A dustproof device for a laser output port of a laser cutting machine

Abstract

The utility model relates to a laser cutting machine laser output port dustproof device, include: the hanging plate subassembly of detachable installation in the outside of laser output port, with the base subassembly of hanging plate subassembly connection, the air duct and the annular cavity that surrounds the lower end of laser output port are formed in the base subassembly inside, the lateral wall on annular cavity is equipped with the exhaust gap, the air duct is used for guiding the outside air to annular cavity, and the airflow generating element that is arranged in the air duct is configured as outside air is inhaled into the air duct, is transported to annular cavity after pressurization, makes pressurized air spouts from the exhaust gap. Compared with prior art, the utility model has the advantages of being able to directly, effectively prevent smoke and dust from accumulating at the laser output port lens, and the device has simple structure, easy to install and maintain, etc.

Description

Technical Field

[0001] This utility model relates to a dustproof device, and more particularly to a dustproof device for the laser output port of a laser cutting machine. Background Technology

[0002] Laser cutting technology, as a high-precision and high-efficiency modern processing method, has been widely used in the processing of metals and non-metals. During laser cutting, a high-energy-density laser beam irradiates the workpiece, causing the material to rapidly melt, vaporize, or reach its ignition point. Simultaneously, a high-speed airflow coaxial with the laser beam blows away the molten material, thus achieving cutting. However, this process inevitably generates a large amount of high-temperature fumes and dust rich in molten particles.

[0003] These harmful fumes and dust particles diffuse upwards and adhere to the surfaces of the optical lenses (especially protective and focusing lenses) inside the laser output port of the laser cutting machine. Lens contamination significantly reduces the transmittance and focusing performance of the laser beam, leading to quality problems such as weakened cutting ability, uneven kerfs, and rough cut surfaces. In severe cases, it can even damage expensive optical components due to heat buildup. To ensure normal equipment operation and processing quality, operators must periodically stop the machine, disassemble the laser output head, and clean and maintain the internal lenses. Existing maintenance methods have significant drawbacks: First, the cleaning process is cumbersome, requiring the equipment to be completely powered off and cooled. Operators need to receive professional training and use specialized tools and cleaning agents for delicate operations, which is time-consuming and seriously affects equipment utilization and production efficiency. Second, frequent disassembly and installation not only increases the labor intensity of workers but also increases the risk of secondary contamination or mechanical damage due to improper operation, such as lens scratches, coating damage, or improper installation.

[0004] To address the aforementioned issues, some existing technologies employ external ventilation and dust removal equipment near the cutting head. However, such systems are often complex in structure, occupy a large space, and are costly. Furthermore, their effectiveness in blocking fine dust particles that rise upwards and directly adhere to the output lens is limited. Therefore, there is an urgent need in the field for a device that can directly and effectively prevent the accumulation of smoke and dust at the laser output lens, while also being simple in structure and easy to install and maintain. Utility Model Content

[0005] The purpose of this utility model is to overcome the defects of the prior art and provide a dustproof device for the laser output port of a laser cutting machine, which can directly and effectively prevent smoke and dust from accumulating at the laser output port lens, and is a simple and easy-to-install and maintain device.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A dustproof device for the laser output port of a laser cutting machine, comprising:

[0008] A detachable mounting plate assembly installed on the outside of the laser output port;

[0009] The base assembly connected to the mounting plate assembly has an air duct and an annular cavity surrounding the lower end of the laser output port inside the base assembly. The annular cavity has exhaust slits on its sidewalls. The air duct is used to guide external air into the annular cavity.

[0010] And an airflow generating element disposed in the air duct, which is configured to draw in external air into the air duct during operation, pressurize it and deliver it to the annular cavity, so that the pressurized air is ejected from the exhaust gap.

[0011] Furthermore, the side wall of the laser output port is provided with a connector for connecting to the mounting plate assembly;

[0012] The mounting plate assembly includes an upper mounting plate and a lower mounting plate for clamping the connector, and the lower mounting plate is connected to the base assembly.

[0013] Furthermore, the connector is an L-shaped connecting rod.

[0014] Furthermore, the upper and lower mounting plates are connected by a first fastener.

[0015] Furthermore, the first fastener is a bolt.

[0016] Furthermore, the base assembly includes a detachably fixed base and a base cover plate, which together enclose the air duct and cavity.

[0017] Furthermore, the base and the base cover are connected by a second fastener.

[0018] Furthermore, the second fastener is a bolt.

[0019] Furthermore, the base cover plate is provided with an air inlet that communicates with the air duct.

[0020] Furthermore, the exhaust slit is arranged in a ring shape on the inner sidewall of the annular cavity.

[0021] Furthermore, the width of the annular exhaust slit is 0.1-1 mm.

[0022] Furthermore, the exhaust direction of the exhaust slit is parallel to or has an inward tilt angle of 0.5° to 5° with the laser beam axis of the laser output port.

[0023] Furthermore, the airflow generating element is an axial fan or a centrifugal fan.

[0024] Furthermore, the airflow generating element, power supply, and switch are connected in series via wires to form a power supply circuit.

[0025] Furthermore, the power source is a rechargeable battery or a dry cell battery, housed within a battery compartment of the base assembly. The battery compartment is connected to the base cover plate.

[0026] Furthermore, the switch is a mechanical toggle switch or a push-button switch, partially embedded in the side wall of the base assembly.

[0027] Compared with the prior art, the present invention has the following advantages:

[0028] (1) When the laser cutting machine processes products, the smoke and dust generated by the cutting material are dispersed by the dust removal device installed at the laser output port, thereby reducing the pollution of the laser output port lens by smoke and dust, extending the lens disassembly and cleaning cycle, ensuring continuous production, and improving production efficiency. At the same time, it reduces the frequency of lens disassembly, thereby reducing the probability of secondary contamination of the lens caused by improper disassembly and cleaning by operators.

[0029] (2) This invention forms a directional air curtain below the laser output port, fundamentally blocking the path of rising smoke and dust, transforming traditional periodic shutdown cleaning into continuous online protection. This not only extends the service life of optical lenses and reduces cleaning frequency, but more importantly, it avoids frequent interruptions in the production process, improving equipment utilization and production efficiency. Simultaneously, it reduces the risk of lens damage caused by improper manual cleaning, demonstrating significant economic benefits and practical value.

[0030] (3) The high-speed airflow generated by the airflow generating element is accelerated by the annular cavity and then ejected from the exhaust gap in a uniform laminar flow state. This extremely narrow gap design significantly improves the airflow speed and forms a continuous and stable air curtain that can completely cover the working area below the laser output port.

[0031] (4) The exhaust direction of the exhaust slit described in this utility model is parallel to the laser beam axis of the laser output port or has an inward tilt angle of 0.5° to 5°, which ensures that the laser processing accuracy is not affected while blocking dust, thus achieving a perfect balance between dust prevention and processing quality.

[0032] (5) This utility model uses an upper and lower hanging plate to clamp the connecting piece on the side wall of the laser output port, and then uses a first fastener to achieve quick locking. This achieves a non-destructive connection with the laser output port, avoiding damage to the equipment body caused by traditional welding or gluing methods, and also provides strong adaptability, compatible with different models of laser cutting machines. The bolt connection method makes the installation and disassembly process simple and quick, greatly reducing the threshold for use and maintenance time.

[0033] (6) The base and base cover of this utility model are detachably connected by a second fastener to form a modular structure. This facilitates regular cleaning of dust accumulation in the air duct and allows for easy replacement of the airflow generating element or power supply. The air inlet design ensures efficient air intake and facilitates the installation of a filter device. All connections use standard fasteners, eliminating the need for special tools during maintenance and significantly reducing the lifecycle cost of the equipment. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the dustproof device shown in Example 2;

[0035] Figure 2 This is a structural schematic diagram of the dustproof device shown in Example 2 from another perspective;

[0036] Figure 3 This is an exploded view of the dustproof device shown in Example 2;

[0037] Figure 4 This is a schematic diagram of the laser output port structure shown in Example 2;

[0038] Figure 5 This is a top view of the base cover plate shown in Example 2;

[0039] Figure 6 This is a schematic diagram of the structure after the dustproof device and laser output port are installed, as shown in Example 2.

[0040] Explanation of markings in the diagram:

[0041] 1-Laser output port, 11-Connector;

[0042] 2-Hanging plate assembly, 21-Upper hanging plate, 22-Lower hanging plate, 23-First fastener;

[0043] 3-Base assembly, 31-Air duct, 311-Air inlet, 32-Annular cavity, 321-Exhaust gap, 33-Base, 34-Base cover plate, 35-Second fastener;

[0044] 4-Airflow generating element;

[0045] 5-Power supply, 51-Switch. Detailed Implementation

[0046] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The embodiments are implemented based on the technical solution of the present invention, providing detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments. In the following embodiments or examples, unless otherwise specified, the functional components or structures are conventional components or structures used in the art to achieve the corresponding functions.

[0047] It should be noted that in the description of this utility model, the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0048] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0049] A dustproof device for the laser output port of a laser cutting machine, comprising:

[0050] A detachable mounting plate assembly 2 installed on the outside of the laser output port 1;

[0051] The base assembly 3 is connected to the mounting plate assembly 2. The base assembly 3 has an air duct 31 and an annular cavity 32 surrounding the lower end of the laser output port 1. An exhaust slit 321 is provided on the side wall of the annular cavity 32. The air duct 31 is used to guide external air into the annular cavity 32.

[0052] And an airflow generating element 4 disposed in the air duct 31, which is configured to draw in external air into the air duct 31 during operation, pressurize it and deliver it to the annular cavity 32, so that the pressurized air is ejected from the exhaust gap 321.

[0053] In some specific embodiments, the sidewall of the laser output port 1 is provided with a connector 11 that is connected to the mounting plate assembly 2;

[0054] The mounting plate assembly 2 includes an upper mounting plate 21 and a lower mounting plate 22 for clamping the connector 11, and the lower mounting plate 22 is connected to the base assembly 3.

[0055] In some specific embodiments, the connector 11 is an L-shaped connecting rod.

[0056] In some specific embodiments, the upper mounting plate 21 and the lower mounting plate 22 are connected by a first fastener 23.

[0057] In some specific embodiments, the first fastener 23 is a bolt.

[0058] In some specific embodiments, the base assembly 3 includes a detachably fixed base 33 and a base cover plate 34, which together enclose the air duct 31 and the cavity 32.

[0059] In some specific embodiments, the base 33 and the base cover 34 are connected by a second fastener 35.

[0060] In some specific embodiments, the second fastener 35 is a bolt.

[0061] In some specific embodiments, the base cover plate 34 is provided with an air inlet 311 that communicates with the air duct 31.

[0062] In some specific embodiments, the exhaust slit 321 is arranged in a ring shape on the inner sidewall of the annular cavity 32.

[0063] In some specific embodiments, the width of the annular exhaust slit 321 is 0.1-1 mm.

[0064] In some specific embodiments, the exhaust direction of the exhaust slit 321 is parallel to the laser beam axis of the laser output port 1 or has an inward tilt angle of 0.5° to 5°.

[0065] In some specific embodiments, the airflow generating element 4 is an axial fan or a centrifugal fan.

[0066] In some specific embodiments, the airflow generating element 4, the power supply 5, and the switch 51 are connected in series with wires to form a power supply circuit.

[0067] In some specific embodiments, the power source 5 is a rechargeable battery or a dry cell battery, housed in the battery slot 36 of the base assembly 3. The battery slot 36 is connected to the base cover plate 34.

[0068] In some specific embodiments, the switch 51 is a mechanical toggle switch or a push-button switch, which is partially embedded in the side wall of the base assembly 3.

[0069] Each of the above embodiments can be implemented individually or in any combination of two or more.

[0070] The following description uses specific examples to illustrate the point.

[0071] Example 1

[0072] A dustproof device for the laser output port of a laser cutting machine, comprising:

[0073] A detachable mounting plate assembly 2 installed on the outside of the laser output port 1;

[0074] The base assembly 3 is connected to the mounting plate assembly 2. The base assembly 3 has an air duct 31 and an annular cavity 32 surrounding the lower end of the laser output port 1. An exhaust slit 321 is provided on the side wall of the annular cavity 32. The air duct 31 is used to guide external air into the annular cavity 32.

[0075] And an airflow generating element 4 disposed in the air duct 31, which is configured to draw in external air into the air duct 31 during operation, pressurize it and deliver it to the annular cavity 32, so that the pressurized air is ejected from the exhaust gap 321.

[0076] In this embodiment, the side wall of the laser output port 1 is provided with a connector 11 that is connected to the mounting plate assembly 2;

[0077] The mounting plate assembly 2 includes an upper mounting plate 21 and a lower mounting plate 22 for clamping the connector 11, and the lower mounting plate 22 is connected to the base assembly 3.

[0078] In this embodiment, the connector 11 is an L-shaped connecting rod.

[0079] In this embodiment, the upper mounting plate 21 and the lower mounting plate 22 are connected by a first fastener 23.

[0080] In this embodiment, the first fastener 23 is a bolt.

[0081] In this embodiment, the base assembly 3 includes a detachably fixed base 33 and a base cover plate 34, which together enclose the air duct 31 and the cavity 32.

[0082] In this embodiment, the base 33 and the base cover plate 34 are connected by a second fastener 35.

[0083] In this embodiment, the second fastener 35 is a bolt.

[0084] In this embodiment, the base cover plate 34 is provided with an air inlet 311 that communicates with the air duct 31. The air inlet 311 is rectangular in shape, and there are 8 of them, with 4 symmetrically arranged on each side of the base cover plate 34.

[0085] In this embodiment, the airflow generating element 4 is an axial fan.

[0086] In this embodiment, the airflow generating element 4, the power supply 5, and the switch 51 are connected in series with wires to form a power supply circuit.

[0087] In this embodiment, the power source 5 is a rechargeable battery, housed within the battery slot 36 of the base assembly 3. The battery slot 36 is connected to the base cover plate 34.

[0088] In this embodiment, the switch 51 is a push-button switch, which is partially embedded in the side wall of the base assembly 3.

[0089] In this embodiment, the working principle of the dustproof device is as follows:

[0090] The dustproof device is quickly installed via the mounting plate assembly 3. First, the upper mounting plate 21 and lower mounting plate 22 are clamped onto the connector 11 on the side of the laser output port 1 and secured with the first fastener 23. After installation, the operator starts the device via the trigger switch 51, and the power supply 5 powers the airflow generating element 4, initiating the working cycle. Once the airflow generating element 4 is activated, external air is drawn into the air duct 31 through the air inlet 311 on the base cover plate 34. The air is accelerated and pressurized within the air duct 31 by the airflow generating element 4 and then transported to the annular cavity 32 inside the base assembly 3. The entire airflow process is completed within a sealed space, ensuring no airflow leakage and minimal pressure loss. After reaching the annular cavity 32, the pressurized air is ejected at high speed and evenly through the annular exhaust slit 321 on the inner wall, thereby dispersing and removing smoke and dust below the laser output port.

[0091] Example 2

[0092] A dustproof device for the laser output port of a laser cutting machine, such as Figures 1-3 As shown, it includes:

[0093] A detachable mounting plate assembly 2 installed on the outside of the laser output port 1;

[0094] The base assembly 3 is connected to the mounting plate assembly 2. The base assembly 3 has an air duct 31 and an annular cavity 32 surrounding the lower end of the laser output port 1. An annular exhaust slit 321 is provided on the side wall of the annular cavity 32. The air duct 31 is used to guide external air to the annular cavity 32.

[0095] The airflow generating element 4, which is installed in the air duct 31, is configured to draw in external air into the air duct 31 during operation, pressurize it and deliver it to the annular cavity 32, so that the pressurized air is ejected from the exhaust gap 321 to form an air curtain covering the area below the laser output port 1 to block smoke and dust, thereby achieving dust prevention.

[0096] In this embodiment, as Figure 4 As shown, the side wall of the laser output port 1 is provided with a connector 11 that connects to the mounting plate assembly 2;

[0097] The mounting plate assembly 2 includes an upper mounting plate 21 and a lower mounting plate 22 for clamping the connector 11, and the lower mounting plate 22 is connected to the base assembly 3.

[0098] In this embodiment, the connector 11 is an L-shaped connecting rod.

[0099] In this embodiment, the upper mounting plate 21 and the lower mounting plate 22 are connected by a first fastener 23.

[0100] In this embodiment, the first fastener 23 is a bolt.

[0101] In this embodiment, as Figure 5 As shown, the base assembly 3 includes a detachably fixed base 33 and a base cover plate 34, which together enclose the air duct 31 and the cavity 32.

[0102] In this embodiment, the base 33 and the base cover plate 34 are connected by a second fastener 35.

[0103] In this embodiment, the second fastener 35 is a bolt.

[0104] In this embodiment, the base cover plate 34 is provided with an air inlet 311 that communicates with the air duct 31. The air inlet 311 is rectangular in shape, and there are 8 of them, with 4 symmetrically arranged on each side of the base cover plate 34.

[0105] In this embodiment, the width of the annular exhaust slit 321 is 0.5 mm.

[0106] In this embodiment, the airflow generating element 4 is an axial fan.

[0107] In this embodiment, the airflow generating element 4, the power supply 5, and the switch 51 are connected in series with wires to form a power supply circuit.

[0108] In this embodiment, the power source 5 is a rechargeable battery, housed within the battery slot 36 of the base assembly 3. The battery slot 36 is connected to the base cover plate 34.

[0109] In this embodiment, the switch 51 is a push-button switch, which is partially embedded in the side wall of the base assembly 3.

[0110] In this embodiment, the working principle of the dustproof device is as follows:

[0111] like Figure 6As shown, the dustproof device is quickly installed via the mounting plate assembly 3. First, the upper mounting plate 21 and the lower mounting plate 22 are clamped onto the connector 11 on the side of the laser output port 1 and secured with the first fastener 23. After installation, the operator starts the device via the trigger switch 51, and the power supply 5 powers the airflow generating element 4, initiating the working cycle.

[0112] After the airflow generating element 4 is activated, external air is drawn into the air duct 31 through the air inlet 311 on the base cover plate 34. The air is accelerated and pressurized by the airflow generating element 4 within the air duct 31, and then transported to the annular cavity 32 inside the base assembly 3. The entire airflow transport process is completed within a sealed space, ensuring no airflow leakage and minimal pressure loss.

[0113] After being pressurized, the air reaches the annular cavity 32 and is ejected at high speed and uniformly through the annular exhaust slits 321 on the inner wall. Due to the annular design and precisely consistent width of the slits, the ejected airflow forms a continuous and stable cylindrical air curtain, completely surrounding the working area below the laser output port. The formed air curtain establishes an invisible barrier around the laser beam. The high-temperature fumes and dust generated during the cutting process are effectively blocked and dispersed by the air curtain as they rise, preventing them from reaching the optical lens area above. The continuous output of the air curtain ensures a stable protective effect throughout the entire processing.

[0114] Example 3

[0115] This embodiment further defines the embodiment based on embodiment 2, wherein the exhaust direction of the exhaust gap 321 is parallel to the angle between the exhaust direction and the laser beam axis of the laser output port 1.

[0116] Example 4

[0117] This embodiment further defines the embodiment based on embodiment 2, wherein the angle between the exhaust direction of the exhaust gap 321 and the laser beam axis of the laser output port 1 is 1° inward tilt.

[0118] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. A dustproof device for the laser output port of a laser cutting machine, characterized in that, include: A detachable mounting plate assembly (2) installed on the outside of the laser output port (1); The base assembly (3) is connected to the mounting plate assembly (2). The base assembly (3) has an air duct (31) and an annular cavity (32) surrounding the lower end of the laser output port (1). An exhaust slit (321) is provided on the side wall of the annular cavity (32). The air duct (31) is used to guide external air to the annular cavity (32). And an airflow generating element (4) disposed in the air duct (31), which is configured to draw external air into the air duct (31) during operation, pressurize it and deliver it to the annular cavity (32), so that the pressurized air is ejected from the exhaust gap (321).

2. The dustproof device for the laser output port of a laser cutting machine according to claim 1, characterized in that, The side wall of the laser output port (1) is provided with a connector (11) that is connected to the mounting plate assembly (2). The mounting plate assembly (2) includes an upper mounting plate (21) and a lower mounting plate (22) for clamping the connector (11), the lower mounting plate (22) being connected to the base assembly (3).

3. The dustproof device for the laser output port of a laser cutting machine according to claim 2, characterized in that, The upper mounting plate (21) and the lower mounting plate (22) are connected by a first fastener (23).

4. The dustproof device for the laser output port of a laser cutting machine according to claim 1, characterized in that, The base assembly (3) includes a detachably fixed base (33) and a base cover plate (34), which together enclose the air duct (31) and the cavity (32).

5. A dustproof device for the laser output port of a laser cutting machine according to claim 4, characterized in that, An air inlet (311) communicating with the air duct (31) is provided on the base cover plate (34).

6. A dustproof device for the laser output port of a laser cutting machine according to claim 1, characterized in that, The exhaust slit (321) is arranged in a ring shape on the inner side wall of the annular cavity (32).

7. A dustproof device for the laser output port of a laser cutting machine according to claim 1, characterized in that, The width of the exhaust slit (321) is 0.1-1mm.

8. A dustproof device for the laser output port of a laser cutting machine according to claim 1, characterized in that, The exhaust direction of the exhaust slit (321) is parallel to the laser beam axis of the laser output port (1) or has an inward tilt angle of 0.5° to 5°.

9. A dustproof device for the laser output port of a laser cutting machine according to claim 1, characterized in that, The airflow generating element (4) is an axial fan or a centrifugal fan.

10. A dustproof device for the laser output port of a laser cutting machine according to claim 9, characterized in that, The airflow generating element (4), power supply (5), and switch (51) are connected in series by wires to form a power supply circuit.

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