A portable welding device and method
The convenient welding device, which links the turbine fan and transmission components, solves the problem of welding fumes accumulating and interfering with visibility, and achieves efficient fume dispersion and negative pressure suction, thereby improving welding quality and ease of operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHONGQING HAOFENG ALUMINUM CO LTD
- Filing Date
- 2026-06-11
- Publication Date
- 2026-07-21
AI Technical Summary
When existing welding equipment uses negative pressure to extract dust, the smoke gathers near the welding torch, interfering with the operator's vision and affecting welding quality and ease of operation.
A convenient welding device was designed, which uses a turbine fan and transmission components to convert the suction negative pressure airflow into the mechanical swinging motion of the baffle. The rotational power of the turbine fan drives the connecting rod to realize the lateral reciprocating motion of the baffle, which disperses the smoke and draws it into the cavity. Combined with the sealing gasket and oblique through hole to optimize the airflow path, a physically linked baffle effect is achieved.
It effectively disperses smoke interference, improves operator visibility, reduces the risk of damage to transmission components, enhances welding quality and operator comfort, and ensures the reliability of continuous high-load operation.
Smart Images
Figure CN122425290A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of welding equipment technology, and specifically to a convenient welding device and method. Background Technology
[0002] Gas metal arc welding (GMAW) generates welding fumes containing toxic gases such as heavy metal oxides during operation. To protect the health of operators and reduce environmental pollution, existing welding equipment typically incorporates negative pressure suction for fume extraction. For example, the Fortis series of equipment manufactured by Fortis Intelligent Equipment Co., Ltd. uses a fume extraction structure external to the welding torch. However, this structure, designed to handle toxic fumes, introduces a new problem: during extraction, the area near the welding torch tip (directly above the operator's field of vision) experiences negative pressure suction, causing the smoke to accumulate and focus before being drawn in. This severely interferes with the operator's vision, affecting welding quality and causing numerous inconveniences. Therefore, there is an urgent need to design a convenient welding device that effectively solves the problem of smoke accumulation interfering with visibility and possesses negative pressure suction functionality. Summary of the Invention
[0003] To address the aforementioned problems, this invention provides a convenient welding device and method that effectively solves the problem of smoke accumulation interfering with visibility and maintains the function of collecting welding fumes under negative pressure.
[0004] To achieve the above objectives, the technical solution of the present invention is as follows: A portable welding device includes a mobile vehicle, on which a welding system for performing welding operations and generating suction negative pressure is provided. The output end of the welding system is provided with a welding torch execution assembly for outputting a welding arc. A housing is provided on the outside of the welding torch execution assembly, and a first cavity is opened inside the housing. A fixed shaft is fixedly connected to the side wall of the first cavity, and a turbine fan is rotatably connected to the side wall of the fixed shaft. An air intake assembly for entering air is provided on the side wall of the first cavity, corresponding to the turbine fan. A transmission assembly is coaxially connected to the turbine fan. A first slot is opened on the top wall of the first cavity. A connecting rod is provided on the transmission assembly, passing through the first slot and extending to the outside of the housing. A baffle is fixedly connected to the other end of the connecting rod. An opening communicating with the welding system is opened on the side wall of the first cavity. The transmission assembly is used to convert the rotational motion of the turbine fan into the lateral motion of the connecting rod.
[0005] The technical principle of the above solution is as follows: During operation, the welding system creates a suction pressure difference in the first cavity inside the housing through the through-hole. Under the action of this pressure difference, outside air enters the first cavity through the air inlet assembly, forming a directional airflow. This directional airflow flows through and drives the turbine fan to rotate around a fixed axis, generating rotational power. Subsequently, this rotational power is transmitted and transformed along the transmission assembly, becoming lateral displacement power. This power, through a connecting rod passing through the first slot, drives the baffles located outside the housing to perform continuous mechanical waving. This mechanical waving action physically impacts and disperses the smoke accumulated outside the housing. The dispersed free smoke is then drawn into the first cavity with the suction airflow and finally discharged through the through-hole.
[0006] The above approach has the following beneficial effects: 1. This solution, through the mechanical linkage between the turbine fan and the transmission components, converts the suction negative pressure airflow energy originally used for smoke removal into the lateral mechanical swing energy of the baffles. This design achieves the physical breaking up of smoke plumes in areas obstructing the view without adding a drive motor or external power supply. Simultaneously, this structure creates a physical linkage between the swing frequency of the baffles and the suction airflow state: when the amount of welding smoke increases, leading to a greater suction load and suction pressure difference, the airflow velocity entering the first cavity increases accordingly, thereby driving the turbine fan speed up. This increases the lateral reciprocating frequency of the baffles, achieving the effect of automatically increasing the dispersion frequency as the amount of smoke accumulates, thus improving the problem of visual interference for operators.
[0007] 2. In this design, the core turbine fan and transmission components are housed within the first cavity of the casing, with the external spoiler vanes driven only by a connecting rod passing through a limited first slot. This layout achieves physical isolation between the precision power conversion mechanism and the external welding environment, reducing the risk of damage to the transmission components from high-temperature welding slag or spatter, and ensuring the structural reliability and service life of the device under high-frequency reciprocating motion.
[0008] Furthermore, the various independent components providing power control, circulating cooling, wire feeding, gas supply, and negative pressure suction are integrated and mounted on a mobile vehicle to form a complete welding system. This design provides systematic and reliable logistical support for the high-load continuous operation of the welding torch's actuators while maintaining the independent operation and convenient maintenance of each functional module.
[0009] Beneficial effects: The system highly integrates the power supply, cooling, wire feeding, gas supply and negative pressure suction required for welding into the welding system, and builds a well-defined and logically clear modular architecture, which provides a reliable physical path and functional support for the high-load continuous operation of the welding torch execution components.
[0010] Furthermore, a protective shell is provided inside the first cavity, and a first support rod and a second support rod are respectively connected to the inner wall of the first cavity on both sides of the protective shell. A second cavity is opened inside the protective shell, and the transmission component is located in the second cavity.
[0011] Beneficial effects: The protective shell is suspended and fixed inside the first cavity by the first and second support rods, allowing the transmission components to be housed in the second cavity. This double-layer cavity layout forms an isolation barrier between the reciprocating transmission components and the suction airflow carrying welding fumes, reducing the adhesion of dust particles to the transmission chain, lowering the probability of mechanical jamming, and helping to extend the service life of the device.
[0012] Furthermore, the transmission assembly includes a shaft assembly for transmitting power, a drive assembly for converting rotational power into vertical reciprocating power, and a reversing assembly for converting vertical reciprocating power into lateral reciprocating displacement. The shaft assembly includes a drive shaft coaxially connected to the turbine fan, with the other end of the drive shaft extending into the second cavity. A first support seat is rotatably connected to the side wall of the drive shaft and fixedly connected to the bottom wall of the second cavity.
[0013] Beneficial effects: The first support seat provides a stable physical support constraint for the drive shaft, maintaining the turbine fan's smooth rotation when receiving airflow impact and outputting torque to the drive components, reducing the eccentric vibration that is easily caused by the cantilever under stress, and improving the continuity of kinetic energy transmission.
[0014] Furthermore, the drive assembly includes a wheel coaxially connected to the end of the drive shaft away from the turbine fan. The wheel is rotatably connected to a drive rod, the other end of the drive rod is rotatably connected to a connecting rod, the other end of the connecting rod is rotatably connected to a slider, and the side wall of the slider is slidably connected to a second support seat fixedly connected to the top wall of the second cavity.
[0015] Beneficial effects: By employing a multi-link mechanical transmission system involving a wheel, a drive rod, a connecting rod, and a slider, the circular rotational motion output by the rotating shaft assembly is converted into vertical linear reciprocating motion along the guide trajectory of the second support. This design is compact, has low transmission loss, and avoids the cumbersome processing problems associated with complex spatial cam mechanisms.
[0016] Furthermore, the reversing assembly includes a rocker arm rotatably connected to the slider, a third support seat fixedly connected to the side wall of the second cavity rotatably connected to the middle of the rocker arm, a slide rod rotatably connected to the other end of the rocker arm, a second slot is provided on the top wall of the second cavity, a connecting rod is connected to the other end of the slide rod through the second slot, and a fourth support seat fixedly connected to the top wall of the second cavity is slidably connected to the side wall of the slide rod.
[0017] Beneficial effects: The rocker arm structure, hinged in the middle to the third support, creates a lever-type reversing link, achieving orthogonal conversion of the power transmission path. This allows the slide bar to output smooth lateral linear reciprocating movement within the fourth support. While changing the direction of motion, this design also allows for adjustment of the lever arm ratio at both ends of the rocker arm to match the required swing amplitude of the spoiler, expanding the flexibility of the mechanical design.
[0018] Furthermore, the top wall of the first cavity has several through holes, all of which are designed at an angle.
[0019] Beneficial effects: Taking into account the actual upward and lateral diffusion trajectory of fumes during welding operations, an oblique through-hole is added to the top wall of the first cavity, with its opening tilted towards the fume collection source. This design conforms to the natural diffusion trajectory of fumes, reduces the path resistance when some fumes are sucked in, and improves the capture efficiency of the negative pressure suction assembly for surrounding fumes.
[0020] Furthermore, the air intake assembly includes several air inlets arranged in a circular array around a fixed axis on the side wall of the first cavity, and each air inlet is equipped with a filter screen.
[0021] Beneficial effects: The air inlets are arranged in a circular array, which creates an airflow field surrounding the turbine fan when the outside air is drawn in by negative pressure. This increases the effective windward area on the turbine fan blades and improves the conversion rate of air kinetic energy into mechanical rotational kinetic energy. At the same time, the filter screen initially intercepts the air drawn into the first cavity, preventing large particles of spatter or welding slag from entering the interior and ensuring the safety of the device operation.
[0022] Furthermore, a sealing gasket is fitted onto the outer surface of the connecting rod and slides against the outer surface of the housing. The length and width of the sealing gasket are both greater than the length and width of the first groove.
[0023] Beneficial effects: By utilizing the sealing gasket to move synchronously with the connecting rod and cover the first slot, the air intake gap caused by the first slot on the side wall of the housing is effectively sealed without hindering the lateral power output. This maintains the airtight balance of the negative pressure environment within the first cavity and slows down the leakage attenuation of directional airflow.
[0024] Furthermore, a convenient welding method, based on the aforementioned convenient welding device, includes the following steps: Step 1, Welding preparation and arc initiation: Align the welding torch execution assembly with the workpiece to be welded, and control the shielding gas source assembly, cooling assembly and wire feeding assembly through the welding host assembly to deliver shielding gas and welding wire to the welding torch execution assembly and perform circulating cooling, trigger the welding arc to generate a weld pool, and start the welding operation; Step 2, Smoke Dispersion and Collection: During the process of maintaining the welding arc, circulating cooling and wire feeding, the negative pressure suction component is turned on to generate suction negative pressure inside the first cavity. The turbine fan rotates and drives the connecting rod to move laterally, so that the baffle plate fixedly connected to the connecting rod swings laterally back and forth, continuously dispersing the smoke cloud gathered above the molten pool. The dispersed smoke is sucked into the first cavity under the action of suction negative pressure and discharged from the outlet. Step 3, Welding Arc Termination and Shutdown: When the workpiece to be welded is completed, the welding host assembly stops wire feeding and extinguishes the welding arc, and the protective gas supply is stopped after a delay. After the remaining fumes are completely discharged from the outlet, the negative pressure suction assembly and cooling assembly are turned off to end the welding operation.
[0025] Beneficial effects: It provides a set of rigorous operation control logic with a complete closed-loop process. While ensuring the stable operation of the core processes required for high-quality gas metal arc welding, it couples a disturbance method of "suction airflow drive - rigid mechanical transmission - lateral swing fume removal," and designs a rigorous arc-closing and cleaning process at the end. This allows operators to obtain a clear welding field of view without increasing their operational burden, improving the comfort of human-machine interaction and the quality of welding. Attached Figure Description
[0026] Figure 1 This is an isometric view of an embodiment of the convenient welding device of the present invention; Figure 2 This is a front sectional view of the housing of an embodiment of the convenient welding device of the present invention; Figure 3 This is a side sectional view of the housing of an embodiment of the convenient welding device of the present invention; Figure 4 for Figure 2 Enlarged view of section A; Figure 5 for Figure 3 Enlarged view of section B.
[0027] The reference numerals in the accompanying drawings of the instruction manual include: 1. Welding torch actuator assembly; 2. Housing; 3. First cavity; 4. Air inlet assembly; 5. Through hole; 6. Through port; 7. Fixed shaft; 8. Turbine fan; 9. Drive shaft; 10. First support base; 11. Wheel; 12. Drive rod; 13. Connecting rod; 14. Slider; 15. Second support base; 16. Rocker arm; 17. Third support base; 18. Slide rod; 19. Fourth support base; 20. Connecting rod; 21. First slot; 22. Baffle; 23. Protective shell; 24. Second cavity; 25. First support rod; 26. Second support rod; 27. Second slot. Detailed Implementation
[0028] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0029] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0030] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0031] The following detailed description illustrates the specific implementation method: Example
[0032] As attached Figure 1 As shown: A portable welding device includes a mobile cart equipped with a welding system for performing welding operations and generating suction negative pressure. The welding system output end is equipped with a welding torch actuator 1 for outputting the welding arc. The welding system includes a welding host assembly for providing welding power and main control, a cooling assembly for circulating cooling, a wire feeding assembly for feeding welding wire, a shielding gas source assembly for providing welding shielding gas, and a negative pressure suction assembly for generating suction negative pressure. (The cooling assembly, wire feeding assembly, shielding gas source assembly, negative pressure suction assembly, and welding torch actuator 1 are all designed with reference to the Fortis equipment series.)
[0033] In welding environments, toxic welding fumes often accumulate during welding. To protect the health of operators and reduce environmental pollution, most manufacturers currently use external fume extraction structures on the welding torch for fume removal. However, this structure, designed to handle toxic fumes, introduces a new problem: during extraction, the negative pressure suction effect causes the smoke to accumulate and focus in the operator's field of vision directly above them before being inhaled, thus interfering with the operator's view and affecting welding quality. Accordingly, this invention provides a housing 2 (as shown in the attached figure) on the outside of the welding torch actuator 1. Figure 2 and attached Figure 3 As shown in the attached diagram, a first cavity 3 is provided inside the housing 2, and a through-hole 6 communicating with the welding system is provided on the side wall of the first cavity 3. Figure 4 and attached Figure 5 As shown, a fixed shaft 7 is bolted to the side wall of the first cavity 3. A turbine fan 8 is rotatably connected to the side wall of the fixed shaft 7. An air intake assembly 4 corresponding to the turbine fan 8 is provided on the side wall of the first cavity 3 for air intake. The turbine fan 8 is coaxially connected to a transmission assembly for transmitting and converting motion via a flange. A protective shell (23) is provided inside the first cavity (3). A first support rod (25) and a second support rod (26) are bolted to the inner wall of the first cavity (3) on both sides of the protective shell (23). A second cavity (24) is opened inside the protective shell (23), and the transmission assembly is located in the second cavity (24). The transmission assembly includes a rotating shaft assembly for transmitting power, a drive assembly for converting rotational power into vertical reciprocating power, and a reversing assembly for converting vertical reciprocating power into lateral reciprocating displacement.
[0034] Specifically, the shaft assembly includes a drive shaft 9 coaxially connected to the turbine fan 8 via a flange, with the other end of the drive shaft 9 extending into the second cavity 24. A first support seat 10, welded to the bottom wall of the second cavity 24, is rotatably connected to the side wall of the drive shaft 9. The drive assembly includes a wheel 11 coaxially connected to the end of the drive shaft 9 away from the turbine fan 8 via a flange. A drive rod 12 is rotatably connected to the wheel 11. A connecting rod 13 is rotatably connected to the other end of the drive rod 12. A slider 14 is rotatably connected to the other end of the connecting rod 13. A second support seat 15, welded to the top wall of the second cavity 24, is slidably connected to the slider 14. The reversing assembly includes a rocker arm 16 rotatably connected to the slider 14. A third support seat 17, welded to the side wall of the second cavity 24, is rotatably connected to the middle of the rocker arm 16. A slide rod 18 is rotatably connected to the other end of the rocker arm 16. A fourth support seat 19, welded to the top wall of the second cavity 24, is slidably connected to the slide rod 18. The top wall of the second cavity 24 has a second slot 27, and the top wall of the first cavity 3 has a first slot 21. The other end of the slide rod 18 is welded with a connecting rod 20. The other end of the connecting rod 20 passes through the first slot 21 and the second slot 27 to the outside of the shell 2 and is fixedly connected with a baffle plate 22.
[0035] The specific implementation process is as follows: When performing negative pressure suction fume removal, conventional suction structures can cause fume focusing when extracting fumes. Furthermore, as welding progresses and more fumes are generated, the suction force generated by the negative pressure suction component is usually greater, which makes the focusing and accumulation of fumes in the area above the welding torch execution component 1 more severe. It is difficult to completely eliminate the fumes instantly by relying solely on negative pressure suction, thereby interfering with the operator's observation of the molten pool.
[0036] When the negative pressure suction assembly is activated, a negative pressure is generated inside the first cavity 3. External air, driven by the pressure difference, enters the first cavity 3 through the air inlet assembly 4, forming a directional airflow. This directional airflow blows towards and impacts the blades of the turbine fan 8, driving the turbine fan 8 to rotate at high speed around the fixed shaft 7. The rotation of the turbine fan 8 directly drives the transmission shaft 9, which is coaxially connected to it, to rotate synchronously. Supported by the first support seat 10, the transmission shaft 9 further drives the coaxially connected wheel 11 to rotate in a circular motion. During this circular motion, the wheel 11 causes the active rod 12, which is rotatably connected to it, to undergo eccentric displacement. This eccentric displacement of the active rod 12 pulls and rotates the connecting rod 13, which is rotatably connected to it. The connecting rod 13 then oscillates spatially and transmits a pushing and pulling force to the slider 14, which is rotatably connected to it. Under the pushing and pulling force of the connecting rod 13, the slider 14 is constrained by the linear trajectory of the second support seat 15 and can only reciprocate vertically along the second support seat 15, thus completing the mechanical conversion from rotational power to vertical reciprocating power.
[0037] Next, the vertically reciprocating slider 14 drives one end of the rotatably connected rocker arm 16 to move up and down. Driven by this, the rocker arm 16 swings around the third support 17 as a fulcrum, exerting the power reversal effect of the lever. The swing of the other end of the rocker arm 16 then pushes and pulls the rotatably connected slide rod 18. The slide rod 18 is limited and guided by the fourth support 19, converting the swing of the rocker arm 16 into a lateral reciprocating motion along the fourth support 19. The laterally displaced slide rod 18 drives the connecting rod 20 to move laterally within the first slot 21 and the second slot 27. Finally, the connecting rod 20 forces the spoiler 22 located outside the housing 2 to swing laterally back and forth in the obstructed area.
[0038] During the aforementioned transmission process, the protective shell 23 physically isolates the internal transmission components from the suction airflow carrying smoke and dust within the first cavity 3. Simultaneously, this transmission structure causes a physical linkage between the swinging motion of the baffle 22 and the flow field within the first cavity 3: when the amount of smoke generated during welding increases, leading to a corresponding increase in the suction load of the negative pressure suction component and the suction pressure difference within the first cavity 3, the directional airflow velocity entering the air intake component 4 increases accordingly. This accelerated airflow directly drives the turbine fan 8 to increase its rotational speed, thereby accelerating the operation of the internal transmission components and ultimately proportionally increasing the lateral reciprocating swinging frequency of the external baffle 22. This structure achieves a dynamic physical linkage where the more smoke generated, the greater the suction force, and the higher the lateral displacement frequency of the baffle 22. The physical dispersion frequency increases accordingly with the increase in smoke accumulation, improving the operator's field of vision. Example
[0039] As attached Figure 2 and attached Figure 4 As shown, the difference from Embodiment 1 is that the top wall of the first cavity 3 has several through holes 5. Considering that the smoke source is located at the front side of the housing 2, the through holes 5 are all designed at an angle, and their extension direction is inclined towards the smoke accumulation area outside the housing 2. The air inlet assembly 4 includes several air inlets arranged in a circular array around the fixed shaft 7 on the side wall of the first cavity 3, and each air inlet is equipped with a filter screen. Due to the presence of the first slot 21, in order to prevent external air from entering from non-designed areas, a sealing gasket that slides and fits against the outer surface of the housing 2 is fitted on the outer surface of the connecting rod 20. The length and width of the sealing gasket are both greater than the length and width of the first slot 21.
[0040] The specific implementation process is as follows: When the negative pressure suction component is activated, air enters the first cavity 3 evenly through the circular array of air inlets, forming an annular airflow field surrounding the turbine fan 8. As the air enters, the filter physically intercepts large particles and splashes.
[0041] If the through hole 5 is designed vertically, it will not be conducive to the capture of smoke on the opposite side. The oblique design of the through hole 5 makes it easier for the air with smoke to be drawn into the first cavity 3 according to the angle of the oblique through hole 5 on the top wall. The oblique design reduces the path resistance of the smoke in front entering the first cavity 3.
[0042] Furthermore, the sealing gasket slides synchronously with the lateral movement of the connecting rod 20, continuously shielding the gap in the first slot 21 on the top wall of the first cavity 3, preventing the negative pressure airflow inside the first cavity 3 from leaking out through the first slot 21. Simultaneously, a filter screen is used to filter large particles of spatter and welding slag from the intake air and smoke, preventing large particles of spatter or welding slag from being drawn into the first cavity 3 by negative pressure. This avoids hard impurities from jamming or wearing down the internal transmission components and turbine fan 8, enhancing the safety of the device's operation. Example
[0043] This embodiment provides a convenient welding method based on the aforementioned convenient welding device, comprising the following steps: Step 1, Welding Preparation and Arc Initiation: Align the welding torch execution assembly 1 with the workpiece to be welded, and control the shielding gas supply assembly, cooling assembly and wire feeding assembly through the welding host assembly to deliver shielding gas and welding wire to the welding torch execution assembly 1 and perform circulating cooling, triggering the welding arc to generate a weld pool and start the welding operation; in this step, the welding host assembly coordinates the supply of shielding gas, coolant and welding wire, and establishes stable basic welding conditions.
[0044] Step 2, Smoke Dispersion and Collection: During the process of maintaining the welding arc, circulating cooling and wire feeding, the negative pressure suction assembly is activated to generate a suction negative pressure inside the first cavity 3. The turbine fan 8 rotates, driving the connecting rod 20 to move laterally, thereby causing the baffle plate 22, which is fixedly connected to the connecting rod 20, to swing laterally back and forth, continuously dispersing the smoke cloud gathered above the molten pool. The dispersed smoke is drawn into the first cavity 3 under the action of suction negative pressure and discharged through the port 6. Under this continuous operation, due to the physical linkage between the suction airflow velocity and the components, the more smoke is generated, the greater the frequency of the lateral back and forth movement of the external baffle plate 22, thereby improving the degree of physical dispersion of the smoke cloud.
[0045] Step 3, Welding Arc Termination and Shutdown: When the workpiece to be welded is completed, the welding host assembly stops wire feeding and extinguishes the welding arc. The shielding gas supply is stopped after a delay. After the remaining fumes are completely discharged from port 6, the negative pressure suction assembly and cooling assembly are shut off, ending the welding operation. This step executes the wire stopping, arc extinguishing, and delayed gas shut-off process.
[0046] Steps one through three above convert and apply the fluid kinetic energy of the negative pressure airflow, completing a complete smoke removal and turbulence closure loop while ensuring the operation of the core welding process, thus purifying the welding field of vision.
[0047] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.
Claims
1. A portable welding device, comprising a mobile cart, wherein the mobile cart is equipped with a welding system for performing welding operations and generating suction negative pressure, and the output end of the welding system is equipped with a welding torch execution component (1) for outputting a welding arc, characterized in that, The welding torch execution assembly (1) has a housing (2) on its outer side. A first cavity (3) is provided inside the housing (2). A fixed shaft (7) is fixedly connected to the side wall of the first cavity (3). A turbine fan (8) is rotatably connected to the side wall of the fixed shaft (7). An air intake assembly (4) corresponding to the turbine fan (8) is provided on the side wall of the first cavity (3). A transmission assembly is coaxially connected to the turbine fan (8). A first slot (21) is provided on the top wall of the first cavity (3). A connecting rod (20) is provided through the first slot (21) and extends to the outside of the housing (2). A baffle plate (22) is fixedly connected to the other end of the connecting rod (20). A passage (6) communicating with the welding system is provided on the side wall of the first cavity (3). The transmission assembly is used to convert the rotational motion of the turbine fan (8) into the lateral motion of the connecting rod (20).
2. The portable welding device according to claim 1, characterized in that, The welding system includes a welding host assembly for providing welding power and main control, a cooling assembly for circulating cooling, a wire feeding assembly for conveying welding wire, a shielding gas source assembly for providing welding shielding gas, and a negative pressure suction assembly for generating suction negative pressure.
3. The portable welding device according to claim 2, characterized in that, The first cavity (3) is provided with a protective shell (23). The protective shell (23) is connected to a first support rod (25) and a second support rod (26) on both sides, which are fixedly connected to the inner wall of the first cavity (3). The protective shell (23) is provided with a second cavity (24), and the transmission assembly is located in the second cavity (24).
4. The portable welding device according to claim 3, characterized in that, The transmission assembly includes a shaft assembly for transmitting power, a drive assembly for converting rotational power into vertical reciprocating power, and a reversing assembly for converting vertical reciprocating power into lateral reciprocating displacement. The shaft assembly includes a drive shaft (9) coaxially connected to the turbine fan (8). The other end of the drive shaft (9) extends into the second cavity (24). The side wall of the drive shaft (9) is rotatably connected to a first support seat (10) fixedly connected to the bottom wall of the second cavity (24).
5. The portable welding device according to claim 4, characterized in that, The drive assembly includes a wheel (11) coaxially connected to the end of the drive shaft (9) away from the turbine fan (8), the wheel (11) is rotatably connected to a drive rod (12), the other end of the drive rod (12) is rotatably connected to a connecting rod (13), the other end of the connecting rod (13) is rotatably connected to a slider (14), and the side wall of the slider (14) is slidably connected to a second support seat (15) fixedly connected to the top wall of the second cavity (24).
6. The portable welding device according to claim 5, characterized in that, The reversing assembly includes a rocker arm (16) rotatably connected to the slider (14), a third support seat (17) rotatably connected to the middle of the rocker arm (16) and fixedly connected to the side wall of the second cavity (24), a slide rod (18) rotatably connected to the other end of the rocker arm (16), a second slot (27) is provided on the top wall of the second cavity (24), a connecting rod (20) is connected to the other end of the slide rod (18) through the second slot (27), and a fourth support seat (19) fixedly connected to the top wall of the second cavity (24) is slidably connected to the side wall of the slide rod (18).
7. The portable welding device according to claim 6, characterized in that, The top wall of the first cavity (3) has several through holes (5), all of which are designed at an angle.
8. The portable welding device according to claim 7, characterized in that, The air intake assembly (4) includes several air inlets arranged in a circular array on the side wall of the first cavity (3) with the fixed shaft (7) as the center, and each air inlet is equipped with a filter screen.
9. The portable welding device according to claim 8, characterized in that, A sealing gasket is fitted on the outer surface of the connecting rod (20) and slides against the outer surface of the housing (2). The length and width of the sealing gasket are both greater than the length and width of the first groove (21).
10. A convenient welding method, based on the convenient welding apparatus according to any one of claims 1-9, characterized in that, Includes the following steps: Step 1, Welding preparation and arc initiation: Align the welding torch execution assembly (1) with the workpiece to be welded, control the shielding gas source assembly, cooling assembly and wire feeding assembly through the welding host assembly to deliver shielding gas and welding wire to the welding torch execution assembly (1) and perform circulating cooling, trigger the welding arc to generate a weld pool, and start the welding operation; Step 2, Smoke dispersion and collection: During the process of maintaining the welding arc, circulating cooling and wire feeding, the negative pressure suction assembly is turned on to generate suction negative pressure inside the first cavity (3). The turbine fan (8) rotates and drives the connecting rod (20) to move laterally, so that the baffle plate (22) fixedly connected to the connecting rod (20) swings laterally back and forth, continuously dispersing the smoke cloud gathered above the molten pool. The dispersed smoke is sucked into the first cavity (3) under the action of suction negative pressure and discharged through the port (6). Step 3, welding arc termination and shutdown: When the workpiece to be welded is completed, the welding host component stops feeding wire and extinguishes the welding arc, and the protective gas is stopped after a delay. After the remaining fumes are completely discharged from the port (6), the negative pressure suction component and the cooling component are turned off to end the welding operation.