide plate. The fourth positioning blocks on the welding base plate are arranged close to the positions of the two ends of the front support-shaped steel wire and the middle welding point. The fourth positioning blocks on the longitudinal plate of the slide plate are arranged in the middle of the longitudinal plate of the slide plate. First limiting blocks are arranged outside the fourth positioning blocks.

[0004] According to the related technology in the above, the steel wire is clamped into the embedding groove in the positioning block, and then the steel wire is pressed and fixed by another positioning block. Therefore, the embedding groove needs to be opened according to the shape of the steel wire. For example, when an arc-shaped steel wire is encountered, the shape of the embedding groove is not suitable, so that the fixing clamp can only be applied to the same type of steel wire structure, and the application range is small. SUMMARY

[0005] In order to improve the applicability of the tooling to steel wires with different structural shapes, the application provides a seat back steel wire welding tooling.

[0006] The seat back steel wire welding tooling provided by the application adopts the following technical scheme:

[0007] A seat back steel wire welding tooling comprises

[0008] Two mounting vertical plates are arranged, a cavity is formed between the two mounting vertical plates, a plurality of clamping rods are slidably connected to the mounting vertical plates, and the plurality of clamping rods are axially consistent.

[0009] A receiving plate, the mounting vertical plate is arranged through the receiving plate, and the mounting vertical plate is connected with the receiving plate, a sliding gap is left between the clamping rod and the receiving plate, and a clamping cavity is formed between the receiving plate and the plurality of clamping rods on the two mounting vertical plates;

[0010] A fixing unit, the fixing unit is installed on the mounting vertical plate, and the fixing unit is connected with the clamping rod, and is used for fixing the clamping rod.

[0011] By adopting the technical scheme, the seat back steel wire welding tool is designed, the mounting vertical plate is convenient for providing a mounting position and sliding guide for the clamping rod, the receiving plate is convenient for supporting the steel wire, and the clamping cavity of different structural shapes is formed after the clamping rod slides, the adaptation and position fixing of the steel wire of different structural shapes are realized, the position fixing of the clamping rod is realized through the fixing unit, and then after the steel wire is clamped by the clamping rod, the possibility of clamping failure caused by the sliding of the clamping rod in the welding process is reduced.

[0012] In a specific embodiment, the fixing unit comprises

[0013] A first cylinder, the first cylinder is connected with the mounting vertical plate, and a force plate is connected on the first cylinder piston rod;

[0014] A plurality of traction ropes, one end of the traction rope is connected with the force plate, the other end of the traction rope extends into the inner cavity of the mounting vertical plate and is connected with the clamping rod in sliding mode, and the axial direction of the first cylinder piston rod is consistent with the axial direction of the traction rope.

[0015] By adopting the technical scheme, the fixing unit is designed, the first cylinder is convenient for driving the force plate to move, the force plate is convenient for driving the plurality of traction ropes to move at the same time, the traction rope can abut against the clamping rod and the mounting vertical plate, and then the position fixing of the clamping rod is realized through the friction force.

[0016] In a specific embodiment, a sliding block is connected in sliding mode in the clamping rod, a strip-shaped groove is arranged on the clamping rod, the strip-shaped groove is arranged along the long side direction of the clamping rod, and the traction rope is connected with the sliding block through the strip-shaped groove.

[0017] By adopting the technical scheme, the sliding block is designed, and the clamping rod and the mounting vertical plate can be abutted and fixed through the traction rope.

[0018] In a specific embodiment, the traction rope is arranged as a hard rod.

[0019] By adopting the technical scheme, the traction cable provided with the hard rod can realize the position fixation of the sliding block when realizing the position fixation of the clamping rod, and then realize the position fixation of the clamping rod through the cooperation of the friction force between the sliding block and the clamping rod and the friction force between the clamping rod and the mounting vertical plate.

[0020] In one specific implementation, the fixing unit comprises

[0021] A second cylinder is connected with the receiving plate, and one end of a second cylinder piston rod is connected with a fixing strip;

[0022] A plurality of adapter strips are connected with the fixing strip, the plurality of adapter strips are distributed along the long edge direction of the fixing strip, a strip-shaped accommodation slot for movement of the adapter strip is formed on the mounting vertical plate, both ends of the long edge direction of the adapter strip are connected with an inverted U-shaped rod, the inverted U-shaped rod extends into the inner cavity of the mounting vertical plate, and the clamping rod is arranged through the inner cavity of the inverted U-shaped rod.

[0023] By adopting the technical scheme, the fixing unit is designed, the second cylinder is used to drive the movement of the fixing strip, the fixing strip is used to drive the movement of the plurality of adapter strips, and the adapter strip is used to cooperate with the inverted U-shaped rod to realize the position fixation of the clamping rod.

[0024] In one specific implementation, the inside of the inverted U-shaped rod is connected with a rubber pad, a plurality of embedding holes are formed on the clamping rod, and when the horizontal section of the inverted U-shaped rod moves towards the clamping rod and abuts against the clamping rod, the rubber pad is sunk into the embedding hole.

[0025] By adopting the technical scheme, the rubber pad is designed to cooperate with the embedding hole formed on the clamping rod, the rubber pad is sunk into the embedding hole, and the reliability of the position fixation of the clamping rod is increased.

[0026] In one specific implementation, the fixing unit comprises two electromagnets.

[0027] The electromagnets are embedded in the receiving plate, the two electromagnets are arranged close to the two mounting vertical plates respectively, and the electromagnets can be magnetically attracted and fixed to the clamping rod after being electrified.

[0028] By adopting the technical scheme, the fixing unit is designed, the electromagnets are used to realize the magnetic attraction and fixation of the clamping rod.

[0029] In one specific implementation, the end of the clamping rod away from the steel wire is connected with a driving spring, the driving spring is sleeved on the clamping rod, and the driving spring is connected with the mounting vertical plate.

[0030] By adopting the technical scheme, the driving spring can realize automatic abutment of the clamping rod and the steel wire, avoids manual adjustment of the relative position of the clamping rod and the steel wire by the staff, and can also avoid displacement of the clamping rod due to the action of the fixing unit during the fixing process of the clamping rod, so that the clamping effect on the steel wire is lost.

[0031] In a specific implementable scheme, an arc-shaped groove is arranged on the abutting end of the clamping rod, and an axis of the arc-shaped groove is arranged parallel to the top wall of the receiving plate and parallel to the plane where the mounting vertical plate is located.

[0032] By adopting the technical scheme, the arc-shaped groove can increase the contact area of the clamping rod and the steel wire, and improve the clamping stability of the steel wire.

[0033] In summary, the present application has at least one of the following beneficial technical effects:

[0034] 1. The seat back steel wire welding tool is designed to provide a mounting position and sliding guide for the clamping rod through the mounting vertical plate, support the steel wire through the receiving plate, form a clamping cavity of different structural shapes after the clamping rod slides, realize the adaptation and position fixing of the steel wire of different structural shapes, realize the position fixing of the clamping rod through the fixing unit, and then reduce the possibility of clamping failure caused by the sliding of the clamping rod during the welding process after the steel wire is clamped by the clamping rod.

[0035] 2. The seat back steel wire welding tool is designed to realize the position fixing of the sliding block when the position of the clamping rod is fixed through the traction rope in the form of a hard rod, and then realize the position fixing of the clamping rod through the friction between the sliding block and the clamping rod and the friction between the clamping rod and the mounting vertical plate.

[0036] 3. The seat back steel wire welding tool is designed to realize automatic abutment of the clamping rod and the steel wire through the driving spring, avoid manual adjustment of the relative position of the clamping rod and the steel wire by the staff, and can also avoid displacement of the clamping rod due to the action of the fixing unit during the fixing process of the clamping rod, so that the clamping effect on the steel wire is lost. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is a structural schematic view of the mounting vertical plate, the clamping rod and the receiving plate of the embodiment 1 of the present application.

[0038] Figure 2 is a planar side view structural schematic view of Figure 1 .

[0039] Figure 3 is a planar top view structural schematic view of Figure 1 .

[0040] Figure 4 is Figure 1 schematic diagram of the use state after the driving spring is added.

[0041] Figure 5 is Figure 4 schematic diagram of the structure after the fixing unit is added.

[0042] Figure 6 is Figure 5 cross-sectional view of

[0043] Figure 7 is Figure 6 enlarged schematic diagram of A part of

[0044] Figure 8 is a schematic diagram of the structure of embodiment 2 of the present application.

[0045] Figure 9 is Figure 8 cross-sectional view of

[0046] Figure 10 is Figure 8 partial schematic diagram of another perspective after the cross section.

[0047] Figure 11 is a schematic diagram of the structure of embodiment 3 of the present application.

[0048] Mark explanation: 1, installation stand plate; 2, clamping rod; 21, strip-shaped groove; 22, embedded hole; 23, arc-shaped groove; 3, receiving plate; 4, fixing unit; 41, first air cylinder; 42, force plate; 43, traction cable; 44, second air cylinder; 45, fixing strip; 46, adapter strip; 47, inverted U-shaped rod; 48, electromagnet; 5, sliding block; 6, rubber pad; 7, driving spring. DETAILED DESCRIPTION

[0049] The present application will be further described below in combination with the accompanying Figures 1-11 The present application will be further described below in combination with the accompanying

[0050] The present application discloses a seat back steel wire welding tool.

[0051] Embodiment 1

[0052] Referring to Figure 1 A seat back steel wire welding tool includes a receiving plate 3 and two installation stand plates 1, and a cavity is formed between the two installation stand plates 1. In the present application, the two installation stand plates 1 can be parallel or not parallel. In the present embodiment, the two installation stand plates 1 are parallel, and the lower end of the installation stand plate 1 can be fixed on the base through bolts. The receiving plate 3 is horizontally arranged, the installation stand plate 1 passes through the receiving plate 3, and the installation stand plate 1 and the receiving plate 3 are welded and fixed.

[0053] Referring toFigure 1 In order to facilitate the realization of the clamping adaptability of the steel wires with different structural shapes, a plurality of clamping rods 2 are slidably connected to the mounting stand 1, the plurality of clamping rods 2 are arranged in the same axial direction, and a sliding gap is left between the clamping rod 2 and the receiving plate 3, the receiving plate 3 and the plurality of clamping rods 2 mounted on the two mounting stands 1 form a clamping cavity, and by adjusting the extension distance of the clamping rod 2, a clamping cavity with different shapes can be formed, thereby realizing the clamping adaptability of the steel wires with different structural shapes; in the present application, the cross-sectional shape of the clamping rod 2 can be circular, square or other shapes, and in the present embodiment, the cross-sectional shape of the clamping rod 2 is preferably square.

[0054] With reference to Figure 2 In order to facilitate the increase of the contact area between the clamping rod 2 and the steel wire, thereby reducing the influence on the deformation of the steel wire under the condition of reducing the abutting force, an arc-shaped groove 23 is formed in the abutting end of the clamping rod 2, and the axis of the arc-shaped groove 23 is arranged parallel to the plane of the top wall of the receiving plate 3 and parallel to the inner side of the mounting stand 1.

[0055] With reference to Figure 3 In the present application, the plurality of clamping rods 2 on the two mounting stands 1 can be arranged one by one in alignment or staggered, in order to reduce the influence on the deformation of the steel wire during clamping and fixing, in the present embodiment, the plurality of clamping rods 2 on the two mounting stands 1 are arranged one by one in alignment, in use, the steel wire is placed on the receiving plate 3, and the welded section of the steel wire is attached to the seat frame, and then force is applied to the clamping rod 2, so that the clamping rod 2 abuts against the steel wire.

[0056] With reference to Figure 4 In order to keep the clamping rod 2 in abutting state with the steel wire during operation, a driving spring 7 is welded to the end of the clamping rod 2 away from the steel wire, the driving spring 7 is sleeved on the clamping rod 2, and the driving spring 7 is welded and fixed to the outer side of the mounting stand 1, in use, force is applied to the clamping rod 2, so that a gap for placing the steel wire is left between the plurality of clamping rods 2 mounted on the two mounting stands 1, and then the steel wire is placed on the receiving plate 3, the driving spring 7 applies force to the clamping rod 2 to keep the clamping rod 2 in abutting state with the steel wire.

[0057] With reference to Figure 5 and Figure 6 After the clamping rod 2 abuts against the steel wire, in order to further ensure that the steel wire does not displace during welding, a fixing unit 4 is further included, the fixing unit 4 includes a first air cylinder 41, a force applying plate 42 and a plurality of traction ropes 43, the cylinder body of the first air cylinder 41 is connected and fixed to the two mounting stands 1 through a fixing block, the force applying plate 42 is bolted to the piston rod of the first air cylinder 41, and the force applying plate 42 is vertically arranged.

[0058] With reference to Figure 6, the number of traction ropes 43 and the number of clamping rods 2 on the two mounting vertical plates 1 are consistent, one end of the traction rope 43 is welded and fixed with the force plate 42, the other end extends into the inner cavity of the mounting vertical plate 1 and is in sliding connection with the clamping rod 2, the traction rope 43 is in sliding connection with the mounting vertical plate 1, and the axial direction of the piston rod of the first air cylinder 41 is consistent with the axial direction of the traction rope 43, in order to avoid mutual interference between the plurality of traction ropes 43, the traction rope 43 is arranged obliquely downward.

[0059] Referring to Figure 7 , the sliding block 5 is in sliding connection in the clamping rod 2, and the strip-shaped groove 21 is formed in the clamping rod 2, the strip-shaped groove 21 is formed along the long edge direction of the clamping rod 2, the end of the traction rope 43 away from the force plate 42 passes through the strip-shaped groove 21 and is welded and fixed with the sliding block 5, and the width of the strip-shaped groove 21 is greater than the outer diameter of the traction rope 43 and less than the width of the sliding block 5, so as to avoid the sliding block 5 from being taken out through the strip-shaped groove 21.

[0060] Referring to Figure 6 and Figure 7 , in order to facilitate further realization of the reliability of the position fixation of the clamping rod 2, the traction rope 43 is arranged as a hard rod, so that the sliding block 5 and the mounting vertical plate 1 remain unchanged along the long edge direction of the clamping rod 2, the piston rod of the first air cylinder 41 extends to apply force to the force plate 42, the force plate 42 simultaneously drives the plurality of traction ropes 43 to move, the traction rope 43 applies force to the sliding block 5, so that the sliding block 5 abuts against the clamping rod 2, and the clamping rod 2 abuts against the mounting vertical plate 1, realizing the double abutment of the clamping rod 2, and then completing the position fixation of the clamping rod 2.

[0061] The implementation principle of the seat backrest steel wire welding tool in the embodiment of the application is that: force is applied to the clamping rod 2, so that a gap for placing a steel wire is left between the plurality of clamping rods 2 mounted on the two mounting vertical plates 1, then the steel wire is placed on the receiving plate 3, the driving spring 7 applies force to the clamping rod 2 to make the clamping rod 2 keep the abutment state with the steel wire, the piston rod of the first air cylinder 41 extends to apply force to the force plate 42, the force plate 42 simultaneously drives the plurality of traction ropes 43 to move, the traction rope 43 applies force to the sliding block 5, so that the sliding block 5 abuts against the clamping rod 2, and the clamping rod 2 abuts against the mounting vertical plate 1, realizing the double abutment of the clamping rod 2, and then completing the position fixation of the clamping rod 2.

[0062] Embodiment 2

[0063] Referring to Figure 8 and Figure 9The embodiment is different from embodiment 1 in that the fixing unit 4 comprises a second air cylinder 44, a fixing strip 45 and a transition strip 46, the cylinder body of the second air cylinder 44 is bolted with the bottom wall of the receiving plate 3, and the piston rod of the second air cylinder 44 is arranged vertically to the plane where the bottom wall of the receiving plate 3 is located, the fixing strip 45 is bolted with the piston rod of the second air cylinder 44, and the long edge direction of the fixing strip 45 is arranged in parallel to the plane where the bottom wall of the receiving plate 3 is located; the number of the transition strips 46 is multiple, the multiple transition strips 46 are distributed along the long edge direction of the fixing strip 45, and the transition strips 46 are welded with the fixing strip 45, the transition strips 46 are arranged vertically to the inner side of the mounting vertical plate 1, and the mounting vertical plate 1 is vertically provided with a strip-shaped accommodation slot for the transition strips 46 to pass through.

[0064] With reference to Figure 9 and Figure 10 , the transition strips 46 located in the region of the strip-shaped accommodation slot are welded with inverted U-shaped rods 47, the inverted U-shaped rods 47 extend into the inner cavity of the mounting vertical plate 1, and the inverted U-shaped rods 47 are arranged staggeredly with the mounting vertical plate 1, the clamping rod 2 is arranged through the cavity formed by the inverted U-shaped rods 47 and the transition strips 46, the piston rod of the second air cylinder 44 drives the movement of the fixing strip 45, the fixing strip 45 simultaneously drives the movement of the multiple inverted U-shaped rods 47 through the multiple transition strips 46, so that the horizontal sections of the inverted U-shaped rods 47 are pressed and fixed on the clamping rod 2, and the position of the clamping rod 2 is fixed in cooperation with the mounting vertical plate 1.

[0065] With reference to Figure 10 , in order to further improve the stability of the position fixation of the clamping rod 2, rubber pads 6 are bonded and fixed to the inner sides of the inverted U-shaped rods 47, multiple embedding holes 22 are provided on the clamping rod 2, and when the horizontal sections of the inverted U-shaped rods 47 move downward and abut against the clamping rod 2, the rubber pads 6 sink into the embedding holes 22 under the action of force.

[0066] The implementation principle of the seat backrest steel wire welding tool in the embodiment 2 is that force is applied to the clamping rod 2, so that a gap for placing the steel wire is left between the multiple clamping rods 2 mounted on the two mounting vertical plates 1, then the steel wire is placed on the receiving plate 3, the driving spring 7 applies force to the clamping rod 2 so that the clamping rod 2 keeps in the abutting state with the steel wire, the piston rod of the second air cylinder 44 applies force to the fixing strip 45, the fixing strip 45 drives the inverted U-shaped rods 47 to move downward through the transition strips 46, until the rubber pads 6 on the inverted U-shaped rods 47 abut against the clamping rod 2 and partially sink into the embedding holes 22, and the position fixation of the clamping rod 2 is completed.

[0067] Embodiment 3

[0068] With reference to Figure 11The embodiment is different from the embodiment 2 in that the fixing unit 4 comprises two electromagnets 48 embedded in the receiving plate 3, and the two electromagnets 48 are arranged close to the inner side of the two mounting vertical plates 1 respectively, the top wall of the electromagnet 48 is arranged flush with the top wall of the receiving plate 3, and the electromagnet 48 is magnetically attracted and fixed with the clamping rod 2 after being electrified.

[0069] The implementation principle of the seat backrest steel wire welding tool in the embodiment 3 of the application is that force is applied to the clamping rod 2 to leave a gap for placing the steel wire between the multiple clamping rods 2 mounted on the two mounting vertical plates 1, then the steel wire is placed on the receiving plate 3, the driving spring 7 is driven to apply force to the clamping rod 2 to keep the clamping rod 2 in abutment with the steel wire, then the electromagnet 48 is electrified, the electromagnet 48 is magnetically attracted and fixed with the clamping rod 2, and the position of the clamping rod 2 is fixed.

[0070] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so that: equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A welding fixture for steel wire in a seat backrest, characterized in that: include Two mounting plates (1) are provided, and a cavity is formed between the two mounting plates (1). Multiple clamping rods (2) are slidably connected to the mounting plates (1), and the multiple clamping rods (2) are axially aligned. The receiving plate (3) is provided, the mounting plate (1) passes through the receiving plate (3), and the mounting plate (1) is connected to the receiving plate (3). There is a sliding gap between the clamping rod (2) and the receiving plate (3), and a clamping cavity is formed between the receiving plate (3) and the multiple clamping rods (2) on the two mounting plates (1). A fixing unit (4) is installed on the mounting plate (1) and is connected to the clamping rod (2) for fixing the clamping rod (2); The fixing unit (4) includes The second cylinder (44) is connected to the receiving plate (3), and a fixing strip (45) is connected to one end of the piston rod of the second cylinder (44). Multiple adapter strips (46) are connected to the fixed strip (45). The multiple adapter strips (46) are distributed along the long side of the fixed strip (45). The mounting plate (1) is provided with a strip-shaped clearance groove for the adapter strips (46) to move. Both ends of the long side of the adapter strips (46) are connected to inverted U-shaped rods (47). The inverted U-shaped rods (47) extend into the inner cavity of the mounting plate (1). The clamping rod (2) passes through the inner cavity of the inverted U-shaped rods (47). The inner side of the inverted U-shaped rod (47) is connected to a rubber pad (6), and the clamping rod (2) has multiple embedded holes (22). When the horizontal section of the inverted U-shaped rod (47) moves toward the clamping rod (2) and abuts, the rubber pad (6) sinks into the embedded hole (22).

2. The welding fixture for the steel wire of the seat backrest according to claim 1, characterized in that: The fixing unit (4) includes The first cylinder (41) is connected to the mounting plate (1), and a force-applying plate (42) is connected to the piston rod of the first cylinder (41). Multiple traction cables (43) are provided. One end of each traction cable (43) is connected to the force-applying plate (42), and the other end extends into the inner cavity of the mounting plate (1) and is slidably connected to the clamping rod (2). The axial direction of the piston rod of the first cylinder (41) is consistent with the axial direction of the traction cable (43).

3. The welding fixture for the steel wire of the seat backrest according to claim 2, characterized in that: A sliding block (5) is slidably connected inside the clamping rod (2), and a strip groove (21) is provided on the clamping rod (2). The strip groove (21) is opened along the long side of the clamping rod (2), and the traction cable (43) passes through the strip groove (21) and is connected to the sliding block (5).

4. The welding fixture for the steel wire of the seat backrest according to claim 2, characterized in that: The traction cable (43) is a rigid rod.

5. The welding fixture for the steel wire of the seat backrest according to claim 1, characterized in that: The fixing unit (4) includes two electromagnets (48); The electromagnet (48) is embedded in the receiving plate (3). The two electromagnets (48) are respectively set close to the two mounting plates (1), and the electromagnets (48) can be magnetically fixed with the clamping rod (2) after being energized.

6. The welding fixture for the steel wire of the seat backrest according to claim 1, characterized in that: The clamping rod (2) is connected to a drive spring (7) at the end away from the steel wire. The drive spring (7) is sleeved on the clamping rod (2) and is connected to the mounting plate (1).

7. The welding fixture for the steel wire of the seat backrest according to claim 1, characterized in that: The clamping rod (2) has an arc-shaped groove (23) at its abutting end, and the axis of the arc-shaped groove (23) is parallel to the top wall of the receiving plate (3) and parallel to the plane where the mounting plate (1) is located.

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