Seat back plate welding device

Abstract

The utility model is suitable for the technical field of seat machining devices, and provides a seat back plate welding device which comprises a supporting seat. The transmission assembly and the welding assembly are arranged on the supporting seat; the welding assembly comprises a mounting frame arranged on the supporting seat; the hydraulic air cylinders are symmetrically arranged on the mounting frame, and the telescopic ends of the two hydraulic air cylinders extend to the lower portion of the mounting frame and are connected with the same assembling shell; a lead screw is rotationally matched in the assembling shell, and a sliding block, a welding support arranged at the bottom of the sliding block and a welding head are in threaded fit with the lead screw; through the highly flexible design, the efficient clamping protection mechanism and the environment-friendly and safe operation environment, the welding requirements of seat back plates of different sizes or heights can be easily met, the machining flexibility is greatly improved, the application range is greatly widened, the efficiency and quality of welding operation and the health guarantee of operators are comprehensively improved, and the production cost is reduced. And diversified production requirements are met.

Description

Technical Field

[0001] The utility model belongs to the technical field of seat processing devices, and in particular relates to a seat back plate welding device. Background Art

[0002] The seat back, a crucial component of the seat structure, undoubtedly has a direct and profound impact on its overall performance and service life. However, traditional seat back welding methods mostly rely on manual labor, which is particularly inadequate in today's manufacturing environment, which demands high efficiency and precision.

[0003] Traditional welding methods have significant deficiencies in processing flexibility. Specifically, they cannot effectively fix and clamp special-shaped back panels, making it difficult to ensure welding accuracy. At the same time, the lack of automatic loading and unloading functions reduces production efficiency. In addition, the fumes generated during the welding process will pollute the working environment and affect the health of operators. These problems jointly limit the application scope and effectiveness of traditional welding methods in the processing of complex structural parts such as seat back panels. Utility Model Content

[0004] The utility model provides a seat back plate welding device, which aims to solve the problems that a traditional seat back plate welding method has limitations in processing flexibility, application scope, welding accuracy and working environment.

[0005] The present invention is implemented as follows: a seat back welding device comprises a support seat; a transmission assembly and a welding assembly arranged on the support seat; wherein the welding assembly comprises: a mounting frame arranged on the support seat; a hydraulic cylinder symmetrically arranged on the mounting frame, the telescopic ends of the two hydraulic cylinders extending to the lower position of the mounting frame and connected to the same assembly shell; a screw rod is rotatably engaged in the assembly shell, a slider is threaded on the screw rod, and the slider is slidably engaged with the assembly shell; a welding bracket is arranged at the bottom position of the slider, and a welding head is arranged on the side of the welding bracket away from the slider; a fan is arranged on the side of the support seat adjacent to the mounting frame; one end of the fan is connected to an adsorption hood through a first duct, and the other end of the fan is connected to a second duct, and the second duct extends to the lower position of the support seat.

[0006] Preferably, the welding assembly further comprises: a first motor provided at the end side of the assembly shell; an output end of the first motor is fixedly connected to an end key of the screw rod.

[0007] Preferably, the transmission assembly includes: a group of guide rails symmetrically arranged on the support seat; guide blocks are slidably fitted on both of the guide rails; a working platform is arranged on the two guide blocks; a welding orientation platform is arranged on the working platform, and the welding orientation platform is rotatably fitted with the working platform.

[0008] Preferably, the transmission assembly further comprises: a second motor provided on the bottom side of the working platform; an output end of the second motor is fixedly connected to an end key of the welding orientation platform.

[0009] Preferably, the transmission assembly also includes: positioning blocks arranged at the four corner positions of the upper surface of the welding orienting table; a first electric push rod is provided on the side opposite to the welding orienting table surface of several positioning blocks; a clamping plate provided at the telescopic end of several first electric push rods; and a protective component provided on the outer wall of several clamping plates.

[0010] Preferably, the protection assembly comprises: a return spring arranged on the outer wall of the clamping plate; and a rubber pad is provided on the side of the return spring away from the clamping plate.

[0011] Preferably, a slag receiving groove is provided at the edge of the upper surface of the working platform, and the depth of the slag receiving groove is lower than the horizontal height of the working platform.

[0012] Preferably, a side plate is provided on the side of the support seat away from the mounting frame, a second electric push rod is provided on the outer wall of the side plate, and a telescopic end of the second electric push rod is connected to the outer wall of the working platform.

[0013] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0014] First, the device enables precise adjustment of the height and position of the welding head. This design enables the device to adapt to the welding needs of seat back panels of different sizes or heights, greatly improving the processing flexibility and applicability. At the same time, the sliding work platform combined with the welding orientation table that can freely adjust the angle further enhances the accuracy and operability of the device, ensuring the efficiency and accuracy of welding operations.

[0015] Secondly, the device uses a clamping system consisting of a first electric push rod, a return spring, and a rubber pad to tightly fit and firmly clamp the seat back. This design not only improves the stability and accuracy of the clamping, but also effectively buffers the potential damage to the seat back surface caused by the clamping force through the elasticity of the return spring and the softness of the rubber pad. This efficient clamping and protection mechanism ensures the stability and safety of the seat back during the welding process, while also guaranteeing the intact appearance and quality of the seat back after welding.

[0016] Third: This device can effectively capture and discharge the smoke and exhaust gas generated during the welding process, thereby keeping the working environment clean and safe; in addition, a slag trough is set on the working platform to collect and contain welding slag and metal spatter, avoiding their pollution to the working platform and interference with the surrounding environment; this design not only improves work efficiency, but also keeps the working platform clean and tidy, providing operators with a more comfortable and healthy working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 4 It is a side view of the utility model;

[0021] Figure 5 It is a rear view of the utility model;

[0022] Figure 6 It is a top view of the utility model;

[0023] Figure 7 It is a front view of the utility model;

[0024] In the figure: 1. Support base; 2. Mounting frame; 3. Hydraulic cylinder; 4. Assembly shell; 5. Screw; 6. Slider; 7. Welding bracket; 8. Welding head; 9. Fan; 10. First duct; 11. Adsorption hood; 12. Second duct; 13. First motor; 14. Guide rail; 15. Guide block; 16. Working platform; 17. Welding orientation table; 18. Second motor; 19. Positioning block; 20. First electric push rod; 21. Clamping plate; 22. Return spring; 23. Rubber pad; 24. Slag trough; 25. Side plate; 26. Second electric push rod. DETAILED DESCRIPTION

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0026] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0027] The present invention provides a seat back plate welding device. Figure 1-7 As shown, it includes a support base 1; a transmission assembly and a welding assembly provided on the support base 1; wherein the welding assembly includes: a mounting frame 2 provided on the support base 1; a hydraulic cylinder 3 symmetrically provided on the mounting frame 2, and the telescopic ends of the two hydraulic cylinders 3 extend to the lower position of the mounting frame 2 and are connected to the same assembly shell 4; a screw rod 5 is rotatably engaged in the assembly shell 4, and a slider 6 is threadedly engaged on the screw rod 5, and the slider 6 is slidably engaged with the assembly shell 4; a welding bracket 7 is provided at the bottom position of the slider 6, and a welding head 8 is provided on the side of the welding bracket 7 away from the slider 6; a fan 9 is provided on the side of the support base 1 adjacent to the mounting frame 2; one end of the fan 9 is connected to an adsorption cover 11 through a first conduit 10, and the other end of the fan 9 is connected to a second conduit 12, and the second conduit 12 extends to the lower position of the support base 1.

[0028] It should be noted that, since the traditional seat back welding method has limitations in terms of processing flexibility, scope of application, welding accuracy and working environment, this solution can adapt to the welding needs of seat backs of different sizes or heights through precise adjustment of the height and position of the welding head 8, as well as a slidable working platform 16 and a welding orientation table 17 with free adjustment of the angle, thereby greatly improving the processing flexibility and scope of application, and ensuring the efficiency and accuracy of the welding operation; at the same time, the device adopts a clamping system consisting of a first electric push rod 20, a return spring 22 and a rubber pad 23, which can tightly fit and firmly clamp the seat back. , effectively buffering the potential damage to the surface of the seat backboard caused by the clamping force, ensuring the stability and safety of the seat backboard during the welding process; this efficient clamping and protection mechanism not only improves the reliability of welding, but also ensures the intact appearance and quality of the seat backboard after welding; in addition, the device can effectively capture and discharge the smoke and exhaust gas generated during the welding process, and at the same time, a slag trough 24 is provided to collect and contain welding slag and metal spatter, avoiding their pollution to the working platform 16 and interference with the surrounding environment; this design not only keeps the working environment clean and safe, but also provides a more comfortable and healthy working environment for operators.

[0029] Specifically, in this embodiment, this solution mainly includes a support base 1; a mounting frame 2 is fixed on the support base 1, and two hydraulic cylinders 3 are installed on it; the telescopic ends of the two hydraulic cylinders 3 are commonly connected to an assembly shell 4, and the height and position of the assembly shell 4 and its internal mechanism can be adjusted through the telescopic movement of the hydraulic cylinder 3 to adapt to the welding requirements of seat backs of different sizes or heights; a screw rod 5 is rotatably fitted inside the assembly shell 4, and a slider 6 is threadedly fitted on the screw rod 5; when the screw rod 5 rotates, the slider 6 slides in the assembly shell 4 along the length direction of the screw rod 5, and this sliding fit allows the slider 6 to perform precise linear movement; a welding bracket 7 is provided at the bottom position of the slider 6, and a welding head 8 is provided on one side of the welding bracket 7; through the movement of the slider 6 on the screw rod 5, the welding head 8 can be driven to accurately reach the predetermined welding position on the seat back;

[0030] During the welding process, in order to remove the smoke and harmful gases generated by welding, a fan 9 is provided on the side of the support base 1 adjacent to the mounting frame 2; the fan 9 is connected to the adsorption hood 11 through a first conduit 10, and the adsorption hood 11 can capture the smoke and exhaust gas generated during the welding process; the other end of the fan 9 discharges the captured smoke and exhaust gas to the lower position of the support base 1 through a second conduit 12, and the second conduit 12 can be connected to external pipes to discharge the exhaust gas to the outside to keep the working environment clean and safe.

[0031] In a further preferred embodiment of the present invention, Figure 3 As shown, the welding assembly further includes: a first motor 13 provided at the end side of the assembly shell 4 ; the output end of the first motor 13 is fixedly connected to the end key of the screw rod 5 .

[0032] In this embodiment, when the lead screw 5 rotates under the drive of the first motor 13 , the slider 6 will perform precise linear sliding in the assembly housing 4 along the length direction of the lead screw 5 , thereby adjusting the processing position of the welding head 8 .

[0033] In a further preferred embodiment of the present invention, Figure 1-5 As shown, the transmission assembly includes: a group of guide rails 14 symmetrically arranged on the support seat 1; guide blocks 15 are slidably fitted on the two guide rails 14; a working platform 16 is provided on the two guide blocks 15; a welding orientation platform 17 is provided on the working platform 16, and the welding orientation platform 17 is rotatably fitted with the working platform 16.

[0034] In this embodiment, the guide blocks 15 are designed to slide freely on the guide rails. This design allows the structure connected to the guide blocks 15 to move accordingly. A work platform 16 is fixed to the two guide blocks 15. The work platform 16 is used to carry and support the welding orientation table 17. When the guide blocks 15 slide on the guide rails 14, the position of the work platform 16 and its welding orientation table 17 can be precisely adjusted to meet the specific needs of the welding operation.

[0035] In addition, a welding orientation table 17 is rotatably arranged on the work platform 16; this rotational cooperation mechanism allows the welding orientation table 17 to rotate a certain angle on the work platform 16; by rotating the welding orientation table 17, the direction and angle of the seat back panel can be easily adjusted so that it accurately matches the position of the welding head 8.

[0036] In a further preferred embodiment of the present invention, Figure 5 As shown, the transmission assembly further includes: a second motor 18 disposed on the bottom side of the working platform 16 ; an output end of the second motor 18 is fixedly connected to an end key of the welding orientation platform 17 .

[0037] In this embodiment, the second motor 18 is used to drive the welding orientation table 17 to rotate. This design allows the position and angle of the welding orientation table 17 to be flexibly adjusted according to different processing requirements during the seat back processing process, thereby ensuring that the seat back can be accurately welded at different processing positions.

[0038] In a further preferred embodiment of the present invention, Figure 1-3 As shown, the transmission assembly also includes: positioning blocks 19 arranged at the four corner positions of the upper surface of the welding orienting table 17; a first electric push rod 20 is provided on the side opposite to the welding orienting table 17 of several positioning blocks 19; a clamping plate 21 is provided at the telescopic end of several first electric push rods 20; and a protective component is provided on the outer wall of several clamping plates 21.

[0039] In this embodiment, when the seat back needs to be welded, the position of the working platform 16 is precisely adjusted by the guide rail 14 and the guide block 15, and then the welding orientation table 17 is rotated according to the welding requirements to make the seat back at the optimal welding angle; then, the first electric push rod 20 is started to push the clamping plate 21 closer to the seat back. The clamping plate 21 is used to tightly fit and fix the seat back to prevent it from moving or deforming during the welding process.

[0040] In a further preferred embodiment of the present invention, Figure 1 As shown, the protection assembly includes: a return spring 22 arranged on the outer wall of the clamping plate 21; and a rubber pad 23 is provided on the side of the return spring 22 away from the clamping plate 21.

[0041] In this embodiment, during the clamping process, the first electric push rod 20 pushes the clamping plate 21 toward the seat back, and the return spring 22 begins to compress and absorb the thrust. When the clamping plate 21 contacts the seat back, the rubber pad 23 begins to play a role, increasing the friction and protecting the surface of the seat back. As the first electric push rod 20 continues to push, the clamping plate 21 gradually clamps the seat back firmly in a predetermined position. In this process, the return spring 22 can absorb and disperse these forces, thereby reducing the direct impact on the seat back. At the same time, the return spring 22 The elasticity also ensures that the clamping plate 21 can fit tightly and adapt to the surface shape of the seat back during the clamping process, thereby improving the stability and accuracy of the clamping. The rubber pad 23 can not only increase the friction between the clamping plate 21 and the seat back, preventing the seat back from sliding or shifting during the welding process, but also protect the surface of the seat back. When the clamping plate 21 fits tightly to the seat back, the softness of the rubber pad 23 can buffer the potential damage of the clamping force to the surface of the seat back, ensuring that the seat back still maintains its intact appearance and quality after welding.

[0042] In a further preferred embodiment of the present invention, Figure 2 As shown, a slag receiving groove 24 is provided at the edge of the upper surface of the working platform 16 , and the depth of the slag receiving groove 24 is lower than the horizontal height of the working platform 16 .

[0043] In this embodiment, when the welding operation is carried out, welding slag and metal splashes will inevitably be generated. However, due to the presence of the slag trough 24, these impurities are effectively collected and contained in the trough, avoiding their pollution of the working platform 16 and interference with the surrounding environment; in addition, once the welding operation is completed, the operator can easily clean the impurities in the slag trough 24 without the need for tedious cleaning of the entire working platform 16, which not only improves work efficiency, but also keeps the working platform 16 clean and tidy.

[0044] In a further preferred embodiment of the present invention, Figure 2 As shown, a side plate 25 is provided on the side of the support base 1 away from the mounting frame 2 , and a second electric push rod 26 is provided on the outer wall of the side plate 25 , and the telescopic end of the second electric push rod 26 is connected to the outer wall of the working platform 16 .

[0045] In this embodiment, the second electric push rod 26 is specially designed to drive the work platform 16 to slide along the guide rail 14. This design not only improves the accuracy and stability of the movement of the work platform 16, but also significantly enhances the convenience of loading, so that the seat back panel can be quickly and accurately positioned in the welding area, thereby greatly improving the efficiency of the entire welding process.

[0046] Working principle: A mounting frame 2 is fixed on the support base 1 of the device; two hydraulic cylinders 3 are installed on the mounting frame 2, and the telescopic ends of the two cylinders are connected to an assembly shell 4; through the telescopic movement of the hydraulic cylinder 3, the height and position of the assembly shell 4 and its internal mechanism can be accurately adjusted to meet the welding requirements of seat backs of different sizes or heights; a screw rod 5 is rotated inside the assembly shell 4, and a slider 6 is threaded on the screw rod 5; the first motor 13 is arranged on the end side of the assembly shell 4, and when the first motor 13 drives the screw rod 5 to rotate, the slider 6 will make precise linear sliding in the assembly shell 4 along the length direction of the screw rod 5; a welding bracket 7 is provided at the bottom position of the slider 6, and a welding head 8 is installed on one side of the welding bracket 7; through the movement of the slider 6 on the screw rod 5, the welding head 8 can be accurately driven to the predetermined welding position on the seat back;

[0047] The work platform 16 is fixed to two guide blocks 15, which are designed to slide freely on the guide rails 14. This design allows the work platform 16 connected to the guide blocks 15 to move accordingly. When the guide blocks 15 slide on the guide rails 14 under the drive of the second electric push rod 26, the position of the work platform 16 and the welding orientation table 17 on it can be precisely adjusted to meet the specific needs of the welding operation.

[0048] A welding orientation table 17 is rotatably mounted on the work platform 16. A second motor 18 is used to drive the welding orientation table 17 to rotate. This design allows the position and angle of the welding orientation table 17 to be flexibly adjusted during the seat back panel processing process according to different processing requirements. By rotating the welding orientation table 17, the direction and angle of the seat back panel can be easily adjusted to accurately match the position of the welding head 8, thereby ensuring the accuracy and quality of the welding.

[0049] In order to clamp the seat back panel, positioning blocks 19 are provided at the four corners of the upper surface of the working platform 16, and a first electric push rod 20 is installed on the side of the positioning block 19 opposite to the surface of the welding orientation table 17; the telescopic end of the first electric push rod 20 is connected to the clamping plate 21, which is designed to tightly fit and fix the seat back panel; during the clamping process, the first electric push rod 20 pushes the clamping plate 21 closer to the seat back panel, and the return spring 22 begins to compress and absorb the thrust, while the rubber pad 23 begins to play a role, increasing friction and protecting the surface of the seat back panel; as the first electric push rod 20 continues to push, the clamping plate 21 gradually clamps the seat back panel firmly in the predetermined position; in this process, the elasticity of the return spring 22 ensures that the clamping plate 21 can tightly fit and adapt to the surface shape of the seat back panel, thereby improving the stability and accuracy of the clamping; and the softness of the rubber pad 23 can buffer the potential damage to the surface of the seat back panel caused by the clamping force, thereby ensuring that the seat back panel still maintains its intact appearance and quality after welding;

[0050] During the welding process, in order to remove the smoke and harmful gases generated by welding, a fan 9 is provided on the side of the support base 1 adjacent to the mounting frame 2. The fan 9 is connected to an adsorption hood 11 through a first conduit 10. The adsorption hood 11 can capture the smoke and exhaust gas generated during the welding process. The other end of the fan 9 discharges the captured smoke and exhaust gas to the lower part of the support base 1 through a second conduit 12. The second conduit 12 can be connected to an external pipe to discharge the exhaust gas to the outside to maintain a clean and safe working environment.

[0051] In addition, a slag collecting groove 24 is provided at the edge of the upper surface of the working platform 16, the depth of which is lower than the horizontal height of the working platform 16; when the welding operation is in progress, the welding slag and metal splashes will be effectively collected and contained in the slag collecting groove 24, avoiding their pollution of the working platform 16 and interference with the surrounding environment; once the welding operation is completed, the operator can easily clean the impurities in the slag collecting groove 24 without the need for tedious cleaning of the entire working platform 16; this not only improves work efficiency, but also keeps the working platform 16 clean and tidy.

[0052] It should be noted that for the aforementioned embodiments, for simplicity of description, they are all expressed as a series of action combinations. However, those skilled in the art should be aware that the present invention is not limited by the order of the actions described, because according to the present invention, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in this specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

[0053] In the several embodiments provided in this application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely illustrative, such as the division of the above-mentioned units. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the coupling or communication connection between each other shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunications or other forms.

[0054] The units described above as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope to be protected by the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making any creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also fall within the scope to be protected by the present invention.

Claims

1. A seat back welding device, characterized in that: include: Support seat (1); A transmission assembly and a welding assembly provided on the support seat (1); Wherein, the welding assembly comprises: A mounting frame (2) provided on the support base (1); Hydraulic cylinders (3) are symmetrically arranged on the mounting frame (2), and the telescopic ends of the two hydraulic cylinders (3) extend to the lower position of the mounting frame (2) and are connected to the same assembly shell (4); A screw rod (5) is rotatably engaged in the assembly shell (4), a slider (6) is threadedly engaged on the screw rod (5), and the slider (6) is slidably engaged with the assembly shell (4); A welding bracket (7) is provided at the bottom of the slider (6), and a welding head (8) is provided at a side of the welding bracket (7) away from the slider (6); A fan (9) is provided on one side of the support base (1) adjacent to the mounting frame (2); One end of the fan (9) is connected to an adsorption hood (11) via a first conduit (10), and the other end of the fan (9) is connected to a second conduit (12), which extends to the lower position of the support seat (1).

2. A seat back plate welding device as claimed in claim 1, characterized in that: The welding assembly further comprises: a first motor (13) disposed on an end side of the assembly housing (4); The output end of the first motor (13) is fixedly connected to the end key of the screw rod (5).

3. A seat back plate welding device as claimed in claim 1, characterized in that: The transmission assembly includes: A set of guide rails (14) symmetrically arranged on the support seat (1); The two guide rails (14) are both slidably fitted with guide blocks (15); a working platform (16) provided on the two guide blocks (15); A welding orientation platform (17) is provided on the working platform (16), and the welding orientation platform (17) is rotatably matched with the working platform (16).

4. A seat back plate welding device as claimed in claim 3, characterized in that: The transmission assembly further includes: a second motor (18) disposed on the bottom side of the working platform (16); The output end of the second motor (18) is fixedly connected to the end key of the welding orientation platform (17).

5. A seat back plate welding device as claimed in claim 4, characterized in that: The transmission assembly further includes: Positioning blocks (19) are arranged at four corner positions on the upper surface of the welding orientation platform (17); A first electric push rod (20) is provided on each side of the positioning blocks (19) opposite to the welding orientation table (17); A clamping plate (21) provided at the telescopic ends of the plurality of first electric push rods (20); A protective component is provided on the outer walls of the plurality of clamping plates (21).

6. A seat back plate welding device as claimed in claim 5, characterized in that: The protection component includes: a return spring (22) disposed on the outer wall of the clamping plate (21); A rubber pad (23) is provided on the side of the return spring (22) away from the clamping plate (21).

7. A seat back plate welding device as claimed in claim 4, characterized in that: A slag receiving groove (24) is provided at the edge of the upper surface of the working platform (16), and the depth of the slag receiving groove (24) is lower than the horizontal height of the working platform (16).

8. A seat back plate welding device as claimed in claim 3, characterized in that: A side plate (25) is provided on the side of the support seat (1) away from the mounting frame (2), and a second electric push rod (26) is provided on the outer wall of the side plate (25), and the telescopic end of the second electric push rod (26) is connected to the outer wall of the working platform (16).

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