Air knife structure and laser processing equipment

Abstract

The utility model relates to an air knife structure and laser processing equipment, and the air knife structure comprises a mounting rack which is connected with the laser processing equipment; the first air knife assembly is connected with the mounting frame and is provided with a first air outlet; the second air knife assembly is connected with the first air knife assembly and is provided with a second air outlet; wherein the first air outlet and the second air outlet face laser beams output by laser processing equipment, airflow is output through the first air outlet and the second air outlet, and the first air outlet and the second air outlet are located at different height positions respectively. Different air knife bodies can be arranged at different height positions, so that air flows output towards the laser beams are formed at different positions, dust, splashes and plasmas generated in the laser machining process are blown away through the air curtain, and the machining quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of laser processing equipment, specifically to an air knife structure and laser processing equipment. Background Technology

[0002] Currently, laser processing equipment uses a transverse air knife structure to form an air curtain to protect the galvanometer lens, preventing heat, dust, spatter, and plasma generated during laser processing from contaminating and damaging the galvanometer lens, thus affecting welding stability. However, the height of the aforementioned transverse air knife structure is usually not adjustable, and it can only form an air curtain in one position. For example, in the technical solution with application number 202023162020.9 and patent name "A Laser Welding Head and a Coaxial Gas Protection Device for a Laser Welding Head", the airflow can only be ejected from the strip-shaped air outlet of the transverse air knife assembly, and the position and orientation of the strip-shaped air outlet are fixed, thus failing to provide all-round protection for the galvanometer lens. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides an air knife structure and a laser processing equipment, which can set different air knife bodies at different height positions to form airflows towards the laser beam output at different positions, so as to blow away dust, spatter, and plasma generated during laser processing through air curtains, thereby improving processing quality.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] On the one hand, an air knife structure is provided, which includes:

[0006] Mounting bracket, which connects to laser processing equipment;

[0007] A first air knife assembly is connected to the mounting bracket and has a first air outlet;

[0008] And a second air knife assembly, which is connected to the first air knife assembly and has a second air outlet;

[0009] The first and second air outlets are both directed toward the laser beam output by the laser processing equipment, and the airflow is output through the first and second air outlets, which are located at different heights.

[0010] Preferably, the first air knife assembly includes:

[0011] A first air knife support, which is connected to the mounting bracket;

[0012] The first air knife body is connected to the first air knife support and has a first air outlet;

[0013] And a first air inlet connector, which is connected to the first air knife body and communicates with the interior of the first air knife body.

[0014] Preferably, the second air knife assembly includes:

[0015] The second air knife support is connected to the first air knife assembly;

[0016] The second air knife body is connected to the second air knife support and forms the second air outlet;

[0017] And a second air inlet connector, which is connected to the second air knife body and communicates with the interior of the second air knife body.

[0018] Preferably, the air knife structure further includes:

[0019] The third air knife assembly is connected to the laser processing equipment and / or the mounting bracket and / or the first air knife assembly and / or the second air knife assembly, and has a light-transmitting space for the laser beam to pass through, and has several air vents for airflow output.

[0020] Preferably, the third air knife assembly includes:

[0021] The third air knife support connects the laser processing equipment and / or the mounting bracket and / or the first air knife assembly and / or the second air knife assembly;

[0022] A tubular component, which connects to the third air knife support, and forms a light-transmitting space through which the laser beam passes by enclosing it, and has several vent holes for airflow output;

[0023] And a third air intake connector, which is connected to the tubular component and communicates with the interior of the tubular component.

[0024] Preferably, the air knife structure further includes:

[0025] The first blocking element, which connects to the laser processing equipment and / or the mounting bracket and / or the first air knife assembly and / or the second air knife assembly, is used to prevent dust and / or spatter generated during laser processing from contacting the galvanometer lens of the laser processing equipment, and has a through hole for the laser beam to pass through.

[0026] Preferably, the first blocking member includes:

[0027] A blocking bracket that connects to laser processing equipment and / or a mounting bracket and / or a first air knife assembly and / or a second air knife assembly;

[0028] And a baffle, which is connected to the blocking member support and has a through hole for the laser beam to pass through, and is located below the galvanometer lens of the laser processing equipment.

[0029] Preferably, the air knife structure further includes a second blocking member, which is connected to the mounting bracket and is parallel to the propagation direction of the laser beam, and the second blocking member has a through hole.

[0030] Preferably, the height of one or more of the mounting bracket, the first air knife assembly, the second air knife assembly, the third air knife assembly, and the first blocking member is adjustable, and / or the second air knife body of the second air knife assembly is rotatable.

[0031] On the other hand, a laser processing device is also provided, which includes the above-mentioned air knife structure and laser processing equipment, wherein the laser processing equipment is used to output a laser beam acting on the workpiece to be processed.

[0032] The beneficial effects of this utility model are:

[0033] This invention allows for the placement of different air knife bodies at varying heights, creating airflows directed towards the laser beam through multiple air outlets. This airflow, via air curtains, removes dust and spatter generated during laser processing, preventing contamination and damage to the galvanometer lens. Simultaneously, by dispersing plasma over a large area, it enhances the penetration capability of the laser beam during laser processing, thereby improving processing quality. Attached Figure Description

[0034] The present invention will be further described below with reference to the accompanying drawings.

[0035] Figure 1 This is an overall structural diagram of the laser processing equipment in this utility model;

[0036] Figure 2 This is an overall structural diagram of the first air knife assembly in this utility model;

[0037] Figure 3 This is an overall structural diagram of the second air knife assembly in this utility model;

[0038] Figure 4 This is an overall structural diagram of the third air knife assembly in this utility model;

[0039] Figure 5 This is an overall structural diagram of the first blocking component in this utility model;

[0040] Figure 6 This is an overall structural diagram of the mounting bracket and the second blocking component in this utility model. Detailed Implementation

[0041] The present invention will now be further described with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0042] Example 1:

[0043] like Figure 1 As shown, this embodiment provides an air knife structure, which includes:

[0044] Mounting bracket 1 is connected to laser processing equipment 100;

[0045] The first air knife assembly 2 is connected to the mounting bracket 1 and has a first air outlet 21;

[0046] And, a second air knife assembly 3, which is connected to the first air knife assembly 2 and has a second air outlet 31;

[0047] The first air outlet 21 and the second air outlet 31 are both directed toward the laser beam L output by the laser processing equipment 100, and the airflow is output through the first air outlet 21 and the second air outlet 31 to form an air curtain. At the same time, the first air outlet 21 and the second air outlet 31 are located at different heights. The laser beam L is used for laser processing, which includes any one of laser welding, laser cutting, and laser cleaning.

[0048] Furthermore, such as Figure 2 As shown, the first air knife assembly 2 includes:

[0049] The first air knife support 22 is connected to the mounting bracket 1;

[0050] The first air knife body 23 is connected to the first air knife support 22 and has a strip-shaped first air outlet 21;

[0051] The first air inlet connector 24 is connected to the first air knife body 23 and communicates with the interior of the first air knife body 23;

[0052] Airflow enters the interior of the first air knife body 23 through the first air inlet connector 24 and is output from the first air outlet 21 to form an air curtain.

[0053] like Figure 3 As shown, the second air knife assembly 3 includes:

[0054] The second air knife support 32 is connected to the first air knife support 22 of the first air knife assembly 2;

[0055] The second air knife body 33 is connected to the second air knife support 32 and has a strip-shaped second air outlet 31.

[0056] The second air inlet connector 34 is connected to the second air knife body 33 and communicates with the interior of the second air knife body 33;

[0057] Airflow enters the interior of the second air knife body 33 through the second air inlet connector 34 and exits from the second air outlet 31 to form an air curtain.

[0058] Therefore, in this embodiment, different air knife bodies can be set at different height positions to form airflows towards the laser beam output at different positions through multiple air outlets. This airflows blow away dust and splashes generated during laser processing through air curtains, avoiding contamination and damage to the galvanometer lens. At the same time, by blowing away plasma in a large area, the penetration ability of the laser beam during laser processing is improved, thereby improving the processing quality.

[0059] Example 2:

[0060] The only difference between this embodiment and Embodiment 1 is that, Figure 1 As shown in Figures 4-5, the air knife structure further includes:

[0061] The third air knife assembly 4 is connected to the laser processing equipment 100 and / or the mounting bracket 1 and / or the first air knife support 22 of the first air knife assembly 2 and / or the second air knife support 32 of the second air knife assembly 3, and forms a light-transmitting space 42 for the laser beam L to pass through, and has a plurality of air vents 41 for airflow output, and at least some of the air vents 41 face the workpiece being processed, and / or, at least some of the air vents 41 face different directions;

[0062] The first blocking member 5, which connects the first air knife support 22 of the laser processing equipment 100 and / or the mounting bracket 1 and / or the first air knife assembly 2 and / or the second air knife support 32 of the second air knife assembly 3, is used to prevent dust and / or splashes generated during laser processing from contacting the galvanometer lens of the laser processing equipment 100, and has a through hole 51 for the laser beam L to pass through.

[0063] In addition, a second blocking member 6 is connected to the mounting bracket 1 and is parallel to the propagation direction of the laser beam L. In this embodiment, the second blocking member 6 has a through hole.

[0064] Specifically, such as Figure 4 As shown, the third air knife assembly 4 includes:

[0065] The third air knife support 43 is connected to the laser processing equipment 100 and / or the mounting bracket 1 and / or the first air knife support 22 of the first air knife assembly 2 and / or the second air knife support 32 of the second air knife assembly 3.

[0066] The tubular component 44 is connected to the third air knife support 43 and forms a light-transmitting space 42 through which the laser beam L passes by, and has a plurality of air vents 41 for airflow output; preferably, the tubular component 44, the first air outlet 21, and the second air outlet 31 are located at different heights, and the tubular component 44 is a ring structure.

[0067] The third air intake connector 45 is connected to the tubular component 44 and communicates with the interior of the tubular component 44;

[0068] Airflow enters the interior of the tubular component 44 through the third air inlet connector 45 and exits from the vent 41.

[0069] like Figure 5 As shown, the first blocking member 5 includes:

[0070] The blocking bracket 52 is connected to the laser processing equipment 100 and / or the mounting bracket 1 and / or the first air knife bracket 22 of the first air knife assembly 2 and / or the second air knife bracket 32 ​​of the second air knife assembly 3.

[0071] The baffle 53 is connected to the blocking member bracket 52 and has a through hole 51 for the laser beam L to pass through. The baffle 53 is located below the galvanometer lens of the laser processing equipment 100 and between the tubular member 44 and the galvanometer lens of the laser processing equipment 100. The through hole 51 and the light-transmitting space 42 are coaxially arranged.

[0072] Therefore, in this embodiment, a third air knife assembly is also used to spray air into different areas to further reduce the impact of dust and splashes on the galvanometer lens. At the same time, the plasma in the processing area can be dispersed by blowing air through the vents toward the workpiece, thereby improving the penetration capability of the laser beam.

[0073] Meanwhile, the blocking effect on dust and splashes is enhanced by the first and second blocking components, and the second blocking component can be provided with holes so as not to block the air flow, thereby further reducing the adhesion of dust and smoke particles on the surface of the galvanometer lens through the air flow.

[0074] Example 3:

[0075] The only difference between this embodiment and embodiment 2 is that the height of one or more of the mounting bracket 1, the first air knife assembly 2, the second air knife assembly 3, the third air knife assembly 4, and the first blocking member 5 is adjustable, and / or the second air knife body 33 of the second air knife assembly 3 is rotatable, thereby adjusting the jet angle of the second air outlet 31.

[0076] Specifically, such as Figure 6As shown, the mounting bracket 1 has several waist-shaped holes 7 extending along the height direction. The same fastener 8 (such as screws, bolts, etc.) can pass through different positions of the same waist-shaped hole 7 or through different waist-shaped holes 7 to connect the mounting bracket 1 to the laser processing equipment 100, so that the mounting bracket 1 and the second blocking member 6 are located at different height positions as a whole.

[0077] like Figure 2 As shown, the first air knife bracket 22 has several waist-shaped holes 7 extending along the height direction. The first air knife bracket 22 can be connected to the mounting bracket 1 by passing the same fastener 8 (such as screw, bolt, etc.) through different positions of the same waist-shaped hole 7 or through different waist-shaped holes 7, so that the first air knife assembly 2 is located at different height positions.

[0078] At the same time, such as Figure 3 As shown, the second air knife holder 32 includes:

[0079] The support body 323 is connected to the second air knife body 33;

[0080] The protrusion 322 is connected to the support body 323 and has an arc-shaped hole 3221. In this embodiment, the support body 323 and the protrusion 322 can be integrally formed.

[0081] The adapter 321 is connected to the first air knife bracket 22 of the first air knife assembly 2 and has a mounting hole 3211.

[0082] The second air knife bracket 32 ​​is connected to the first air knife bracket 22 of the first air knife assembly 2 by fasteners 8 (such as screws, bolts, etc.) passing through the mounting hole 3211. Since the height of the first air knife assembly 2 is adjustable, the height of the second air knife assembly 3 is also adjustable. Furthermore, the connecting part 321 and the protrusion 322 are rotatably connected by a shaft-like workpiece (such as a rotating shaft, pin, etc.) passing through the arc-shaped hole 3221 and the adapter part 321. Therefore, the bracket body 323, the second air knife body 33, and the protrusion 322 can rotate relative to the adapter part 321.

[0083] like Figure 4 As shown, the third air knife support 43 has several waist-shaped holes 7 extending along the height direction. The same fastener 8 (such as screws, bolts, etc.) can pass through different positions of the same waist-shaped hole 7 or through different waist-shaped holes 7 to connect the third air knife support 43 to the laser processing equipment 100 and / or the mounting bracket 1 and / or the first air knife support 22 of the first air knife assembly 2 and / or the second air knife support 32 of the second air knife assembly 3, so that the third air knife assembly 4 is located at different height positions.

[0084] like Figure 5As shown, the blocking member bracket 52 has several waist-shaped holes 7 extending along the height direction. The same fastener 8 (such as screw, bolt, etc.) can pass through different positions of the same waist-shaped hole 7 or through different waist-shaped holes 7 to connect the blocking member bracket 52 to the laser processing equipment 100 and / or the mounting bracket 1 and / or the first air knife bracket 22 of the first air knife assembly 2 and / or the second air knife bracket 32 ​​of the second air knife assembly 3, so that the first blocking member 5 is located at different height positions.

[0085] Example 4:

[0086] This embodiment provides a laser processing device, which includes the air knife structure described in any one of embodiments 1-3 and a laser processing device 100. The laser processing device 100 is used to output a laser beam L that acts on the workpiece to be processed, and the laser beam L passes through the light-transmitting space 42 and the through hole 51 in sequence. The laser processing includes any one of laser welding, laser cutting, and laser cleaning.

[0087] In summary, this utility model can set different air knife bodies at different height positions to form airflows towards the laser beam output through multiple air outlets at different positions. This airflows can blow away dust and splashes generated during laser processing through air curtains, avoiding contamination and damage to the galvanometer lens. At the same time, by blowing away plasma in a large area, the penetration ability of the laser beam during laser processing is improved, thereby improving the processing quality.

[0088] It should be noted that the technical features in embodiments 1 to 4 above can be combined arbitrarily, and the resulting technical solutions all fall within the protection scope of this application. Furthermore, in this document, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or device comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or device comprising said element.

[0089] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An air knife structure, characterized in that, include: Mounting bracket, which connects to laser processing equipment; A first air knife assembly is connected to the mounting bracket and has a first air outlet; And a second air knife assembly, which is connected to the first air knife assembly and has a second air outlet; The first and second air outlets are both directed toward the laser beam output by the laser processing equipment, and the airflow is output through the first and second air outlets, which are located at different heights.

2. The air knife structure as described in claim 1, characterized in that, The first air knife assembly includes: A first air knife support, which is connected to the mounting bracket; The first air knife body is connected to the first air knife support and has a first air outlet; And a first air inlet connector, which is connected to the first air knife body and communicates with the interior of the first air knife body.

3. The air knife structure as described in claim 1, characterized in that, The second air knife assembly includes: The second air knife support is connected to the first air knife assembly; The second air knife body is connected to the second air knife support and forms the second air outlet; And a second air inlet connector, which is connected to the second air knife body and communicates with the interior of the second air knife body.

4. The air knife structure as described in claim 1, characterized in that, The air knife structure also includes: The third air knife assembly is connected to the laser processing equipment and / or the mounting bracket and / or the first air knife assembly and / or the second air knife assembly, and has a light-transmitting space for the laser beam to pass through, and has several air vents for airflow output.

5. The air knife structure as described in claim 4, characterized in that, The third air knife assembly includes: The third air knife support connects the laser processing equipment and / or the mounting bracket and / or the first air knife assembly and / or the second air knife assembly; A tubular component, which connects to the third air knife support, and forms a light-transmitting space through which the laser beam passes by enclosing it, and has several vent holes for airflow output; And a third air intake connector, which is connected to the tubular component and communicates with the interior of the tubular component.

6. The air knife structure as described in claim 1, characterized in that, The air knife structure also includes: The first blocking element, which connects to the laser processing equipment and / or the mounting bracket and / or the first air knife assembly and / or the second air knife assembly, is used to prevent dust and / or spatter generated during laser processing from contacting the galvanometer lens of the laser processing equipment, and has a through hole for the laser beam to pass through.

7. The air knife structure as described in claim 6, characterized in that, The first blocking member includes: A blocking bracket that connects to laser processing equipment and / or a mounting bracket and / or a first air knife assembly and / or a second air knife assembly; And a baffle, which is connected to the blocking member support and has a through hole for the laser beam to pass through, and is located below the galvanometer lens of the laser processing equipment.

8. The air knife structure as described in claim 1, characterized in that, The air knife structure further includes a second blocking member, which is connected to the mounting bracket and is parallel to the propagation direction of the laser beam, and the second blocking member has a through hole.

9. The air knife structure as described in claim 2, characterized in that, The height of one or more of the mounting bracket, the first air knife assembly, the second air knife assembly, the third air knife assembly, and the first blocking member is adjustable, and / or the second air knife body of the second air knife assembly is rotatable.

10. A laser processing device, characterized in that, The invention includes the air knife structure and laser processing equipment as described in any one of claims 1-9, wherein the laser processing equipment is used to output a laser beam that acts on the workpiece to be processed.

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