Windproof, smoke-removing and environment-friendly integrated device for gas metal arc welding and application

Abstract

The invention discloses a windproof, smoke-removing and environment-friendly integrated device for gas metal arc welding and application of the windproof, smoke-removing and environment-friendly integrated device for gas metal arc welding. The windproof, smoke-removing and environment-friendly integrated device for gas metal arc welding comprises an adjustable windproof cover fixing rod, a windproof cover, a smoke exhaust pipe and a smoke filtering device; the other end of the adjustable windshield fixing rod is connected with the windshield, one end of the smoke exhaust pipe is connected with a smoke exhaust opening in the top of the windshield, the other end of the smoke exhaust pipe is connected with the smoke filtering device, and the smoke filtering device is connected with a welding trolley upper shell of the consumable electrode gas shielded automatic welding through a fixing support. The wind-proof, smoke-removing and environment-friendly integrated device has the effects of wind prevention, splashing prevention, arc damage prevention, dust removal and the like, the integrated function of construction and environment protection is achieved, the situation that an original environment-friendly device is independently used and cannot be integrated into construction equipment is broken through, integration of the construction equipment, a tool and the environment-friendly device is creatively achieved, and a new environment-friendly development thought and direction are provided.

Description

Technical Field

[0001] The present invention belongs to the technical field of welding, relates to the submerged arc automatic welding technology, and particularly relates to an integrated device for wind prevention and smoke removal and its application for gas shielded metal arc welding. Background Art

[0002] Compared with the traditional shielded metal arc welding, the efficiency of only single-wire solid wire gas shielded metal arc welding can be increased by 70% compared with the shielded metal arc welding, and the welding material cost is saved by more than 19% compared with the shielded metal arc welding; compared with the submerged arc welding which is only applicable to flat welding and horizontal welding with specific grooves, the gas shielded metal arc automatic welding can be applied to more welding positions and has a wider application range. Therefore, the gas shielded metal arc automatic welding with a higher degree of automation, even the double-wire and triple-wire gas shielded metal arc welding and the ultra-narrow gap gas shielded metal arc welding, can greatly improve the production efficiency, reduce the labor intensity, and the weld formation is more beautiful, which is of great significance for popularization and is widely used in the product manufacturing of industries such as nuclear power, electric power, construction, bridges, petrochemical equipment, pipelines, and steel structures.

[0003] However, as an inherent property of the gas shielded metal arc automatic welding, it has higher requirements for the wind speed of its application environment. When the wind speed is greater than 0.5 m / s, wind prevention measures should be taken because the influence of the wind will form adverse factors on the welding, form turbulent flow, and generate defects; at the same time, a large amount of welding fume will also be generated during the welding process of the gas shielded metal arc automatic welding, containing oxides such as Fe, Mn, and Si, which pose a threat to the health of welders and the deteriorating ecological environment.

[0004] Looking at the current existing technologies, construction sections, and equipment facilities, the above problems cannot be effectively solved. The reasons are as follows:

[0005] 1. At present, there are various means adopted by the existing technologies to meet the wind speed requirements of the gas shielded metal arc automatic welding, such as building wind protection sheds, movable wind protection sheds, wind protection rooms, etc., but the wind prevention problems cannot be solved economically and effectively because of the following deficiencies:

[0006] 1) The input cost is relatively large, the construction is time-consuming and laborious, and the construction period is affected;

[0007] 2) The site environmental conditions are restricted by the position and shape of the construction products. There is no dust removal equipment that can effectively match various construction spaces and structural conditions, and the welding fume cannot be effectively eliminated in the wind protection facilities, and even the fume accumulation in the environment where the welders are located is increased.

[0008] 2. To solve the welding fume pollution, even for indoor construction with relatively superior construction conditions, many enterprises have invested a large amount of cost to purchase fume dust removal devices for the workshop, but still cannot meet the requirements of the gas shielded metal arc automatic welding. The reasons are as follows:

[0009] 1) The cost of the supporting equipment for flue gas dust removal is high, and it must be equipped at each working station, which not only occupies a large floor area, but also consumes a lot of energy and electricity and has a high operating cost.

[0010] 2) The flue gas dust removal equipment cannot follow the automatic gas shielded arc welding trolley with a consumable electrode to walk synchronously to different welding positions.

[0011] 3) At present, all dust removal equipment adopts the method of collecting dust by increasing the suction force in the air, and the required high wind speed has exceeded the requirements of gas shielded welding for wind speed. Even if other disadvantages are not considered, this fatal disadvantage of high wind speed determines that it cannot be applied to the automatic gas shielded arc welding with a consumable electrode.

[0012] Therefore, the prior art still cannot economically, efficiently and effectively meet the requirements of wind prevention and smoke removal for the automatic gas shielded arc welding with a consumable electrode. Summary of the Invention

[0013] To overcome the difficulties in the background art, the purpose of the present invention is to provide an integrated device for wind prevention, smoke removal and environmental protection for the automatic gas shielded arc welding with a consumable electrode and its application, so that the automatic gas shielded arc welding machine with a consumable electrode can be equipped with an integrated device for wind prevention, smoke removal and environmental protection that can walk synchronously with the welding machine. It can not only be widely applied to automatic gas shielded arc welding machines of different brands and different specifications, but also be suitable for the working conditions of welding products of various thickness groove forms and various materials by the welding machine.

[0014] To achieve the above invention purpose, the present invention provides the following technical solutions:

[0015] The present invention first discloses an integrated device for wind prevention, smoke removal and environmental protection for the automatic gas shielded arc welding with a consumable electrode, which includes an adjustable wind shield fixing rod, a wind shield, a smoke exhaust pipe and a flue gas filtering device. One end of the adjustable wind shield fixing rod is suspended and is adjustably connected to the upper shell of the welding trolley of the automatic gas shielded arc welding with a consumable electrode. The other end of the adjustable wind shield fixing rod is connected to the wind shield. One end of the smoke exhaust pipe is connected to the smoke exhaust port at the top of the wind shield, and the other end of the smoke exhaust pipe is connected to the flue gas filtering device. The flue gas filtering device is connected to the upper shell of the welding trolley of the automatic gas shielded arc welding with a consumable electrode through a fixed support.

[0016] As a preferred solution, the adjustable windshield fixing rod includes a first connecting rod, a second connecting rod and a third connecting rod. One end of the first connecting rod is movably connected to the upper shell of the automatic welding trolley, and the other end of the first connecting rod is movably connected to the upper end of the second connecting rod, and there is a certain included angle between the first connecting rod and the second connecting rod. The third connecting rod is connected to the lower end of the second connecting rod, and the third connecting rod is connected to the windshield. It is worth mentioning that the first connecting rod connecting the screw of the upper shell of the automatic welding trolley can be adjusted according to the protruding length of the welding equipment head, so as to be applicable to the requirements of various specifications of gas metal arc welding machines. The second connecting rod can be adjusted according to the relative height and position of the welding torch nozzle and the workpiece to ensure the fit between the position of the windshield and the position of the welding torch nozzle; the third connecting rod is connected to the long circular hole of the windshield to adjust and fix the relative position between the windshield body and the welding torch nozzle. The adjustable windshield fixing rod designed by the present invention can be adjusted according to the position of the upper shell of different gas metal arc welding trolleys to adapt to the equipment structures of various gas metal arc welding machines.

[0017] As a further preferred solution of the present invention, a plurality of fixed long circular holes are arranged at intervals along the length direction of the first connecting rod to be applicable to the fixed connection of various specifications of automatic welding trolleys; a connecting long circular hole is arranged at the end of the second connecting rod far from the third connecting rod, and the first connecting rod is adjustably installed in the connecting long circular hole, and the relative height of the welding torch nozzle and the workpiece is adjusted by adjusting the installation position of the first connecting rod in the connecting long circular hole.

[0018] As another preferred solution of the present invention, the windshield includes a window frame, a window lens and a flexible enclosure. The window frame is composed of a profile frame and a positioning pin and has a nested fixing structure for detachable installation and fixing of the flexible enclosure and the window lens to adapt to various welding positions. Preferably, the window frame has four sides, a top and a bottom. The four sides are arranged in pairs opposite to each other, and a window lens is installed on each side. A flexible sealing sheet is arranged on the top of the window frame. The flexible sealing sheet adopts a flexible structure, can withstand high temperatures, does not hinder operations such as passing, fixing and micro-swing welding of the welding torch nozzle, and at the same time has the function of preventing smoke and dust from spreading; after the flexible sealing sheet is installed, while preventing arc light from leaking out, it can fix the window lenses installed on both sides along the weld axis direction and prevent these two window lenses from falling off in the overhead welding position. A smoke exhaust port is also arranged on the top of the window frame, and the smoke exhaust port is connected to the smoke exhaust pipe; the bottom of the window frame is connected to the flexible enclosure.

[0019] As a further preferred embodiment of the present invention, the flexible enclosure is composed of profiles and flexible materials. The profiles are connected to the bottom of the window frame, and the flexible materials are heat-resistant and detachably connected to the profiles. The flexible enclosure can meet the wind protection requirements in the extended area of the dry wire of the gas metal arc welding and around the welding groove, and can be modularly replaced according to different groove forms to ensure the wind protection effect.

[0020] Preferably, the flexible sealing sheet is connected to the window frame by fixing members.

[0021] Preferably, the window lens is connected to the window frame by positioning pins. The window lens of the present invention has the function of automatically changing color according to the light intensity. It is transparent and colorless before arc ignition, and changes to the dark color of a welding protective lens according to the arc light change after arc ignition, which is convenient for observing and adjusting the wire position and controlling the molten pool while avoiding arc light from burning the welder's eyes. After being installed on the window frame, it can meet the wind protection requirements around the nozzle. The wind shield designed by the present invention has the function of wind protection on the one hand, and can restrain the diffusion of fumes to facilitate air drainage and dust removal on the other hand. At the same time, it reduces the workload of grinding and cleaning the spatter around the welding groove, as well as the cost of anti-spatter coatings and their application (the detachable window lens can be used repeatedly after removing the adhered welding spatter and attached dust, or replacing the spare lens).

[0022] A further preferred embodiment is that an elastic sleeve for connecting the exhaust pipe is sleeved on the exhaust port, and an elastic sealing ring for tightly fitting the elastic sleeve on the outer wall of the exhaust port is also connected between the elastic sleeve and the exhaust port.

[0023] The exhaust pipe of the present invention is a connection structure between the wind shield and the flue gas filtering device, and is connected to the wind shield and the flue gas filtering device respectively through the two end interfaces. It has a reasonable diameter, stretchability and flexibility, and can ensure the restraint of fumes and the diversion of flue gas while meeting the requirements of the positioning adjustment process of the gas metal arc welding automatic welding machine head.

[0024] As another preferred embodiment of the present invention, the flue gas filtering device includes a filtering component and an exhaust component. One end of the filtering component is provided with a connection port for connecting the exhaust pipe, and the other end of the filtering component is connected to the exhaust component through a connecting pipe.

[0025] In the present invention, the filtering component can effectively filter and adsorb the fumes generated during the welding process and has an interface connected to the exhaust pipe. Preferably, the filtering component includes a filtering body, in which a plurality of fume filtering test pieces are detachably inserted. The plurality of fume filtering test pieces are arranged in parallel and at intervals. A viewing window for observing the fume filtering test pieces is further provided on the side surface of the filtering body. The insertable design of the fume filtering test pieces enables convenient disassembly, cleaning or replacement of the filtering layer. Moreover, the fume filtering test pieces can be observed through the provided viewing window to confirm whether the filtering layer in the filtering component needs to be cleaned or replaced.

[0026] A further preferred solution is that the exhaust component includes a housing and an exhaust fan installed in the housing. A fixed support is installed on the housing for fixedly connecting the fume filtering device to the automatic welding trolley. The exhaust fan is electrically connected to a stepless speed change power switch, enabling the exhaust component to have stepless speed change, ensuring that no air turbulence that affects the welding quality is generated near the welding torch nozzle while effectively exhausting the fumes. The power supply uses the power supply of the automatic welding trolley, ensuring synchronous movement with the welding trolley while not adding extra burden to the welding machine.

[0027] The present invention further discloses the application of a windproof, fume-removing and environmental protection integrated device for gas metal arc welding. This windproof, fume-removing and environmental protection integrated device can be applied not only to the upper shells of different brands and specifications of gas metal arc welding trolleys, but also to products with various thicknesses of groove forms and various materials.

[0028] Due to the adoption of the above technical solutions, the present invention has the following beneficial effects:

[0029] 1. The windproof, fume-removing and environmental protection integrated device for gas metal arc welding according to the present invention adopts a split design, which improves the versatility of the device and the disassembly, cleanability, replaceability and maintainability of the consumables. When installed on different welding machines (i.e., different automatic welding trolleys), only the connection points of the adjustable windproof cover fixing rods need to be adjusted to match the protruding length of the gas metal arc welding machine head and the relative position between the windproof cover main body and the welding torch nozzle of different gas metal arc welding machines. Local pollution or damage can be repaired locally, reducing the use and maintenance costs.

[0030] 2. In actual production applications, it solves the problems of high cost for building windproof facilities in outdoor construction of gas metal arc welding, delaying the construction period, and the inability to build windproof facilities for large equipment or pipelines with space limitations to apply gas metal arc welding. This windproof, fume-removing and environmental protection integrated device occupies extremely little space, can move randomly, does not affect the welding operation, and has easily obtainable materials, excellent processing performance and low price, without a significant increase in cost.

[0031] 3. The integrated windproof and fume-removing environmental protection device for gas shielded metal arc welding of the present invention is applicable to various thicknesses and various groove forms, has a wide tolerance for the groove parameters of products, can be continuously used once installed, and does not require repeated disassembly and assembly of the entire device. Only the easily soiled parts need to be quickly disassembled, cleaned, maintained or replaced separately.

[0032] 4. In terms of the application scope, the integrated windproof and fume-removing environmental protection device for gas shielded metal arc welding of the present invention has no additional requirements for the welding materials and base metals used, has no category restrictions on the welded materials, does not limit or narrow the application scope of the original gas shielded metal arc welding machine, and does not increase the usage constraints of the original gas shielded metal arc welding.

[0033] 5. When the integrated windproof and fume-removing environmental protection device for gas shielded metal arc welding of the present invention is actually used, there is no obvious difference in the welding operation compared with the gas shielded metal arc welding machine, and there are no special requirements for the welding operator's skills. It can be used immediately after installation. Only the easily soiled parts need to be inspected, cleaned and maintained, and the fume-removing effect needs to be monitored. The welder can quickly adapt.

[0034] 6. The integrated windproof and fume-removing environmental protection device for gas shielded metal arc welding of the present invention has excellent durability in continuous windproof and fume-removing. Due to the innovative design of its windproof cover, it can effectively prevent wind, restrain, divert and purify soot, reduce welding spatter on the surface of the product base metal, and has a variety of stable power supply channels. The overall use effect is stable, and it can effectively achieve the purpose of windproof and fume-removing. The fume-removing effect can replace the welder's mask.

[0035] 7. On the premise of ensuring windproof and fume-removing, the windproof cover design of the present invention is conducive to the welder observing the position of the welding wire and the molten pool. At the same time, the effective combination of its exhaust pipe, windproof cover structure and color-changing viewing window lens can replace the traditional welding arc-proof mask worn, reducing the welding operation burden of the welder.

[0036] 8. The innovative design of the components, shapes and functions of the integrated windproof and fume-removing environmental protection device for gas shielded metal arc welding of the present invention is applicable to the gas shielded metal arc welding machine, greatly reducing the construction cost, broadening the applicable range of this welding method, reducing the labor intensity, improving the production efficiency, optimizing the welder's construction conditions, protecting the ecological environment, and having reliable practicability, extremely high versatility and considerable economy, and is highly popularizable.

[0037] The above description is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly and implement it according to the content of the specification, the following takes the preferred embodiments of the present invention and combines with the attached drawings to describe in detail as follows. Brief Description of the Drawings

[0038] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other design solutions and drawings can also be obtained based on these drawings.

[0039] Figure 1 Front view of the integrated windproof, smoke removal and environmental protection device;

[0040] Figure 2 Left view of the integrated windproof, smoke removal and environmental protection device;

[0041] Figure 3 Top view of the integrated windproof, smoke removal and environmental protection device;

[0042] Figure 4 Bottom view of the integrated windproof, smoke removal and environmental protection device;

[0043] Figure 5 Schematic three-dimensional structure diagram of the adjustable windproof cover fixing rod;

[0044] Figure 6 Top view of the windproof cover;

[0045] Figure 7 Bottom view of the windproof cover;

[0046] Figure 8 Schematic three-dimensional structure diagram of the smoke exhaust pipe;

[0047] Figure 9 Schematic three-dimensional structure diagram of the flue gas filtering device;

[0048] Figure 10 Appearance schematic diagram of the integrated windproof, smoke removal and environmental protection device.

[0049] Explanation of reference numerals:

[0050] 1. Adjustable windproof cover fixing rod;

[0051] 101. First connecting rod, 102. Second connecting rod, 103. Third connecting rod;

[0052] 1011. Fixed oblong hole, 1021. Connecting oblong hole;

[0053] 2. Windproof cover;

[0054] 201. Window frame, 202. Window lens, 203. Flexible enclosure, 204. Flexible sealing piece, 205. Smoke exhaust port, 206. Fixing piece, 207. Positioning pin;

[0055] 2021. Weld direction viewing window lens a, 2022. Weld direction viewing window lens b, 2023. Weld side viewing window lens c;

[0056] 3. Exhaust pipe;

[0057] 4. Flue gas filtering device;

[0058] 401. Filter assembly, 402. Exhaust air assembly, 403. Connecting pipe, 404. Stepless speed change power switch, 405. Fixed support;

[0059] 4011. Connection port, 4012. Observation window for soot filtration test piece, 4013. Soot filtration test piece.

[0060] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Specific Embodiments

[0061] The content of the present invention can be further understood by combining the following detailed description of the preferred implementation methods of the present invention and the included embodiments. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present invention belongs. If the definitions of specific terms disclosed in the prior art are inconsistent with any definitions provided in the present invention, the definitions provided in the present invention shall prevail.

[0062] In a typical embodiment of the present application, a windproof and smoke-removing environmental protection integrated device for gas metal arc welding is provided. Referring to Figure 1-4 , it includes an adjustable windproof cover fixing rod 1, a windproof cover 2, an exhaust pipe 3, and a flue gas filtering device 4. One end of the adjustable windproof cover fixing rod 1 is suspended and is adjustably connected to the upper shell of the welding trolley of the gas metal arc welding. The other end of the adjustable windproof cover fixing rod 1 is connected to the windproof cover 2. One end of the exhaust pipe 3 is connected to the exhaust port at the top of the windproof cover 2, and the other end of the exhaust pipe 3 is connected to the flue gas filtering device 4. The flue gas filtering device 4 is connected to the upper shell of the welding trolley of the gas metal arc welding through a fixed support 405.

[0063] The above windproof and smoke-removing environmental protection integrated device is a split structure. Preferably, the adjustable windproof cover fixing rod 1 and the windproof cover are connected by bolts, and the exhaust pipe 3 is connected to the windproof cover 2 and the exhaust pipe 3 is connected to the flue gas filtering device 4 by joints.

[0064] In a preferred embodiment, referring to Figure 5 and Figure 10, the adjustable windshield fixing rod 1 includes a first connecting rod 101, a second connecting rod 102 and a third connecting rod 103. One end of the first connecting rod 101 is movably connected to the upper shell of the automatic welding trolley, and the other end of the first connecting rod 101 is movably connected to the upper end of the second connecting rod 102, and there is a certain included angle between the first connecting rod 101 and the second connecting rod 102. The third connecting rod 103 is connected to the lower end of the second connecting rod 102, and the third connecting rod 103 is connected to the windshield 2.

[0065] In a specific embodiment, as Figure 5 shown, preferably, a plurality of fixed oblong holes 1011 are arranged at intervals along the length direction of the first connecting rod 101 of the present invention to be suitable for the fixed connection of automatic welding trolleys of various specifications; a connecting oblong hole 1021 is arranged at the end of the second connecting rod 102 far from the third connecting rod 103, and the first connecting rod 101 is adjustably installed in the connecting oblong hole 1021, and the relative height between the welding torch nozzle and the workpiece is adjusted by adjusting the installation position of the first connecting rod 101 in the connecting oblong hole 1021. It is worth mentioning that the first connecting rod connecting the screw of the upper shell of the automatic welding trolley can be adjusted according to the length of the head of different welding equipment protruding, so as to be suitable for the needs of various specifications of gas metal arc welding machines. The second connecting rod can be adjusted according to the relative height and position between the welding torch nozzle and the workpiece to ensure the fit degree between the position of the windshield and the position of the welding torch nozzle; the third connecting rod is connected to the oblong hole of the windshield to adjust and fix the relative position between the windshield body and the welding torch nozzle. Therefore, the adjustable windshield fixing rod designed by the present invention can three-dimensionally adjust and fix the position of the windshield. According to the design form of the automatic welding trolley of the gas metal arc welding machine of different brands and specifications, the length of the head of the corresponding matching welding machine protruding, the relative height and position between the welding torch nozzle and the workpiece are adjusted through the fixing rod to fix the windshield.

[0066] In another preferred embodiment, as Figure 6As shown, the wind shield 2 includes a window frame 201, a window lens 202, and a flexible enclosure 203. The window frame 201 is composed of a profile frame and positioning pins, forming a nested fixing structure for detachable installation and fixing of the flexible enclosure 203 and the window lens 202. Preferably, the window frame 201 has four sides, a top, and a bottom. The four sides are arranged in pairs opposite to each other, and a window lens 202 is installed on each side. In a specific embodiment, the inner side of the four sides of the window frame is a thin plate, and the other three sides are observable (including the two sides along the weld axis and the side for the welder to observe). A flexible sealing sheet 204 is provided at the top of the window frame 201. Preferably, the top of the window frame 201 and the exhaust pipe connection port preset the flue gas diversion direction, that is, the top area of the window frame is divided into a smoke exhaust port and a flexible sealing sheet. Preferably, the flexible sealing sheet 204 is connected to the window frame 201 through a fixing member 206. In the present invention, the flexible sealing sheet is made of a high-temperature resistant material and has a flexible sealing structure, which facilitates operations such as passing through, fixing, and slightly swinging welding of the welding torch nozzle. At the same time, it restricts the dust from spreading. After the flexible sealing sheet is installed, it can block the leakage of arc light and play a role in fixing the window lenses installed on the two sides along the weld axis.

[0067] Preferably, as Figure 6 shown, the window lens 202 is connected to the window frame 201 through a positioning pin 207. The combined design structure of the window frame and the positioning pin facilitates the replacement of the side window lenses, adapts to various welding positions, and the welding machine will not fall off during walking, ensuring the windproof effect around.

[0068] In a specific preferred embodiment, an elastic sleeve for connecting the exhaust pipe 3 is sleeved on the smoke exhaust port 205, and an elastic sealing ring for tightly fitting the elastic sleeve on the outer wall of the smoke exhaust port is also connected between the elastic sleeve and the smoke exhaust port 205.

[0069] The bottom of the window frame 201 is connected to the flexible enclosure 203. In a specific preferred embodiment, the flexible enclosure 203 adopts a modular design. The replaceable module is composed of a profile 2031 and a flexible material 2032. The profile 2031 is connected to the bottom of the window frame 201, and the flexible material 2032 is detachably connected to the profile 2031 and can be modularly replaced according to different welding groove forms. Both the profile and the flexible material are high-temperature resistant materials. The material and thickness of the flexible material are suitable, and the number of connecting sheets in each direction varies according to actual strength requirements and the shape can be cut, suitable for various forms of welding grooves, ensuring the windproof effect around the welding groove. The profile of the replaceable module has a convex edge, which cooperates with the fixing groove of the bottom profile of the wind shield to achieve quick disassembly, fixing, and replacement.

[0070] It should be further noted that all four sides of the window frame are inclined to facilitate the welder to observe the position of the welding wire and the condition of the molten pool; the flexible enclosure at the bottom is provided with a flexible enclosure fixing groove to facilitate the plug-and-play and convenient disassembly and assembly of the flexible material, providing conditions for wind prevention in the adjacent area around the lower groove opening.

[0071] In addition, the window lens of the present invention has the function of automatically changing color according to the light intensity. It is transparent and colorless before arc ignition, and turns dark as a welding protective lens according to the arc light change after arc ignition. It is convenient to observe and adjust the position of the welding wire and control the molten pool while avoiding arc light burning the welder's eyes. After being installed on the window frame, it can meet the wind prevention and protection around the nozzle. While having the function of wind prevention, the window lens also has the function of replacing the traditional welding mask and reducing the workload of removing welding spatter. Its shape design is convenient for the welder to observe the position of the welding wire and the requirements of the welding molten pool. At the same time, it has the function of changing color according to the light intensity, replacing the traditional way of wearing a welding mask to prevent arc light damage, reducing the welder's welding burden and enabling better observation of the molten pool; the window lens has high temperature resistance and wear resistance, and the adhered spatter can be easily removed and reused.

[0072] In a specific preferred embodiment, referring to Figure 6 and Figure 7 , the windproof cover structure is composed of a window frame, a flexible enclosure, and a window lens. The window frame is composed of a fixed frame and a positioning pin. The window frame has a card slot for loading and fixing the flexible enclosure (assembled by profiles and flexible materials) on three sides of the lower part, a connecting and nesting fixed structure for loading and unloading the window lens (window lens a2021 in the weld direction, window lens b2022 in the weld direction, window lens c2023 on the weld side) on three sides of the middle part, and a smoke exhaust port and a flexible sealing sheet are provided at the top; the flexible material of the flexible enclosure can be adjusted and cut according to different groove forms to ensure the windproof effect; the window lens (window lens a in the weld direction, window lens b in the weld direction, window lens c on the weld side) has the function of automatically changing color according to the light intensity. It is transparent and colorless before arc ignition, and turns dark as a welding protective lens according to the arc light change after arc ignition. It is convenient to observe and adjust the position of the welding wire and control the molten pool while avoiding arc light burning the welder's eyes. Combined with the smoke exhaust pipe, it can replace the traditional welding arc-proof mask worn. After being installed on the window frame, it can meet the wind prevention and protection around the nozzle, and can also restrain the diffusion of smoke and dust to facilitate air drainage and dust removal. At the same time, it reduces the spatter around the welding groove (the window lens a in the weld direction, window lens b in the weld direction, and window lens c on the weld side can be disassembled to remove the adhered welding spatter and attached dust and reused, or replace with a spare lens).

[0073] In the present invention, as Figure 8As shown in the figure, both ends of the smoke exhaust pipe 3 are respectively provided with sealed connection interfaces for the windproof cover 2 and the flue gas filtering device 4. The smoke exhaust pipe has an applicable diameter that is conducive to guiding the flue gas from the windproof cover, flexibility to adapt to the distance of the welding trolley head and the adjustment of the welding torch height, and flexibility required to maintain a shape that does not affect the operation of the welding machine. It can restrain the soot and guide the flue gas, and at the same time, its sealing ability can ensure that there is no leakage of welding arc light within its range, and avoid arc damage to personnel without welding masks nearby.

[0074] In another preferred embodiment, referring to Figure 9 and Figure 10 , the flue gas filtering device 4 includes a filtering component 401 and an exhaust component 402. One end of the filtering component 401 is provided with a connection port 4011 for connecting to the smoke exhaust pipe, and the other end of the filtering component is connected to the exhaust component 402 through a connecting pipe 403.

[0075] In the present invention, the filtering component can effectively filter and adsorb the soot during the welding process and has a connection port with the smoke exhaust pipe. Preferably, the filtering component includes a filtering body. As Figure 9 shown, a plurality of soot filtering test pieces 4013 are detachably inserted into the filtering body. The plurality of soot filtering test pieces 4013 are arranged in parallel and at intervals, and an observation window 4012 for observing the soot filtering test pieces is further provided on the side surface of the filtering body. The insertable design of the soot filtering test pieces enables convenient disassembly, cleaning, or replacement of the filter layer. Moreover, the soot filtering test pieces can be observed through the provided observation window to confirm whether the filter layer (i.e., the soot filtering test pieces) in the filtering component needs to be cleaned or replaced. The soot filtering test pieces can be reused after cleaning.

[0076] A further preferred solution is that, as Figure 9 shown, the exhaust component 402 includes a housing and an exhaust fan installed in the housing. A fixed support 405 is installed on the housing for fixedly connecting the flue gas filtering device to the automatic welding trolley. The exhaust fan is electrically connected to a stepless speed change power switch 404, enabling the exhaust component to have stepless speed change, ensuring that there is no air turbulence that affects the welding quality near the welding torch nozzle while effectively exhausting the smoke. The power supply uses the power supply of the automatic welding trolley, ensuring that it walks synchronously with the welding trolley without adding extra burden to the welding machine.

[0077] During actual production, the first connecting rod, the second connecting rod, and the third connecting rod can be manufactured by cutting; the windproof cover window frame can be manufactured by machining and wire cutting; the weld direction window lenses a, the weld direction window lenses b, and the weld side window lens c are made of high-temperature resistant, high-hardness wear-resistant, and color-changing materials; the flexible material of the flexible enclosure is a high-temperature resistant flexible material; the materials of each component are easy to purchase and process, and the cost is reasonable and economical without a significant cost increase.

[0078] It is only necessary to adjust the installation position of the upper shell of the welding trolley on the adjustable windproof cover fixing rod according to the extension length of different MIG (Metal Inert Gas) automatic welding torches, so that this integrated windproof, smoke removal and environmental protection device can be applied to MIG automatic welding machines of different brands and specifications, and is suitable for the working conditions of welding products with various thicknesses of groove forms and various materials by the welding machine.

[0079] During use, assemble the integrated windproof, smoke removal and environmental protection device for MIG automatic welding to the corresponding MIG automatic welding trolley (welding machine) according to the corresponding installation instructions, and then it can be used normally according to the usage instructions. The specific operations are as follows:

[0080] Assembly of the integrated windproof, smoke removal and environmental protection device for MIG automatic welding:

[0081] 1) Preparation before installation: Ensure that the equipment is powered off before installing the welding torch. Assemble all components of the windproof cover into a whole (pre-cut the flexible material 2032 according to the groove form, install 2 layers perpendicular to the groove axis direction that conform to the groove shape and are equal in height to the base material at each place, install 2 layers parallel to the groove axis direction that are equal in height to the surface of the base material at each place, and fix the joint at each surface with a soft nail; install the weld direction viewing lens a, weld direction viewing lens b and weld side viewing lens c in sequence, fix the weld side viewing lens c with the positioning pin 207, and then install the top flexible sealing sheet and the smoke exhaust port with the fixing piece 206 of the viewing window frame using the flexible sealing sheet);

[0082] 2) Fix the windproof cover:

[0083] a) Install and fix the connecting rod (i.e., the first connecting rod) between the windproof cover fixing rod and the MIG automatic welding trolley with screws to the upper shell of the automatic welding trolley;

[0084] b) Initially combine and adjust the three-dimensional dimensions of the adjustable windproof cover fixing rod;

[0085] c) After connecting the smoke exhaust pipe to the smoke exhaust port (make sure that the square surface of the windproof cover is parallel to the weld groove axis direction and the trapezoidal surface is perpendicular to the weld groove axis direction for easy observation of the welding wire or molten pool), pass the welding torch nozzle through the flexible sealing sheet of the smoke exhaust pipe;

[0086] d) According to the extension length of the welding torch of the corresponding MIG automatic welding machine, the relative height and position between the welding torch nozzle and the workpiece, readjust the connecting rod (i.e., the second connecting rod) for adjusting the relative height and position between the welding torch nozzle and the workpiece, and the connecting rod (i.e., the third connecting rod) for adjusting the relative position between the windproof cover body and the welding torch nozzle, and then fix the relative position between the windproof cover and the welding torch nozzle with screws;

[0087] 3) Fix the smoke filter device: fix the smoke filter device to the upper shell of the automatic welding trolley through the smoke filter device and the automatic welding trolley fixed support with screws;

[0088] 4) The windproof, smoke-removing and environmentally friendly integrated device is assembled as a whole:

[0089] Connect the smoke exhaust pipe and the smoke filter device through the connection port between the smoke exhaust pipe and the smoke filter device, and the connection port between the smoke filter device and the smoke exhaust pipe, and adjust the position to complete the overall assembly of the windproof, smoke-removing and environmentally friendly integrated device;

[0090] 5) Turn on the stepless speed power switch: After adjusting the wind speed to the specified speed through the stepless speed power switch, the welding construction of metal electrode gas shielded automatic welding can be carried out normally;

[0091] 6) Turn off the windproof, smoke-removing and environmentally friendly integrated device after welding: When the windproof, smoke-removing and environmentally friendly integrated device needs to be turned off after welding stops, wait for 3-5 minutes until the residual welding smoke is eliminated, first turn off the smoke filter switch on the stepless speed power switch, and then turn off the power of the windproof, smoke-removing and environmentally friendly integrated device.

[0092] The windproof, smoke-removing and environmentally friendly integrated device provided by the present invention can be applied to all materials that can be applied to the gas shielded automatic welding equipment, without adding any threshold conditions, and does not add any restrictive conditions to the original welding operation range of the gas shielded automatic welding machine. It can be used continuously after one installation, and has achieved the effective integration of construction equipment and environmental protection devices in a pioneering way.

[0093] The above is only a preferred embodiment of the present invention, which is only illustrative of the present invention and does not limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made by ordinary technicians in this field to the technical solution of the present invention should fall within the protection scope determined by the claims of the present invention.​

Claims

1. A windproof, smoke-removing and environmentally friendly integrated device for metal-electrode gas shielded automatic welding, characterized in that: The invention comprises an adjustable wind shield fixing rod (1), a wind shield (2), a smoke exhaust pipe (3) and a smoke filter device (4); one end of the adjustable wind shield fixing rod (1) is suspended and adjustably connected to the upper shell of a welding trolley for metal-metal gas shielded automatic welding; the other end of the adjustable wind shield fixing rod (1) is connected to the wind shield (2); one end of the smoke exhaust pipe (3) is connected to the smoke exhaust port at the top of the wind shield (2); the other end of the smoke exhaust pipe (3) is connected to the smoke filter device (4); and the smoke filter device (4) is connected to the upper shell of a welding trolley for metal-metal gas shielded automatic welding via a fixed support (405).

2. The windproof, smoke-removing and environmentally friendly integrated device for metal-electrode gas shielded automatic welding according to claim 1, characterized in that: The adjustable windshield fixing rod (1) comprises a first connecting rod (101), a second connecting rod (102) and a third connecting rod (103); one end of the first connecting rod (101) is movably connected to the upper shell of the automatic welding trolley; the other end of the first connecting rod (101) is movably connected to the upper end of the second connecting rod (102); a certain angle is formed between the first connecting rod (101) and the second connecting rod (102); the third connecting rod (103) is connected to the lower ends of the two connecting rods (102), and the third connecting rod (103) is connected to the windshield (2).

3. The windproof, smoke-removing and environmentally friendly integrated device for metal-electrode gas shielded automatic welding according to claim 2, characterized in that: The first connecting rod (101) is provided with a plurality of fixed oblong holes (1011) at intervals along its length direction, so as to be suitable for fixed connection of automatic welding carriages of various specifications; A connecting oblong hole (1021) is provided on the end of the second connecting rod (102) away from the third connecting rod (103); the first connecting rod (101) is adjustably installed in the connecting oblong hole (1021); and the relative height between the welding gun nozzle and the workpiece is adjusted by adjusting the installation position of the first connecting rod (101) in the connecting oblong hole (1021).

4. The windproof, smoke-removing and environmentally friendly integrated device for metal-electrode gas shielded automatic welding according to claim 1, characterized in that: The wind shield (2) comprises a window frame (201), a window lens (202) and a flexible enclosure (203); the window frame (201) is composed of a profile frame and positioning pins and has a nested fixed structure for loading and unloading and fixing the flexible enclosure (203) and the window lens (202); the window frame (201) has four side faces, a top and a bottom; the four side faces are arranged opposite to each other in pairs, and each side face is installed with a window lens (202); a flexible sealing sheet (204) is arranged at the top of the window frame (201), and a smoke exhaust port (205) is also arranged at the top of the window frame (201); the smoke exhaust port (205) is connected to the smoke exhaust pipe (3); the bottom of the window frame (201) is connected to the flexible enclosure (203).

5. The windproof, smoke-removing and environmentally friendly integrated device for metal-electrode gas shielded automatic welding according to claim 4, characterized in that: The window lens (202) is connected to the window frame (201) via a positioning pin (207); The flexible sealing sheet (204) is connected to the window frame (201) via a fixing member (206); The smoke exhaust port (205) is sleeved with an elastic sleeve for connecting to a smoke exhaust pipe (3), and an elastic sealing ring is connected between the elastic sleeve and the smoke exhaust port (205) to enable the elastic sleeve to fit tightly against the outer wall of the smoke exhaust port.

6. The windproof, smoke-removing and environmentally friendly integrated device for metal-electrode gas shielded automatic welding according to claim 4, characterized in that: The flexible enclosure (203) is composed of a profile (2031) and a flexible material (2032); the profile (2031) is connected to the bottom of the window frame (201); the flexible material (2032) is detachably connected to the profile (2031) and can be modularly replaced according to different welding groove forms.

7. The windproof, smoke-removing and environmentally friendly integrated device for metal-electrode gas shielded automatic welding according to claim 1, characterized in that: The smoke filtering device (4) comprises a filtering component (401) and an exhaust component (402); one end of the filtering component (401) is provided with a connection port (4011) for connecting to a smoke exhaust pipe, and the other end of the filtering component is connected to the exhaust component (402) via a connecting pipe (403).

8. The windproof, smoke-removing and environmentally friendly integrated device for metal-electrode gas shielded automatic welding according to claim 7, characterized in that: The filter assembly (401) comprises a filter body, in which a plurality of smoke filter test pieces (4013) are detachably inserted, the plurality of smoke filter test pieces (4013) are arranged in parallel and at intervals, and a window (4012) for observing the smoke filter test pieces is also provided on the side of the filter body.

9. The windproof, smoke-removing and environmentally friendly integrated device for metal-electrode gas shielded automatic welding according to claim 7, characterized in that: The exhaust assembly (402) comprises a shell and an exhaust fan installed in the shell, the exhaust fan is electrically connected to a stepless speed-changing power switch (404), and a fixed support (405) is installed on the shell for fixedly connecting the smoke filtering device to the automatic welding carriage.

10. An application of the windproof, smoke-removing and environmentally friendly integrated device for metal-electrode gas shielded automatic welding according to any one of claims 1 to 9, characterized in that: The windproof, smoke-removing and environmentally friendly integrated device can be used not only on the upper shell of the metal-electrode gas shielded automatic welding trolley of different brands and specifications, but also on the welding of products of various thicknesses, groove forms and materials.

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