Extraction device and laser processing apparatus

Abstract

The application belongs to the technical field of laser processing and relates to an air extraction device and a laser processing equipment. The air extraction device provided by the application comprises a crossbeam and a plurality of air door assemblies. The crossbeam is movably arranged on a cutting machine tool and is provided with an air extraction channel connected with an external air extraction device and a plurality of first air extraction openings. The plurality of air door assemblies comprise a rotary driving member and a rotary air door. The rotary driving member is installed on the crossbeam and is in transmission connection with the rotary air door, so that the rotary air door is arranged at the first air extraction opening in a rotatable manner along the axial direction of the crossbeam. The rotary air door comprises a baffle plate and a second air extraction opening. The baffle plate is used for closing the first air extraction opening, and the second air extraction opening is used for being exposed from the first air extraction opening to extract dust. The laser processing equipment provided by the application comprises a cutting head and the air extraction device described above. Dust is extracted from the crossbeam, so that metal scraps can be prevented from being sucked into the air duct, and the production safety is improved.

Description

Technical Field

[0001] This application belongs to the field of laser processing technology, and more specifically, relates to a ventilation device and laser processing equipment. Background Technology

[0002] Laser cutting, as a highly efficient and precise method for processing sheet metal, has been widely used in manufacturing fields such as rail transportation, shipbuilding, engineering machinery, and sheet metal for home appliances. During the cutting process, the high-energy laser beam instantly melts and vaporizes the metal material, generating a large amount of high-temperature fumes and flying metal debris. To maintain a clear view of the processing area and prevent fumes from polluting the workshop environment, current technologies generally adopt a negative pressure dust removal solution of "exhaust fans on both sides of the cutting bed + dust collector (or fan)". However, metal debris during the cutting process is easily sucked into the air duct and causes blockage, and there is a risk of igniting the dust collector filter material. Utility Model Content

[0003] This application provides a ventilation device and laser processing equipment that extracts dust from the crossbeam, preventing metal debris from being sucked into the air duct and improving production safety.

[0004] The technical solution adopted in this application embodiment is: to provide an exhaust device, including:

[0005] A crossbeam, movably mounted on a cutting machine tool, is equipped with an exhaust duct connected to an external exhaust system and several primary exhaust ports; and

[0006] A plurality of damper assemblies, including a rotary drive and a rotary damper, wherein the rotary drive is mounted on the crossbeam and is throttle-connected to the rotary damper so that the rotary damper is rotatably disposed at the first exhaust port along the axial direction of the crossbeam; the rotary damper includes a baffle and a second exhaust port, wherein the baffle is used to close the first exhaust port and the second exhaust port is used to protrude from the first exhaust port for dust extraction.

[0007] Optionally, the rotating damper further includes an air inlet, a connecting member, and two first side sealing plates. The baffle, air inlet, and connecting member are connected in sequence to form an exhaust cavity. The two first side sealing plates are used to seal both ends of the exhaust cavity to prevent air leakage. The air inlet is provided with a second exhaust port, and the connecting member is provided with a ventilation opening. The ventilation opening is used to connect the exhaust channel and the second exhaust port.

[0008] Optionally, the area of ​​the baffle is larger than the area of ​​the first exhaust vent.

[0009] Optionally, the first side sealing plate is provided with a first sealing element for abutting against the edge of the first exhaust port.

[0010] Optionally, the air inlet is arc-shaped.

[0011] Optionally, a second side sealing plate is provided on both sides of the crossbeam to close the exhaust channel, and a second sealing element is provided at the connection between the second side sealing plate and the crossbeam.

[0012] Optionally, the second side panel is provided with a connector for connecting an external ventilation device.

[0013] Optionally, the rotary drive is mounted on the side of the crossbeam away from the laser cutting.

[0014] Optionally, the first exhaust vent is located on one side of the crossbeam near the cutting machine tool.

[0015] This application also provides a laser processing device, including a cutting head and the above-described exhaust device.

[0016] The beneficial effects of the exhaust device and laser processing equipment provided in this application embodiment are as follows: The exhaust device in this application embodiment sets the first exhaust port on the crossbeam, and the exhaust position is higher than the exhaust port originally set on the bed. During the dust extraction process, the cutting debris will fall due to gravity and cannot enter the exhaust channel, which can reduce the risk of igniting the dust collector filter material and improve production safety.

[0017] In addition, by rotating the rotary damper, the first exhaust port corresponding to the non-cutting area can be closed in real time during the movement of the crossbeam, leaving only the second exhaust port near the cutting point open, which can improve energy saving.

[0018] The laser processing equipment of this application embodiment includes the above-mentioned exhaust device, and therefore has the beneficial effects brought by the exhaust device, which will not be repeated here. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A three-dimensional structural schematic diagram of the ventilation device provided in an embodiment of this application;

[0021] Figure 2 Another perspective three-dimensional structural schematic diagram of the ventilation device provided in the embodiment of this application;

[0022] Figure 3This is a three-dimensional structural diagram of the beam used in the embodiments of this application;

[0023] Figure 4 This is a three-dimensional structural diagram of the rotary damper used in the embodiments of this application.

[0024] The following are the labeling elements in the figure:

[0025] 1. Crossbeam; 11. Exhaust duct; 12. First exhaust port; 13. Second side sealing plate; 14. Connecting parts;

[0026] 2. Damper assembly; 21. Rotary drive component; 22. Rotary damper; 221. Baffle; 222. Air inlet component; 2221. Second exhaust port; 223. Connecting component; 2231. Ventilation port; 224. First side sealing plate. Detailed Implementation

[0027] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0028] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0029] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0031] Please see Figures 1 to 4 The exhaust device provided in the embodiments of this application will now be described. The exhaust device provided in the embodiments of this application includes a crossbeam 1 and a plurality of damper assemblies 2.

[0032] A crossbeam 1 is movably mounted on a cutting machine tool and is equipped with an exhaust duct 11 connected to an external exhaust device and several first exhaust ports 12; and

[0033] Several damper assemblies 2 include a rotary drive 21 and a rotary damper 22. The rotary drive 21 is mounted on the crossbeam 1 and is connected to the rotary damper 22 in a transmission manner so that the rotary damper 22 is rotatably disposed at the first exhaust port 12 along the axial direction of the crossbeam 1. The rotary damper 22 includes a baffle 221 and a second exhaust port 2221. The baffle 221 is used to close the first exhaust port 12, and the second exhaust port 2221 is used to protrude from the first exhaust port 12 for dust extraction.

[0034] The cutting machine tool in this embodiment is used to hold the pipes or plates to be cut. The cutting device is movably mounted on the crossbeam 1, which spans the cutting machine tool and can be driven by a servo motor and a gear rack to move back and forth along the length of the cutting machine tool.

[0035] The crossbeam 1 can be a box-shaped body welded from steel plates. An exhaust channel 11 is provided along the length of the crossbeam 1 or along the width of the cutting machine tool. Multiple first exhaust ports 12 can be provided on the side wall of the crossbeam 1. The multiple first exhaust ports 12 are evenly distributed along the length of the crossbeam 1.

[0036] Install one damper assembly 2 at each of the 12 first exhaust vents.

[0037] The rotating damper 22 of the damper assembly 2 can be a plate made of stainless steel or other materials. The plate has a ventilation area and a closed area. The ventilation area has a second exhaust port 2221, and the closed area is a baffle 221. The rotating drive 21 can drive the rotating damper 22 to rotate, so that the second exhaust port 2221 on the rotating damper 22 is opposite to the first exhaust port 12 of the crossbeam 1 for dust extraction, or so that the baffle 221 on the rotating damper 22 is opposite to the first exhaust port 12 of the crossbeam 1 to close the exhaust passage 11.

[0038] The rotary drive component 21 can be a rotary motor or a rotary cylinder.

[0039] The exhaust device in this embodiment of the application sets the first exhaust port 12 on the crossbeam 1. The exhaust position is higher than the exhaust port originally set on the bed. During the dust extraction process, the cutting debris will fall due to gravity and cannot enter the exhaust channel 11, which can reduce the risk of igniting the dust collector filter material and improve production safety.

[0040] In addition, by rotating the rotating damper 22 driven by the rotating drive component 21, the first exhaust port 12 corresponding to the non-cutting area can be closed in real time during the movement of the crossbeam 1, leaving only the second exhaust port 2221 near the cutting point open, which can improve the energy-saving effect.

[0041] Please see Figure 4 The rotating damper 22 also includes an air inlet 222, a connecting member 223, and two first side sealing plates 224. The baffle 221, the air inlet 222, and the connecting member 223 are connected in sequence to form an exhaust cavity. The two first side sealing plates 224 are used to seal both ends of the exhaust cavity to prevent air leakage. The air inlet 222 is provided with a second exhaust port 2221, and the connecting member 223 is provided with a ventilation port 2231. The ventilation port 2231 is used to connect the exhaust channel 11 and the second exhaust port 2221.

[0042] In this embodiment, the rotating damper 22 is modularly designed for easy disassembly and replacement. In the exhaust mode, the first side sealing plate 224 can seal both ends of the exhaust cavity, so that the airflow can only enter the exhaust channel 11 from the second exhaust port 2221, concentrating the dust extraction airflow and improving the dust extraction effect.

[0043] The rotary drive component 21 can specifically be a cylinder, which is mounted on the crossbeam 1. Its drive shaft can be connected to the baffle 221 of the rotary damper 22 via a rotatable component such as a fisheye connector. The baffle 221 of the rotary damper 22 is connected to the edge of the first exhaust port 12 via a hinge. When the cylinder retracts, it pulls the rotary damper 22 to rotate axially along the crossbeam 1, exposing the second exhaust port 2221 located in the exhaust channel 11 to the crossbeam 1, thereby performing dust extraction. When the cylinder extends, it pushes the rotary damper 22 to rotate in the opposite direction axially along the crossbeam 1, pushing the second exhaust port 2221 into the exhaust channel 11, thereby closing the dust extraction channel.

[0044] The area of ​​baffle 221 is larger than the area of ​​the first exhaust vent 12.

[0045] In this way, when the first exhaust port 12 is closed to stop the exhaust, the baffle 221 is placed on the first exhaust port 12. The area of ​​the baffle 221 is larger than that of the first exhaust port 12, so that it can completely cover and extend beyond the edge of the first exhaust port 12 in the closed state, forming a "face-to-face" tight seal, further eliminating air leakage caused by manufacturing errors or thermal deformation.

[0046] The first side sealing plate 224 is provided with a first sealing element (not shown in the figure) for abutting against the edge of the first exhaust port 12.

[0047] A first sealing element is provided on the side of the first side sealing plate 224 that contacts the first exhaust port 12. When the rotating damper 22 is drawing air, the first sealing element can prevent air leakage caused by welding deformation or assembly gaps in the first side sealing plate 224, further concentrate the dust extraction airflow, and improve the dust extraction effect.

[0048] The first sealing element can specifically be a sealing strip.

[0049] By adding a first sealing element to the first side sealing plate 224, the exhaust device maintains an extremely low air leakage rate even under high negative pressure and high dust concentration conditions, providing a highly reliable and maintenance-free sealing solution for the dust control of laser cutting machines.

[0050] The air inlet component 222 is arc-shaped.

[0051] When the rotary drive 21 drives the rotary damper 22 to rotate along the axial direction of the crossbeam 1, the arc-shaped air inlet 222 can prevent interference with the edge of the first exhaust port 12.

[0052] Please see Figure 1 The crossbeam 1 has a second side sealing plate 13 with a closed exhaust channel 11 on both sides, and a second sealing element (not shown in the figure) is provided at the connection between the second side sealing plate 13 and the crossbeam 1.

[0053] In this embodiment, the two ends of the crossbeam 1 are modularly sealed, that is, a second side sealing plate 13 is detachably installed on both sides of the crossbeam 1 to seal the end opening of the exhaust channel 11, and a second sealing element is installed at the connection between the second side sealing plate 13 and the crossbeam 1 to achieve quick disassembly and assembly of the end face and zero leakage.

[0054] The second side sealing plate 13 is made of stainless steel plate, and its shape is adapted to the contour of the end face of the crossbeam 1. It can be connected to the end face of the crossbeam 1 by bolts or screws.

[0055] The second seal can be made of a solid round strip of high-temperature resistant silicone rubber. A sealing groove is milled on the end face of the second side sealing plate 13 facing the crossbeam 1. The groove width is slightly smaller than the diameter of the second seal to form an interference fit and prevent it from falling off.

[0056] The second side panel 13 is provided with a connector 14 for connecting an external ventilation device.

[0057] In this embodiment, the "connector 14" on the second side sealing plate 13 is designed in a standardized and modular manner, so that the pipeline interface between the crossbeam 1 and the external exhaust device (dust collector or fan) can be quickly plugged in and unplugged, and leakage is prevented.

[0058] Specifically, the connector 14 can be an integrally welded circular air outlet flange located in the center of the second side sealing plate 13, used to connect with the telescopic hose of the external exhaust device.

[0059] The rotary drive component 21 is mounted on the side of the crossbeam 1 away from the laser cutting.

[0060] This application embodiment avoids the high-temperature zone and spark path of laser cutting without adding any protective cover, which can improve the life of the rotary drive component 21, the reliability of the cable and the safety of maintenance, and provides a low-cost and highly available engineering solution for the long-term stable operation of the device.

[0061] The first exhaust vent 12 is located on one side of the crossbeam 1 near the cutting machine tool.

[0062] In this embodiment, the first exhaust port 12 is positioned at the bottom of the crossbeam 1, that is, on the side of the crossbeam 1 close to the cutting machine tool, so that the suction inlet is located on the upper surface of the cutting plate, so that the smoke and dust are sucked in as soon as they are generated, shortening the collection path of the smoke and dust and improving the collection efficiency.

[0063] The embodiments of this application complete efficient suction before the smoke and dust spread upward and mix with a large amount of air, which can reduce the required air volume and fan power. At the same time, it uses gravity and inertia to achieve automatic separation of molten slag, providing a low-energy and low-clogging smoke and dust control solution for laser cutting.

[0064] This application also provides a laser processing device, including a cutting head and the exhaust device in any of the above embodiments.

[0065] The laser processing equipment of this application includes the exhaust device in any of the above embodiments, and therefore has the beneficial effects brought by the exhaust device in any of the above embodiments, which will not be repeated here.

[0066] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A ventilation device, characterized in that, include: A crossbeam, movably mounted on a cutting machine tool, is equipped with an exhaust duct connected to an external exhaust system and several primary exhaust ports; and A plurality of damper assemblies, including a rotary drive and a rotary damper, wherein the rotary drive is mounted on the crossbeam and is throttle-connected to the rotary damper so that the rotary damper is rotatably disposed at the first exhaust port along the axial direction of the crossbeam; the rotary damper includes a baffle and a second exhaust port, wherein the baffle is used to close the first exhaust port and the second exhaust port is used to protrude from the first exhaust port for dust extraction.

2. The exhaust device according to claim 1, characterized in that, The rotating damper also includes an air inlet, a connecting member, and two first side sealing plates. The baffle, air inlet, and connecting member are connected in sequence to form an exhaust cavity. The two first side sealing plates are used to seal both ends of the exhaust cavity to prevent air leakage. The air inlet is provided with a second exhaust port, and the connecting member is provided with a ventilation opening. The ventilation opening is used to connect the exhaust channel and the second exhaust port.

3. The ventilation device according to claim 2, characterized in that, The area of ​​the baffle is larger than the area of ​​the first exhaust vent.

4. The exhaust device according to claim 2, characterized in that, The first side sealing plate is provided with a first sealing element for abutting against the edge of the first exhaust port.

5. The exhaust device according to claim 2, characterized in that, The air inlet component is arc-shaped.

6. The exhaust device according to claim 1, characterized in that, The crossbeam is provided with a second side sealing plate on both sides to close the exhaust channel, and a second sealing element is provided at the connection between the second side sealing plate and the crossbeam.

7. The exhaust device according to claim 6, characterized in that, The second side panel is provided with a connector for connecting an external ventilation device.

8. The exhaust device according to claim 1, characterized in that, The rotary drive is mounted on the side of the crossbeam away from the laser cutting.

9. The ventilation device according to claim 1, characterized in that, The first exhaust vent is located on one side of the crossbeam near the cutting machine tool.

10. A laser processing device, characterized in that, It includes a cutting head and the exhaust device as described in any one of claims 1-9.

Images