Welding equipment and welding method for automobile body in white

Abstract

The invention relates to the technical field of welding and discloses welding equipment and a welding method.The welding equipment comprises an assembling base and a welding mechanical arm, the welding mechanical arm is fixedly connected to the outer wall of the assembling base, and a mounting frame is mounted at the end, away from the assembling base, of the welding mechanical arm; the multi-specification welding slag removing assembly is used for removing residual welding spots adhered to the surfaces of the welding heads of different specifications; a driving motor in the multi-specification welding slag removing assembly drives a rotating shaft to rotate, so that the positions and the angles of a welding seat and a welding head can be accurately adjusted, and therefore the multi-specification welding slag removing device adapts to different welding requirements and welding slag removing scenes; the movable block, the movable box and the cleaning soft brush can be accurately controlled to conduct accurate position adjustment, so that the cleaning soft brush can better adapt to welding heads of different specifications and shapes, and it is ensured that welding slag is comprehensively and effectively removed.

Description

Technical Field

[0001] The invention relates to the technical field of welding, and in particular to welding equipment and a welding method for automobile body-in-white. Background Art

[0002] The main welding station of the automobile body-in-white welding production line is an important part of the welding production line. The body welding is mainly resistance welding, such as spot welding, which assembles two or more welded workpieces into a lap joint, places them between two electrodes, presses them tightly and energizes them, and uses resistance heat to melt the parent material to form a molten core. It has the characteristics of large current, short time, small workpiece deformation and stress, simple operation, high production efficiency, and easy to realize automated production. Welding is the most widely used process method in automobile production. At present, 80%-90% of welding production in body production is completed by spot welding;

[0003] When welding parts of the body-in-white (BIW) using welding equipment in the prior art, due to the presence of oxide layers, oil stains, rust or other impurities on the surface of the welding material of the body-in-white, these substances will partially fall off and form debris due to the high temperature and pressure during the welding process. In addition, due to the high temperature and pressure during welding, these debris are easily adhered to the surface of the welding head which is also in a high temperature state. At the same time, there will be impurities such as dust and metal particles in the welding working environment. These impurities will float in the welding area during the welding process to form weld debris and adhere to the surface of the welding head. The presence of debris changes the actual contact area and shape between the welding head and the welding material, which will cause uneven distribution of current in the welding area, thereby affecting the heat generation and fusion effect of the weld. Some areas will be over-melted due to the high current density, while other areas may not be welded firmly due to insufficient current, resulting in uneven welding quality and defective products, which will increase costs. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a welding device for automobile body-in-white.

[0005] The invention also provides a welding method applied to the welding equipment.

[0006] To achieve the above object, the technical solution adopted by the present invention is: a welding device for automobile body-in-white, comprising an assembly seat and a welding mechanical arm, wherein the welding mechanical arm is fixedly connected to the outer wall of the assembly seat, and a mounting frame is installed at one end of the welding mechanical arm away from the assembly seat, and further comprising:

[0007] Multiple specifications of welding slag removal components are used to remove residual welding spots on the surface of welding heads of different specifications;

[0008] The filter smoke extraction component is used to absorb and filter the smoke and dust during welding.

[0009] As a further improvement of the above scheme, the upper surface of the assembly seat is symmetrically fixedly connected with electric gas rods, the top ends of the two electric gas rods are fixedly connected with strong suction cups, and one side of the strong suction cups is connected to an external suction device.

[0010] As a further improvement of the above scheme, the multi-specification welding slag removal assembly includes a driving motor fixedly connected to the inside of the mounting frame, the output shaft of the driving motor is fixedly connected to a rotating shaft, the bottom end of the rotating shaft is fixedly connected to a welding seat, the bottom end of the welding seat is equipped with a welding head, the outer wall of the welding seat is rotatably connected to a swivel, the bottom of the mounting frame is symmetrically fixedly connected to a fixed rod, the inside of the swivel is symmetrically slidably connected to a moving rod, the top of the moving rod is fixedly connected to a baffle, the baffle is slidably connected to the inside of the fixed rod, the bottom end of the moving rod is fixedly connected to a fixed box, the outer wall of the moving rod is sleeved with a compression spring 1, and the two ends of the compression spring 1 are respectively fixedly connected to the swivel and the fixed box.

[0011] As a further improvement of the above-mentioned scheme, the multi-specification welding slag removal assembly also includes adjusting screws that are rotatably connected to the inside of a fixed box, the inside of the fixed box is fixedly connected to a limiting rod, the outer wall of the fixed box is threadedly connected to a moving block, the end of the adjusting screw away from the welding head is fixedly connected to an adjusting handle, the moving blocks are slidably connected to the outer wall of the limiting rod, the bottom of the moving block is fixedly connected to a moving box, and the inner side of the moving box is fixedly connected to a cleaning soft brush.

[0012] As a further improvement of the above scheme, the filtered smoking assembly includes a filter box fixedly connected to the outer wall of the mounting frame, the upper surface of the filter box is fixedly connected to a smoke exhaust pipe, the interior of the filter box is fixedly connected to an activated carbon adsorption net, a suction fan is installed at the bottom of the filter box, the suction fans are respectively fixedly connected to the mobile box with a smoke extraction pipe, the cleaning soft brush and the interior of the mobile box are both provided with smoking holes arranged in a linear array, the bottom of the mobile box is fixedly connected to an exhaust pipe, the bottom end of the exhaust pipe is fixedly connected to a limit stop box, and the inner side of the limit stop box is provided with smoking mesh holes arranged in a linear array.

[0013] As a further improvement of the above scheme, the filtered smoke extraction assembly also includes a rotating rod and a reciprocating screw respectively rotatably connected to the inside of the filter box, the outer wall of the reciprocating screw is slidably connected to a slider, the motor output shaft of the suction fan is fixedly connected to a connecting shaft, the outer wall of the connecting shaft is fixedly connected to a worm, the outer wall of the rotating rod is fixedly connected to a worm wheel, the worm and the worm wheel are meshed with each other, the upper surface of the slider is symmetrically fixedly connected to a mounting rod, the interior of the mounting rod is fixedly connected to two compression springs, the top of the two compression springs is fixedly connected to a slide plate, the upper surface of the slide plate is fixedly connected to a movable rod, the top of the movable rod is fixedly connected to a cleaning scraper, the top of the cleaning scraper abuts against the bottom of the activated carbon adsorption net, and the lower surface of the activated carbon adsorption net is symmetrically fixedly connected to bumps.

[0014] As a further improvement of the above solution, a fixing opening is provided at the bottom of the fixing box, and the moving blocks are slidably connected inside the fixing opening.

[0015] As a further improvement of the above solution, the soft cleaning brushes are all arc-shaped, and the limit stop boxes are all L-shaped, and the two limit stop boxes are symmetrically arranged.

[0016] A welding method for a welding device for an automobile body-in-white comprises the following steps:

[0017] Step 1: After placing the automobile body-in-white parts on top of the two strong suction cups, use the external suction device to firmly adsorb and fix the automobile body-in-white parts through the strong suction cups;

[0018] Step 2: The telescopic axes of the two electric gas rods are activated separately to adjust the angle of the adsorbed automobile body-in-white parts;

[0019] Step 3: Weld the car body in white through the welding head by moving the position of the welding robot arm;

[0020] Step 4: During the welding of the automobile body in white, the suction force generated by the suction fan absorbs the fume during welding into the filter box through the fume extraction pipe, the mobile box, the fume extraction hole, the exhaust pipe, the limit stop box and the fume extraction mesh for filtering and adsorption treatment;

[0021] Step 5: The particles adhering to the surface of the activated carbon adsorption net can be cleaned by the reciprocating movement of the cleaning scraper;

[0022] Step 6: After welding is completed, the welding head can be rotated between two cleaning soft brushes to remove the welding points on the surface of the welding head;

[0023] Step 7: Move the position of the moving box and the cleaning soft brush by adjusting the screw rod to facilitate the removal of welding spots on the surface of welding heads of different specifications;

[0024] Step 8: Finally, remove the welded automobile body-in-white parts from the tooling.

[0025] In summary, according to the welding equipment of the embodiment of the present invention, the driving motor in the multi-specification welding slag removal component drives the rotating shaft to rotate, so that the welding seat and the welding head can accurately adjust the position and angle, so as to adapt to different welding requirements and welding slag removal scenarios. The cooperation between the swivel and the moving rod and the adjusting screw by adjusting the handle can accurately control the position of the moving block on the limit rod, thereby driving the moving box and the cleaning soft brush to make precise position adjustments. This adjustability enables the cleaning soft brush to better adapt to welding heads of different specifications and shapes, ensuring comprehensive and effective removal of welding slag. Compared with the traditional fixed structure cleaning method, the efficiency and quality of welding slag removal are greatly improved, and the welding quality problems caused by incomplete cleaning are reduced. At the same time, the risk of damage to the welding head is reduced, and the service life of the welding head is extended, thereby reducing production costs and improving automobile The overall process level and product quality of body-in-white welding; the bottom of the limit stop box first contacts the body-in-white component of the automobile, and when the welding robot arm pushes the welding head to slide down and get close to the body-in-white of the automobile, the compression spring is squeezed and pushed to slide inside the fixed rod, and the welding head at this time will slide between the two clean soft brushes to get close to the surface of the body-in-white component of the automobile, and the limit stop box first contacts the surface of the body-in-white component of the automobile, which can limit the welding position, and at the same time, the two limit stop boxes are symmetrically arranged and continuously contact the surface of the body-in-white of the automobile, which effectively blocks the welding position and effectively prevents the staff from being injured due to accidental contact during welding. At the same time, it can also prevent external dust or substances from adhering to the welding position of the body-in-white component of the automobile just after welding is completed, so as to avoid affecting the welding effect and welding quality.

[0026] Through the strong suction of the suction fan in the filter extraction component, combined with the connection design of the extraction pipe and the exhaust pipe, by setting the extraction holes inside the cleaning soft brush and the mobile box, and opening the extraction mesh holes on the inner side of the limit stop box, the smoke generated during the welding process can be captured in all directions and at multiple angles, which greatly improves the efficiency and range of the extraction, and avoids the leakage and diffusion of the smoke. Compared with the traditional local extraction or poor filtering effect of the device, this component can more effectively improve the working environment, improve the environmental protection and safety of the production, and the cleaning scraper can automatically clean the activated carbon adsorption net, remove the impurities and blockages on the adsorption net, and ensure the continuous and efficient filtering effect;

[0027] The cleaning scraper slides down under the action of the raised distance of the protrusion, so that the cleaning scraper compresses the compression spring 2, and when the cleaning scraper slides over the protrusion, the rebound force of the compression spring 2 makes the cleaning scraper hit the surface of the activated carbon adsorption net again. The intermittent sliding and knocking of the cleaning scraper on the bottom of the activated carbon adsorption net can ensure that the activated carbon adsorption net is cleaned comprehensively and thoroughly. At the same time, the vibration force of knocking can shake off the dust particles on the surface of the activated carbon adsorption net, further improving the cleaning effect, thereby effectively extending the service life of the activated carbon adsorption net, ensuring the long-term stable operation of the filter smoke extraction component, and providing a cleaner and safer environment for welding work.

[0028] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0030] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0031] Figure 2 A schematic diagram of a partial structure of a mounting frame according to an embodiment of the present invention;

[0032] Figure 3 A cross-sectional view of the internal structure of a mounting frame according to an embodiment of the present invention;

[0033] Figure 4 A cross-sectional view of the internal structure of a swivel according to an embodiment of the present invention;

[0034] Figure 5 For the present invention Figure 4 A schematic diagram of the structure enlargement in the middle;

[0035] Figure 6 For the present invention Figure 4 A magnified schematic diagram of the structure at B in the middle;

[0036] Figure 7 For the present invention Figure 4 A magnified schematic diagram of the structure at C in the middle;

[0037] Figure 8 A schematic diagram of a partial structure inside a filter box according to an embodiment of the present invention;

[0038] Fig. 9 For the present invention Figure 8 A magnified schematic diagram of the structure at D in the middle;

[0039] Fig.10It is a schematic diagram of the bump structure of the present invention.

[0040] Reference numerals:

[0041] 1. Assembly seat; 2. Welding robot arm; 3. Mounting frame; 4. Electric gas rod; 5. Powerful suction cup;

[0042] Multiple specifications of welding slag removal components; 601, driving motor; 602, rotating shaft; 603, welding seat; 604, rotating ring; 605, welding head; 606, fixed rod; 607, moving rod; 608, fixed box; 609, compression spring 1; 610, adjusting screw; 611, limiting rod; 612, adjusting handle; 613, moving block; 614, moving box; 615, cleaning soft brush; 616, baffle;

[0043] 7. Filter smoke extraction assembly; 701. Filter box; 702. Smoke exhaust pipe; 703. Activated carbon adsorption net; 704. Suction fan; 705. Smoke extraction pipe; 706. Smoke extraction hole; 707. Exhaust pipe; 708. Limit stop box; 709. Smoke extraction mesh; 710. Rotating rod; 711. Reciprocating screw rod; 712. Connecting shaft; 713. Worm; 714. Worm wheel; 715. Sliding block; 716. Mounting rod; 717. Compression spring 2; 718. Slide plate; 719. Movable rod; 720. Cleaning scraper; 721. Bump; 8. Fixing port. DETAILED DESCRIPTION

[0044] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0046] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] When welding parts of the body-in-white (BIW) using welding equipment in the prior art, due to the presence of oxide layers, oil stains, rust or other impurities on the surface of the welding material of the body-in-white, these substances will partially fall off and form debris due to the high temperature and pressure during the welding process. In addition, due to the high temperature and pressure during welding, these debris are easily adhered to the surface of the welding head which is also in a high temperature state. At the same time, there will be impurities such as dust and metal particles in the welding working environment. These impurities will float in the welding area during the welding process to form weld debris and adhere to the surface of the welding head. The presence of debris changes the actual contact area and shape between the welding head and the welding material, which will cause uneven distribution of current in the welding area, thereby affecting the heat generation and fusion effect of the weld. Some areas will be over-melted due to the high current density, while other areas may not be welded firmly due to insufficient current, resulting in uneven welding quality and defective products, which will increase costs.

[0048] Reference below Figure 1-Figure 10 A welding apparatus for an automobile body-in-white according to an embodiment of the present invention is described.

[0049] See also Figures 1 to 10 As shown, the present invention provides an embodiment: a welding device for a car body in white, comprising an assembly seat 1, a welding robot arm 2, the welding robot arm 2 is fixedly connected to the outer wall of the assembly seat 1, and a mounting frame 3 is installed at one end of the welding robot arm 2 away from the assembly seat 1, and further comprising:

[0050] A multi-specification welding slag removal component 6 is used to remove residual welding spots adhered to the surface of welding heads of different specifications;

[0051] The fume extraction filter component 7 is used to absorb and filter the fume and dust during welding;

[0052] The upper surface of the assembly seat 1 is symmetrically fixedly connected with an electric gas rod 4, which can accurately control the telescopic length, so as to realize flexible adjustment of the height of the strong suction cup 5. The top ends of the two electric gas rods 4 are fixedly connected with a strong suction cup 5, which can provide a large and uniform adsorption force, stably fix the parts to be welded, and prevent the parts from being displaced or shaken during the welding process, so as to ensure the accuracy and quality of welding. Compared with other fixing methods, the strong suction cup 5 will not cause damage to the surface of the parts, and is suitable for parts of various shapes and materials. One side of the strong suction cup 5 is connected to an external suction device;

[0053] Compared with the existing automobile body-in-white welding equipment, this equipment has added a multi-specification welding slag removal component 6, which can effectively cope with welding heads of different specifications, timely and thoroughly remove the welding point debris adhered to the surface of the welding head, and avoid the problems of reduced welding quality and increased wear of the welding head due to residual debris. It significantly improves the accuracy and stability of welding and extends the service life of the welding head. At the same time, the introduction of the filter smoke extraction component 7 can quickly absorb the harmful smoke and dust generated during welding, creating a cleaner and safer working environment for operators and reducing the risk of occupational diseases. The combination of the electric gas rod 4 and the strong suction cup 5 can firmly adsorb the body-in-white parts to be welded, ensuring that the parts will not be displaced during the welding process, thereby further improving the accuracy and quality of welding.

[0054] The multi-specification welding slag removal component 6 includes a driving motor 601 fixedly connected to the inside of the mounting frame 3, which can accurately control the rotation of the rotating shaft 602, realize the precise positioning and angle adjustment of the welding seat 603 and the welding head 605, and improve the accuracy and flexibility of welding and welding slag removal. The output shaft of the driving motor 601 is fixedly connected to the rotating shaft 602, and the bottom end of the rotating shaft 602 is fixedly connected to the welding seat 603, which provides a stable installation foundation for the welding head 605, ensures that the welding head 605 remains stable during the working process, and improves the welding quality. The welding head 605 is installed at the bottom end of the welding seat 603, and the outer wall of the welding seat 603 is rotatably connected to the swivel 604. The bottom of the mounting frame 3 is symmetrically fixedly connected with a fixed rod 606, which provides a stable guide and support for the sliding of the moving rod 607, ensuring the stable movement of the moving rod 607 in the vertical direction, thereby ensuring that the pressure of the welding slag removal is uniform and stable, the inside of the rotating ring 604 is symmetrically slidably connected with the moving rod 607, the top of the moving rod 607 is fixedly connected with a baffle 616, the baffle 616 is slidably connected to the inside of the fixed rod 606, the bottom end of the moving rod 607 is fixedly connected with a fixed box 608, the outer wall of the moving rod 607 is sleeved with a compression spring 609, and the two ends of the compression spring 609 are respectively fixedly connected to the rotating ring 604 and the fixed box 608;

[0055] Compared with the existing welding slag removal technology, the multi-specification welding slag removal component 6 has significant advantages. The driving motor 601 drives the rotating shaft 602 to rotate, so that the welding seat 603 and the welding head 605 can accurately adjust the position and angle, so as to adapt to different welding requirements and welding slag removal scenarios. The cooperation between the rotating ring 604 and the moving rod 607, plus the elastic effect of the compression spring 609, can flexibly adapt to welding heads 605 of different specifications, and ensure that stable and appropriate pressure is applied during the welding slag removal process to avoid excessive pressure damaging the welding head 605 or too little pressure resulting in incomplete removal of welding slag. The setting of the fixed rod 606 and the baffle 616 ensures the stability and accuracy of the movement of the moving rod 607, further improving the effect and efficiency of removing welding slag. This design can more effectively remove the welding slag adhered to the surface of welding heads 605 of different specifications, improve welding quality, reduce the wear of the welding head 605, extend its service life, and reduce production costs. At the same time, the precise and stable welding slag removal operation helps to improve the overall accuracy and consistency of automobile body-in-white welding, thereby improving product quality and market competitiveness.

[0056] The multi-specification welding slag removal assembly 6 also includes an adjusting screw 610 that is rotatably connected to the inside of a fixed box 608, a limiting rod 611 is fixedly connected to the inside of the fixed box 608, a moving block 613 is threadedly connected to the outer wall of the fixed box 608, an adjusting handle 612 is fixedly connected to the end of the adjusting screw 610 away from the welding head 605, the moving blocks 613 are slidably connected to the outer wall of the limiting rod 611, the bottom of the moving block 613 is fixedly connected to a moving box 614, and a cleaning soft brush 615 is fixedly connected to the inner side of the moving box 614;

[0057] Compared with the existing welding slag removal technology, the multi-specification welding slag removal component 6 has significant advantages. By adjusting the handle 612 and rotating the adjusting screw 610, the position of the moving block 613 on the limit rod 611 can be accurately controlled, thereby driving the moving box 614 and the cleaning soft brush 615 to perform precise position adjustment. This adjustability enables the cleaning soft brush 615 to better adapt to welding heads 605 of different specifications and shapes, ensuring comprehensive and effective removal of welding slag. Compared with the traditional fixed structure cleaning method, the efficiency and quality of welding slag removal are greatly improved, and the welding quality problems caused by incomplete cleaning are reduced. At the same time, the risk of damage to the welding head 605 is reduced, and the service life of the welding head 605 is extended, thereby reducing production costs and improving the overall process level and product quality of automobile body-in-white welding.

[0058] The smoke extraction filter assembly 7 includes a filter box 701 fixedly connected to the outer wall of the mounting frame 3, which provides a closed space for installing filter components and filtering smoke and dust, ensuring the stability and safety of the filtering process. Its sturdy structure can withstand internal pressure and external environmental influences. The upper surface of the filter box 701 is fixedly connected to a smoke exhaust pipe 702, which discharges the filtered and purified gas to the external environment, ensuring that the filtered clean gas can be discharged in an orderly manner to avoid accumulation inside the equipment. The inside of the filter box 701 is fixedly connected to an activated carbon adsorption net 703, which can effectively absorb harmful substances and odors in the smoke and dust, significantly improve the filtering effect, and make the exhausted gas cleaner and more environmentally friendly. A suction fan 704 is installed at the bottom of the filter box 701 to generate strong suction, which is the power source of the entire smoke extraction filtration system. The smoke can be quickly sucked into the filter box 701 to ensure that the smoke generated during the welding process is processed in time. The suction fan 704 is fixedly connected to the mobile box 614 with a smoke extraction pipe 705, and a connection channel is established between the suction fan 704 and the mobile box 614, so that the smoke can be smoothly transferred from the mobile box 614 to the filter box 701 for processing. The cleaning soft brush 615 and the mobile box 614 are both provided with smoke extraction holes 706 arranged in a linear array, which are distributed inside the cleaning soft brush 615 and the mobile box 614 and can absorb smoke from multiple positions and angles, thereby improving the efficiency and comprehensiveness of smoking. The bottom of the mobile box 614 is fixedly connected with an exhaust pipe 707, and the bottom end of the exhaust pipe 707 is fixedly connected to a limit stop box 708, and the inner side of the limit stop box 708 is provided with smoking mesh holes 709 arranged in a linear array.

[0059] Compared with the prior art, the present filtering smoke extraction component 7 has significant advantages. By arranging smoke extraction holes 706 inside the cleaning soft brush 615 and the movable box 614, and opening a smoking mesh hole 709 on the inner side of the limit stop box 708, the smoke generated during the welding process can be captured in all directions and at multiple angles, which greatly improves the efficiency and range of smoking and avoids the leakage and diffusion of smoke. The activated carbon adsorption net 703 can efficiently adsorb harmful substances in the smoke, effectively purify the air, and emit cleaner gas. The strong suction of the suction fan 704, combined with the connecting design of the smoke extraction pipe 705 and the exhaust pipe 707, ensures that the smoke can be quickly sucked into the filter box 701 for treatment, reducing pollution in the welding environment and protecting the health of operators. Compared with traditional local smoking or poor filtering effects, this component can more effectively improve the working environment and improve the environmental protection and safety of production.

[0060] The filter smoke extraction component 7 also includes a rotating rod 710 and a reciprocating screw 711 which are respectively rotatably connected to the inside of the filter box 701. The outer wall of the reciprocating screw 711 is slidably connected to a slider 715. The motor output shaft of the suction fan 704 is fixedly connected to a connecting shaft 712. The outer wall of the connecting shaft 712 is fixedly connected to a worm 713. The outer wall of the rotating rod 710 is fixedly connected to a worm wheel 714, which cooperates with the worm 713 and has a large transmission ratio and self-locking performance, can ensure the accuracy and stability of the transmission, and prevent reverse rotation. The worm 713 and the worm wheel 714 are meshed with each other, and the upper surface of the slider 715 is symmetrically fixed. A mounting rod 716 is fixedly connected, and a compression spring 717 is fixedly connected inside the mounting rod 716. A slide plate 718 is fixedly connected to the top of the compression spring 717. A movable rod 719 is fixedly connected to the upper surface of the slide plate 718. A cleaning scraper 720 is fixedly connected to the top of the movable rod 719, which directly acts on the activated carbon adsorption net 703 to remove impurities and blockages thereon, thereby ensuring the filtering performance of the adsorption net and extending its service life. The top of the cleaning scraper 720 contacts the bottom of the activated carbon adsorption net 703, and a protrusion 721 is symmetrically fixedly connected to the lower surface of the activated carbon adsorption net 703.

[0061] Compared with the existing filter smoke extraction component 7, this component has significant advantages. When the suction fan 704 is working, its motor output shaft drives the worm 713 to rotate through the connecting shaft 712, and then drives the worm wheel 714 and the rotating rod 710 to rotate, so that the reciprocating screw rod 711 drives the slider 715 to reciprocate. The cleaning scraper 720 on the slider 715 can automatically clean the activated carbon adsorption net 703, remove impurities and blockages on the adsorption net, and ensure its continuous and efficient filtering effect. This automatic cleaning mechanism avoids the problem of reduced filtering efficiency and frequent manual disassembly and cleaning of traditional filtering devices due to blockage of the activated carbon adsorption net 703, which greatly reduces maintenance costs and labor intensity. At the same time, when the cleaning scraper 720 moves at the bottom of the activated carbon adsorption net 703, it passes through the protrusion 72 1, the cleaning scraper 720 slides down under the action of the raised distance of the protrusion 721, so that the cleaning scraper 720 compresses the compression spring 2 717, and when the cleaning scraper 720 slides over the protrusion 721, the rebound force of the compression spring 2 717 makes the cleaning scraper 720 hit the surface of the activated carbon adsorption net 703 again, and the intermittent sliding and knocking of the cleaning scraper 720 on the bottom of the activated carbon adsorption net 703 can ensure that the activated carbon adsorption net 703 is cleaned comprehensively and thoroughly, and at the same time, the vibration force of the knocking can shake off the dust particles on the surface of the activated carbon adsorption net 703, further improving the cleaning effect, thereby effectively extending the service life of the activated carbon adsorption net 703, ensuring the long-term stable operation of the filter smoke extraction component 7, and providing a cleaner and safer environment for welding work.

[0062] Reference Figure 6As shown, the bottom of the fixed box 608 is provided with a fixed opening 8, and the moving blocks 613 are slidably connected inside the fixed opening 8;

[0063] Reference Figure 2 , Figure 4 and Figure 7 As shown, the shape of the cleaning soft brush 615 is arc-shaped, and its arc shape can match the surface shape of the welding head 605, increasing the contact area, thereby more thoroughly removing the welding slag. The arc design improves the cleaning efficiency and quality, and reduces the cleaning dead angle. The shape of the limit stop box 708 is L-shaped, and the L-shaped shape increases the contact surface for smoke collection, which can better block and collect smoke drifting from below, and the two limit stop boxes 708 are symmetrically arranged. The symmetrical arrangement makes the smoke collection more uniform and comprehensive, and there will be no single-side omission, which effectively improves the smoke collection effect and ensures the cleanliness of the welding environment.

[0064] A welding method for a welding device for an automobile body-in-white comprises the following steps:

[0065] Step 1: After placing the automobile body-in-white component on top of the two strong suction cups 5, the automobile body-in-white component is firmly adsorbed and fixed by the strong suction cups 5 through an external suction device;

[0066] Step 2: The telescopic axes of the two electric gas rods 4 are respectively activated to adjust the angle of the adsorbed automobile body-in-white parts;

[0067] Step 3: welding the automobile body in white through the welding head 605 by moving the position of the welding robot arm 2;

[0068] Step 4: During the welding of the automobile body in white, the suction force generated by the suction fan 704 absorbs the fume during welding into the filter box 701 through the fume extraction pipe 705, the movable box 614, the fume extraction hole 706, the exhaust pipe 707, the limit stop box 708 and the fume extraction mesh 709 for filtering and adsorption treatment;

[0069] Step 5: The particles adhering to the surface of the activated carbon adsorption net 703 can be cleaned by the reciprocating movement of the cleaning scraper 720;

[0070] Step 6: After welding is completed, the welding head 605 is rotated between two cleaning soft brushes 615 to remove the welding points adhered to the surface of the welding head 605;

[0071] Step 7: Move the positions of the moving box 614 and the cleaning soft brush 615 by adjusting the screw rod 610 to facilitate the cleaning of the solder joints on the surface of the solder joints 605 of different specifications;

[0072] Step 8: Finally, remove the welded automobile body-in-white parts from the tooling.

[0073] In combination with the above preferred embodiments, the working principle of the present invention is as follows:

[0074] In the initial state, the welding equipment is in an unstarted state, the driving motor 601 and the adjustment handle 612 in the multi-specification welding slag removal component 6 are not running, the cleaning soft brush 615 and the cleaning scraper 720 are in the initial position, the suction fan 704 in the filter smoke extraction component 7 is not working, the slider 715 is stationary, and the welding head 605 is not performing welding operations.

[0075] During operation: after placing the automobile body-in-white parts on the top of the two strong suction cups 5, the automobile body-in-white parts are firmly adsorbed and fixed by the strong suction cups 5 through the external suction device, and the electric gas rod 4 is electrically controlled by the controller to start, and the height of the strong suction cup 5 is adjusted through its precise telescopic control, so that it can firmly adsorb the automobile body-in-white parts to be welded. This operation can ensure that the parts will not be displaced or shaken during the welding process, thereby ensuring the accuracy and quality of welding. Compared with the traditional fixing method, the strong suction cup 5 will not cause damage to the surface of the parts, and is suitable for parts of various shapes and materials, thereby improving the versatility and applicability of the equipment;

[0076] Then the controller electrically controls the start of the welding robot arm 2 to start welding the parts. The compression force of the compression spring 1 609 pushes the fixed box 608, the movable box 614, the cleaning soft brush 615, the exhaust pipe 707 and the limit stop box 708 to slide down, so that the bottom of the limit stop box 708 first contacts the white body of the car. When the welding robot arm 2 pushes the welding head 605 to slide down and get close to the white body of the car, the compression spring 1 609 will be squeezed and push the movable rod 607 to slide inside the fixed rod 606. At this time, the welding head 605 will be between the two cleaning soft brushes. 615 slides toward the surface of the automobile body-in-white component, and the limit stop box 708 first contacts the surface of the automobile body-in-white component, which can limit the welding position. At the same time, the two limit stop boxes 708 are symmetrically arranged and continuously contact the surface of the automobile body-in-white, which effectively blocks the welding position and effectively prevents the workers from being injured due to accidental contact during welding. At the same time, it can also prevent external dust or substances from adhering to the welding position of the automobile body-in-white component just after welding is completed, so as to avoid affecting the welding effect and welding quality;

[0077] During the welding process, the welding head 605 will produce welding point debris. While welding, the controller electrically controls the suction fan 704 to start, and the suction fan 704 generates a strong suction force. The smoke generated by welding enters through the smoking mesh 709 on the inner side of the limit stop box 708 and the smoking hole 706 inside the mobile box 614, and then enters the mobile box 614 through the exhaust pipe 707, and then is sucked into the filter box 701 through the smoke pipe 705. The smoke entering the filter box 701 is adsorbed and purified by the activated carbon adsorption net 703, and the clean gas is discharged from the exhaust pipe 702. This process can capture the smoke generated during the welding process in all directions and angles, greatly improving the efficiency and range of smoking, and avoiding the leakage and diffusion of smoke. The activated carbon adsorption net 703 can efficiently absorb harmful substances in the smoke, effectively purify the air, and discharge cleaner gas, reducing pollution in the welding environment and protecting the health of operators. Compared with traditional local smoking or poor filtering effects, this component can more effectively improve the working environment and improve the environmental protection and safety of production.

[0078] When the suction fan 704 is working, its motor output shaft drives the worm 713 to rotate through the connecting shaft 712, and then drives the worm wheel 714 and the rotating rod 710 to rotate, so that the reciprocating screw rod 711 drives the slider 715 to reciprocate, and the cleaning scraper 720 on the slider 715 automatically cleans the activated carbon adsorption net 703 to remove impurities and blockages on the adsorption net. When the cleaning scraper 720 moves to the bottom of the activated carbon adsorption net 703, the existence of the protrusion 721 makes the cleaning scraper 720 slide down under the action of the protrusion distance of the protrusion 721, compressing the compression spring 2 717, and when the cleaning scraper 720 slides over the protrusion 721, the rebound force of the compression spring 2 717 makes the cleaning scraper 720 press against the The cleaning scraper 720 touches the surface of the activated carbon adsorption net 703 and intermittently slides and knocks on the bottom of the activated carbon adsorption net 703, which can ensure that the activated carbon adsorption net 703 is cleaned comprehensively and thoroughly. At the same time, the vibration force of the knocking can shake off the dust particles on the surface of the activated carbon adsorption net 703, further improving the cleaning effect. This automatic cleaning mechanism avoids the problem of reduced filtration efficiency and frequent manual disassembly and cleaning of traditional filtering devices due to clogging of the activated carbon adsorption net 703, which greatly reduces maintenance costs and labor intensity, effectively prolongs the service life of the activated carbon adsorption net 703, ensures the long-term stable operation of the filter smoke extraction component 7, and provides a cleaner and safer environment for welding work.

[0079] After welding is completed, the controller electrically controls the drive motor 601 to start, and its output shaft drives the rotating shaft 602 to rotate, and the rotating shaft 602 drives the welding seat 603 fixedly connected thereto to rotate, and the welding seat 603 drives the welding head 605 installed thereon to rotate, so that the welding seat 603 and the welding head 605 are adjusted to a position and angle suitable for removing welding slag, and then the worker manually turns the adjusting handle 612 to drive the adjusting screw 610 to rotate, and under the action of the adjusting screw 610 thread and the limiting of the moving block 613 by the limiting rod 611, the moving block 613 moves on the limiting rod 611 and the adjusting screw 610, and the movement of the moving block 613 drives the moving box 614 fixedly connected thereto to move synchronously, and the movement of the moving box 614 drives the cleaning soft brush 615 fixedly connected thereto to move synchronously, thereby adjusting the position of the cleaning soft brush 615 The cleaning soft brushes 615 are arranged so as to fully contact the surfaces of welding heads 605 of different specifications, and the driving motor 601 drives the rotating shaft 602, the welding seat 603 and the welding head 605 to rotate synchronously between the rotating ring 604 and the two cleaning soft brushes 615. The two cleaning soft brushes 615 are in contact with the surfaces of welding heads 605 of different specifications, and during the rotation of the welding head 605, the welding point debris on the surface of the welding head 605 is removed. The thread of the adjusting screw 610 has a self-locking effect. This design can flexibly adapt to welding heads 605 of different specifications, ensure that stable and appropriate pressure is applied during the process of removing welding slag, avoid excessive pressure damaging the welding head 605 or too little pressure resulting in incomplete removal of welding slag, improve the effect and efficiency of removing welding slag, reduce the wear of the welding head 605, and extend its service life.

[0080] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0081] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A welding device for automobile body-in-white, comprising an assembly seat (1) and a welding mechanical arm (2), wherein the welding mechanical arm (2) is fixedly connected to the outer wall of the assembly seat (1), and a mounting frame (3) is installed at one end of the welding mechanical arm (2) away from the assembly seat (1), characterized in that: Also includes: A multi-specification welding slag removal component (6) is used to remove residual welding spots adhered to the surface of welding heads of different specifications; The filtering and extracting assembly (7) is used for absorbing and filtering the fume and dust during welding.

2. A welding device for automobile body-in-white according to claim 1, characterized in that: The upper surface of the assembly seat (1) is symmetrically fixedly connected with electric gas rods (4), the top ends of the two electric gas rods (4) are fixedly connected with strong suction cups (5), and one side of the strong suction cups (5) is connected to an external suction device.

3. The welding equipment for automobile body-in-white according to claim 1, characterized in that: The multi-specification welding slag removal assembly (6) comprises a driving motor (601) fixedly connected to the inside of a mounting frame (3); the output shaft of the driving motor (601) is fixedly connected to a rotating shaft (602); the bottom end of the rotating shaft (602) is fixedly connected to a welding seat (603); the bottom end of the welding seat (603) is installed with a welding head (605); the outer wall of the welding seat (603) is rotatably connected to a rotating ring (604); the bottom of the mounting frame (3) is symmetrically fixedly connected to a fixing rod (606); The interior of the rotating ring (604) is symmetrically and slidably connected to a moving rod (607), the top of each moving rod (607) is fixedly connected to a baffle (616), and each baffle (616) is slidably connected to the interior of the fixed rod (606), the bottom of each moving rod (607) is fixedly connected to a fixed box (608), and the outer wall of each moving rod (607) is sleeved with a compression spring 1 (609), and the two ends of each compression spring 1 (609) are fixedly connected to the rotating ring (604) and the fixed box (608), respectively.

4. The welding equipment for automobile body-in-white according to claim 3, characterized in that: The multi-specification welding slag removal assembly (6) also includes an adjusting screw (610) that is rotatably connected to the inside of a fixed box (608), the inside of the fixed box (608) is fixedly connected to a limiting rod (611), the outer wall of the fixed box (608) is threadedly connected to a moving block (613), the end of the adjusting screw (610) away from the welding head (605) is fixedly connected to an adjusting handle (612), the moving block (613) is slidably connected to the outer wall of the limiting rod (611), the bottom of the moving block (613) is fixedly connected to a moving box (614), and the inner side of the moving box (614) is fixedly connected to a cleaning soft brush (615).

5. The welding equipment for automobile body-in-white according to claim 4, characterized in that: The filtering smoke extraction component (7) comprises a filter box (701) fixedly connected to the outer wall of the mounting frame (3); the upper surface of the filter box (701) is fixedly connected to a smoke exhaust pipe (702); the interior of the filter box (701) is fixedly connected to an activated carbon adsorption net (703); a suction fan (704) is installed at the bottom of the filter box (701); the suction fans (704) are respectively fixedly connected to the movable box (614) with a smoke extraction pipe (705); the interiors of the cleaning soft brush (615) and the movable box (614) are provided with smoke extraction holes (706) arranged in a linear array; the bottom of the movable box (614) is fixedly connected to an exhaust pipe (707); the bottom ends of the exhaust pipes (707) are fixedly connected to a limit stop box (708); the inner side of the limit stop box (708) is provided with smoking mesh holes (709) arranged in a linear array.

6. The welding equipment for automobile body-in-white according to claim 5, characterized in that: The filter smoke extraction assembly (7) also includes a rotating rod (710) and a reciprocating screw (711) which are respectively rotatably connected to the inside of the filter box (701); the outer wall of the reciprocating screw (711) is slidably connected to a slider (715); the motor output shaft of the suction fan (704) is fixedly connected to a connecting shaft (712); the outer wall of the connecting shaft (712) is fixedly connected to a worm (713); the outer wall of the rotating rod (710) is fixedly connected to a worm wheel (714); the worm (713) and the worm wheel (714) are meshed with each other; the upper surface of the slider (715) A mounting rod (716) is symmetrically fixedly connected to the surface, and a compression spring 2 (717) is fixedly connected inside the mounting rod (716). A slide plate (718) is fixedly connected to the top of the compression spring 2 (717). A movable rod (719) is fixedly connected to the upper surface of the slide plate (718). A cleaning scraper (720) is fixedly connected to the top of the movable rod (719). The top of the cleaning scraper (720) contacts the bottom of the activated carbon adsorption net (703). A protrusion (721) is symmetrically fixedly connected to the lower surface of the activated carbon adsorption net (703).

7. The welding equipment for automobile body-in-white according to claim 4, characterized in that: The bottom of the fixed box (608) is provided with a fixed opening (8), and the movable blocks (613) are slidably connected inside the fixed opening (8).

8. The welding equipment for automobile body-in-white according to claim 5, characterized in that: The cleaning soft brushes (615) are all arc-shaped, and the position limit stop boxes (708) are all L-shaped, and the two position limit stop boxes (708) are symmetrically arranged.

9. A method for welding a car body in white, applied to the welding equipment for a car body in white according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: After placing the automobile body-in-white component on top of the two strong suction cups (5), the automobile body-in-white component is firmly adsorbed and fixed by the strong suction cups (5) using an external suction device; Step 2: The telescopic shafts of the two electric gas rods (4) are respectively activated to adjust the angle of the adsorbed automobile body-in-white parts; Step 3: welding the automobile body in white through the welding head (605) by moving the welding robot arm (2); Step 4: During the welding of the automobile body in white, the suction force generated by the suction fan (704) is used to absorb the fume during welding into the filter box (701) through the fume extraction pipe (705), the movable box (614), the fume extraction hole (706), the exhaust pipe (707), the limit stop box (708) and the fume extraction mesh (709) for filtering and adsorption treatment; Step 5: The particles adhering to the surface of the activated carbon adsorption net (703) can be cleaned by reciprocating movement of the cleaning scraper (720); Step 6: After welding is completed, the welding head (605) is rotated between two cleaning soft brushes (615) to remove the welding points adhered to the surface of the welding head (605); Step 7: The positions of the movable box (614) and the cleaning soft brush (615) are moved by adjusting the screw rod (610) to facilitate the removal of welding spots on the surfaces of welding heads (605) of different specifications; Step 8: Finally, remove the welded automobile body-in-white parts from the tooling.

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