Welding dust removal device and laser welding apparatus

Abstract

The application provides a welding dust removal device and a laser welding equipment, and relates to the technical field of laser welding. The welding dust removal device comprises a mounting seat and a dust removal cover. The mounting seat is used for connecting a target piece. The dust removal cover is movably connected to the mounting seat. The dust removal cover is used for covering the side of the target piece. The dust removal cover is provided with a first air suction channel. The dust removal cover is configured to move relative to the mounting seat so that the air inlet end of the first air suction channel is close to the welding point of the target piece. The welding dust removal device and the laser welding equipment improve the dust removal effect in the laser welding process.

Description

Technical Field

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

[0002] Laser welding is a high-precision welding method that uses a high-energy-density laser beam as a heat source and is widely used in industries such as battery manufacturing, automobiles, and electronics.

[0003] Laser welding generates spatter and dust, which not only pollute the working environment but can also affect welding quality and equipment lifespan. Related technologies incorporate an air intake channel on one side of the welding area, using an external suction device to create a negative pressure airflow that draws air towards the welding area during the welding process to capture the spatter and dust.

[0004] However, the dust removal effect during the aforementioned laser welding process is poor. Utility Model Content

[0005] This application provides a welding dust removal device and a laser welding equipment to improve the dust removal effect during the laser welding process.

[0006] In a first aspect, this application provides a welding dust removal device, comprising:

[0007] Mounting bracket, used to connect the target component;

[0008] A dust removal hood is movably connected to the mounting base. The dust removal hood is used to cover the periphery of the target part. The dust removal hood is provided with a first air intake channel for drawing air from inside the dust removal hood.

[0009] The dust cover is configured to move relative to the mounting base so that the air inlet end of the first air intake channel is close to the welding point of the target component.

[0010] As an optional implementation, the dust hood has a receiving cavity inside, and one end of the dust hood along a first direction has an inlet and outlet that communicate with the receiving cavity and is directed toward the target component.

[0011] As an optional implementation, the first suction channel is disposed on one side of the dust collector along the first direction, the first suction channel is connected to the receiving cavity, and the air inlet end of the first suction channel faces the receiving cavity.

[0012] As an optional implementation, the dust hood is further provided with a second air intake channel, the air inlet of the second air intake channel facing the inlet / outlet, and the second air intake channel is used to draw air from inside the dust hood.

[0013] As an optional implementation, in the first direction, the air inlet end of the first air intake channel is farther away from the inlet / outlet than the air inlet end of the second air intake channel.

[0014] As an optional implementation, the dust hood includes a first housing and a second housing connected to each other;

[0015] The first housing is connected to the mounting base, and the first housing covers the outside of the second housing, which is used to surround the target part around the periphery along the first direction;

[0016] There is a gap between the first housing and the second housing, and the gap forms the second air intake channel.

[0017] As an optional implementation, the side wall of the first housing is provided with a third through hole, and the second air intake channel communicates with the third through hole.

[0018] As an optional implementation, the side wall of the first housing has a first through hole, and the side wall of the second housing has a second through hole. The first through hole and the second through hole are coaxial and connected to form the first air intake channel.

[0019] As an optional implementation, in a plane perpendicular to the first direction, there is an angle between the axis of the first through hole and the axis of the third through hole.

[0020] As an optional implementation, the second intake channel is connected to the first intake channel;

[0021] Alternatively, the second intake channel may be isolated from the first intake channel.

[0022] As an optional implementation, a rotating structure is also included, through which the dust cover is rotatably connected to the mounting base.

[0023] As an optional implementation, the rotating structure includes a movable component and a guide component;

[0024] One of the movable component and the guide component is disposed on the mounting base, and the other is disposed on the dust cover. At least a portion of the movable component is movably connected to the guide component. The guide component is used to restrict the movement path of the movable component.

[0025] As an optional implementation, the guide member is disposed on the mounting base, and the guide member is provided with a guide groove;

[0026] The movable component is disposed on the dust removal hood, and the movable component is slidably disposed within the guide groove.

[0027] As an optional implementation, the guide groove is configured as an annular guide groove, which is used to surround the periphery of the target part.

[0028] As an optional implementation, the annular guide groove has an opening;

[0029] Some of the movable parts are located within the annular guide groove, while others extend out of the annular guide groove through the opening and are connected to the dust collector hood.

[0030] As an optional implementation, the movable component is a bearing, which is sleeved on the outside of the dust collector cover.

[0031] As an optional implementation, a drive structure is also included, which is disposed on the mounting base and connected to the dust cover. The drive structure is used to drive the dust cover to rotate relative to the mounting base.

[0032] As an optional implementation, the drive structure includes a first drive component and a transmission component;

[0033] The transmission component is connected to the drive shaft of the first drive component, and the transmission component is also connected to the side wall of the dust collector hood. The first drive component drives the dust collector hood to rotate through the transmission component.

[0034] As an optional implementation, the mounting base includes a clamping element;

[0035] The clamping member has a first surface and a second surface disposed opposite to each other along the first direction, the dust cover is disposed on the first surface, and the second surface is used to abut against the target member.

[0036] As an optional implementation, the clamping member has a clearance hole, one end of which near the first surface communicates with the receiving cavity via the inlet / outlet, and the other end of which near the second surface is directed toward the target member.

[0037] As an optional implementation, the clamping member is further provided with a protective air channel. The air inlet of the protective air channel is used to communicate with a protective air source, and the air outlet of the protective air channel is used to communicate with the clearance hole. The protective air channel is used to introduce protective air into the clearance hole.

[0038] As an optional implementation, the mounting base further includes a fastener for connecting the target component;

[0039] The clamping member is slidably disposed on the fixing member. The clamping member is used to approach the fixing member along a first direction so that the second surface abuts against the target member; or, the clamping member is used to move away from the fixing member along the first direction so that the second surface disengages from the target member.

[0040] As an optional implementation, the mounting base further includes a second driving member having a fixed portion and a movable portion, the movable portion being used to move relative to the fixed portion along the first direction;

[0041] The movable part is connected to the clamping member, and the fixed part is connected to the fixing member.

[0042] As an optional implementation, the fixing part is provided with a guide rail, which extends along the first direction;

[0043] The movable part is equipped with a slider, which is slidably connected to the guide rail.

[0044] Secondly, this application provides a laser welding device, including a laser welding head and any of the above-mentioned welding dust removal devices;

[0045] The dust removal hood of the welding dust removal device is installed around the laser welding head;

[0046] The laser welding head is used to emit a laser beam toward the target part through the dust removal hood.

[0047] The welding dust removal device and laser welding equipment provided in this application include a mounting base and a dust removal hood. The mounting base is used to connect to the target part; the dust removal hood is movably connected to the mounting base and is used to cover the periphery of the target part. The dust removal hood is provided with a first suction channel. By configuring the dust removal hood to be movable relative to the mounting base, the air inlet end of the first suction channel is brought close to the welding point of the target part. By configuring the dust removal hood to be movable relative to the mounting base, the dust removal hood can dynamically respond to changes in the welding position on the target part, ensuring that the air inlet end of the first suction channel can move with the change in the position of the welding point, thereby ensuring that the air inlet end of the first suction channel is always close to the current welding point of the target part. The shortened distance between the air inlet end of the first suction channel and the welding point can ensure sufficient negative pressure adsorption force and airflow velocity, enhancing the capture ability of welding slag and dust splashed from the welding point, and improving the dust removal effect during the welding process. Attached Figure Description

[0048] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0049] Figure 1Schematic diagram of the welding dust removal device provided in the embodiments of this application Figure 1 ;

[0050] Figure 2 Schematic diagram of the welding dust removal device provided in the embodiments of this application Figure 2 ;

[0051] Figure 3 for Figure 1 Top view of the welding dust removal device Figure 1 ;

[0052] Figure 4 for Figure 1 Top view of the welding dust removal device Figure 2 ;

[0053] Figure 5 for Figure 1 Schematic diagram of the connection structure between the dust collector hood and the clamping component of the welding dust removal device Figure 1 ;

[0054] Figure 6 for Figure 1 Schematic diagram of the connection structure between the dust collector hood and the clamping component of the welding dust removal device Figure 2 ;

[0055] Figure 7 for Figure 1 Schematic diagram of the connection structure between the dust collector hood and the clamping component of the welding dust removal device Figure 3 ;

[0056] Figure 8 for Figure 5 Schematic diagram of the structure within the dashed box Figure 1 ;

[0057] Figure 9 for Figure 5 Schematic diagram of the structure within the dashed box Figure 2 .

[0058] Explanation of reference numerals in the attached figures:

[0059] 100. Mounting base;

[0060] 110. Clamping component; 111. Clearance hole; 112. Protective air passage; 113. Connecting plate;

[0061] 120. Fastener; 121. Base plate; 122. Vertical plate; 123. Fixing block;

[0062] 130. Second driving component; 131. Fixed part; 1311. Guide rail; 132. Moving part; 1321. Slider;

[0063] 200. Dust hood; 201. Receiving cavity; 202. Inlet / outlet; 203. First suction channel; 204. Second suction channel;

[0064] 210. First housing; 211. First through hole; 212. Third through hole;

[0065] 220. Second housing; 221. Second through hole;

[0066] 300. Rotating structure;

[0067] 310. Movable items;

[0068] 320. Guide component; 321. Guide groove; 3211. Opening;

[0069] 400. Drive structure;

[0070] 410. First driving component;

[0071] 420. Transmission components;

[0072] 900, target component;

[0073] 910. Outer shell;

[0074] 920. Cover plate.

[0075] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0076] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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 some embodiments of the embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the embodiments of this application.

[0077] In the embodiments of this application, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly for better describing the embodiments of this application and their implementations, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may also be used in some cases to indicate a certain dependency or connection relationship. For those skilled in the art, the specific meaning of these terms in the embodiments of this application can be understood according to the specific circumstances.

[0078] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0079] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the present application described herein can be implemented, for example, in orders other than those illustrated or described herein.

[0080] In this application, the terms "exemplarily" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplarily" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplarily" or "for example" is intended to present the relevant concepts in a specific manner.

[0081] As described in the background section, laser welding generates spatter and dust, which not only pollute the working environment but can also affect welding quality and equipment lifespan. Related technologies typically employ an air intake channel on one side of the welding area, using an external suction device to create a negative pressure airflow that draws air towards the welding area during the welding process to capture the spatter and dust.

[0082] However, since the position of the suction channel is fixed, when welding the target part to a position far away from the suction channel, welding slag and dust may splash outside the effective airflow field of the suction channel, making it difficult for the suction channel to effectively remove dust.

[0083] In view of this, embodiments of this application provide a welding dust removal device and a laser welding equipment. The welding dust removal device includes a mounting base and a dust removal hood. The mounting base is used to connect to a target part. The dust removal hood is movably connected to the mounting base and is used to cover the periphery of the target part. The dust removal hood is provided with a first suction channel. The dust removal hood is configured to move relative to the mounting base so that the air inlet end of the first suction channel is close to the welding point of the target part.

[0084] By designing the dust collector hood to be movable relative to the mounting base, it can dynamically respond to changes in the welding position on the target part. This ensures that the air inlet of the first suction channel moves with the position of the welding point, thus keeping the air inlet of the first suction channel close to the current welding point on the target part. Based on fluid mechanics principles, shortening the distance between the air inlet of the first suction channel and the welding point ensures sufficient negative pressure adsorption and airflow velocity, enhancing the capture ability of welding slag and dust splashing from the welding point and improving the dust removal effect during the welding process.

[0085] The technical solution of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0086] Combination Figure 1 As shown, a first aspect of this application provides a welding dust removal device, including a mounting base 100 and a dust removal hood 200. The mounting base 100 is used to connect a target part 900; the dust removal hood 200 is movably connected to the mounting base 100 and is used to cover the periphery of the target part 900. The dust removal hood 200 is provided with a first air intake channel 203 for drawing air from inside the dust removal hood 200; the dust removal hood 200 is configured to move relative to the mounting base 100 so that the air inlet end of the first air intake channel 203 is close to the welding point of the target part 900.

[0087] Understandably, the mounting base 100 can provide a mounting platform for the target part 900. When the mounting base 100 is connected to the target part 900, it can firmly fix the target part 900, prevent the target part 900 from vibrating or shifting during the welding process, and ensure the effective welding.

[0088] The dust hood 200 is installed around the target part 900 along the first direction Z, thus creating a partially enclosed or semi-enclosed space to protect the surrounding environment of the target part 900. During laser welding of the target part 900, the dust hood 200 can control welding slag and dust particles (hereinafter referred to as particulate matter) generated during welding within the coverage area of ​​the dust hood 200, preventing particulate matter from splashing arbitrarily, polluting the working environment, or even endangering the health of operators.

[0089] However, particles splashed inside the dust hood 200 may adhere to the surface of the welded workpiece or optical lenses, reducing welding quality or even damaging the laser welding equipment.

[0090] By setting a first suction channel 203 on the dust removal hood 200, air can be drawn from inside the dust removal hood 200, generating a negative pressure airflow inside the dust removal hood 200. Particles controlled within the coverage area of ​​the dust removal hood 200 can be captured by the negative pressure airflow and discharged through the first suction channel 203, thus realizing dust removal during the laser welding process.

[0091] Specifically, the dust cover 200 can move relative to the mounting base 100 so that the air inlet end of the first air intake channel 203 is close to the welding point of the target part 900.

[0092] By setting the dust cover 200 to be movable relative to the mounting base 100, the dust cover 200 can dynamically respond to changes in the welding position on the target part 900, so as to ensure that the air inlet end of the first air intake channel 203 can move with the change of the welding point position, thereby ensuring that the air inlet end of the first air intake channel 203 is always close to the current welding point of the target part 900.

[0093] According to the principles of fluid mechanics, the distance between the air inlet end of the first air intake channel 203 and the welding point is shortened, which can ensure sufficient negative pressure adsorption force and airflow velocity, enhance the capture ability of particles splashed from the welding point, and significantly improve the dust removal effect during the welding process.

[0094] Furthermore, since the air inlet of the first air intake channel 203 is close to the welding point, the particles can be directly sucked into the first air intake channel 203 after flying out from the welding point, without passing through the upper surface of the target part 900, thus reducing the possibility of particles settling on the surface of the target part 900.

[0095] Furthermore, since the dust hood 200 is movable, the first suction channel 203 can distribute the dust collection effect evenly over a larger area, reduce blind spots, improve the uneven dust collection effect, and further improve the overall dust collection efficiency.

[0096] It should be noted that the movement of the dust cover 200 relative to the mounting base 100 can be determined based on the welding path on the target part 900.

[0097] For example, when welding a square target part 900 (such as the cover plate 920 and casing 910 of a square battery), the welding path may be straight. The movement of the dust hood 200 on the mounting base 100 can be translational, and the movement trajectory of the dust hood 200 can be straight. The first air intake channel 203 of the dust hood 200 moves with the welding point, and the air intake end of the first air intake channel 203 is always close to the welding point.

[0098] For example, combining Figure 2 , Figure 3 and Figure 4 As shown, when welding a cylindrical target part 900 (such as the cover plate 920 and the outer casing 910 of a cylindrical battery), the welding path is circular, so the dust cover 200 can rotate relative to the mounting base 100 so that the first air intake channel 203 of the dust cover 200 moves with the welding point.

[0099] Furthermore, the rotation axis of the dust hood 200 can coincide with the axis of the cylindrical target part 900 when it rotates. This helps to ensure that the distance between the air inlet end of the first air intake channel 203 and the welding point remains unchanged during the rotation of the dust hood 200, thereby ensuring a continuous and effective dust collection effect.

[0100] For example, the dust cover 200 can move linearly relative to the mounting base 100 under the drive of a guide rail slider mechanism, a linear module mechanism, or a lead screw mechanism. Alternatively, the dust cover 200 can rotate relative to the mounting base 100 under the drive of a hinge structure or a rotating shaft mechanism.

[0101] Combination Figure 5 As shown, in some embodiments, the dust hood 200 has a receiving cavity 201 inside, and one end of the dust hood 200 along the first direction Z has an inlet 202, which communicates with the receiving cavity 201 and is used to face the target component 900.

[0102] Understandably, the inlet / outlet 202, the receiving cavity 201, and the first suction channel 203 can constitute a particulate matter discharge channel, which can ensure the discharge capability of particulate matter during laser welding.

[0103] In practice, the particles generated during the laser welding process will enter the receiving cavity 201 through the inlet 202, and then be captured by the air inlet end of the first air intake channel 203 located on the side of the dust removal hood 200, and then discharged to the outside of the dust removal hood 200 through the first air intake channel 203.

[0104] For example, the cavity 201 can be funnel-shaped, with the inlet 202 located at the small diameter end of the cavity 201 and facing the target 900.

[0105] It should be noted that when welding the target component 900, the generated particles are usually in the form of spots or localized diffusion. The smaller inner diameter of the inlet / outlet 202 facing the welding point of the target component 900 helps to optimize the airflow generated by the first intake channel 203, avoids airflow dispersion due to excessively large diameter, and improves the capture effect of particles.

[0106] Of course, the shape of the receiving cavity 201 can also be other forms, and this application embodiment does not impose any restrictions on this.

[0107] Combination Figure 5 As shown, in some embodiments, the first suction channel 203 is disposed on one side of the dust removal hood 200 along the first direction Z, the air inlet end of the first suction channel 203 faces the receiving cavity 201, and the first suction channel 203 is connected to the receiving cavity 201.

[0108] Understandably, the first air intake channel 203 is located on the side of the dust hood 200 to avoid interference with the laser welding head when it is located at the top of the dust hood 200, or blockage due to particle accumulation when it is located at the bottom of the dust hood 200.

[0109] It should be noted that the first direction Z can be parallel to the geometric features of the target part 900 (such as the axial direction of a cylindrical battery). The first suction channel 203 is located on one side of the dust hood 200 along the first direction Z, which can ensure that the spatial position of the first suction channel 203 when it moves is coordinated with the dynamic process of welding.

[0110] The air inlet of the first air intake channel 203 faces the receiving cavity 201, that is, the negative pressure adsorption force of the first air intake channel 203 is aligned with the inside of the receiving cavity 201. After the splashed particles enter the receiving cavity 201 from the inlet 202, the negative pressure adsorption force of the first air intake channel 203 can carry away these particles, reducing the disorderly collision and settling of particles in the receiving cavity 201.

[0111] The first intake channel 203 is connected to the receiving cavity 201, ensuring that the particulate matter collected from the receiving cavity 201 can be smoothly transported to the external dust removal system.

[0112] It should be noted that there can be multiple first suction channels 203, which can be distributed at intervals around the dust collector hood 200 in the first direction Z. Multiple first suction channels 203 can provide negative pressure adsorption force from multiple directions simultaneously, ensuring the effective collection of particulate matter.

[0113] Combination Figure 6 As shown, in some embodiments, the dust hood 200 is also provided with a second air intake channel 204, the air intake end of the second air intake channel 204 facing the inlet and outlet 202, and the second air intake channel 204 is used to draw air from inside the dust hood 200.

[0114] By additionally providing a second air intake channel 204 on the dust collector 200 and having its air intake end facing the inlet / outlet 202, a negative pressure airflow can be generated near the inlet / outlet 202 to capture particulate matter located near the inlet / outlet 202.

[0115] In practice, the second air intake and the first air intake channel 203 work together to improve the ability to capture and remove particulate matter, thereby improving the dust removal effect during the welding process.

[0116] Combination Figure 5 and Figure 6 As shown, in some embodiments, in the first direction Z, the air inlet end of the first air intake channel 203 is farther away from the inlet / outlet 202 relative to the air inlet end of the second air intake channel 204.

[0117] Understandably, during the welding of the target part 900, some particles with high initial kinetic energy will splash at a high height and enter the cavity 201 through the inlet / outlet 202. Because the air inlet of the first suction channel 203 is located at a high position, it can evacuate the cavity 201, thereby capturing and collecting the particles with high splash speed that enter the cavity 201.

[0118] Some particles with lower initial kinetic energy splash at a lower height, only reaching the vicinity of inlet / outlet 202. Because the second suction channel 204 is positioned lower and can draw air towards inlet / outlet 202, it can capture and collect particles located near inlet / outlet 202, ensuring overall dust removal efficiency.

[0119] The inlet ends of the first suction channel 203 and the second suction channel 204 are arranged along the first direction Z. When particulate matter is generated, the second suction channel 204 can create a negative pressure at the inlet / outlet 202 to draw in some of the particulate matter passing through the inlet / outlet 202; the first suction channel 203 can maintain a negative pressure inside the receiving cavity 201, further drawing in the particulate matter entering the receiving cavity 201. This arrangement can avoid the flow field chaos or dead zones that may be caused by a single suction channel, thus improving the dust removal effect.

[0120] Combination Figure 6As shown, in some embodiments, the dust hood 200 includes a first housing 210 and a second housing 220 connected to each other; the first housing 210 is connected to the mounting base 100, and the first housing 210 covers the outside of the second housing 220, which is used to surround the target 900 along the first direction Z; there is a gap between the first housing 210 and the second housing 220, and the gap forms a second air intake channel 204.

[0121] Specifically, the dust cover 200 consists of two housings, wherein the first housing 210 serves as the outer housing, connecting the second housing 220 and the mounting base 100, and enclosing the second housing 220 within its internal space. The second housing 220 covers the periphery of the target part 900, and the second housing 220 can directly face the high-temperature welding area and spatter.

[0122] There is a gap between the first housing 210 and the second housing 220. This gap is used as the second air intake channel 204, which eliminates the trouble of installing additional pipes on the first housing 210 and the second housing 220. This makes the structure of the second air intake channel 204 compact and strong, and avoids interference, entanglement or damage that may occur when the pipe moves dynamically.

[0123] Understandably, particulate matter generated during the welding of the target component 900 may diffuse in all directions. The second suction channel 204 is formed by the interlayer of the entire dust collector hood 200, and its specific shape can be annular or quasi-annular channel. This allows the suction airflow to be distributed around the second housing 220, thereby forming an annular suction airflow at the inlet and outlet 202, effectively improving the capture effect of particulate matter that diffuses in all directions.

[0124] Combination Figure 6 As shown, in some embodiments, the side wall of the first housing 210 is provided with a third through hole 212, and the second air intake channel 204 is connected to the third through hole 212.

[0125] Understandably, the third through hole 212 is the part that connects the second air intake channel 204 to the external suction system, and the third through hole 212 can be used as the air outlet of the second air intake channel 204.

[0126] In practice, the particulate matter drawn in by the second intake channel 204 can be discharged in time through the third through hole 212 to prevent the second intake channel 204 from becoming blocked.

[0127] Combination Figure 5 As shown, in some embodiments, the side wall of the first housing 210 is provided with a first through hole 211, and the side wall of the second housing 220 is provided with a second through hole 221. The first through hole 211 and the second through hole 221 are coaxial and connected to form a first air intake channel 203.

[0128] A first through hole 211 is opened on the side wall of the first housing 210, and a second through hole 221 is opened on the side wall of the second housing 220, so that the space of the wall thickness of the housing itself can be used to form an air intake channel.

[0129] The first through hole 211 can be used to connect to an external suction system, and the second through hole 221 connects to the receiving cavity 201. The second housing 220 directly faces the welding area, and the second through hole 221 on it serves as the air inlet of the first suction channel 203, which can capture splatter at close range; the first through hole 211 on the first housing 210 serves as a continuation of the first suction channel 203, which can guide the sucked-in particles to the external suction system.

[0130] The coaxial connection between the first through hole 211 and the second through hole 221 helps to reduce airflow resistance and ensure that sufficient negative pressure and airflow velocity are generated near the welding point, thereby significantly improving the dust removal effect.

[0131] It should be noted that, in the first direction Z, the first through hole 211 and the third through hole 212 can be at the same horizontal height, that is, the first through hole 211 and the third through hole 212 are arranged side by side on the side of the dust collector hood 200. This arrangement allows the pipes connected to the first through hole 211 and the third through hole 212 to be installed and fixed using a standardized or centralized structure, which helps simplify the layout of external pipes and facilitates maintenance. Furthermore, positioning and machining multiple through holes at the same height at once also makes the machining of the dust collector hood 200 more convenient.

[0132] Alternatively, in the first direction Z, the opening height of the first through hole 211 can be higher than that of the third through hole 212, meaning that the third through hole 212 is positioned closer to the inlet / outlet 202. This arrangement helps to reduce the length of the second suction channel 204 and increase its suction power.

[0133] Combination Figure 3 and Figure 4 As shown, taking the target part 900 as a cylindrical battery as an example, when the welding path of the target part 900 is circular, the dust cover 200 can rotate relative to the mounting base 100 in the direction of arrow B.

[0134] In some embodiments, in a plane perpendicular to the first direction Z, there is an angle α between the axis of the first through hole 211 and the axis of the third through hole 212.

[0135] Understandably, when the first suction channel 203 is aligned with the current welding point, the first suction channel 203 can effectively handle most of the particles generated during the welding process.

[0136] In the gap between the first housing 210 and the second housing 220, the airflow velocity is higher at the part closer to the third through hole 212, so the position in the second air intake channel 204 corresponding to the third through hole 212 can better capture particulate matter.

[0137] Specifically, along the rotation direction of the dust collector hood 200 (i.e., the direction of arrow B), the third through hole 212 is located behind the first through hole 211. That is, the area with stronger suction in the second suction channel 204 (the area corresponding to the third through hole 212) is located behind the first suction channel 203, and can be directed towards the front welding point to suck up residual, slow-moving, or falling particles, thus playing a role in finishing cleaning.

[0138] Specifically, the angle α between the axis of the first through hole 211 and the axis of the third through hole 212 can be greater than or equal to 30° and less than or equal to 90°. This angle range can prevent the position of the third through hole 212 from being too close to the first through hole 211, thereby avoiding mutual interference between the flow fields formed by the first intake channel 203 and the second intake channel 204; it can also prevent the position of the third through hole 212 from being too far away from the first through hole 211, thereby avoiding excessive delay in the sweeping effect.

[0139] For example, the included angle α between the axis of the first through hole 211 and the axis of the third through hole 212 can be 30°, 45°, 60°, 90°, or any range between two values.

[0140] Combination Figure 7 As shown, in some embodiments, the second intake channel 204 is connected to the first intake channel 203.

[0141] When the second suction channel 204 is connected to the first suction channel 203, the first suction channel 203 and the second suction channel 204 can share a part of the pipeline or the same external suction source to reduce the number of external suction pipelines and help simplify the pipeline layout.

[0142] Specifically, when the second intake channel 204 is connected to the first intake channel 203, the first through hole 211 and the third through hole 212 provided on the first side wall can be the same through hole. In this case, only one main exhaust pipe needs to be connected to the external suction source.

[0143] Alternatively, the first through hole 211 and the third through hole 212 provided on the first side wall can be different through holes, and the first suction channel 203 and the second suction channel 204 can be connected to different external suction sources to ensure effective suction.

[0144] Combination Figure 5As shown, in some other embodiments, the second intake channel 204 is isolated from the first intake channel 203, that is, the second intake channel 204 and the first intake channel 203 are not connected.

[0145] When the second intake channel 204 is not connected to the first intake channel 203, the two can operate independently without interfering with each other. This helps maintain the suction power required by each channel to effectively capture particulate matter.

[0146] Furthermore, particles inhaled into the first inhalation channel 203 will not enter the second inhalation channel 204, and particles inhaled into the second inhalation channel 204 will not enter the first inhalation channel 203. This helps prevent the collected fine particles from being disturbed and re-erupted, and also helps prevent blockage of the inhalation channels.

[0147] In addition, the independent first suction channel 203 and second suction channel 204 are also highly reliable. An abnormality (such as blockage) in one suction channel will not affect the normal operation of the other suction channel, thus improving the overall stability of dust removal.

[0148] Taking the target component 900 as a cylindrical battery as an example, when the welding path of the target component 900 is circular, the dust cover 200 needs to rotate relative to the mounting base 100 so that the air intake end of the first air intake channel 203 can always be close to the welding point.

[0149] Combination Figure 8 and Figure 9 As shown, in some embodiments, the welding dust removal device further includes a rotating structure 300, and the dust removal hood 200 is rotatably connected to the mounting base 100 through the rotating structure 300.

[0150] By setting a rotating structure 300 between the dust hood 200 and the mounting base 100, the dust hood 200 can be rotated flexibly, so that the air inlet end of the first air intake channel 203 can move with the change of the welding point and maintain the relative position with the welding point, thereby effectively capturing the particles splashed from the welding point.

[0151] Combination Figure 8 As shown, in some embodiments, the rotating structure 300 includes a movable member 310 and a guide member 320; one of the movable member 310 and the guide member 320 is disposed on the mounting base 100 and the other is disposed on the dust cover 200, at least a portion of the movable member 310 is movably connected to the guide member 320, and the guide member 320 is used to limit the movement path of the movable member 310.

[0152] Understandably, the movable part 310 is a moving part in the rotating structure 300, and the guide part 320 is a fixed or reference part in the rotating structure 300. The movable part 310 can generate movement relative to the guide part 320 under the constraint of the guide part 320.

[0153] Through the sliding or rolling engagement of the movable part 310 and the guide part 320, the motion can be transmitted to the dust cover 200, so that the dust cover 200 can move relative to the mounting base 100, thereby realizing the adjustment of the position of the dust cover 200.

[0154] For example, the movable part 310 may be a slider 1321, a ball, the inner ring of a bearing, etc.; the guide part 320 may be a guide rail 1311, a slide, the outer ring of a bearing, etc.

[0155] Specifically, when the movable component 310 is movably connected to the guide component 320, the movable component 310 can be a slider 1321 or a ball. The slider 1321 can slide relative to the guide component 320, or the ball can roll relative to the guide component 320.

[0156] Combination Figure 9 As shown, in some embodiments, when a portion of the movable member 310 is movably connected to the guide member 320, the movable member 310 may be a bearing. The inner ring of the bearing is movable relative to the guide member 320, while the outer ring of the bearing is stationary relative to the guide member 320.

[0157] Specifically, the bearing is fitted onto the outside of the dust cover 200. More specifically, the inner ring of the bearing is fitted onto the outside of the first housing 210, and the outer ring of the bearing can be embedded in the guide member 320.

[0158] By using a bearing for the moving part 310, smoother and more reliable movement between the moving part 310 and the guide part 320 can be achieved. Furthermore, bearings, as a relatively mature component, are easy to replace, reducing maintenance costs.

[0159] In some embodiments, the guide member 320 is disposed on the mounting base 100 and is provided with a guide groove 321; the movable member 310 is disposed on the dust cover 200 and is slidably disposed in the guide groove 321.

[0160] Understandably, by setting the guide 320 on the mounting base 100, the stability and accuracy of the guide trajectory of the guide 320 can be guaranteed, providing a basis for the rotational movement of the dust hood 200.

[0161] The guide member 320 is provided with a guide groove 321, so the guide member 320 can restrict the movement path of the movable member 310 by the shape of the guide groove 321. In addition, the guide groove 321 can accommodate the movable member 310 and also protect the movable member 310 from direct impact from external collisions or contaminants.

[0162] The movable part 310 is slidably disposed in the guide groove 321. The movable part 310 slides along the guide groove 321, which can drive the dust cover 200 to move. It has the characteristics of simple structure and stable operation.

[0163] For example, the movable part 310 is a slider 1321; when the welding path of the target part 900 is arc-shaped, the guide groove 321 is an arc-shaped slide, and the slider 1321 moves along the predetermined arc trajectory of the arc-shaped slide, which can realize the movement following the welding trajectory and avoid deviation or shaking in other directions.

[0164] In some embodiments, when the welding path of the target part 900 is circular, the guide groove 321 is configured as an annular guide groove, which is used to surround the periphery of the target part 900.

[0165] The annular guide groove is set around the periphery of the target part 900. When the movable part 310 runs a full circle along the guide groove 321, it can drive the dust hood 200 to rotate one circle. The movement trajectory of the air inlet end of the first air intake channel 203 of the dust hood 200 can also be circular. The movement trajectory of the air inlet end of the first air intake channel 203 can correspond to the welding path, so that the air inlet end of the first air intake channel 203 is always close to the welding point.

[0166] Specifically, the axis of the annular guide groove can coincide with the axis of the target part 900. More specifically, the axis of the annular guide groove coincides with the center of the welding path. With this configuration, the distance between the air inlet end of the first suction channel 203 and the welding point remains constant, ensuring continuous and effective dust removal during the welding process.

[0167] It should be noted that when the welding trajectory is a complete circle, the dust hood 200 will rotate one revolution accordingly, and the air inlet of the first suction channel 203 will also rotate one revolution along with the welding point. After the dust hood 200 rotates one revolution, the air inlet of the first suction channel 203 can move to the initial position. After the target part 900 is replaced, the next welding can begin.

[0168] In some embodiments, the annular guide groove has an opening 3211; a portion of the movable member 310 is located within the annular guide groove, and the portion of the movable member 310 extends out of the annular guide groove through the opening 3211 and is connected to the dust cover 200.

[0169] An opening 3211 is provided in the annular guide groove to enable the assemblability of the movable part 310. The portion of the movable part 310 located within the annular guide groove cooperates with the sidewall and bottom surface of the annular guide groove, ensuring that the dust collector hood 200 can only move smoothly along a preset circular trajectory without radial runout or axial movement.

[0170] Furthermore, a lubricating material can be provided between the contact surfaces of the movable part 310 and the guide groove 321 to ensure smooth rotation and reduce drive power and wear. Alternatively, ball bearings can be provided between the contact surfaces of the movable part 310 and the guide groove 321 to change the sliding contact between the contact surfaces of the movable part 310 and the guide groove 321 into a rolling contact, which can also reduce the friction between the contact surfaces of the movable part 310 and the guide groove 321 and improve the smoothness of rotation.

[0171] Specifically, the opening 3211 can be oriented toward the axis of the annular guide groove. The movable part 310 is installed from the inside of the guide part 320 into the annular guide groove. The movable part 310 and the dust cover 200 can block the opening 3211 to prevent external pollutants from entering the annular guide groove, which helps to improve the smoothness of the movement of the movable part 310 in the annular guide groove.

[0172] Combination Figures 1 to 4 As shown, in some embodiments, a drive structure 400 is also included. The drive structure 400 is disposed on the mounting base 100 and connected to the dust cover 200. The drive structure 400 is used to drive the dust cover 200 to rotate relative to the mounting base 100.

[0173] Understandably, the drive structure 400 can provide power for the rotation of the dust hood 200, enabling the dust hood 200 to rotate automatically without the need for operators to manually adjust the angle of the dust hood 200, thus maintaining the consistency and accuracy of the angle adjustment of the dust hood 200.

[0174] In practice, the driving speed of the drive structure 400 on the dust collector 200 is controlled in conjunction with the welding speed during the laser welding process, so that the air inlet end of the first air intake channel 203 moves synchronously with the welding point during the rotation of the dust collector 200. Since the air inlet end of the first air intake channel 203 is always close to the welding point, the dust removal effect can be effectively guaranteed.

[0175] In some embodiments, the drive structure 400 includes a first drive member 410 and a transmission member 420; the transmission member 420 is connected to the drive shaft of the first drive member 410, and the transmission member 420 is also connected to the side wall of the dust collector 200, and the first drive member 410 drives the dust collector 200 to rotate through the transmission member 420.

[0176] Understandably, the first drive member 410 can provide power, and the transmission member 420 can receive the power from the drive shaft of the first drive member 410 and transmit it to the dust cover 200 to drive the dust cover 200 to rotate relative to the mounting base 100.

[0177] For example, the first driving component 410 may be a motor. The transmission component 420 may be a gear, rack, conveyor belt, conveyor chain, or linkage, etc.

[0178] Combination Figure 3 and Figure 4 As shown, taking the first driving component 410 as a motor and the transmission component 420 as a conveyor belt as an example, the rotation of the dust hood 200 when the welding trajectory is circular is explained.

[0179] When the welding direction of the target part 900 is as shown by arrow B, the output shaft of the motor can rotate in the direction shown by arrow A. The output shaft of the motor can drive the connected conveyor belt to move. Since the conveyor belt is also connected to the side wall of the dust collector hood 200, the conveyor belt can also drive the dust collector hood 200 to rotate in the direction shown by arrow B, thereby driving the air inlet end of the first suction channel 203 to move in the direction shown by arrow B. The air inlet end of the first suction channel 203 can always be close to the welding point of the target part 900. Under the suction action of the first suction channel 203, particles splashed from the welding point can be effectively captured.

[0180] Correspondingly, the area with stronger suction in the second suction channel 204 (the area corresponding to the third through hole 212) is located behind the first suction channel 203 in the direction shown by arrow B. It can suck air towards the position corresponding to the previous welding point, and can suck up the residual, slow-moving or falling particles during the welding of the previous welding point, thus playing a role in cleaning the end.

[0181] Combination Figure 1 and Figure 2 As shown, in some embodiments, the mounting base 100 includes a clamping member 110; the clamping member 110 has a first surface and a second surface disposed opposite to each other along a first direction Z, a dust cover 200 is disposed on the first surface, and the second surface is used to abut against the target member 900.

[0182] Understandably, since the dust cover 200 is disposed on the first surface of the clamping member 110 and the second surface of the clamping member 110 abuts against the target member 900, the dust cover 200 and the target member 900 can be disposed opposite each other in the first direction Z. The clamping member 110 can press the target member 900, thus stabilizing the relative position of the dust cover 200 and the target member 900, ensuring that the dust cover 200 can always effectively cover the periphery of the welding area of ​​the target member 900.

[0183] The second surface abuts against the target part 900, which also helps to improve the stability of the target part 900 and prevent the target part 900 from vibrating or shifting during the welding process.

[0184] In addition, the close contact between the second surface and the target part 900 helps to reduce the gap between the bottom of the dust cover 200 and the surface of the target part 900, thus preventing welding dust from overflowing.

[0185] In some embodiments, the clamping member 110 has a clearance hole 111, one end of the clearance hole 111 near the first surface is connected to the receiving cavity 201 via the inlet 202, and the other end of the clearance hole 111 near the second surface is used to face the target member 900.

[0186] Understandably, the end of the clearance hole 111 near the second surface can be aligned with the area to be welded on the target part 900, and the end of the clearance hole 111 near the first surface is connected to the receiving cavity 201 via the inlet / outlet 202. Thus, the clearance hole 111 forms a channel penetrating the clamping member 110. With this configuration, while the clamping member 110 presses against the target part 900 to achieve sealing and positioning, it also provides an interference-free channel for the laser beam or welding material through the clearance hole 111, ensuring the normal progress of the welding process.

[0187] The structural design of the clearance hole 111 restricts the welding area to a limited local space, which can effectively constrain the direction of particle dispersion and guide it to the inlet of the upper receiving cavity 201 so that it can be captured by the negative pressure airflow generated by the first suction channel 203 and the second suction channel 204.

[0188] For example, at least part of the clearance hole 111 can be configured as a tapered hole, with the end of the tapered hole near the second surface being the smaller diameter end. The tapered hole can accelerate the airflow and converge it towards the welding point, generating a stronger local negative pressure and significantly improving the capture efficiency of splashed particles.

[0189] Furthermore, the smaller opening 3211 of the clamping member 110 faces the target member 900, allowing the second surface of the clamping member 110 to form a more effective sealing ring with the target member 900, which helps prevent dust from escaping from the interface.

[0190] In some embodiments, the clamping member 110 is further provided with a protective gas channel 112. The air inlet end of the protective gas channel 112 is used to communicate with a protective gas source, and the air outlet end of the protective gas channel 112 is used to communicate with a clearance hole 111. The protective gas channel 112 is used to introduce protective gas into the clearance hole 111.

[0191] By introducing protective gas into the clearance hole 111, the escaping particles can be blown toward the inner wall of the clearance hole 111 and above it, so that the particles can enter the negative pressure dust collection area and be effectively captured by the suction channel, thus preventing the particles from falling back onto the surface of the target part 900.

[0192] For example, the outlet end of the protective gas channel 112 can be close to the end of the clearance hole 111 near the second surface, blowing the protective gas toward the surface of the target part 900 to form an airflow barrier on the surface of the target part 900, effectively blocking the falling welding slag or dust.

[0193] Specifically, the clamping member 110 may include a plurality of connecting plates 113 stacked along the first direction Z. The connecting plates 113 away from the dust cover 200 are connected to the fixing member 120, and the connecting plates 113 away from the dust cover 200 abut against the target member 900.

[0194] In some embodiments, the mounting base 100 further includes a fixing member 120 for connecting the target member 900; a clamping member 110 is slidably disposed on the fixing member 120, and the clamping member 110 is used to approach the fixing member 120 along a first direction Z so that the second surface abuts against the target member 900. The clamping member 110 is also used to move away from the fixing member 120 along the first direction Z so that the second surface disengages from the target member 900.

[0195] The fastener 120 is used to connect the target part 900, and the clamping part 110 is used to clamp the target part 900, which can ensure the fixing effect of the target part 900 and improve the reliability of the welding dust removal device.

[0196] Furthermore, since the clamping member 110 can slide relative to the fixed member 120, the clamping member 110 can quickly move away from the target member 900 along the first direction Z to facilitate loading and unloading, or quickly approach the target member 900 along the first direction Z and press it with a certain pressure, thereby improving the automation level and production efficiency of the welding dust removal device.

[0197] Specifically, in combination Figure 1 and Figure 2 As shown, the fastener 120 may include a base plate 121 and a vertical plate 122 connected to each other. The base plate 121 is used to connect with the workbench surface, the vertical plate 122 is disposed on the top of the base plate 121, and the clamping member 110 can be slidably disposed on the vertical plate 122.

[0198] A fixing block 123 can also be provided on the vertical plate 122, with the fixing block 123 and the base plate 121 located on the same side of the vertical plate 122. When the target component 900 is installed on the fixing component 120, the bottom end of the target component 900 along the first direction Z can abut against the base plate 121, the top end of the target component 900 along the first direction Z can abut against the clamping member 110, and the side wall of the target component 900 along the first direction Z can abut against the fixing block 123. Through the fixing component 120 with the above-described structure, the target component 900 can be stably fixed.

[0199] In some embodiments, the mounting base 100 further includes a second drive member 130, which has a fixed portion 131 and a movable portion 132. The movable portion 132 is used to move relative to the fixed portion 131 along a first direction Z. The movable portion 132 is connected to the clamping member 110, and the fixed portion 131 is connected to the fixing member 120.

[0200] Power is provided by the second drive member 130, which can drive the clamping member 110 to automatically complete the action of contacting and canceling contact with the target member 900, which helps to improve the clamping efficiency of the welding dust removal device.

[0201] The second drive component 130 can output a stable and adjustable clamping force, which can ensure the clamping degree of the welding part, so that a stable and reliable sealing contact is formed between the clamping component 110 and the target component 900, avoiding the problem of dust leakage due to insufficient pressure or damage to the target component 900 due to excessive pressure.

[0202] In practice, the movable part 132 of the second driving member 130 can drive the clamping member 110 to move closer to or away from the fixing member 120, so as to achieve stable clamping of the target member 900.

[0203] In some embodiments, the fixed part 131 is provided with a guide rail 1311, which extends along the first direction Z; the movable part 132 is provided with a slider 1321, which is slidably connected to the guide rail 1311.

[0204] The cooperation between slider 1321 and guide rail 1311 can provide guidance for the movement of clamping member 110, restrict the movement trajectory of clamping member 110, prevent clamping member 110 from deflecting, jamming or shaking during clamping, and ensure the repeatability and reliability of clamping action.

[0205] A second aspect of this application provides a laser welding apparatus, including a laser welding head and a welding dust removal device provided in any of the above embodiments. A dust removal hood 200 of the welding dust removal device is disposed around the periphery of the laser welding head. The laser welding head is used to emit a laser beam towards a target part 900 through the dust removal hood 200.

[0206] The welding dust removal device has been described in detail in the above embodiments and will not be repeated here.

[0207] Specifically, the dust hood 200 has a top channel communicating with the receiving cavity 201 at one end along the first direction Z away from the inlet / outlet 202, and the top channel faces the laser welding head. The laser welding head emits a laser beam toward the target part 900 in sequence through the top channel, the receiving cavity 201 and the inlet / outlet 202.

[0208] The welding dust removal device of the above embodiment is set in the laser welding equipment. The dust removal hood 200 in the welding dust removal device can dynamically respond to the change of welding position on the target part 900, so as to ensure that the air inlet end of the first air intake channel 203 can move with the change of welding point position, thereby ensuring that the air inlet end of the first air intake channel 203 is always close to the current welding point of the target part 900.

[0209] The shortened distance between the air inlet end of the first air intake channel 203 and the welding point ensures sufficient negative pressure adsorption force and airflow speed, enhancing the ability to capture welding slag and dust splashed from the welding point and significantly improving the dust removal effect of the laser welding equipment during the welding process.

[0210] Finally, it should be noted that those skilled in the art, upon considering the specification and practicing the application disclosed herein, will readily conceive of other embodiments of the present application. The embodiments of this application are intended to cover any variations, uses, or adaptations of the embodiments of this application that follow the general principles of the embodiments of this application and include common knowledge or customary technical means in the art not disclosed in the embodiments of this application. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of the embodiments of this application are indicated by the following claims.

[0211] It should be understood that the embodiments of this application are not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from their scope. The scope of the embodiments of this application is limited only by the appended claims.

Claims

1. A welding fume extraction device characterized by, include: Mounting base (100) for connecting target part (900); A dust cover (200) is movably connected to the mounting base (100). The dust cover (200) is used to cover the periphery of the target part (900). The dust cover (200) is provided with a first air intake channel (203), which is used to draw air from inside the dust cover (200). The dust cover (200) is configured to move relative to the mounting base (100) so that the air inlet end of the first air intake channel (203) is close to the welding point of the target part (900).

2. The welding fume extraction device of claim 1, wherein The dust collector hood (200) has a receiving cavity (201) inside. The dust collector hood (200) has an inlet (202) at one end along the first direction. The inlet (202) communicates with the receiving cavity (201) and is directed toward the target component (900).

3. The welding fume extraction device of claim 2, wherein The first suction channel (203) is disposed on one side of the dust removal hood (200) along the first direction. The first suction channel (203) is connected to the receiving cavity (201), and the air inlet end of the first suction channel (203) faces the receiving cavity (201).

4. The welding fume extraction device of claim 2, wherein The dust hood (200) is also provided with a second air intake channel (204), the air intake end of the second air intake channel (204) facing the inlet / outlet (202), and the second air intake channel (204) is used to draw air from inside the dust hood (200).

5. The welding dust removal device according to claim 4, characterized in that, In the first direction, the air inlet end of the first air intake channel (203) is farther away from the inlet / outlet (202) relative to the air inlet end of the second air intake channel (204).

6. The welding dust removal device according to claim 4, characterized in that, The dust collector hood (200) includes a first housing (210) and a second housing (220) connected to each other; The first housing (210) is connected to the mounting base (100), and the first housing (210) covers the outside of the second housing (220). The second housing (220) is used to surround the target (900) along the first direction. There is a gap between the first housing (210) and the second housing (220), which forms the second air intake channel (204).

7. The welding dust removal device according to claim 6, characterized in that, The first housing (210) has a third through hole (212) on its side wall, and the second air intake channel (204) is connected to the third through hole (212).

8. The welding dust removal device according to claim 7, characterized in that, The first housing (210) has a first through hole (211) on its side wall, and the second housing (220) has a second through hole (221) on its side wall. The first through hole (211) and the second through hole (221) are coaxial and connected to form the first air intake channel (203).

9. The welding dust removal device according to claim 8, characterized in that, In a plane perpendicular to the first direction, there is an angle between the axis of the first through hole (211) and the axis of the third through hole (212).

10. The welding dust removal device according to claim 8, characterized in that, The second intake channel (204) is connected to the first intake channel (203); Alternatively, the second intake channel (204) may be isolated from the first intake channel (203).

11. The welding dust removal device according to any one of claims 1-10, characterized in that, It also includes a rotating structure (300), through which the dust cover (200) is rotatably connected to the mounting base (100).

12. The welding dust removal device according to claim 11, characterized in that, The rotating structure (300) includes a movable part (310) and a guide part (320); One of the movable part (310) and the guide part (320) is disposed on the mounting base (100), and the other is disposed on the dust cover (200). At least part of the movable part (310) is movably connected to the guide part (320). The guide part (320) is used to restrict the movement path of the movable part (310).

13. The welding dust removal device according to claim 12, characterized in that, The guide member (320) is disposed on the mounting base (100), and the guide member (320) is provided with a guide groove (321); The movable part (310) is disposed on the dust cover (200), and the movable part (310) is slidably disposed in the guide groove (321).

14. The welding dust removal device according to claim 13, characterized in that, The guide groove (321) is configured as an annular guide groove, which is used to surround the periphery of the target part (900).

15. The welding dust removal device according to claim 14, characterized in that, The annular guide groove has an opening (3211); Part of the movable part (310) is located in the annular guide groove, and part of the movable part (310) extends out of the annular guide groove through the opening (3211) and is connected to the dust cover (200).

16. The welding dust removal device according to claim 12, characterized in that, The movable part (310) is a bearing, which is sleeved on the outside of the dust cover (200).

17. The welding dust removal device according to any one of claims 1-10, characterized in that, It also includes a drive structure (400) disposed on the mounting base (100), the drive structure (400) being connected to the dust cover (200), and the drive structure (400) being used to drive the dust cover (200) to rotate relative to the mounting base (100).

18. The welding dust removal device according to claim 17, characterized in that, The drive structure (400) includes a first drive member (410) and a transmission member (420); The transmission component (420) is connected to the drive shaft of the first drive component (410), and the transmission component (420) is also connected to the side wall of the dust collector (200). The first drive component (410) drives the dust collector (200) to rotate through the transmission component (420).

19. The welding dust removal device according to any one of claims 2-10, characterized in that, The mounting base (100) includes a clamping element (110); The clamping member (110) has a first surface and a second surface disposed opposite to each other along the first direction, the dust cover (200) is disposed on the first surface, and the second surface is used to abut against the target member (900).

20. The welding dust removal device according to claim 19, characterized in that, The clamping member (110) has a clearance hole (111), one end of which near the first surface communicates with the receiving cavity (201) via the inlet (202), and the other end of which near the second surface is directed toward the target member (900).

21. The welding dust removal device according to claim 20, characterized in that, The clamping member (110) is also provided with a protective gas channel (112). The air inlet of the protective gas channel (112) is used to communicate with a protective gas source, and the air outlet of the protective gas channel (112) is connected to the clearance hole (111). The protective gas channel (112) is used to introduce protective gas into the clearance hole (111).

22. The welding dust removal device according to claim 19, characterized in that, The mounting base (100) further includes a fastener (120) for connecting the target component (900); The clamping member (110) is slidably disposed on the fixing member (120). The clamping member (110) is used to approach the fixing member (120) along a first direction so that the second surface abuts against the target member (900); or, the clamping member (110) is used to move away from the fixing member (120) along the first direction so that the second surface disengages from the target member (900).

23. The welding dust removal device according to claim 22, characterized in that, The mounting base (100) further includes a second driving member (130), which has a fixed part (131) and a movable part (132), the movable part (132) being used to move relative to the fixed part (131) along the first direction; The movable part (132) is connected to the clamping member (110), and the fixed part (131) is connected to the fixed member (120).

24. The welding dust removal device according to claim 23, characterized in that, The fixing part (131) is provided with a guide rail (1311), which extends along the first direction; The movable part (132) is provided with a slider (1321), which is slidably connected to the guide rail (1311).

25. A laser welding device, characterized in that, Includes a laser welding head and a welding dust removal device as described in any one of claims 1-24; The dust removal hood (200) of the welding dust removal device is disposed around the periphery of the laser welding head; the laser welding head is used to emit a laser beam to the target part (900) through the dust removal hood (200).

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