A welding device for automobile seat production

Abstract

The present application relates to the technical field of automobile seat production equipment, and particularly relates to a welding device for automobile seat production, which comprises a welding console and an automobile seat framework, the automobile seat framework is placed at the middle part of the top end of the welding console, the two ends of the top end of the welding console are respectively slidably connected with horizontal translation tables, the outer sides of the horizontal translation tables are provided with horizontal clamping limiting mechanisms for accurately positioning the two sides of the automobile seat framework, the top parts of the two horizontal translation tables and the ends far from the centers are fixed with mechanical arm sliding rails, the top end of each mechanical arm sliding rail is slidably connected with a mechanical base, and the upper part of the mechanical base is assembled with a welding head for welding the automobile seat framework; the three-dimensional positioning system of "horizontal, back and leg support" is adopted to solve the limitation of the single two-side pressing of the existing device, and the three-point clamping of the back positioning mechanism is adopted when welding the backrest connecting part, so that the back positioning is accurate.

Description

Technical Field

[0001] This invention relates to the field of automotive seat production equipment technology, and in particular to a welding device for automotive seat production. Background Technology

[0002] As a key structural component of the vehicle's safety system, the welding quality of automotive seats directly affects occupant protection performance and overall vehicle durability. With the automotive industry's shift towards lightweighting and intelligentization, the application of hybrid structures using high-strength steel, hot-formed steel, and aluminum alloys in seat frames is continuously increasing, placing higher demands on welding processes and equipment. Currently, welding is one of the core processes in automotive seat production. The seat frame is one of the core components of a car seat. Its basic structure is mainly sheet metal or tubular frame. Sheet metal seat frame assemblies are mainly produced by stamping and then assembled; tubular frame seat frame assemblies are mostly bent, stamped (flattened), drilled and then assembled by robot or manual welding.

[0003] When using the above technology, the following technical problems were found in the existing technology: First, the clamping and positioning accuracy is insufficient. The existing device only uses single pressure clamping on both sides, which cannot specifically fix the front leg support (which is structurally weak and easy to shift) and the backrest connection (which requires high welding accuracy) of the seat frame. Furthermore, it cannot accurately fix the key bottom welding node formed by the front leg support and the backrest connection frame, resulting in uneven stress on the frame, a significant decrease in welding accuracy and stability, and easy occurrence of deformation, cracking and other problems, which affect the product qualification rate. Secondly, welding processes generate a large amount of harmful fumes. Some existing equipment does not have effective fume purification mechanisms, and the fumes are directly emitted into the working environment, endangering the health of operators and failing to meet the requirements of green production. Therefore, we have designed a welding device for automobile seat production to provide an alternative technical solution to the above-mentioned technical problems. Summary of the Invention

[0004] The purpose of this invention is to provide a welding apparatus for automobile seat production, so as to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A welding apparatus for automobile seat production includes a welding console and an automobile seat frame. The automobile seat frame is placed at the top and center of the welding console. Lateral translation stages are slidably connected to both ends of the top of the welding console. Lateral clamping and limiting mechanisms for precisely positioning the sides of the automobile seat frame are provided on the outer sides of the lateral translation stages. A robotic arm slide rail is fixed to the top of each of the two lateral translation stages, away from the center. A mechanical base is slidably connected to the top of the robotic arm slide rail. A welding head for welding the automobile seat frame is mounted above the mechanical base. The lateral clamping and limiting mechanism includes a resisting component, lateral resisting blocks, and lateral electric push rods. Several lateral resisting blocks are fixed to the top of each of the two lateral translation stages near the center. The lateral resisting blocks are used to resist the sides of the automobile seat frame. Lateral electric push rods are mounted at both ends of the top of the welding console, directly below the lateral translation stages. The output ends of the lateral electric push rods are fixedly connected to the bottom ends of the lateral translation stages.

[0006] The two transverse translation stages are equipped with a restraint assembly near their center ends for clamping the sides of the car seat frame. The restraint assembly includes a restraint electric push rod, a restraint connecting block, and a restraint clamping claw. The two sides of the transverse translation stages near their center ends are respectively fixed with restraint connecting blocks. The top of the restraint connecting blocks is rotatably connected to the restraint clamping claw. The restraint clamping claw and the two transverse restraint blocks restrain and limit the sides of the car seat frame. The two transverse restraint blocks are located at the middle of the top of the transverse translation stages. The bottom of the restraint connecting blocks is rotatably connected to the restraint electric push rod. The output end of the restraint electric push rod is rotatably connected to the bottom end of the restraint clamping claw. The bottom end of the restraint clamping claw near the transverse translation stage is rotatably connected to the restraint connecting block. The bottom end of the restraint clamping claw away from the transverse translation stage is rotatably connected to the output end of the restraint electric push rod.

[0007] The welding console has a longitudinal guide rail fixed to one side of its top and the back of the car seat frame. A longitudinal translation stage is slidably connected above the longitudinal guide rail. The top of the longitudinal translation stage is equipped with a back positioning mechanism for accurately positioning the back of the car seat frame. The back positioning mechanism includes a back arc-shaped resisting block, a back clamping push rod, an extension connecting block, a Z-shaped clamping claw, a back resisting block, and a support column. Support columns are fixed at both ends of the top of the longitudinal translation stage. A back arc-shaped resisting block is fixed at the top of the two support columns and at the end furthest from the center. One side of the back arc-shaped resisting block contacts and resists the back of the car seat frame. A longitudinal electric push rod is mounted on one side of the top of the welding console and directly below the longitudinal translation stage. The output end of the longitudinal electric push rod is fixed to the longitudinal translation stage. An anti-slip pad A is fixed on the side of the back resisting block and the back arc resisting block near the back of the car seat frame. An A buffer pad is fixed on the side of the bottom end of the Z-shaped clamping claw that contacts the car seat frame.

[0008] Among them, an extension connecting block is fixed at the top of the two support columns and at the end near the center. A back restraint block is fixed at the bottom of the extension connecting block near the side of the car seat frame. A back clamping push rod is assembled at the top of the extension connecting block away from the car seat frame. A Z-shaped clamping claw is rotatably connected at the top of the extension connecting block near the side of the car seat frame. The output end of the back clamping push rod is rotatably connected to the top of the Z-shaped clamping claw. The bottom end of the Z-shaped clamping claw is in back restraint contact with the back of the car seat frame.

[0009] The welding console has a leg support positioning mechanism on one side of its top, which is used to precisely position the front leg support of the car seat frame. The leg support positioning mechanism includes a front leg support clamping claw, a front leg support electric push rod, a T-shaped mounting base, a support plate, a support seat, a resisting claw, and a leg support auxiliary limiting mechanism. A T-shaped mounting base is fixed on the other side of the welding console. A support plate is fixed on the inner side of the T-shaped mounting base. A B-clamping connecting hinge is rotatably connected to one end of the support plate away from the car seat frame. The front leg support clamping claw is rotatably connected to the top of the B-clamping connecting hinge. A front leg support electric push rod is rotatably connected to one end of the support plate. The output end of the front leg support electric push rod is rotatably connected to the top of the front leg support clamping claw, and the connection point between the output end of the front leg support electric push rod and the front leg support clamping claw is located at the end of the front leg support clamping claw away from the car seat frame.

[0010] The T-shaped mounting base and support plate are fixed with a support base at one end near the car seat frame. The top of the support base is fixed with a resisting claw. The top of the resisting claw contacts the front leg support of the car seat frame. The end of the front clamping claw of the leg support away from the front electric push rod of the leg support contacts the front leg support of the car seat frame. The top of the resisting claw is fixed with a B anti-slip pad. The bottom end of the front clamping claw of the leg support in contact with the car seat frame is fixed with a B buffer pad.

[0011] The welding console has a leg support auxiliary limiting mechanism located on the other side of its top and inside the car seat frame. The leg support auxiliary limiting mechanism includes an inner electric push rod for the leg support, an L-shaped support block, an L-shaped bearing, a leg support auxiliary claw, a claw block, an A-type auxiliary connecting hinge, and a seat leg support rod. An L-shaped support block is fixed to the other side of the welding console, and a seat leg support rod is fixed to the top of the L-shaped support block. The top of the seat leg support rod contacts the bottom of the leg support part of the car seat frame, and the seat leg support rod is used to support the leg support part of the car seat frame.

[0012] The L-shaped support block has an L-shaped bearing fixed to one end away from the front clamping claw of the leg support, and the bottom end of the L-shaped bearing is fixedly connected to the welding control console. An auxiliary connecting hinge A is rotatably connected to the top end of the L-shaped bearing and the end located on the front clamping claw of the leg support. An auxiliary leg support claw is rotatably connected to the top end of the auxiliary leg support claw and elastically fixed to one end of the auxiliary leg support claw and above the seat leg support rod. The bottom end of the claw block contacts and resists the top end of the leg support part of the car seat frame. An inner electric push rod of the leg support is rotatably connected to the other end of the L-shaped bearing, and the output end of the inner electric push rod of the leg support claw is rotatably connected to the end of the auxiliary leg support claw away from the claw block.

[0013] The mechanical base and the welding head are provided with a six-axis adjustable robotic arm for multi-directional welding adjustment of the welding head. The six-axis adjustable robotic arm includes an electric adjusting arm, a guide cover and a welding head. Electric sliding rods are respectively installed on both sides of the inner slide rail of the robotic arm. The outer side of the electric sliding rod is electrically slidably connected to the mechanical base. The top of the mechanical base is electrically adjustable with an electric adjusting arm. The outer side of the electric adjusting arm is electrically adjustable with a welding mechanical claw. One end of the welding mechanical claw is equipped with a welding head and a suction nozzle.

[0014] The welding console has a fume adsorption mechanism for filtering fumes on one side of its bottom. This mechanism includes an adsorption nozzle, a guide hood, an adsorption pump, a delivery pipe, a filter box, and activated filter plates. The filter box is fixed to the other side of the welding console, and several activated filter plates are slidably connected to its inner side. An adsorption pump is mounted on one side of the filter box, and a delivery pipe is fixed to the output end of the pump. The end of the delivery pipe furthest from the pump is slidably connected to the top of the filter box. An adsorption pipe is fixed to the input end of the pump, and the two ends of the adsorption pipe furthest from the pump pass through the welding console and are fixedly connected to the adsorption nozzle. A guide hood is fixed to the top of the welding claw, and this guide hood is used to block and attract the fumes generated during welding.

[0015] It is clear without a doubt that the technical solution described above in this application can solve the technical problem that this application aims to address.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention addresses the limitation of existing devices that apply pressure only from both sides through a three-dimensional positioning system of "lateral, back and leg support". When welding the backrest connection part, a three-point clamping mechanism is used to ensure accurate back positioning. When welding the front leg support, the leg support positioning mechanism and the auxiliary limiting mechanism work together to achieve multi-directional and bi-directional clamping, while fixing the key bottom welding node formed by the front leg support and the backrest connection frame, avoiding uneven stress on the frame and effectively reducing welding deformation of the seat frame.

[0017] By setting up a complete fume adsorption mechanism, the entire process of blocking by the guide hood, adsorption by the adsorption nozzle, and filtration by the activated filter plate is used to efficiently purify the harmful fumes generated during welding, avoiding direct emission of fumes and protecting the health of operators while meeting green production standards. The adsorption mechanism moves synchronously with the welding head, ensuring thorough purification without dead angles. The filter plate can be easily replaced, resulting in low maintenance costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure between the robotic arm slide rail and the lateral clamping and limiting mechanism of the present invention; Figure 3 This is a schematic diagram of the structure between the back positioning mechanism and the leg support positioning mechanism of the present invention; Figure 4 This is a schematic diagram of the structure between the car seat frame of the present invention and the back clamping push rod and the leg support positioning mechanism respectively; Figure 5 This is a schematic diagram showing the structure between the welding console of the present invention and the transverse clamping and limiting mechanism and the leg bracket positioning mechanism respectively; Figure 6 This is a schematic diagram of the structure between the transverse translation stage and the longitudinal translation stage of the present invention; Figure 7 This is a schematic diagram of the structure between the L-shaped support block and the leg bracket positioning mechanism of the present invention; Figure 8 This is a schematic diagram of the structure between the resisting connecting block and the resisting clamping claw of the present invention; Figure 9 This is a schematic diagram of the structure between the L-shaped shaft seat and the T-shaped mounting seat of the present invention; Figure 10 This is a schematic diagram of the structure between the longitudinal translation stage and the extension connecting block of the present invention; Figure 11 This is a schematic diagram of the structure between the filter box and the activated filter plate of the present invention; Figure 12 This is a schematic diagram of the structure between the mechanical base and the welding mechanical claw of the present invention.

[0020] In the diagram: 1. Welding control console; 2. Lateral clamping and limiting mechanism; 3. Car seat frame; 4. Backrest positioning mechanism; 5. Leg support positioning mechanism; 6. Smoke absorption mechanism; 7. Leg support auxiliary limiting mechanism; 8. Six-axis adjustable robotic arm; 9. Lateral resisting block; 10. Lateral translation stage; 11. Longitudinal guide rail; 12. Backrest arc-shaped resisting block; 13. Backrest clamping push rod; 14. Extension connecting block; 15. Z-shaped clamping claw; 16. Leg support front clamping claw; 17. Leg support front electric push rod; 18. T-shaped mounting base; 19. L-shaped support block; 20. L-shaped bearing seat; 21. Backrest resisting block; 22. Support column; 23. Electric slide rod; 24. Resisting block. 25. Electric push rod; 26. Resistance connecting block; 27. Resistance clamping claw; 28. Conveyor pipe; 29. ​​Seat leg support rod; 30. Support base; 31. Resistance claw; 32. Welding mechanical claw; 33. Leg support auxiliary claw; 34. Claw block; 35. Longitudinal electric push rod; 36. Mechanical arm slide rail; 37. Mechanical base; 38. Electric adjusting arm; 39. Guide cover; 40. Lateral electric push rod; 41. Filter box; 42. Filter plate; 43. Adsorption pump body; 44. Welding head; 45. Adsorption nozzle; 46. Adsorption pipe; 47. Longitudinal translation stage; 48. A. Auxiliary connecting hinge; 49. B. Clamping connecting hinge; 50. Leg support inner side electric push rod. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] Example 1: Please refer to Figure 1-7This invention provides a technical solution: a welding device for automobile seat production, comprising a welding console 1 and an automobile seat frame 3. The automobile seat frame 3 is placed at the top and middle of the welding console 1. Lateral translation stages 10 are slidably connected to both ends of the top of the welding console 1. Lateral clamping and limiting mechanisms 2 for precisely positioning both sides of the automobile seat frame 3 are provided on the outer side of the lateral translation stages 10. A robotic arm slide rail 36 is fixed to the top of the two lateral translation stages 10, away from the center. A mechanical base 37 is slidably connected to the top of the robotic arm slide rail 36. A welding head 44 for welding the car seat frame 3 is mounted on the top of the mechanical base 37. The lateral clamping and limiting mechanism 2 includes a resisting component, a lateral resisting block 9 and a lateral electric push rod 40. Several lateral resisting blocks 9 are fixed at the top of the two lateral translation stages 10 near the center. The lateral resisting blocks 9 are used to resist the sides of the car seat frame 3. The two ends of the top of the welding control console 1 and directly below the lateral translation stage 10 are equipped with lateral electric push rods 40. The output end of the lateral electric push rod 40 is fixedly connected to the bottom end of the lateral translation stage 10. By using the welding console 1 as the installation and support base for the entire device, the car seat frame 3 is placed in the middle of the top of the welding console 1 to ensure that the welding reference is centered. The horizontal electric push rod 40 is energized and extends and retracts, driving the horizontal translation stage 10, which is fixedly connected to its output end, to slide horizontally along the top of the welding console 1. This causes the horizontal resistance block 9 on the horizontal translation stage 10 to move synchronously, forming horizontal resistance and limitation on both sides of the car seat frame 3. The robotic arm slide rail 36 is fixed to the top of the horizontal translation stage 10, and the mechanical base 37 slides along the robotic arm slide rail 36, causing the welding head 44 above it to adjust the welding position, and cooperates with the horizontal clamping and limiting mechanism 2 to complete the welding operation. Beneficial effects: First, the transverse electric push rod 40 drives the transverse translation stage 10 to achieve precise translation. The spacing can be flexibly adjusted according to the width of different specifications of car seat frames 3, which has strong adaptability and greatly improves versatility compared with the existing fixed clamping structure.

[0023] Two transverse translation stages 10 are provided with a restraining assembly for clamping the two sides of the car seat frame 3 near the center end. The restraining assembly includes a restraining electric push rod 24, a restraining connecting block 25, and a restraining clamping claw 26. The two transverse translation stages 10 are respectively fixed with the restraining connecting block 25 on both sides near the center end. The top of the restraining connecting block 25 is rotatably connected to the restraining clamping claw 26. The restraining clamping claw 26 and two of the transverse restraining blocks 9 restrain and limit the two sides of the car seat frame 3. The two transverse restraining blocks 9 are located in the middle of the top of the transverse translation stage 10. The bottom of the restraining connecting block 25 is rotatably connected to the restraining electric push rod 24. The output end of the restraining electric push rod 24 is rotatably connected to the bottom end of the restraining clamping claw 26. The bottom end of the restraining claw 26 near the transverse translation stage 10 is rotatably connected to the restraining connecting block 25. The bottom end of the restraining claw 26 away from the transverse translation stage 10 is rotatably connected to the output end of the restraining electric push rod 24. The resisting component is fixed to the end of the transverse translation stage 10 near the car seat frame 3 via the resisting connecting block 25. The two ends of the resisting electric push rod 24 are rotatably connected to the bottom end of the resisting connecting block 25 and the bottom end of the resisting clamping claw 26 away from the transverse translation stage 10, respectively. The bottom end of the resisting clamping claw 26 near the transverse translation stage 10 is rotatably connected to the top end of the resisting connecting block 25, forming a lever structure. When the resisting electric push rod 24 extends or retracts, it drives the resisting clamping claw 26 to rotate around the resisting connecting block 25 as the fulcrum. It cooperates with the two transverse resisting blocks 9 located in the middle of the transverse translation stage 10 to form a double limit of "clamping and resisting" from both sides of the car seat frame 3, so as to achieve precise clamping. Beneficial effects: First, the resisting component adopts a lever structure of "resisting electric push rod 24, resisting connecting block 25 and resisting clamping claw 26". Compared with the existing single pressure clamping, the clamping force is more uniform and controllable, avoiding deformation of the car seat frame 3 caused by excessive clamping, and preventing welding displacement caused by insufficient clamping force.

[0024] A longitudinal guide rail 11 is fixed to one side of the top of the welding console 1 and to the back of the car seat frame 3. A longitudinal translation stage 47 is slidably connected above the longitudinal guide rail 11. A back positioning mechanism 4 for accurately positioning the back of the car seat frame 3 is provided at the top of the longitudinal translation stage 47. The back positioning mechanism 4 includes a back arc-shaped resisting block 12, a back clamping push rod 13, an extension connecting block 14, a Z-shaped clamping claw 15, a back resisting block 21, and a support column 22. Support columns 22 are fixed at both ends of the top of the longitudinal translation stage 47. A back arc-shaped resisting block 12 is fixed at the top of the two support columns 22 and at the end away from the center. One side of the back arc-shaped resisting block 12 contacts and resists the back of the car seat frame 3. The longitudinal guide rail 11 is fixed to the top of the welding console 1 on one side near the back of the car seat frame 3. The longitudinal translation table 47 slides along the longitudinal guide rail 11, driving the back positioning mechanism 4 at the top to adjust its position longitudinally to adapt to different positioning requirements of the back of the car seat frame 3. The support column 22 is fixed at both ends of the top of the longitudinal translation stage 47 to provide support for the back arc-shaped resisting block 12. The back arc-shaped resisting block 12 adopts an arc structure, fits the arc contour of the back of the car seat frame 3, contacts the back of the frame and forms a resisting limit, and initially fixes the back position. Beneficial effects: First, the longitudinal guide rail 11 cooperates with the longitudinal translation stage 47 to achieve precise longitudinal movement of the back positioning mechanism 4, which can be flexibly adjusted according to the back position of different specifications of car seat frame 3, solving the problem that the back positioning of the existing device is fixed and cannot be adapted to multiple specifications of frames. Secondly, the back positioning mechanism 4 is specifically designed for the back of the car seat frame 3 (the part with high welding precision requirements), which makes up for the shortcomings of the existing device that only focuses on clamping on both sides and ignores the precise positioning of the back, providing precise positioning for the back welding nodes and improving welding precision.

[0025] A longitudinal electric push rod 35 is mounted on one side of the top of the welding console 1 and directly below the longitudinal translation stage 47. The output end of the longitudinal electric push rod 35 is fixed to the longitudinal translation stage 47. A non-slip pad A is fixed on the side of the back resisting block 21 and the back arc resisting block 12 near the back of the car seat frame 3. A buffer pad A is fixed on the side of the bottom end of the Z-shaped clamping claw 15 that contacts the car seat frame 3. The longitudinal electric push rod 35 is mounted on the top of the welding console 1, and its output end is fixed to the longitudinal translation stage 47. When energized and extended, it drives the longitudinal translation stage 47 to move precisely along the longitudinal guide rail 11, thereby achieving precise adjustment of the longitudinal position of the back positioning mechanism 4. The anti-slip pads A on the back resisting block 21 and the back arc resisting block 12 increase the friction with the back of the car seat frame 3 and prevent the back of the frame from sliding during welding. The buffer pad A at the bottom of the Z-shaped clamping claw 15 plays a buffering role during clamping and avoids damage to the frame surface caused by rigid contact. Beneficial effects: First, by increasing the friction between the back resisting block 21, the back arc resisting block 12 and the back of the car seat frame 3 through the A anti-slip pad, the displacement of the frame back caused by vibration during the welding process is effectively prevented, further improving the stability of the back positioning and solving the problem of easy slippage of the back positioning in the existing device. Secondly, the A-type buffer pad enables flexible contact during the clamping process, avoiding rigid collisions between the Z-type clamping claw 15 and the car seat frame 3, protecting the frame surface from scratches and pressure damage, while also buffering vibrations during the welding process and reducing the impact of vibrations on welding accuracy.

[0026] An extension connecting block 14 is fixed to the top of the two support columns 22 and to the end near the center. A back resisting block 21 is fixed to the bottom of the extension connecting block 14 on the side near the car seat frame 3. A back clamping push rod 13 is fitted to the top of the extension connecting block 14 and to the side away from the car seat frame 3. A Z-shaped clamping claw 15 is rotatably connected to the top of the extension connecting block 14 and to the side near the car seat frame 3. The output end of the back clamping push rod 13 is rotatably connected to the top of the Z-shaped clamping claw 15. The bottom end of the Z-shaped clamping claw 15 is in contact with the back resisting contact of the car seat frame 3. The extension connecting block 14 is fixed to the top of the two support columns 22 on one side near the car seat frame 3, and the back resisting block 21 is fixed to the bottom of the extension connecting block 14, and forms an auxiliary resisting contact with the back of the car seat frame 3. The back clamping push rod 13 is mounted on the side of the extension connecting block 14 away from the frame. The output end is rotatably connected to the top of the Z-shaped clamping claw 15. The bottom end of the Z-shaped clamping claw 15 is rotatably connected to the extension connecting block 14 to form a lever structure. When the back clamping push rod 13 extends and retracts, it drives the Z-shaped clamping claw 15 to rotate around the extension connecting block 14. Its bottom end cooperates with the back resisting block 21 to form a "pressing down and resisting up" clamping limit on the back of the car seat frame 3. Beneficial effects: First, the Z-shaped gripper 15 adopts a Z-shaped structure, which can bypass the protruding parts of the back of the car seat frame 3 and accurately grip the key welding nodes on the back, solving the problem that existing grippers cannot adapt to the complex back structure. Secondly, the back clamping push rod 13 drives the Z-shaped clamping claw 15 to form a lever clamping, and the clamping force is precise and controllable. In conjunction with the back resisting block 21, it achieves a double limit of "upper pressure and lower resistance", which completely fixes the back of the car seat frame 3, avoids back displacement during welding, and specifically solves the problem of high welding precision requirements for the back.

[0027] Example 2: Refer to Figures 8-10A welding device for automobile seat production includes a leg support positioning mechanism 5 on one side of the top of a welding console 1 for precisely positioning the front leg support of an automobile seat frame 3. The leg support positioning mechanism 5 includes a leg support front clamping claw 16, a leg support front electric push rod 17, a T-shaped mounting base 18, a support plate 29, a support seat 30, a resisting claw 31, and a leg support auxiliary limiting mechanism 7. A T-shaped mounting base 18 is fixed to the other side of the top of the welding console 1, and a support plate 29 is fixed to the inner side of the T-shaped mounting base 18. One end of the plate 29 and away from the car seat frame 3 is rotatably connected to a B clamping hinge 49. The top end of the B clamping hinge 49 is rotatably connected to a leg support front clamping claw 16. One end of the support plate 29 is rotatably connected to a leg support front electric push rod 17. The output end of the leg support front electric push rod 17 is rotatably connected to the top end of the leg support front clamping claw 16, and the connection between the output end of the leg support front electric push rod 17 and the leg support front clamping claw 16 is located at the end of the leg support front clamping claw 16 away from the car seat frame 3. The T-shaped mounting base 18 is fixed to the other side of the top of the welding console 1, providing an installation base for the leg support positioning mechanism 5. The support plate 29 is fixed to the inside of the T-shaped mounting base 18, serving as a support and connection. The B clamping connecting hinge 49 is rotatably connected to the end of the support plate 29 away from the car seat frame 3. The front clamping claw 16 of the leg support is rotatably connected to the top of the B clamping connecting hinge 49. The two ends of the front electric push rod 17 of the leg support are rotatably connected to the support plate 29 and the top of the front clamping claw 16 of the leg support away from the frame, respectively, forming a lever structure. When the front electric push rod 17 of the leg support extends or retracts, it drives the front clamping claw 16 of the leg support to rotate around the B clamping connecting hinge 49, moving closer to the front leg support of the car seat frame 3 and forming a clamp. The leg support positioning mechanism 5 is specifically designed for the weak and easily displaced parts of the front leg support structure of the car seat frame 3, which makes up for the defect of the existing device that does not specifically fix the leg support. The T-shaped mounting base 18 and the support plate 29 cooperate to provide stable support for the front clamping claw 16 of the leg support and the front electric push rod 17 of the leg support, so as to avoid structural shaking during clamping and improve the stability of the leg support positioning.

[0028] The T-shaped mounting base 18 and the support plate 29 are fixed with a support base 30 at one end near the car seat frame 3. The top of the support base 30 is fixed with a resisting claw 31. The top of the resisting claw 31 contacts the front leg support part of the car seat frame 3. The end of the front clamping claw 16 of the leg support away from the front electric push rod 17 of the leg support contacts the front leg support part of the car seat frame 3. The top of the resisting claw 31 is fixed with a B anti-slip pad. The bottom end of the front clamping claw 16 of the leg support in contact with the car seat frame 3 is fixed with a B buffer pad. The support base 30 is fixed to the T-shaped mounting base 18 and the support plate 29 near one end of the car seat frame 3. The resisting claw 31 is fixed to the top of the support base 30 and contacts the bottom of the front leg support of the car seat frame 3 to form bottom resistance. The end of the front clamping claw 16 of the leg support away from the front electric push rod 17 of the leg support contacts the top of the leg support and cooperates with the resisting claw 31 to form a "top pressing and bottom resisting" clamping limit. The anti-slip pad B at the tip of the resisting claw 31 increases the friction with the leg support and prevents the leg support from sliding; the buffer pad B at the bottom of the front clamping claw 16 of the leg support achieves flexible clamping and avoids rigid contact that could damage the leg support. Beneficial effects: Firstly, the B anti-slip pad increases the friction between the resisting claw 31 and the leg bracket, effectively preventing displacement of the leg bracket due to vibration during welding, further improving the stability of the leg bracket positioning. Secondly, the B buffer pad achieves flexible contact in the leg bracket clamping, avoiding pressure damage and scratches caused by the front clamping claw 16 to the structurally weak leg bracket. At the same time, it buffers welding vibration, reducing the impact of vibration on the welding accuracy of the leg bracket. On the other side of the top of the welding console 1 and on the front of the inner side of the car seat frame 3, a leg support auxiliary limiting mechanism 7 is provided. The leg support auxiliary limiting mechanism 7 includes an inner electric push rod 50 of the leg support, an L-shaped support block 19, an L-shaped bearing 20, a leg support auxiliary claw 33, a claw block 34, an A auxiliary connecting hinge 48, and a seat leg support rod 28. An L-shaped support block 19 is fixed on the other side of the top of the welding console 1. The top of the L-shaped support block 19 is fixed with the seat leg support rod 28. The top of the seat leg support rod 28 contacts the bottom of the leg support part of the car seat frame 3. The seat leg support rod 28 is used to support the leg support part of the car seat frame 3. The L-shaped support block 19 is fixed to the other side of the top of the welding console 1 and the inner front side of the car seat frame 3, providing an installation base for the leg support auxiliary limiting mechanism 7; the seat leg support rod 28 is fixed to the top of the L-shaped support block 19 and contacts the bottom end of the leg support of the car seat frame 3, providing bottom support for the leg support; the L-shaped bearing 20 is fixed to the end of the L-shaped support block 19 away from the front clamping claw 16 of the leg support; the A auxiliary connecting hinge 48 is rotatably connected to the top of the L-shaped bearing 20; the leg support auxiliary claw 33 is rotatably connected to the top of the A auxiliary connecting hinge 48, providing a structural basis for subsequent auxiliary clamping. Beneficial effects: First, the leg support auxiliary limiting mechanism 7, as an auxiliary structure of the leg support positioning mechanism 5, limits the leg support from the inside of the car seat frame 3, forming a dual positioning of "outer clamping and inner assistance", which further improves the stability of the leg support positioning and solves the problem of leg support displacement caused by the existing device only clamping from the outside and not limiting the inside.

[0029] An L-shaped bearing 20 is fixed to one end of the L-shaped support block 19 away from the front clamping claw 16 of the leg support frame, and the bottom end of the L-shaped bearing 20 is fixedly connected to the welding control console 1. An Auxiliary connecting hinge 48 is rotatably connected to the top end of the L-shaped bearing 20 and the end located on the front clamping claw 16 of the leg support frame. An auxiliary leg support claw 33 is rotatably connected to the top end of the Auxiliary connecting hinge 48. A claw block 34 is elastically fixed to one end of the auxiliary leg support claw 33 and above the seat leg support rod 28. The bottom end of the claw block 34 contacts and resists the top end of the leg support part of the car seat frame 3. An inner electric push rod 50 of the leg support is rotatably connected to the other end of the L-shaped bearing block 20. The output end of the inner electric push rod 50 of the leg support is rotatably connected to the end of the auxiliary leg support claw 33 away from the claw block 34. The L-shaped bearing 20 is simultaneously fixed to the L-shaped support block 19 and the welding control console 1 to improve structural stability; the A auxiliary connecting hinge 48 is rotatably connected to the top of the L-shaped bearing 20, the leg support auxiliary claw 33 is rotatably connected to the top of the A auxiliary connecting hinge 48, and the two ends of the electric push rod 50 on the inner side of the leg support are respectively rotatably connected to the other end of the L-shaped bearing 20 and the end of the leg support auxiliary claw 33 away from the claw block 34 to form a lever structure; When the electric push rod 50 on the inner side of the leg support extends or retracts, it drives the auxiliary claw 33 of the leg support to rotate around the auxiliary connecting hinge 48 A, which in turn drives the claw block 34 to approach the top of the leg support frame of the car seat frame 3, and cooperates with the seat leg support rod 28 to form an auxiliary limit of "upper pressure and lower support". The claw block 34 is elastically fixed to achieve flexible resistance.

[0030] Example 3: Refer to Figure 11 and 12 A welding device for automobile seat production includes a six-axis adjustable robotic arm 8 for multi-directional adjustment welding of the welding head 44, which is provided between the mechanical base 37 and the welding head 44. The six-axis adjustable robotic arm 8 includes an electric adjustable arm 38, a guide cover 39 and a welding head 44. Electric slide rods 23 are respectively installed on both sides inside the robotic arm slide rail 36. The outer side of the electric slide rods 23 is electrically slidably connected to the mechanical base 37. The top of the mechanical base 37 is electrically adjustable with an electric adjustable arm 38. The outer side of the electric adjustable arm 38 is electrically adjustable with a welding mechanical claw 32. One end of the welding mechanical claw 32 is equipped with a welding head 44 and a suction nozzle 45. The mechanical base 37 is driven to slide precisely along the mechanical arm slide rail 36 by the electric slide rod 23 inside the mechanical arm slide rail 36. The electric adjustment arm 38 at the top of the mechanical base 37 can realize multi-directional electric adjustment. The welding mechanical claw 32 slides along the electric adjustment arm 38, driving the welding head 44 and suction nozzle 45 at one end to adjust their positions. The six-axis adjustment structure realizes all-round precise welding of the welding head 44. By setting up a six-axis adjustable robotic arm 8, the welding head 44 can be precisely adjusted in multiple directions. It can be adapted to various welding nodes of the car seat frame 3, including the sides, back, leg support, and key connection nodes. This solves the problem that the existing welding head is inflexible in adjustment and cannot cover all welding nodes, thereby improving welding efficiency and accuracy.

[0031] On the other side of the bottom of the welding control console 1, there is a fume adsorption mechanism 6 for fume filtration. The fume adsorption mechanism 6 includes an adsorption nozzle 45, a guide cover 39, an adsorption pump body 43, a delivery pipe 27, a filter box 41, and an active filter plate 42. The filter box 41 is fixed on the other side of the bottom of the welding control console 1. Several active filter plates 42 are slidably connected to the inner side of the filter box 41. The adsorption pump body 43 is mounted on one side of the filter box 41. The delivery pipe 27 is fixed at the output end of the adsorption pump body 43. The end of the delivery pipe 27 away from the adsorption pump body 43 is slidably connected to the top of the inner side of the filter box 41. The adsorption pipe 46 is fixed at the input end of the adsorption pump body 43. The two ends of the adsorption pipe 46 away from the adsorption pump body 43 pass through the welding control console 1 and are fixedly connected to the adsorption nozzle 45. The top of the welding mechanical claw 32 is fixed with a guide cover 39. The guide cover 39 is used to block and attract the fume generated by the welding head 44. When welding fumes are generated by welding head 44, guide cover 39 blocks the spread of fumes and guides them to adsorption nozzle 45. Adsorption pump body 43 starts and draws fumes from adsorption nozzle 45 through adsorption pipe 46. It is then transported to filter box 41 through conveying pipe 27. The fumes are filtered by activated filter plate 42 in filter box 41 to remove harmful components before being discharged. Activated filter plate 42 can be slidably removed for easy replacement. The adsorption pump body 43, delivery pipe 27, filter box 41 and activated filter plate 42 work together to effectively filter welding fumes, remove harmful components and protect the health of operators.

[0032] The process of using the welding device for automobile seat production provided by this invention is as follows: First, the positioning system works in conjunction with the other side: the horizontal clamping and limiting mechanism 2 (including the horizontal electric push rod 40, the horizontal translation stage 10, the horizontal resistance block 9, and the resistance assembly) performs bidirectional clamping and positioning on both sides of the frame. The back positioning mechanism 4 (including longitudinal electric push rod 35, longitudinal translation stage 47, back arc-shaped resistance block 12, Z-shaped clamping claw 15, etc.) performs three-point precise positioning of the backrest connection part of the frame. The leg support positioning mechanism 5 and the leg support auxiliary limiting mechanism 7 (including the leg support front clamping claw 16, the resisting claw 31, the seat leg support rod 28, the leg support auxiliary claw 33, the leg support inner electric push rod 50, etc.) work together to perform multi-dimensional clamping and positioning of the front leg support of the frame, ensuring the overall frame and key welding nodes, so as to accurately stress the nodes (bottom connection node and back connection node). Secondly, the welding system operates with precision: the robotic arm slide rail 36 and electric slide bar 23 drive the mechanical base 37 to move, and together with the six-axis adjustable robotic arm 8 (including electric adjustable arm 38 and welding mechanical claw 32), the welding head 44 is adjusted in multiple directions to meet the welding needs of various parts of the frame and achieve precise welding. Finally, the fume purification system works simultaneously: the adsorption pump 43 drives the adsorption nozzle 45 to move synchronously with the welding head 44, and works with the guide cover 39 to adsorb welding fumes, which are then sent into the filter box 41 through the delivery pipe 27 and filtered and purified by the activated filter plate 42 to achieve green welding processing.

[0033] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

Claims

1. A welding apparatus for automobile seat production, comprising a welding control console (1) and an automobile seat frame (3), characterized in that, A car seat frame (3) is placed in the middle of the top of the welding console (1). A transverse translation stage (10) is slidably connected to both ends of the top of the welding console (1). A transverse clamping and limiting mechanism (2) for positioning both sides of the car seat frame (3) is provided on the outer side of the transverse translation stage (10). A robotic arm slide rail (36) is fixed to the top of the two transverse translation stages (10) and at the end furthest from the center. A mechanical base (37) is slidably connected to the top of the robotic arm slide rail (36). A useful... The welding head (44) for welding the car seat frame (3) includes a transverse clamping and limiting mechanism (2) comprising a resisting component, a transverse resisting block (9) and a transverse electric push rod (40). Several transverse resisting blocks (9) are fixed at the top of the two transverse translation stages (10). The transverse resisting blocks (9) are used to resist the sides of the car seat frame (3). The two ends of the top of the welding control console (1) are equipped with transverse electric push rods (40). The output end of the transverse electric push rod (40) is fixedly connected to the bottom end of the transverse translation stage (10).

2. The welding apparatus for automobile seat production according to claim 1, characterized in that, Two transverse translation stages (10) are provided with a clamping assembly near the center end for clamping the two sides of the car seat frame (3). The clamping assembly includes a clamping electric push rod (24), a clamping connecting block (25), and a clamping gripper (26). The two transverse translation stages (10) are respectively fixed with clamping connecting blocks (25) on both sides near the center end. The top of the clamping connecting block (25) is rotatably connected to the clamping gripper (26). The clamping gripper (26) and two of the transverse clamping blocks (9) clamp the two sides of the car seat frame (3). The two transverse resisting blocks (9) are located at the middle of the top of the transverse translation stage (10). The bottom end of the resisting connecting block (25) is rotatably connected to the resisting electric push rod (24). The output end of the resisting electric push rod (24) is rotatably connected to the bottom end of the resisting clamping claw (26). The bottom end of the resisting clamping claw (26) near the transverse translation stage (10) is rotatably connected to the resisting connecting block (25). The bottom end of the resisting clamping claw (26) away from the transverse translation stage (10) is rotatably connected to the output end of the resisting electric push rod (24).

3. The welding apparatus for automobile seat production according to claim 2, characterized in that, A longitudinal guide rail (11) is fixed on one side of the top of the welding console (1) and on the back of the car seat frame (3). A longitudinal translation stage (47) is slidably connected above the longitudinal guide rail (11). A back positioning mechanism (4) for positioning the back of the car seat frame (3) is provided at the top of the longitudinal translation stage (47). The back positioning mechanism (4) includes a back arc-shaped resisting block (12), a back clamping push rod (13), an extension connecting block (14), a Z-shaped clamping claw (15), a back resisting block (21), and a support column (22). Support columns (22) are fixed at both ends of the top of the longitudinal translation stage (47). A back arc-shaped resisting block (12) is fixed at the top of the two support columns (22) and at the end away from the center. One side of the back arc-shaped resisting block (12) contacts and resists the back of the car seat frame (3). A longitudinal electric push rod (35) is mounted on one side of the top of the welding console (1) and directly below the longitudinal translation stage (47). The output end of the longitudinal electric push rod (35) is fixed to the longitudinal translation stage (47). An anti-slip pad A is fixed on the side of the back resisting block (21) and the back arc resisting block (12) near the back of the car seat frame (3). An A buffer pad is fixed on the side of the bottom end of the Z-shaped clamping claw (15) that contacts the car seat frame (3).

4. The welding apparatus for automobile seat production according to claim 3, characterized in that, An extension connecting block (14) is fixed to the top of the two support columns (22) and at the end near the center. A back resisting block (21) is fixed to the bottom end of the extension connecting block (14) on the side near the car seat frame (3). A back clamping push rod (13) is fitted to the top of the extension connecting block (14) and on the side away from the car seat frame (3). A Z-shaped clamping claw (15) is rotatably connected to the top of the extension connecting block (14) and on the side near the car seat frame (3). The output end of the back clamping push rod (13) is rotatably connected to the top of the Z-shaped clamping claw (15). The bottom end of the Z-shaped clamping claw (15) is in back resisting contact with the car seat frame (3).

5. The welding apparatus for automobile seat production according to claim 4, characterized in that, On the other side of the top of the welding console (1), a leg support positioning mechanism (5) is provided for positioning the front leg support of the car seat frame (3). The leg support positioning mechanism (5) includes a leg support front clamping claw (16), a leg support front electric push rod (17), a T-shaped mounting base (18), a support plate (29), a support seat (30), a resisting claw (31), and a leg support auxiliary limiting mechanism (7). A T-shaped mounting base (18) is fixed on the other side of the top of the welding console (1). A support plate (29) is fixed on the inner side of the T-shaped mounting base (18). One end of the support plate (29) is rotatably connected to a B clamping hinge (49) in a direction away from the car seat frame (3). The top end of the B clamping hinge (49) is rotatably connected to a leg support front clamping claw (16). One end of the support plate (29) is rotatably connected to a leg support front electric push rod (17). The output end of the leg support front electric push rod (17) is rotatably connected to the top end of the leg support front clamping claw (16), and the connection between the output end of the leg support front electric push rod (17) and the leg support front clamping claw (16) is located at the end of the leg support front clamping claw (16) away from the car seat frame (3).

6. The welding apparatus for automobile seat production according to claim 5, characterized in that, The T-shaped mounting base (18) and the support plate (29) are fixed with a support base (30) at one end near the car seat frame (3). The top of the support base (30) is fixed with a resisting claw (31). The top of the resisting claw (31) contacts the front leg support of the car seat frame (3). The end of the front clamping claw (16) of the leg support away from the front electric push rod (17) of the leg support contacts the front leg support of the car seat frame (3). The top of the resisting claw (31) is fixed with a B anti-slip pad. The bottom end of the front clamping claw (16) of the leg support in contact with the car seat frame (3) is fixed with a B buffer pad.

7. The welding apparatus for automobile seat production according to claim 6, characterized in that, A leg support auxiliary limiting mechanism (7) is provided on the other side of the top of the welding console (1) and on the front of the inner side of the car seat frame (3). The leg support auxiliary limiting mechanism (7) includes an electric push rod (50) on the inner side of the leg support, an L-shaped support block (19), an L-shaped bearing (20), a leg support auxiliary claw (33), a claw block (34), an A auxiliary connecting hinge (48), and a seat leg support rod (28). An L-shaped support block (19) is fixed on the other side of the top of the welding console (1). A seat leg support rod (28) is fixed on the top of the L-shaped support block (19). The top of the seat leg support rod (28) contacts the bottom of the leg support part of the car seat frame (3). The seat leg support rod (28) is used to support the leg support part of the car seat frame (3).

8. The welding apparatus for automobile seat production according to claim 7, characterized in that, The L-shaped support block (19) is fixed with an L-shaped bearing (20) at one end away from the front clamping claw (16) of the leg support, and the bottom end of the L-shaped bearing (20) is fixedly connected to the welding control console (1). The top end of the L-shaped bearing (20) and the end located on the front clamping claw (16) of the leg support are rotatably connected to an A auxiliary connecting hinge (48). The top end of the A auxiliary connecting hinge (48) is rotatably connected to a leg support auxiliary claw (33). One end of the leg support auxiliary claw (33) and the top of the seat leg support rod (28) are elastically fixed with a claw block (34). The bottom end of the claw block (34) contacts and resists the top end of the leg support part of the car seat frame (3). The other end of the L-shaped bearing (20) is rotatably connected to an inner electric push rod (50) of the leg support. The output end of the inner electric push rod (50) of the leg support is rotatably connected to the end of the leg support auxiliary claw (33) away from the claw block (34).

9. A welding apparatus for automobile seat production according to claim 2, characterized in that, A six-axis adjustable robotic arm (8) for multi-directional adjustment welding of the welding head (44) is provided between the mechanical base (37) and the welding head (44). The six-axis adjustable robotic arm (8) includes an electric adjustable arm (38), a guide cover (39) and a welding head (44). Electric slide rods (23) are respectively installed on both sides inside the robotic arm slide rail (36). The outer side of the electric slide rod (23) is electrically slidably connected to the mechanical base (37). The top of the mechanical base (37) is electrically adjustable with an electric adjustable arm (38). The outer side of the electric adjustable arm (38) is electrically adjustable with a welding mechanical claw (32). One end of the welding mechanical claw (32) is equipped with a welding head (44) and a suction nozzle (45).

10. A welding apparatus for automobile seat production according to claim 9, characterized in that, On the other side of the bottom end of the welding console (1), a fume adsorption mechanism (6) for fume filtration is provided. The fume adsorption mechanism (6) includes an adsorption nozzle (45), a guide cover (39), an adsorption pump body (43), a delivery pipe (27), a filter box (41), and an activated filter plate (42). The filter box (41) is fixed on the other side of the bottom end of the welding console (1). Several activated filter plates (42) are slidably connected to the inner side of the filter box (41). An adsorption pump body (43) is assembled on one side of the filter box (41). The output end of the body (43) is fixed with a delivery pipe (27). The end of the delivery pipe (27) away from the adsorption pump body (43) is slidably connected to the top of the inner side of the filter box (41). The input end of the adsorption pump body (43) is fixed with an adsorption pipe (46). The two ends of the adsorption pipe (46) away from the adsorption pump body (43) pass through the welding control console (1) and are fixedly connected to the adsorption nozzle (45). The top of the welding mechanical claw (32) is fixed with a guide cover (39). The guide cover (39) is used to block and attract the smoke generated by the welding head (44).

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