Dust removal device and welding equipment

Abstract

This application provides a dust removal device and welding equipment, relating to the field of welding technology. The main body of the dust removal device includes a dust removal chamber and an air inlet duct and an exhaust duct communicating with the dust removal chamber. The main body also includes an air inlet and a laser inlet communicating with the air inlet duct, and an exhaust outlet communicating with the exhaust duct. A base is connected to the main body and includes a first channel communicating with the dust removal chamber. A graphite pressing block is detachably connected to the base. The graphite pressing block has a second channel communicating with the first channel. The second channel is coaxially arranged with the first channel, and an opening is provided at the end of the second channel facing away from the first channel. The opening is used to press against the welding area. The welding area and the laser inlet are arranged opposite to each other along a first direction. The graphite pressing block in the dust removal device of this application facilitates the cleaning of welding slag on the inner wall of the pressing block and helps to improve the dust removal effect.

Description

Technical Field

[0001] This application relates to the field of welding technology, and in particular to a dust removal device and welding equipment. Background Technology

[0002] Copper is widely used in electronics, automotive, and aerospace industries due to its excellent thermal and electrical conductivity. However, copper absorbs less than 10% of infrared laser light, requiring high power for laser welding. High-power laser beams can cause localized vaporization of the copper, resulting in severe weld spatter and posing a significant risk to products and equipment.

[0003] The dust removal device in the related technology uses a negative pressure device to suck away welding slag, reducing the impact of welding slag on products and workstations. The dust removal device also includes a pressure block connected to the negative pressure device. The pressure block has a channel inside that connects to the negative pressure device. One end of the channel opening of the pressure block covers the welding workstation, and the other end connects to the negative pressure device. The pressure block can prevent gaps between the dust removal device and the workstation surface, thus preventing welding slag from escaping through the gaps.

[0004] However, the welding slag adhering to the inner wall of the pressing block in the dust removal device mentioned above is not easy to clean, which affects the dust removal effect and service life of the dust removal device. Summary of the Invention

[0005] This application provides a dust removal device and welding equipment to solve the technical problem in the above-mentioned related technologies that the welding slag adhering to the inner wall of the pressing block is not easy to clean, which affects the dust removal effect and service life of the dust removal device.

[0006] To achieve the above objectives, the embodiments of this application provide the following technical solutions:

[0007] A first aspect of this application provides a dust removal device, comprising:

[0008] The main body includes a dust removal chamber and an air inlet duct and an air outlet duct connected to the dust removal chamber. The main body also includes an air inlet and a laser inlet connected to the air inlet duct, and an air outlet connected to the air outlet duct.

[0009] A base connected to the main body, the base including a first channel communicating with the dust removal chamber;

[0010] A graphite pressing block is detachably connected to the base. The graphite pressing block has a second channel communicating with the first channel. The second channel is coaxially arranged with the first channel. The end of the second channel facing away from the first channel has an opening for pressing against the welding area. The welding area is arranged opposite to the laser inlet along a first direction.

[0011] This application provides a dust removal device. This technical solution constructs a closed dust removal system through the coordinated design of the main body, base, and graphite pressure block. The dust removal chamber of the main body serves as the core area for collecting welding slag. The air inlet and exhaust ducts form an airflow channel. The combined design of the air inlet and laser inlet ensures both laser penetration and airflow circulation. The first channel of the base and the second channel of the graphite pressure block are coaxially arranged to ensure the straightness of the airflow path and avoid turbulence interfering with laser transmission. The graphite pressure block adopts a detachable connection method, which facilitates replacement and maintenance, and utilizes the high melting point (over 3000℃) of graphite material to maintain structural stability under the impact of high-temperature welding slag. The graphite material does not react with the welding slag, i.e., molten copper, exhibits poor wettability, and only has weak intermolecular forces with the welding slag, making it difficult for the molten welding slag to adhere and easy to detach. The relative position design of the laser inlet and the welding area ensures that the laser beam can penetrate the dust removal device and act on the welding area. At the same time, the negative pressure of the exhaust duct will promptly remove the spattered welding slag. Combined with the airflow from the air inlet, it prevents the welding slag from flying towards the laser inlet and contaminating the laser equipment, forming a dual protection mechanism of physical isolation and dynamic dust removal.

[0012] In one possible implementation, the density of the graphite briquettes is greater than or equal to 1.9 g / cm³. 3 ;

[0013] The hardness of the graphite block (300) is greater than or equal to 70 HSD;

[0014] The particle size of the graphite briquettes (300) is less than or equal to 8 μm;

[0015] The ash content of the graphite briquettes (300) is less than or equal to 50 ppm;

[0016] The porosity of the graphite briquettes (300) is less than or equal to 11%.

[0017] One possible implementation also includes a connection structure;

[0018] One end of the connection structure is detachably connected to the base, and the other end is detachably connected to the graphite block.

[0019] In one possible implementation, the connection structure is a connecting flange, which has a third channel inside. The connecting flange is connected to the base via a first threaded component, and the connecting flange is connected to the graphite block via a second threaded component.

[0020] The third channel connects the first channel and the second channel.

[0021] In one possible implementation, the connecting flange has a positioning part at one end facing the first channel, and the inner wall of the first channel has a positioning groove that is adapted to the positioning part.

[0022] In one possible implementation, the positioning part is an annular flange extending toward the first channel and around the edge of the third channel, the positioning groove is an annular groove, and the flange is disposed within the annular groove.

[0023] In one possible implementation, a protective gas input device is also included, which is connected to the first channel and / or the second channel, and is used to supply protective gas to the welding zone.

[0024] In one possible implementation, the base has a first air passage within its side wall, the first air passage having an air inlet for communicating with a protective gas input device.

[0025] The graphite block has a second air passage in its side wall that communicates with the first air passage. The second air passage has an air outlet that is directed toward the welding area corresponding to the opening and is used to input protective gas into the welding area.

[0026] In one possible implementation, the air intake duct is coaxially arranged with the first channel and the second channel.

[0027] In one possible implementation, the axial direction of the exhaust duct intersects the axial direction of the intake duct.

[0028] In one possible implementation, the air inlet and the laser inlet are the same inlet.

[0029] In one possible implementation, the dust removal device further includes a negative pressure generating structure;

[0030] The negative pressure generating structure is connected to the exhaust port.

[0031] A second aspect of this application provides a welding apparatus comprising a laser emitting device and a dust removal device as described above; the laser emitting device emits laser light through the laser inlet into the second channel via the air inlet duct. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of a dust removal device provided in an embodiment of this application;

[0034] Figure 2 A simulated flow direction diagram of welding slag particles when welding slag is sucked in a dust removal device provided in this application embodiment;

[0035] Figure 3 This is a schematic diagram of a base and a graphite pressing block provided in an embodiment of this application.

[0036] Explanation of reference numerals in the attached figures:

[0037] 100. Main body;

[0038] 110. Dust removal chamber; 120. Air inlet duct; 130. Exhaust duct; 140. Air inlet;

[0039] 150. Laser inlet; 160. Exhaust vent;

[0040] 200. Base;

[0041] 210, First channel; 220, Positioning groove; 230, First air passage; 240, Air inlet;

[0042] 300. Graphite briquettes;

[0043] 310. Second passage; 320. Opening; 330. Second airway; 340. Air outlet;

[0044] 400. Connection structure;

[0045] 410. Third channel; 420. Positioning unit; 430. Third airway. Detailed Implementation

[0046] As described in the background section, the welding slag adhering to the inner wall of the pressing block in the dust removal device of the aforementioned related technologies is not easy to clean, which affects the dust removal effect of the dust removal device.

[0047] The reason for this problem is that in the existing technology, the pressing block is made of metal, and the temperature of the copper welding slag is around 1000℃. On the one hand, it is easy to melt the metal pressing block and form a weld; on the other hand, the metal materials are easy to form a strong metal bond at high temperature, and the wettability is good. The bonding force between the two is relatively strong, which makes it difficult to clean the welding slag on the metal pressing block. When grinding the welding slag on the metal pressing block, the wear of the metal pressing block will be relatively large, which will affect the service life of the metal pressing block.

[0048] To address the aforementioned issues, this application provides a dust removal device and welding equipment. The dust removal device, through the coordinated design of the main body, base, and graphite pressing block, constructs a closed dust removal system. The dust removal chamber of the main body serves as the core area for collecting welding slag. The air inlet and exhaust pipes form an airflow channel, and the combination design of the air inlet and laser inlet ensures both laser penetration and airflow circulation. The first channel of the base and the second channel of the graphite pressing block are coaxially arranged to ensure the straightness of the airflow path and avoid turbulence interfering with laser transmission. The graphite pressing block adopts a detachable connection method, which facilitates replacement and maintenance, and utilizes the high melting point (over 3000℃) of graphite material itself to maintain structural stability under the impact of high-temperature welding slag. The graphite material does not react with the welding slag, i.e., molten copper, exhibiting poor wettability, ensuring that the graphite pressing block is not damaged during use and slag cleaning. The inner wall of the pressing block and the welding slag are only subject to weak intermolecular forces, making it difficult for molten welding slag to adhere and easy to detach. The relative position design of the laser inlet and the welding area ensures that the laser beam can penetrate the dust removal device and act on the welding area. At the same time, the negative pressure of the exhaust duct will promptly remove the spattered welding slag. Combined with the airflow from the air inlet, it prevents the welding slag from flying towards the laser inlet and contaminating the laser equipment, forming a dual protection mechanism of physical isolation and dynamic dust removal.

[0049] To make the above-mentioned objectives, features, and advantages of the embodiments of this application more apparent and understandable, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0050] refer to Figure 1 , Figure 2 and Figure 3 This application provides a dust removal device, which may include a main body 100, a base 200 and a graphite pressing block 300.

[0051] The main body 100 may include a dust removal chamber 110 and an air inlet duct 120 and an exhaust duct 130 connected to the dust removal chamber 110. The main body 100 may also include an air inlet 140 and a laser inlet 150 connected to the air inlet duct 120, and an exhaust outlet 160 connected to the exhaust duct 130. The main body 100 serves as the core load-bearing structure of the entire device, and its dust removal chamber 110 is designed primarily for collecting welding slag and guiding airflow. In practical applications, the dust removal chamber 110 can be made of metal or high-temperature resistant composite materials, such as stainless steel or copper alloy, to meet the requirements of high-temperature environments. The connection design of the air inlet duct 120 and the exhaust duct 130 aims to form a stable airflow path, thereby achieving effective removal of welding slag. The combined design of the air inlet 140 and the laser inlet 150 can be achieved through a single opening or through two independent openings 320, the main purpose of which is to maintain airflow circulation while ensuring laser penetration.

[0052] The base 200 is connected to the main body 100, and the base 200 may include a first channel 210 communicating with the dust removal chamber 110. The first channel 210 of the base 200, communicating with the dust removal chamber 110, serves to introduce airflow from the main body 100 into the interior of the graphite block 300. In practical applications, the first channel 210 can be implemented through a straight-through design or through a guide structure with a certain curvature angle, such as using an arc transition or a stepped transition, to optimize the airflow characteristics.

[0053] The graphite pressing block 300 is detachably connected to the base 200. The graphite pressing block 300 has a second channel 310 communicating with the first channel 210. The second channel 310 is coaxially arranged with the first channel 210. The end of the second channel 310 facing away from the first channel 210 has an opening 320 for pressing against the welding area. The welding area and the laser inlet 150 are along a first direction (e.g., ...). Figure 1 The Y-direction is set relative to the setting.

[0054] In this design, the second channel 310 of the graphite block 300 is coaxially arranged with the first channel 210 to ensure the straightness of the airflow path and avoid interference from turbulence on laser transmission. The opening 320 of the graphite block 300 connects to the welding area, and its shape can be adjusted according to actual welding requirements, such as circular, elliptical, or polygonal, to adapt to the shape characteristics of different welded parts. As a preferred embodiment, the material of the graphite block 300 can be high-purity graphite, carbon fiber reinforced graphite, or graphite-based composite materials. These materials all have high melting points and low wettability, which can effectively reduce the adhesion of weld slag.

[0055] This technical solution constructs a closed dust removal system through the coordinated design of the main body 100, base 200, and graphite pressing block 300. The dust removal chamber 110 of the main body 100 serves as the core area for collecting welding slag. The air inlet duct 120 and exhaust duct 130 form an airflow channel. The combined design of the air inlet 140 and laser inlet 150 ensures both laser penetration and airflow circulation. The first channel 210 of the base 200 and the second channel 310 of the graphite pressing block 300 are coaxially arranged to ensure the straightness of the airflow path and avoid turbulence interfering with laser transmission. The graphite pressing block 300 adopts a detachable connection method, which facilitates replacement and maintenance, and utilizes the high melting point (over 3000℃) of graphite material to maintain structural stability under the impact of high-temperature welding slag. Only weak intermolecular forces exist between the inner wall of the pressing block and the welding slag, making it difficult for molten welding slag to adhere and easy to detach. The relative position design between the laser inlet 150 and the welding area ensures that the laser beam can penetrate the dust removal device and act on the welding area. At the same time, the negative pressure of the exhaust duct 130 removes the spatter in time, and the airflow from the air inlet 140 prevents the spatter from flying to the laser inlet 150 and contaminating the laser equipment, forming a dual protection mechanism of physical isolation and dynamic dust removal.

[0056] refer to Figures 1 to 3 In some embodiments, the density of the graphite briquettes 300 is greater than or equal to 1.9 g / cm³. 3 For example, the density of graphite briquettes 300 can be 1.90 g / cm³. 3 1.92g / cm 3 1.95g / cm 3 .

[0057] The hardness of graphite briquettes 300 is greater than or equal to 70HSD. For example, the hardness of graphite briquettes 300 can be 70HSD, 72HSD, 74HSD or 75HSD.

[0058] The particle size of the graphite briquettes 300 is less than or equal to 8 μm. For example, the graphite particle size of the graphite briquettes 300 can be 8 μm, 7 μm, 6 μm or 5 μm.

[0059] The ash content of graphite briquettes 300 is less than or equal to 50 ppm. For example, the ash content of graphite briquettes 300 can be 50 ppm, 48 ppm, 45 ppm, or 40 ppm. When the ash content is less than or equal to 50 ppm, the purity of graphite briquettes 300 can reach 99%.

[0060] The porosity of graphite briquettes 300 is less than or equal to 11%. For example, the porosity of graphite briquettes 300 can be 11%, 10%, or 9%.

[0061] The above graphite preparation parameters are intended to ensure the mechanical properties of graphite briquettes. Specifically, the compressive strength is greater than or equal to 135 MPa, the flexural strength is greater than or equal to 60 MPa, and the elastic modulus is greater than or equal to 13 GPa.

[0062] In practical implementation, density can be the mass per unit volume of the material, which can be achieved by increasing the pressing pressure of the graphite material or optimizing the calcination process. For the graphite briquette 300 in this application, it is formed by static pressing at a pressure exceeding 300 MPa, followed by high-temperature calcination and impregnation processes to achieve the required density of the graphite blank. Hardness can be understood as the material's ability to resist localized deformation, which can be improved by adjusting the graphitization temperature and time parameters, as well as subsequent acid washing and chlorination treatments. Purity can be the proportion of carbon in the graphite material, which can be purified by vacuum degassing and other purification processes to remove impurities and ensure high chemical stability of the material.

[0063] This technical solution systematically addresses the issues of material strength and chemical stability by limiting core parameters such as density, hardness, particle size, ash content, and porosity of graphite briquettes 300. The density is greater than or equal to 1.9 g / cm³. 3 The parameter settings significantly reduce the internal porosity of the graphite material, thereby improving its overall density. This enhances the material's resistance to mechanical impact and reduces the possibility of weld slag penetrating into the material's interior. The requirement of a hardness greater than or equal to 70 HSD ensures that the graphite block 300 maintains its structural integrity when subjected to high-speed impacts from weld slag, while preventing excessive wear on the material surface due to friction when cleaning with flexible tools such as non-woven fabrics. The purity requirement of greater than or equal to 99% fundamentally weakens the tendency for chemical reaction between the material surface and molten copper weld slag by removing metallic impurities and other active components from the graphite. This high purity characteristic, combined with the inherent non-metallic properties of graphite, results in only extremely weak intermolecular forces between the weld slag and the block, thus achieving easy peeling of the weld slag. The synergistic effect of these three parameters ensures the structural stability of the block under extreme working conditions and maintains the low bonding strength between the material and the weld slag, ultimately achieving the technical effect of extending service life and reducing maintenance costs.

[0064] refer to Figures 1 to 3 In some embodiments, the dust removal device may include a connecting structure 400, one end of which is detachably connected to a base 200 and the other end of which is detachably connected to a graphite block 300.

[0065] In practical implementation, the connecting structure 400 can be a transitional component for achieving mechanical connection, which can be implemented using flanges, snap-fit ​​connections, or threaded fasteners. A detachable connection is a connection method that facilitates assembly and maintenance, and can be achieved through bolts, pins, or quick-release snap-fit ​​structures. The purpose of introducing this connecting structure 400 is to avoid damage caused by directly clamping the graphite block 300, while improving assembly efficiency and stability.

[0066] This solution addresses the damage caused by direct clamping during block replacement by introducing a connecting structure 400 as a transition component between the robotic arm and the graphite block 300. Specifically, one end of the connecting structure 400 is detachably connected to the base 200, and the other end is detachably connected to the graphite block 300. This double-end detachable design allows the robotic arm to clamp only the connecting structure 400 itself during operation, avoiding direct contact with the graphite block 300. Since graphite, despite its high hardness, is also brittle, uneven force during clamping can easily lead to localized stress concentration. The connecting structure 400 transfers the clamping force transmission path from the block body to the metal connecting structure 400, utilizing its higher toughness to disperse the clamping pressure.

[0067] The detachable connection method (such as thread, snap-fit, etc.) between the connecting structure 400 and the base 200 or the graphite pressure block 300 ensures the stability of the assembly and facilitates quick disassembly and assembly, reducing the technical difficulty of replacement operations, thereby extending the service life of the pressure block and improving the equipment maintenance efficiency.

[0068] refer to Figures 1 to 3 In some embodiments, the connecting structure 400 is a connecting flange, the connecting flange has a third channel 410 inside, the connecting flange is connected to the base 200 through a first threaded part, the connecting flange is connected to the graphite pressure block 300 through a second threaded part, and the third channel 410 connects the first channel 210 and the second channel 310.

[0069] In practical implementation, the connecting flange can be a ring-shaped connector made of stainless steel, copper alloy, or other metals to ensure sufficient mechanical strength and corrosion resistance. The third channel 410 is a hollow structure penetrating the connecting flange; its cross-sectional shape can be polygonal, circular, elliptical, or other geometry adapted to airflow transmission, aiming to maintain the continuity of the airflow path and reduce flow resistance. The first and second threaded fittings are used to achieve detachable connections between the connecting flange and the base 200 and the graphite pressure block 300, respectively. These connections can be made using standard bolts, screws, or custom threaded fittings, providing reliable connection strength and facilitating frequent replacement operations.

[0070] A connecting flange is used as the core carrier of the connecting structure 400. Threaded fasteners enable a detachable connection at both ends, ensuring connection strength while facilitating quick replacement. The annular structure of the connecting flange can withstand radial stress during robotic gripping, preventing structural damage caused by localized stress concentration. The first threaded component secures the connecting flange to the base 200, forming a stable base support. The second threaded component locks the connecting flange to the graphite pressure block 300, ensuring reliable connection under high-temperature welding slag conditions. The third channel 410, a hollow structure penetrating the connecting flange, forms a coaxial and continuous airflow channel with the first channel 210 of the base 200 and the second channel 310 of the graphite pressure block 300. This maintains smooth dust removal airflow and avoids interference from the flange thickness on the airflow path. Compared to snap-fit ​​or welded structures, threaded connections maintain connection accuracy during frequent disassembly and assembly, while reducing maintenance costs. The planar sealing characteristics of the flange effectively prevent airflow leakage.

[0071] refer to Figures 1 to 3 In some embodiments, the end of the connecting flange facing the first channel 210 has a positioning part 420, and the inner sidewall of the first channel 210 has a positioning groove 220 adapted to the positioning part 420.

[0072] The positioning part 420 can be a structural component used to achieve pre-positioning between the connecting flange and the base 200. It can be implemented using an annular flange, multiple protrusions, or other geometric shapes that can achieve axial limiting. The positioning groove 220 is a recessed structure that mates with the positioning part 420. It can be implemented using an annular groove, multiple grooves, or other geometric spaces that can accommodate the positioning part 420. The purpose of this positioning structure is to provide accurate initial alignment before threaded connection, avoiding thread engagement problems caused by assembly deviations.

[0073] This technical solution achieves the pre-positioning function of the connecting flange and the base 200 by setting a matching structure between the positioning part 420 and the positioning groove 220. When the connecting flange is inserted into the base 200, the positioning part 420 first enters the positioning groove 220 to form an axial limit. This mechanical limiting effect can effectively prevent the flange from tilting or shifting during the thread tightening process, thereby ensuring that the threaded parts can be smoothly engaged.

[0074] This positioning structure, together with the threaded connection, forms a dual constraint. It retains the advantage of easy disassembly of the threaded connection while improving the stability of the connection through mechanical positioning. It is particularly suitable for working conditions that require frequent replacement of the graphite block 300.

[0075] refer to Figures 1 to 3 In some embodiments, the positioning part 420 is an annular flange extending toward the first channel 210 and around the edge of the third channel 410, and the positioning groove 220 is an annular groove, with the flange disposed in the annular groove.

[0076] The annular groove can be a recessed structure adapted to the annular flange. It can be formed by machining the inner wall of the first channel 210 of the base 200. The purpose is to provide a stable embedding space for the flange, ensuring rapid alignment and maintaining perpendicularity during assembly. The third channel 410 can be the airflow path inside the connecting flange for connecting the first channel 210 and the second channel 310. Its design must meet the requirements of gas flow and provide a structural basis for the extension of the annular flange.

[0077] This design, by incorporating an annular flange (positioning part 420) that mates with an annular groove, enables precise circumferential engagement between the connecting flange and the base 200. The annular flange's extension along the edge of the third channel 410 ensures the positioning effect is evenly distributed across the entire contact circumference of the flange and base 200, preventing displacement or tilting caused by localized stress concentration. The corresponding design of the annular groove provides a stable embedding space for the flange, ensuring rapid alignment and axial perpendicularity during assembly. This synergistic effect of the annular structure not only improves assembly efficiency but also enhances connection stability through uniform circumferential mechanical engagement. Furthermore, the annular sealing structure may contribute to the sealing of the protective gas passage.

[0078] refer to Figures 1 to 3 In some embodiments, a protective gas input device may also be included, which is connected to the first channel 210 and / or the second channel 310, and is used to deliver protective gas to the welding zone.

[0079] In practical implementation, the protective gas input device can be a device capable of directionally delivering protective gas to the welding area, which can be implemented using structures such as gas pipelines, gas nozzles, or gas distributors. The first channel 210 and the second channel 310 are existing channels in the dust removal system. By connecting the protective gas input device to these channels, the existing structure can be effectively utilized, avoiding the need for additional openings. The purpose of this design is to reduce the complexity of the main body 100 structure while maintaining overall sealing and mechanical strength.

[0080] This technical solution achieves directional delivery of protective gas by setting up a protective gas input device and connecting it to the first channel 210 and / or the second channel 310. This design utilizes the existing dust removal channel structure as the gas delivery path, allowing the protective gas to flow along the connection path between the dust removal chamber 110 and the welding area. This ensures the gas protection effect of the welding area while avoiding the structural complexity caused by setting up a separate gas channel.

[0081] By integrating the protective gas input device with the existing channel, the number of additional openings in the main body 100 structure is reduced, maintaining overall sealing and mechanical strength. Furthermore, the flow direction of the protective gas synergizes with the dust removal airflow, preventing oxidation without affecting the slag extraction efficiency. In addition, this solution reduces manufacturing costs through a shared channel structure and minimizes potential spatial interference issues caused by independent gas pipelines, providing a basis for miniaturized equipment design.

[0082] refer to Figures 1 to 3 In some embodiments, the base 200 has a first air passage 230 in its side wall, and the first air passage 230 has an air inlet 240 for communicating with a protective gas input device. The graphite block 300 has a second air passage 330 in its side wall that communicates with the first air passage 230, and the second air passage 330 has an air outlet 340 for feeding protective gas into the welding area corresponding to the opening 320.

[0083] In practical implementation, the first air passage 230 can be a gas channel located inside the side wall of the base 200. It can be implemented using different channel structures such as straight, zigzag, or spiral. The purpose is to fully utilize the characteristics of the base 200 as a fixed component by embedding the air passage into the side wall of the base 200, thus avoiding the impact of frequent disassembly and assembly on the main air passage. The second air passage 330 can be a gas channel located inside the side wall of the graphite block 300. It can be implemented using a single channel or a multi-branch channel. The purpose is to ensure that the protective gas can accurately cover the welding area, while reducing the maintenance difficulty when replacing the block.

[0084] This technical solution achieves concealed integration of the protective gas delivery path by embedding the gas duct system separately into the side walls of the base 200 and the graphite pressure block 300. The first gas duct 230 on the side wall of the base 200 serves as a fixed-end gas channel; its inlet 240 only needs a single connection with an external protective gas input device to meet long-term usage requirements. This design fully utilizes the structural characteristics of the base 200 as a fixed component, avoiding disturbance to the main gas duct when frequently replacing the pressure block. The second gas duct 330 on the side wall of the graphite pressure block 300 serves as a detachable-end gas channel. Through a sealed connection with the first gas duct 230 of the base 200, a complete gas path is formed. The directional setting of its outlet 340 ensures that the protective gas accurately covers the welding area. This segmented gas duct design not only guarantees the gas protection effect but also reduces the maintenance difficulty during pressure block replacement through structural separation. Specifically, the easily worn air passage interface is placed on the non-consumable base 200, while the air outlet structure that directly acts on the welding area is integrated into the pressure block body. This not only extends the overall service life of the air passage system, but also reduces the pipeline operation steps when replacing the pressure block.

[0085] In some embodiments, if the base 200 is connected to the graphite block 300 via the connecting structure 400, the side wall of the connecting structure 400 may have a third air passage 430 that communicates with the first air passage 230 and the second air passage 330. One end of the third air passage 430 is connected to the first air passage 230, and the other end of the third air passage 430 is connected to the second air passage 330.

[0086] refer to Figures 1 to 3 In some embodiments, the air inlet duct 120 is coaxially arranged with the first channel 210 and the second channel 310.

[0087] This technical solution achieves synergistic optimization of the airflow channel and laser emission path by setting the air inlet duct 120, the first channel 210, and the second channel 310 as a coaxial structure. Specifically, the coaxial design ensures that the incoming airflow flows along the channel axis, avoiding airflow vortices or uneven distribution caused by eccentric settings, thereby improving the directional transport efficiency of welding slag particles. This, combined with the airflow from the air inlet 140, prevents welding slag from flying towards the laser inlet 150 and contaminating the laser equipment. Simultaneously, this design provides a straight channel for laser emission through the air inlet duct 120, allowing the laser to accurately pass through the dust removal device along the axis to reach the welding area, ensuring stable laser energy transmission and avoiding physical interference from structural components on the laser path. This integration of dual functions solves the problem of welding slag residue caused by poor airflow organization in the dust removal system and ensures the stability of the high-power laser welding process.

[0088] refer to Figures 1 to 3 In some embodiments, the axial direction of the exhaust duct 130 intersects the axial direction of the intake duct 120.

[0089] The exhaust duct 130 can be a channel structure for guiding airflow from the dust removal chamber 110 to the outside, and it can be implemented in different forms such as straight, bent, or tapering. The air inlet duct 120 can be a channel structure for introducing external airflow into the dust removal chamber 110, and it can also be implemented in a straight, expanding, or other suitable shape.

[0090] This technical solution reconstructs the gas flow path inside the dust removal chamber 110 from an airflow dynamics perspective by arranging the exhaust duct 130 and the intake duct 120 in an axially intersecting layout. Specifically, the intersecting axial arrangement changes the direct airflow confrontation mode in the traditional coaxial layout, creating an oblique convergence area between the intake and exhaust airflows. This convergence maintains sufficient airflow channel cross-sectional area while reducing the direct impact intensity of the two airflows through angle adjustment, thereby reducing energy loss. At the structural design level, this non-coaxial layout provides more space for the installation of the laser emitting device, avoids physical interference between the duct and optical components, and optimizes the pressure field distribution inside the dust removal chamber 110 by adjusting the intersection angle, making it easier for welding slag particles to concentrate in the exhaust duct 130 along a preset path. This design also indirectly improves the dynamic response characteristics of the dust removal system; when the amount of welding slag spatter changes abruptly, the asymmetric airflow field can establish a new equilibrium state more quickly, reducing the probability of welding slag escape.

[0091] refer to Figures 1 to 3 In some embodiments, the air inlet 140 and the laser inlet 150 are the same inlet. This can be understood as a design scheme that integrates two originally separate functional inlets into a single shared inlet.

[0092] This design achieves a high degree of structural integration by setting the air inlet 140 and laser inlet 150 to the same inlet. This design firstly reduces the number of openings on the main body 100, simplifying its structural design and reducing processing difficulty and manufacturing costs. Secondly, by sharing the inlet, the laser emission path and the airflow channel remain coaxial, avoiding the impact of airflow disturbances that might occur when the components are separated, ensuring that the laser beam can stably reach the welding area along the predetermined path. Simultaneously, this integrated design reduces the number of openings on the main body 100, improving the structure's sealing performance, reducing the risk of weld slag escaping from the openings, and further enhancing the dust removal effect. By integrating the two functions into a single inlet, the internal spatial layout of the dust removal device is also optimized, reserving more space for the arrangement of other functional components.

[0093] refer to ​ In some embodiments, the dust removal device may also include a negative pressure generating structure, which is connected to the exhaust port 160.

[0094] In practical implementation, a negative pressure generating structure refers to a device capable of actively generating and maintaining a stable negative pressure environment. This can be achieved using equipment such as fans, vacuum pumps, or venturi tubes. These devices create a negative pressure zone through mechanical action or fluid dynamics principles, thereby providing driving force for airflow. The purpose of introducing a negative pressure generating structure is to solve the problems of insufficient suction efficiency and poor airflow stability that may result from relying solely on external equipment, ensuring that welding slag in the welding area can be effectively and promptly extracted and discharged.

[0095] This solution integrates a negative pressure generating structure within the dust removal device, forming a direct airflow channel with the exhaust port 160. This allows the negative pressure generating structure to actively generate and maintain a stable negative pressure environment. This design changes the traditional method of relying on external equipment for indirect air extraction. Through the direct action of the built-in structure, it ensures a continuous and uniform airflow at the exhaust port 160, thereby enhancing the suction capacity for welding slag in the welding area. The connectivity design between the negative pressure generating structure and the exhaust port 160 ensures the shortest airflow path to reduce energy loss, and optimizes the airflow direction and velocity distribution through structural matching, ultimately achieving efficient collection and discharge of welding slag. The introduction of this technical feature fundamentally solves the problem of unstable dust removal caused by response delays and pressure fluctuations in external negative pressure equipment.

[0096] This application embodiment also provides a welding device, which may include a laser emitting device and the aforementioned dust removal device. The laser emitting device projects a laser beam through the laser inlet 150 into the second channel 310 via the air inlet duct 120.

[0097] This technical solution integrates a laser emitting device with a dust removal device of a specific structure to form a complete welding system. The laser emitting device projects a laser beam in a straight line into the air inlet duct 120 through the laser inlet 150, ultimately acting on the welding area enclosed by the second channel 310. This design fully utilizes the coaxial layout of the air inlet duct 120 and the channel to ensure the accuracy of the laser path. The combination of the main structure 100 of the dust removal device (including the dust removal chamber 110, air inlet duct 120, and exhaust duct 130) and the graphite pressure block 300 effectively reduces weld slag adhesion through the high-density, high-hardness properties of graphite material, while simultaneously using the negative pressure generated by the exhaust duct 130 to quickly expel the weld slag. The detachable design of the graphite pressure block 300, combined with the connecting structure 400 (such as a flange), facilitates frequent replacement and cleaning while avoiding damage to the pressure block from mechanical operation. The introduction of a protective gas input device further optimizes the welding environment, delivering protective gas through the side wall gas channel to reduce the risk of oxidation. The synergistic effect of the components enables the system to simultaneously achieve efficient dust removal, easy slag removal, equipment protection, and stable welding quality when welding copper materials with high-power lasers.

[0098] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0099] It should be noted that phrases such as "in specific implementations," "in some embodiments," "in this embodiment," and "exemplarily" in the specification indicate that the described embodiments may include specific features, structures, or characteristics, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when describing a specific feature, structure, or characteristic in conjunction with embodiments, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0100] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0101] It should be readily understood that the terms “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0102] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0103] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A dust removal device, characterized in that, include: The main body (100) includes a dust removal chamber (110) and an air inlet duct (120) and an exhaust duct (130) connected to the dust removal chamber (110). The main body (100) also includes an air inlet (140) and a laser inlet (150) connected to the air inlet duct (120), and an exhaust outlet (160) connected to the exhaust duct (130). A base (200) is connected to the main body (100), and the base (200) includes a first channel (210) communicating with the dust removal chamber (110); A graphite pressing block (300) is detachably connected to the base (200). The graphite pressing block (300) has a second channel (310) communicating with the first channel (210). The second channel (310) is coaxially arranged with the first channel (210). The end of the second channel (310) facing away from the first channel (210) has an opening (320). The opening (320) is used to press against the welding area. The welding area and the laser inlet (150) are arranged opposite to each other in a first direction.

2. The dust removal device according to claim 1, characterized in that, The graphite briquettes (300) have a density greater than or equal to 1.9 g / cm³. 3 ; The hardness of the graphite block (300) is greater than or equal to 70 HSD; The particle size of the graphite briquettes (300) is less than or equal to 8 μm; The ash content of the graphite briquettes (300) is less than or equal to 50 ppm; The porosity of the graphite briquettes (300) is less than or equal to 11%.

3. The dust removal device according to claim 1, characterized in that, It also includes a connection structure (400); One end of the connecting structure (400) is detachably connected to the base (200), and the other end is detachably connected to the graphite block (300).

4. The dust removal device according to claim 3, characterized in that, The connecting structure (400) is a connecting flange, the connecting flange has a third channel (410) inside, the connecting flange is connected to the base (200) through a first threaded part, and the connecting flange is connected to the graphite block (300) through a second threaded part; The third channel (410) connects the first channel (210) and the second channel (310).

5. The dust removal device according to claim 4, characterized in that, The connecting flange has a positioning part (420) at one end facing the first channel (210), and the inner sidewall of the first channel (210) has a positioning groove (220) that is adapted to the positioning part (420).

6. The dust removal device according to claim 5, characterized in that, The positioning part (420) is an annular flange extending toward the first channel (210) and around the edge of the third channel (410), and the positioning groove (220) is an annular groove, with the flange disposed in the annular groove.

7. The dust removal device according to claim 1, characterized in that, It also includes a protective gas input device, which is connected to the first channel (210) and / or the second channel (310), and is used to supply protective gas to the welding area.

8. The dust removal device according to claim 7, characterized in that, The base (200) has a first air passage (230) in the side wall, and the first air passage (230) has an air inlet (240) for communicating with a protective gas input device. The graphite block (300) has a second air passage (330) in its side wall that communicates with the first air passage (230). The second air passage (330) has an air outlet (340) which is directed toward the welding area corresponding to the opening (320) and is used to input protective gas into the welding area.

9. The dust removal device according to claim 1, characterized in that, The air inlet duct (120) is coaxially arranged with the first channel (210) and the second channel (310).

10. The dust removal device according to claim 1, characterized in that, The axial direction of the exhaust duct (130) intersects the axial direction of the intake duct (120).

11. The dust removal device according to claim 1, characterized in that, The air inlet (140) and the laser inlet (150) are the same inlet.

12. The dust removal device according to claim 1, characterized in that, The dust removal device also includes a negative pressure generating structure; The negative pressure generating structure is connected to the exhaust port (160).

13. A welding device, characterized in that, It includes a laser emitting device and a dust removal device as described in any one of claims 1 to 12; the laser emitting device emits a laser beam through the laser inlet (150) into the second channel (310) via the air inlet duct (120).

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