A dust removal device and a welding device based on laser welding

Abstract

An embodiment of the present application relates to a dust removal device and a welding device based on laser welding. The dust removal device includes: a dust removal part, including a separation component and a dust removal box component. The separation component is arranged on a movable frame. The separation component includes a separation pipe. The upper part of the separation pipe is a cylindrical first pipe body, and the lower part is a conical second pipe body. A discharge port and a draw plate are arranged at the bottom of the second pipe body. The top of the first pipe body is connected to the dust removal box component through an exhaust pipe; a dust collection part, including a wind curtain component and a dust collection channel. The wind curtain component is arranged on one side of the laser head and the air outlet end faces the laser head. The dust collection channel is arranged on the other side of the laser head. Larger particles in the dust collected and input by the dust collection part are separated by the separation component of the dust removal part, and lighter dust and air are purified by the dust removal box component of the dust removal part, effectively improving the collection effect and purification effect of the dust generated during the welding process.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of welding, and more specifically, to a dust removal device and a welding device based on laser tailor welding. Background Art

[0002] Laser tailor welding equipment is a commonly used equipment in the thin plate welding process of automobile body panels, which is used to weld equal-thickness or unequal-thickness steel sheets together by laser welding process. There are generally two forms of laser tailor welding equipment. One is the form where the laser welding head is fixed and the workpiece (thin plate) moves linearly. The other is the form where the laser welding head moves linearly and the workpiece (thin plate) does not move. Since the mobile laser welding head occupies less floor space, it is widely used.

[0003] In the related art, when the mobile laser welding head removes dust, an exhaust duct is often used for dust removal. Due to the long linear movement stroke of the mobile laser welding head, the exhaust duct is slender and has a large wind resistance. Moreover, the dust collection port at the laser welding head is simple and symmetric, and does not fully consider the airflow characteristics during negative pressure suction of dust, resulting in extremely poor welding dust collection effect. Summary of the Invention

[0004] The embodiments of the present application provide a dust removal device based on laser tailor welding, which is applied to a laser tailor welding device. The laser tailor welding device includes a laser head and a moving frame. The dust removal device includes:

[0005] A dust removal part, including a separation component and a dust removal box component. The separation component is arranged on the moving frame. The separation component includes a separation pipe. The upper part of the separation pipe is a cylindrical first pipe body, and the lower part is a conical second pipe body. The bottom of the second pipe body is provided with a discharge port and a draw plate for opening and closing the discharge port. The top of the first pipe body is connected to the dust removal box component through an exhaust pipe;

[0006] A dust collection part, including a wind curtain component and a dust collection channel. The wind curtain component is arranged on one side of the laser head along the moving direction of the laser head, and the air outlet end faces the laser head. The dust collection channel is arranged on the other side of the laser head. One end of the dust collection channel faces the wind curtain component, and the other end is communicated with the first pipe body along the tangent direction of the first pipe body.

[0007] Optionally, the separation component further includes a vortex blower. The vortex blower is arranged on the top of the first pipe body, and the air inlet of the vortex blower faces the first pipe body.

[0008] Optionally, a dust collecting plate is circumferentially arranged on the laser head. An opening is formed in one side of the dust collecting plate close to the air curtain assembly. A dust collecting port adapted to the air curtain assembly is formed in the side wall of the dust collecting plate close to the dust removing part. The dust collecting channel is connected to the dust collecting plate through the dust collecting port.

[0009] Optionally, the dust collecting plates are symmetrically arranged in the vertical direction, and a gap is left between the bottom of the dust collecting plate and the workpiece to be welded.

[0010] Optionally, the air outlet of the air curtain assembly is arranged to incline upward, and the bottom wall of the dust collecting channel is arranged as an inclined surface adapted to the air outlet direction of the air curtain assembly.

[0011] Optionally, the top wall of the dust collecting plate is arranged to incline from the side close to the air curtain assembly to the side close to the separation assembly.

[0012] Optionally, the bending part of the dust collecting plate in the vertical direction is chamfered.

[0013] Optionally, a dust blocking plate is horizontally arranged on the laser head, and the dust blocking plate is arranged below the air curtain assembly.

[0014] Optionally, the dust removing box assembly includes a suction fan and a filter element box. An air inlet and an air outlet are arranged on the filter element box. The air inlet is connected to the exhaust duct, and the air outlet is connected to the air inlet end of the suction fan.

[0015] In a second aspect of the embodiments of the present application, a welding device based on laser welding is provided, including a laser welding device, and the laser welding device includes a laser head, a moving frame, and a dust removing device.

[0016] When the dust removing device and the welding device based on laser welding provided by the present application are working, two plates are welded by the laser head. The air curtain assembly starts to blow out high-speed air flow towards the laser head direction, and the dust generated during welding is blown towards the dust collecting channel side. The dust enters the separation pipe along the tangent direction of the first pipe body through the dust collecting channel and forms a cyclone air flow. Under the action of gravity and centrifugal force, larger particles sink and pad downwards along the constraints of the side walls of the first pipe body and the second pipe body and enter the second pipe body. Air and lighter dust enter the exhaust channel upwards, and the air and lighter dust are sucked into the dust removing box assembly through the dust removing box assembly. The dust removing box assembly purifies the incoming air with dust, thereby completing the entire dust removing work. The separation assembly fully conveys the generated dust to the dust removing part. The separation component of the dust removing part separates larger particles in the dust collected and input by the dust collecting part, and the dust removing box assembly of the dust removing part purifies the lighter dust and air, effectively improving the collection effect and purification effect of the dust generated during the welding process. Description of the Drawings

[0017] To more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings required for the description of the embodiments of the present application will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other accompanying drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 is a schematic diagram of a welding device proposed in an embodiment of the present application;

[0019] Figure 2 is an enlarged schematic diagram of the welding head part proposed in an embodiment of the present application.

[0020] Description of the drawings: 1. Dust removal part; 2. Separation assembly; 21. Separation pipe; 211. First pipe body; 212. Second pipe body; 22. Discharge port; 23. Drawer plate; 24. Eddy current fan; 3. Dust removal box assembly; 31. Suction fan; 32. Filter element box; 4. Exhaust duct; 5. Dust collection part; 51. Air curtain assembly; 52. Dust collection channel; 6. Dust collection plate; 7. Dust baffle; 8. Laser head; 9. Moving frame. Detailed implementation manners

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0022] Laser tailor-welding equipment is a commonly used equipment in the laser welding process of automotive body panels, which is used to weld equal-thickness or unequal-thickness thin steel plates together by laser welding process. There are generally two forms of laser tailor-welding equipment. One is the form in which the laser welding head is fixed and the workpiece (thin plate) moves linearly. Since it requires a large floor area, it is less used. The other is the form in which the laser welding head moves linearly and the workpiece (thin plate) does not move. Since it occupies less floor area, it is widely used.

[0023] For the first form, since the laser welding head does not move, it is easy to design and implement the smoke and dust adsorption device generated by laser welding, and it is easy to achieve efficient smoke and dust suction. For the latter structure, due to the long linear movement stroke of the mobile laser welding head, the exhaust duct is slender, the wind resistance is large, and the smoke and dust collection port at the laser welding head is simple and symmetrical, without fully considering the airflow characteristics during negative pressure suction of smoke and dust, resulting in extremely poor welding smoke and dust collection effect.

[0024] Embodiment 1

[0025] In view of this, refer to Figure 1 and Figure 2 In a first aspect, the present application provides a dust removal device based on laser welding, which is applied to laser welding equipment. The laser welding equipment includes a laser head 8 and a moving frame 9. The moving frame 9 moves horizontally in a certain direction. The laser head 8 is arranged at the bottom of the moving frame 9 in a vertical direction so that the moving frame 9 drives the laser head 8 to move. The dust removal device includes:

[0026] The dust removal part 1 includes a separation component 2 and a dust removal box component 3. The separation component 2 is arranged on the mobile frame 9. The separation component 2 includes a separation tube 21. The upper part of the separation tube 21 is a cylindrical first tube body 211, and the lower part is a conical second tube body 212. The bottom of the second tube body 212 is provided with an exhaust port 22 and a drawer 23 for opening and closing the exhaust port 22. The top of the first tube body 211 is connected to the dust removal box component 3 through an exhaust duct 4.

[0027] The dust collecting part 5 includes a wind curtain assembly 51 and a dust collecting channel 52. The wind curtain assembly 51 is arranged on one side of the laser head 8 along the moving direction of the laser head 8 and the air outlet end faces the laser head 8. The dust collecting channel 52 is arranged on the other side of the laser head 8. One end of the dust collecting channel 52 faces the wind curtain assembly 51, and the other end is connected to the first tube body 211 along the tangent direction of the first tube body 211.

[0028] The separation component 2 is arranged on one side of the laser head 8 as a component for sucking smoke and dust in the first step. The dust removal box component 3 is connected to the separation component 2 and is used to further process the smoke and air separated by the separation component 2, so as to discharge the clean air. Specifically, the vertical plane where the moving route of the laser head 8 is located is used as the reference plane, the wind curtain component 51 is arranged on the top of the laser head 8 and is symmetrically arranged along the reference plane, the separation tube 21 is arranged on the side of the laser head 8 away from the moving direction and deviates from the reference plane in the vertical direction, and the dust collection channel 52 is symmetrically arranged about the reference plane. , so that the dust collecting channel 52 is connected to the first tube body 211 along the tangential direction of the first tube body 211. During the welding process, the smoke and dust generated are continuously blown into the first tube body 211 through the dust collecting channel 52 by the wind curtain assembly 51. Since the dust collecting channel 52 is connected to the first tube body 211 along the tangential direction of the first tube body 211, the blown airflow forms a circulation in the first tube body 211. Under the action of gravity, particles with larger mass fall from the first tube body 211 to the second tube body 212, and air and lighter smoke and dust enter the exhaust duct upward under the action of the circulation.

[0029] One end of the exhaust duct moves synchronously with the separation tube 21 set on the movable frame 9, and the other end is fixedly connected to the fixed dust removal box assembly 3. After the smoke enters the exhaust duct, the dust removal box assembly 3 provides secondary suction to the smoke in the exhaust duct so that the smoke is sucked into the dust removal box assembly 3 for purified exhaust.

[0030] When the laser tailor-welding equipment is working, the laser head 8 is used to weld two plates. The air curtain assembly 51 starts to blow out high-speed air flow towards the laser head 8, blowing the dust generated during welding towards the side of the dust collection channel 52. The dust enters the separation tube 21 along the tangential direction of the first tube body 211 through the dust collection channel 52 and forms a cyclone air flow. Under the action of gravity and centrifugal force, larger particles sink and pad downwards along the constraints of the side walls of the first tube body 211 and the second tube body 212 into the second tube body 212, while air and lighter dust enter the exhaust passage upwards. The air and lighter dust are sucked into the dust removal box assembly 3 through the exhaust dust removal box assembly 3, and the dust removal box assembly 3 purifies the incoming air with dust, thus completing the entire dust removal work. Through the separation assembly 2, the generated dust is fully transported to the dust removal part 1. The separation assembly 2 of the dust removal part 1 separates the larger particles in the dust collected and input by the dust collection part 5, and the dust removal box assembly 3 of the dust removal part 1 purifies the lighter dust and air, effectively improving the collection effect and purification effect of the dust generated during the welding process.

[0031] Refer to Figure 1 and Figure 2 In some embodiments, the separation assembly 2 further includes an eddy current fan 24. The eddy current fan 24 is arranged at the top of the first tube body 211, and the air inlet of the eddy current fan 24 faces the first tube body 211.

[0032] After the dust is blown in by the air curtain assembly 51, since the air flow direction is the tangential direction of the first tube body 211, the air flow forms a circulating flow in the first tube body 211. By arranging the eddy current fan 24 at the top of the first tube body 211, the intensity of the circulating flow formed by the air curtain assembly 51 blowing the dust into the separation assembly 2 is further improved, thereby improving the separation effect of the large-particle dust and the dust air flow in the separation tube 21. At the same time, the eddy current fan 24 sucks out the dust after the large-particle impurities settle, further improving the dust removal effect of the device.

[0033] The rotation direction of the eddy current fan 24 is adapted to the direction in which the air curtain assembly 51 blows into the first tube body 211. The air inlet end of the eddy current fan 24 faces the inside of the first tube body 211, and the air outlet end faces the exhaust duct 4. Specifically, the model of the eddy current fan 24 is determined according to the model of the laser tailor-welding equipment and the model of the first tube body 211.

[0034] In some embodiments, a dust collection plate 6 is arranged circumferentially around the laser head 8. An opening is provided on the side of the dust collection plate 6 close to the air curtain assembly 51, and a dust collection port adapted to the air curtain assembly 51 is provided on the side wall of the dust collection plate 6 close to the dust removal part 1. The dust collection channel 52 is connected to the dust collection plate 6 through the dust collection port.

[0035] The dust collecting plate 6 includes three plate bodies located on both sides of the laser head 8, parallel to the moving direction of the laser head 8 and close to one side of the separation component 2, forming the dust collecting plate 6 surrounding the laser head 8 in three directions. The dust collecting plate 6 is detachably arranged on the moving frame 9. The top of the dust collecting plate 6 is provided with an opening for the laser head 8 to extend into the dust collecting plate 6, and the dust collecting plate 6 is used to block and collect the soot and dust, effectively improving the dust collecting effect of the device.

[0036] The dust collecting port is opened on the side wall of the dust collecting plate 6 close to the dust removing part 1 and faces the air outlet of the air curtain assembly 51. The edge of the dust collecting channel 52 is hermetically connected to the edge of the dust collecting port, so that the soot and dust can smoothly enter the dust collecting channel 52.

[0037] In some embodiments, the dust collecting plate 6 is symmetrically arranged in the vertical direction, and there is a gap between the bottom of the dust collecting plate 6 and the workpiece to be welded.

[0038] During the working process, some particles are blown into the first pipe body 211 by the air curtain assembly 51, and the other part is blocked and collected by the dust collecting plate 6 and falls on the ground, avoiding the particles from splashing everywhere.

[0039] In some embodiments, the air outlet of the air curtain assembly 51 is arranged with an upward inclination, and the bottom wall of the dust collecting channel 52 is set as an inclined surface adapted to the air outlet orientation of the air curtain assembly 51.

[0040] By arranging the air outlet with an upward inclination, a certain upward force is given to the soot and dust during the working process, thereby reducing the amount of soot and dust falling under the action of gravity, and further blowing more soot and dust into the dust collecting channel 52, so as to improve the dust collecting effect of the device. The bottom wall of the dust collecting channel 52 extends downward, and the edge of the bottom wall is lower than the edge of the bottom of the air curtain assembly 51, and the width of the dust collecting channel 52 is greater than the width of the air outlet end of the air curtain assembly 51, so that the soot and dust blown by the air curtain assembly 51 towards the dust collecting channel 52 can completely enter the dust collecting channel 52, thereby improving the dust collecting effect of the device.

[0041] Among them, the dust collecting channel 52 can have a square cross-section or other shapes of cross-sections. According to the air outlet of the air curtain assembly 51 and the models of other devices, the shape and size of the dust collecting channel 52 can be adaptively changed.

[0042] In some embodiments, the top wall of the dust collecting plate 6 is inclined from the side close to the air curtain assembly 51 towards the side close to the separation component 2

[0043] When the air curtain assembly 51 blows the soot and dust towards the dust collecting channel 52, the soot and dust are likely to spread. By inclining the top of the dust collecting plate 6, a funnel shape expanding from the side close to the air curtain assembly 51 towards the side close to the separation component 2 is formed at the top of the dust collecting plate 6, avoiding hindering the soot and dust and guiding the soot and dust at the same time, further improving the dust collecting effect of the device.

[0044] In some embodiments, the chamfer is provided at the bent portion of the dust collecting plate 6 along the vertical direction.

[0045] The dust collecting plate 6 is integrally provided and is bent from a whole piece of steel. The bent portion is set as a rounded corner, so as to guide the soot when the air curtain assembly 51 blows the soot into the dust collecting channel 52, and reduce the resistance suffered by the soot.

[0046] In some embodiments, a dust blocking plate 7 is horizontally arranged on the laser head 8, and the dust blocking plate 7 is arranged below the air curtain assembly 51.

[0047] During the welding process, the splashing soot is likely to contact the welding head, resulting in damage to the welding head. Therefore, a dust blocking plate 7 is horizontally arranged between the laser head 8 and the air curtain assembly 51 to block the soot splashing towards the laser head 8, thereby protecting the laser head 8, and then the air curtain assembly 51 blows the soot towards the dust collecting channel 52.

[0048] In some embodiments, the dust removing box assembly 3 includes a suction fan 31 and a filter element box 32. The filter element box 32 is provided with an air inlet and an air outlet. The air inlet is connected to the exhaust duct 4, and the air outlet is connected to the air inlet end of the suction fan 31.

[0049] After the separation assembly 2 sucks in the soot, the eddy current fan 24 inputs the soot into the exhaust duct 4. However, the exhaust duct 4 needs to move along with the laser head 8, so it is relatively long, and the soot is likely to deposit in the exhaust duct 4. Therefore, the dust removing box assembly 3 including the suction fan 31 and the filter element box 32 is provided. The secondary wind force is provided by the suction fan 31 to suck the soot in the exhaust duct 4 into the filter element box 32, further improving the suction effect on the soot.

[0050] The filter element box 32 filters the sucked soot and performs secondary filtering treatment to eliminate the harmful gases in the air, and then discharges the filtered clean air through the suction fan 31, thereby improving the treatment effect on the soot and reducing the pollution to the air.

[0051] Among them, the model of the filter element box 32 can be determined according to the welding materials and plates, so as to treat different soot and improve the applicability of the device.

[0052] Embodiment 2

[0053] Based on the same inventive concept, another embodiment of the present application provides a welding device based on laser welding, including a laser welding device, refer to Figure 1 and Figure 2, the laser tailor-welding equipment includes a laser head 8 and a moving frame 9, and also includes the dust removal equipment provided in the first embodiment. The laser head 8 and the air curtain assembly 51 are installed at the bottom of the moving frame 9. The dust collection plate 6 is installed at the bottom of the laser head 8, and the dust collection channel 52 is connected to the separation pipe 21 to complete the connection between the dust removal equipment and the laser head 8.

[0054] For the device embodiments, since they are basically similar to the method embodiments, the description is relatively simple. For the relevant parts, please refer to the partial description of the method embodiments.

[0055] Each embodiment in this specification is described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other.

[0056] Although the preferred embodiments of the embodiments of the present application have been described, those skilled in the art can make additional changes and modifications once they know the basic creative concept. Therefore, the appended claims are intended to be interpreted to include the preferred embodiments and all changes and modifications falling within the scope of the embodiments of the present application.

[0057] It should also be noted that in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or terminal device. Without further limitation, the element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or terminal device including the said element.

[0058] The above has introduced in detail a dust removal equipment and a welding device based on laser tailor-welding provided by the present application. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A dust removal device based on laser welding, applied to a laser welding device, the laser welding device including a laser head (8) and a moving frame (9), characterized in that, The dust removal device includes: A dust removal part (1), including a separation component (2) and a dust removal box component (3). The separation component (2) is arranged on the moving frame (9). The separation component (2) includes a separation pipe (21). The upper part of the separation pipe (21) is a cylindrical first pipe body (211), and the lower part is a conical second pipe body (212). A discharge port (22) and a draw plate (23) for opening and closing the discharge port (22) are provided at the bottom of the second pipe body (212). The top of the first pipe body (211) is connected to the dust removal box component (3) through an air extraction pipe (4); A dust collection part (5), including an air curtain component (51) and a dust collection channel (52). The air curtain component (51) is arranged on one side of the laser head (8) along the moving direction of the laser head (8), and the air outlet end faces the laser head (8). The dust collection channel (52) is arranged on the other side of the laser head (8). One end of the dust collection channel (52) faces the air curtain component (51), and the other end is connected to the first pipe body (211) along the tangential direction of the first pipe body (211); The separation component (2) further includes a vortex blower (24). The vortex blower (24) is arranged on the top of the first pipe body (211), and the air inlet of the vortex blower (24) faces the first pipe body (211); A dust collection plate (6) is arranged circumferentially around the laser head (8). An opening is provided on the side of the dust collection plate (6) close to the air curtain component (51). A dust collection port adapted to the air curtain component (51) is provided on the side wall of the dust collection plate (6) close to the dust removal part (1). The dust collection channel (52) is connected to the dust collection plate (6) through the dust collection port.

2. The dust removal device according to claim 1, characterized in that The dust collection plates (6) are symmetrically arranged in the vertical direction, and a gap is left between the bottom of the dust collection plates (6) and the workpiece to be welded.

3. The dust removal device according to claim 1, characterized in that, The air outlet of the air curtain component (51) is inclined upward, and the bottom wall of the dust collection channel (52) is set as an inclined plane adapted to the air outlet direction of the air curtain component (51).

4. The dust removal device according to claim 3, characterized in that, The top wall of the dust collection plate (6) is inclined from the side close to the air curtain component (51) to the side close to the separation component (2).

5. The dust removal device according to claim 1, characterized in that, The bending part of the dust collection plate (6) in the vertical direction is chamfered.

6. The dust removal device according to claim 1, characterized in that, A dust blocking plate (7) is horizontally arranged on the laser head (8), and the dust blocking plate (7) is arranged below the air curtain component (51).

7. The dust removal device according to claim 1, characterized in that, The dust removal box component (3) includes a suction fan (31) and a filter element box (32). An air inlet and an air outlet are provided on the filter element box (32). The air inlet is connected to the air extraction pipe (4), and the air outlet is connected to the air inlet end of the suction fan (31).

8. A welding device based on laser tailor welding, comprising a laser tailor welding device, wherein the laser tailor welding device includes a laser head (8) and a moving frame (9), and is characterized in that, It also includes the dust removal device according to any one of claims 1-7.

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