Laser welding machine with soot filtering means

Abstract

The utility model discloses a kind of laser welding machines with smoke filtering components, including displacement component, welding assembly, smoke filtering component and shell;Welding assembly is used for laser welding, and welding assembly includes the thread lead screw formed in its periphery, servo motor and mounting piece;Mounting piece is fixed with displacement component, and is used for installing servo motor, and servo motor is used to drive thread lead screw rotation;Smoke filtering component includes fan, screw nut, suction pipe and suction head;Fan is communicated with the inside of screw nut by hose, and thread lead screw is cooperated with screw nut, and suction pipe is communicated with the inside of screw nut, and is communicated with suction head;The inside of shell is formed with guide rail;Shell is fixedly connected with displacement component, and guide rail is cooperated with screw nut;Under the drive of servo motor, screw nut can move along the direction of guide rail.The utility model technical scheme aims at improving smoke adsorption effect in laser welding process.

Description

Technical Field

[0001] This utility model relates to the field of laser welding equipment technology, and in particular to a laser welding machine with a fume filter component. Background Technology

[0002] Laser welding is a high-energy-density precision machining method. However, during laser welding, the high temperature causes the metal material to rapidly vaporize and produce a large amount of smoke composed of tiny metal oxide particles. This welding fume not only harms the health of operators and pollutes the workshop environment, but also severely contaminates the optical lenses of the welding equipment, leading to laser energy attenuation, unstable welding processes, and increased equipment maintenance costs. Therefore, modern laser welding machines typically integrate fume filtering components to capture and efficiently filter the generated fumes at the source during welding, ensuring personnel health, maintaining stable equipment operation, and guaranteeing welding quality.

[0003] In existing technologies, a common approach to simultaneously equipping welding heads and fume filter components is to use separate devices. For example, the suction nozzle of the fume filter component is suctioned by a robotic arm or additional support structure. However, this setup still cannot prevent fume particles from adhering to the optical lenses of the welding head, and the problem of incomplete fume adsorption still exists. Utility Model Content

[0004] The purpose of this invention is to provide a laser welding machine with a fume filter component, which aims to improve the fume adsorption effect during the laser welding process.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A laser welding machine with a fume filter component, the laser welding machine comprising a displacement component, a welding component, a fume filter component, and a housing;

[0007] The welding assembly is used for laser welding. The welding assembly includes a threaded screw, a servo motor, and a mounting component formed on its periphery. The mounting component is fixed to the displacement assembly and is used to mount the servo motor, which is used to drive the threaded screw to rotate.

[0008] The dust filtration assembly includes a fan, a lead screw nut, a suction pipe, and a suction head; the fan is connected to the inside of the lead screw nut via a hose, the lead screw is engaged with the lead screw nut, and the suction pipe is connected to the inside of the lead screw nut and to the suction head.

[0009] A guide rail is formed on the inner side of the housing; the housing is fixedly connected to the displacement component, and the guide rail cooperates with the lead screw nut; under the drive of the servo motor, the lead screw nut can move along the direction of the guide rail.

[0010] In one embodiment, a pre-filter is provided inside the suction head; and a high-efficiency filter is provided inside the lead screw nut.

[0011] In one embodiment, the suction head is provided with a removable cap, the cap having a suction hole.

[0012] In one embodiment, the laser welding machine further includes an air curtain assembly;

[0013] The air curtain assembly is disposed on the outer periphery of the housing and is fixed to the displacement assembly.

[0014] In one embodiment, spaced slits are formed below the air curtain assembly for blowing out airflow to form a stratosphere; the suction holes are spaced apart to correspond to the gaps between adjacent slits.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] This utility model's technical solution uses a servo motor to drive a lead screw to rotate, thereby precisely controlling the movement of the suction head connected to the lead screw nut along the guide rail, thus achieving flexible adjustment of the working position of the fume filter assembly. During laser welding, the suction head can be moved downwards and closer to the weld pool, significantly improving the capture efficiency and suction effect of harmful fumes by reducing the distance from the source of fume generation. When the welding head needs to move or is not in a welding state, the suction head can be driven upwards to the retracted position, completely avoiding the workpiece and fixture, effectively preventing interference and collision risks, and avoiding physical interference that may be caused to the normal operation of the welding head, greatly improving the safety and reliability of equipment operation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0019] Figure 1 This is a schematic diagram of a structure of an embodiment of the laser welding machine with a fume filter component according to the present invention;

[0020] Figure 2 for Figure 1 Enlarged view of part A in the image;

[0021] Figure 3 This is a schematic diagram of another embodiment of the laser welding machine with a dust filter component according to the present invention.

[0022] Figure 4 for Figure 3 Enlarged view of part B in the image;

[0023] Illustration: 100, Laser welding machine with fume filter; 110, Displacement assembly;

[0024] 120. Welding assembly; 121. Lead screw; 122. Servo motor; 123. Mounting component;

[0025] 130. Smoke and dust filter assembly; 131. Lead screw nut; 131a. High-efficiency filter; 132. Suction pipe; 133. Suction head; 133a. Pre-filter; 1331. Cover; 1332. Suction port;

[0026] 140. Housing; 141. Guide rail;

[0027] 150. Air curtain assembly; 151. Gap. Detailed Implementation

[0028] To make the technical objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component centrally located at the same time.

[0030] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0031] Laser welding is a high-energy-density precision machining method. However, during laser welding, the high temperature causes the metal material to rapidly vaporize and produce a large amount of smoke composed of tiny metal oxide particles. This welding fume not only harms the health of operators and pollutes the workshop environment, but also severely contaminates the optical lenses of the welding equipment, leading to laser energy attenuation, unstable welding processes, and increased equipment maintenance costs. Therefore, modern laser welding machines typically integrate fume filtering components to capture and efficiently filter the generated fumes at the source during welding, ensuring personnel health, maintaining stable equipment operation, and guaranteeing welding quality.

[0032] In existing technologies, a common approach to simultaneously equipping welding heads and fume filter components is to use separate devices. For example, the suction nozzle of the fume filter component is suctioned by a robotic arm or additional support structure. However, this setup still cannot prevent fume particles from adhering to the optical lenses of the welding head, and the problem of incomplete fume adsorption still exists.

[0033] This utility model provides a laser welding machine 100 with a fume filter component, which aims to improve the fume adsorption effect during the laser welding process.

[0034] Please see Figures 1 to 4 In one embodiment, the laser welding machine 100 with fume filter includes a displacement component 110, a welding component 120, a fume filter 130, and a housing 140.

[0035] The welding assembly 120 is used for laser welding. The welding assembly 120 includes a threaded screw 121, a servo motor 122, and a mounting component 123 formed on its periphery. The mounting component 123 is fixed to the displacement assembly 110 and is used to mount the servo motor 122. The servo motor 122 is used to drive the threaded screw 121 to rotate.

[0036] The dust filtration assembly 130 includes a fan (not shown), a lead screw nut 131, a suction pipe 132, and a suction head 133; the fan is connected to the interior of the lead screw nut 131 through a hose, the threaded lead screw 121 is engaged with the lead screw nut 131, and the suction pipe 132 is connected to the interior of the lead screw nut 131 and is connected to the suction head 133.

[0037] A guide rail 141 is formed on the inner side of the housing 140; the housing 140 is fixedly connected to the displacement component 110, and the guide rail 141 cooperates with the lead screw nut 131; under the drive of the servo motor 122, the lead screw nut 131 can move along the direction of the guide rail 141.

[0038] It is understood that in this embodiment of the utility model, the servo motor 122 drives the threaded screw 121 to rotate, thereby precisely controlling the suction head 133 connected to the screw nut 131 to move along the guide rail 141, thus realizing flexible adjustment of the working position of the fume filter assembly 130. During laser welding, the suction head 133 can be moved downward and closer to the weld pool, significantly improving the capture efficiency and suction effect of harmful fumes by reducing the distance from the source of fume generation. When the welding head needs to be moved or in a non-welding state, the suction head 133 can be driven upward to the retracted position, completely avoiding the workpiece and fixture, effectively preventing interference and collision risks, and avoiding physical interference that may be caused to the normal operation of the welding head, greatly improving the safety and reliability of equipment operation.

[0039] Specifically, the displacement component 110 can be a conventional three-axis linear module system, a multi-joint industrial robot, or a gantry structure.

[0040] The welding assembly 120 is used to generate and output laser light for welding. The specific displacement assembly 110 has a threaded screw 121 formed on its periphery. The servo motor 122 is the drive source providing lifting power. The servo motor 122 can be fixedly connected to one end of the threaded screw 121 via a coupling or flange. The mounting component 123 serves two purposes: firstly, it is fixedly connected to the slider of the Z-axis slide of the displacement assembly 110; secondly, it is used to mount the servo motor 122 and the bearing housing supporting the threaded screw 121, thereby securely mounting the entire lifting system onto the displacement assembly 110.

[0041] The smoke filter assembly 130 is the part that performs smoke capture and transport, and it can be driven to move up and down as a moving unit. A fan is used to provide the negative pressure source required for smoke extraction; it can be a centrifugal fan or a vortex fan. It is internally connected to the lead screw nut 131 via a hose.

[0042] The lead screw nut 131 is precisely fitted with the threaded lead screw 121 to achieve vertical movement, and it is also the core hub for dust collection and transmission. When the servo motor 122 drives the threaded lead screw 121 to rotate forward or backward, the lead screw nut 131 will make corresponding upward or downward linear movements along the axis of the threaded lead screw 121. Its interior is designed as a cavity or channel to collect the dust sucked in from the suction head 133 and guide it to the hose connected to the fan.

[0043] The suction tube 132 is a rigid pipe for connection, with one end connected to the inside of the lead screw nut 131 and the other end connected to the suction head 133. The suction head 133 serves as a dust capture port, and its lifting and lowering movement is ultimately for adjusting the distance between it and the welding workpiece.

[0044] Furthermore, a guide rail 141 is formed on the inner side of the housing 140 to provide precise guidance for the lifting movement and prevent torsion. The guide rail 141 can be a linear guide rail 141 or a V-shaped guide groove.

[0045] It is also understood that in this embodiment, the servo motor 122 drives the threaded screw 121 to rotate, which in turn drives the entire dust filter assembly 130, which is fixed to the screw nut 131, to move up and down precisely along the guide rail 141 on the outer shell 140, thereby realizing flexible control of the working position of the suction head 133. During laser welding, the suction head 133 can be driven down to a position close to the weld pool, which significantly shortens the distance to the source of dust generation, thereby fundamentally improving the dust capture efficiency and adsorption effect.

[0046] Meanwhile, the design of connecting the fan to the screw nut 131 via a flexible hose makes the screw nut 131, as the core of the motion, directly serve as the collection and distribution hub for smoke and dust, ensuring the continuity and unobstructed flow of smoke and dust during lifting and lowering. Furthermore, the screw nut 131 reduces friction during descent, improving the reliability of the descent process.

[0047] In one embodiment of the present invention, a primary filter 133a is provided inside the suction head 133; and a high-efficiency filter 131a is provided inside the lead screw nut 131.

[0048] Specifically, the primary filter 133a is mainly used to adsorb and collect most of the larger particulate pollutants generated during the welding process at the fume inlet, such as hot metal spatter and spark slag. Its specific implementation can be, but is not limited to, a metal filter screen, a porous sintered metal filter element, or a high-temperature resistant ceramic filter sheet.

[0049] The high-efficiency filter 131a is mainly used for fine filtration to capture micron-sized fine dust particles that the pre-filter 133a fails to intercept. A specific implementation may include a HEPA filter element, etc.

[0050] It is also understandable that this tiered filtration layout makes full use of the internal space of the fume filter assembly 130, making the entire fume filtration process more rational, efficient, and easier to maintain during welding, thereby continuously providing clean exhaust air and protecting the fan from damage.

[0051] Please continue reading. Figures 1 to 4 In one embodiment, the suction head 133 is provided with a removable cover 1331, the cover 1331 having a suction hole 1332.

[0052] Understandably, the cover 1331 is designed to improve its ease of maintenance and functional reliability. Optionally, the cover 1331 is connected to the body of the suction head 133 by screws or by quick-release clips.

[0053] In one embodiment, the laser welding machine further includes an air curtain assembly 150; the air curtain assembly 150 is disposed on the outer periphery of the housing 140 and fixed to the displacement assembly 110.

[0054] Understandably, by adding the air curtain assembly 150, a dynamic airflow barrier that moves synchronously with the welding head and the smoke extraction head is introduced. This air curtain can form a local positive pressure protection zone around the weld pool, effectively confining the welding fumes that spread upward and in all directions within the effective capture range of the suction head 133, while isolating the influence of external air disturbances on the path of the fumes. Thus, in synergy with the lifting suction head 133, the dispersion of fumes is greatly reduced, and the capture efficiency of the suction head 133 for harmful fumes is significantly improved.

[0055] In one specific embodiment, spaced slits 151 are formed below the air curtain assembly 150, the slits 151 being used to blow out airflow to form a stratosphere; the suction holes 1332 are arranged at intervals corresponding to the gaps between adjacent slits 151.

[0056] Specifically, the stratosphere refers to the uniform and stable airflow velocity and direction of the airflow blown out from each gap 151, which can converge to form a stable, laminar gas cover layer. This stable airflow layer can effectively suppress the disorderly turbulent diffusion of smoke and dust. The spacing of the suction holes 1332 corresponding to the gaps between adjacent gaps 151 clearly defines the distribution position of the suction holes 1332 on the removable cover 1331 as corresponding to the distribution of gaps 151 in the air curtain assembly 150. In vertical projection, it is exactly aligned with the partition area between two adjacent air outlet gaps 151 below. It can be understood that the stable airflow blown out from the gaps 151 constrains and guides the smoke and dust to the suction holes 1332 adjacent to the gaps, and the suction holes 1332 generate negative pressure at this point, accurately sucking in the gathered smoke and dust, creating a highly efficient pneumatic collaborative capture environment, and achieving a near-zero dispersion purification effect for welding smoke and dust as a whole.

[0057] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model 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 of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A laser welding machine with a fume filter component, characterized in that, The laser welding machine includes a displacement component, a welding component, a fume filtration component, and a housing; The welding assembly is used for laser welding. The welding assembly includes a threaded screw, a servo motor, and a mounting component formed on its periphery. The mounting component is fixed to the displacement assembly and is used to mount the servo motor, which is used to drive the threaded screw to rotate. The dust filtration assembly includes a fan, a lead screw nut, a suction pipe, and a suction head; the fan is connected to the inside of the lead screw nut via a hose, the lead screw is engaged with the lead screw nut, and the suction pipe is connected to the inside of the lead screw nut and to the suction head. A guide rail is formed on the inner side of the housing; the housing is fixedly connected to the displacement component, and the guide rail cooperates with the lead screw nut; under the drive of the servo motor, the lead screw nut can move along the direction of the guide rail.

2. The laser welding machine with fume filter component as described in claim 1, characterized in that, The suction head is equipped with a pre-filter; the lead screw nut is equipped with a high-efficiency filter.

3. The laser welding machine with fume filter component as described in claim 2, characterized in that, The suction head is provided with a removable cover, and the cover has a suction hole.

4. The laser welding machine with fume filter component as described in claim 3, characterized in that, The laser welding machine also includes an air curtain assembly; the air curtain assembly is disposed on the outer periphery of the housing and fixed to the displacement assembly.

5. The laser welding machine with fume filter component as described in claim 4, characterized in that, The air curtain assembly has spaced slits at its bottom, which are used to blow out airflow to form a stratosphere; the suction holes are spaced apart to correspond to the gaps between adjacent slits.

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