A laser welding apparatus

Abstract

The utility model discloses a kind of laser welding equipment, it is related to welding equipment technical field.The utility model includes: cabinet body, laser welding assembly is installed in the inner top wall of cabinet body, the inside bottom side of cabinet body is obliquely provided with guide plate, the position of the back of cabinet body corresponding guide plate is equipped with discharge port, the front of cabinet body is hinged with cabinet door above guide plate;Welding table is set in the inside of the cabinet body, and the bottom of the welding table is connected with support leg between the top surface of guide plate two sides;Mounting bin is communicated in the top rear side of cabinet body.The utility model greatly reduces dust, impurities etc. entering welding area by setting two-stage air filtration system, reduces the generation of porosity, inclusion etc. in welding process, avoids the interference of impurities to laser energy conduction, makes welding penetration, fusion width more uniform, to significantly improve the strength and stability of welded joint, ensure that welding quality reaches higher standard.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, specifically to a laser welding device. Background Technology

[0002] In practical applications of laser welding technology, for welding ordinary metal materials (non-high-purity metals such as titanium alloys, aluminum alloys, and other oxidation-sensitive materials), laser welding equipment is currently often placed directly in open-air or open workshop environments. While this arrangement simplifies the equipment installation process and reduces operating costs to some extent, it has significant technical drawbacks. Due to the lack of effective isolation measures in open-air or open workshop environments, dust and metal debris from processing can easily enter the laser welding area. When these impurities adhere to the welding area, they can lead to defects such as porosity and inclusions during welding, directly contaminating the weld joint. Furthermore, the presence of impurities can interfere with the normal transmission of laser energy, resulting in uneven weld penetration and width, severely affecting the strength and stability of the weld joint, and ultimately making it difficult to achieve the expected welding quality standards. Therefore, we propose a laser welding device to address these problems. Utility Model Content

[0003] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0004] A laser welding device, comprising:

[0005] The cabinet has laser welding components installed on the inner top wall. A guide plate is inclinedly arranged on the bottom side of the cabinet. A discharge port is opened on the back of the cabinet corresponding to the position of the guide plate. A cabinet door is hinged on the front of the cabinet above the guide plate.

[0006] A welding table is located inside the cabinet, and support legs are connected between the bottom two sides of the welding table and the top surface of the guide plate.

[0007] The installation compartment is connected to the rear top of the cabinet. The front of the installation compartment is connected to the installation cylinder at equal intervals. The interior of the installation cylinder is filled with the first filter material. The surface of the installation cylinder is evenly distributed with air holes.

[0008] A fixed cylinder is fixedly inserted inside the cabinet near the back panel. The front of the fixed cylinder has a first channel, which is directly opposite the top surface of the welding table. A blower is installed on the back of the cabinet. A guide pipe is connected between the air inlet of the blower and the fixed cylinder. The inside of the fixed cylinder is filled with a second filter material.

[0009] Furthermore, a baffle plate is hinged to the top of the discharge port.

[0010] Furthermore, both the first and second filter media are activated carbon rods.

[0011] Furthermore, a connecting pipe is provided on the front of the installation chamber, and the installation cylinder is threadedly connected to the connecting pipe.

[0012] Furthermore, the two ends of the fixed cylinder are open structures and are threadedly connected with cylinder caps.

[0013] Furthermore, the bottom surface of the fixed cylinder has a second channel.

[0014] Furthermore, none of the four sides of the welding station come into contact with the inner wall of the cabinet.

[0015] The beneficial effects of this utility model are as follows:

[0016] This invention employs a dual-stage air filtration system. An installation chamber and multiple installation cylinders filled with first-stage filter material are located on the rear top of the cabinet to filter external air entering the cabinet. Simultaneously, a fixed cylinder filled with second-stage filter material is located inside the cabinet near the back panel to purify air containing impurities. This dual-stage filtration design significantly reduces dust and impurities entering the welding area, minimizing defects such as porosity and inclusions during welding. It also prevents impurities from interfering with laser energy transmission, resulting in more uniform weld penetration and width. Consequently, it significantly improves the strength and stability of the weld joint, ensuring a high standard of welding quality. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is another three-dimensional structural schematic diagram of this utility model;

[0019] Figure 3 This is a top view of the present invention;

[0020] Figure 4 This is a utility model Figure 3 Schematic diagram of cross-section along the AA direction.

[0021] Attached reference numerals: 1. Cabinet body; 101. Discharge port; 102. Cabinet door; 2. Guide plate; 3. Welding table; 4. Support leg; 5. Installation chamber; 501. Connecting pipe; 6. Installation cylinder; 601. Air hole; 7. First filter material; 8. Fixing cylinder; 801. First channel; 802. Second channel; 803. Cylinder cover; 9. Blower; 10. Guide pipe; 11. Second filter material; 12. Baffle plate. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0023] This application provides a laser welding device, mainly to address the problem that current laser welding equipment is often placed directly in open-air or open workshop environments. While this arrangement simplifies the installation process and reduces operating costs to some extent, it has significant technical drawbacks. The application provides the following technical solution, which will be discussed in conjunction with... Figures 1-4 Please provide a detailed explanation:

[0024] A laser welding device, comprising:

[0025] Cabinet 1, laser welding components are installed on the inner top wall of cabinet 1, a guide plate 2 is inclinedly arranged on the inner bottom side of cabinet 1, a discharge port 101 is opened on the back of cabinet 1 corresponding to the position of guide plate 2, and a cabinet door 102 is hinged on the front of cabinet 1 above the guide plate 2.

[0026] Welding table 3 is located inside cabinet 1. Support legs 4 are connected between the bottom sides of welding table 3 and the top surface of guide plate 2.

[0027] The installation chamber 5 is connected to the top rear side of the cabinet 1. The front of the installation chamber 5 is connected to the installation cylinder 6 at equal intervals. The interior of the installation cylinder 6 is filled with the first filter material 7. The surface of the installation cylinder 6 is evenly distributed with air holes 601.

[0028] The fixed cylinder 8 is fixedly inserted inside the cabinet 1 near the back panel. The front of the fixed cylinder 8 has a first channel 801, which is directly opposite the top surface of the welding table 3. A blower 9 is installed on the back of the cabinet 1. A guide pipe 10 is connected between the air inlet of the blower 9 and the fixed cylinder 8. The inside of the fixed cylinder 8 is filled with a second filter material 11.

[0029] Workflow Description

[0030] Preparation stage: Open cabinet door 102 on the front of cabinet 1, carefully place the workpiece to be welded on top of welding table 3, close cabinet door 102, and prepare to start welding operation.

[0031] Purification Stage: Turn on the blower 9 installed on the back of the cabinet 1. The blower 9 starts to draw air in, and the negative pressure generated by the blower 9 causes the air inside the cabinet 1 to flow in a directional manner. The air containing impurities is drawn into the fixed cylinder 8. The second filter material 11 (activated carbon rod) filled in the fixed cylinder 8 has a rich microporous structure and a large specific surface area. It can capture impurities such as dust and metal fragments in the air through adsorption, thereby purifying the air inside the cabinet 1. Outside air enters through the air holes 601 on the surface of the mounting cylinder 6. The first filter material 7 (activated carbon rod) in the mounting cylinder 6 also uses the adsorption principle to filter the incoming air. The purified air enters the cabinet 1, completing the air circulation and purification process, and providing a clean air environment for welding.

[0032] Welding Stage: The laser welding assembly is installed on the inner top wall of cabinet 1, and the clamping device for assisting in holding the workpiece is installed on the inner side wall of cabinet 1. Both are existing technologies and are not shown in the figure. The working principle of the laser welding assembly is based on the thermal effect of laser. When the laser welding assembly is started, it emits a high-energy-density laser beam. The laser beam is focused on the surface of the workpiece to be welded, causing the metal on the surface of the workpiece to quickly absorb the laser energy and the temperature to rise sharply above the melting point. The metal begins to melt. Under the continuous action of laser energy, the molten metal forms a molten pool. As the laser beam moves along the preset path, the molten pool also moves. The subsequently molten metal continuously fills the previously formed molten pool. After the molten pool cools and solidifies, the welding process of the workpiece is completed, and the metal materials are joined.

[0033] This device employs a dual-stage air filtration system. An installation chamber 5 and multiple installation cylinders 6 filled with the first filter material 7 are located at the rear top of the cabinet 1 to filter the air entering the cabinet 1 from the outside. Simultaneously, a fixed cylinder 8 filled with the second filter material 11 is located inside the cabinet 1 near the back panel to purify the air containing impurities within the cabinet 1. This dual-stage filtration design significantly reduces dust and impurities entering the welding area, minimizing defects such as porosity 601 and inclusions during welding. It also prevents impurities from interfering with laser energy transmission, resulting in more uniform weld penetration and width. Consequently, it significantly improves the strength and stability of the weld joint, ensuring a high standard of welding quality.

[0034] like Figure 4As shown, in some embodiments, a baffle plate 12 is hinged to the top of the discharge port 101. More specifically, when the laser welding equipment is operating normally, the baffle plate 12 is in a closed state. Relying on its own weight and its tight fit with the edge of the discharge port 101, it effectively prevents dust and debris from the external environment from entering the cabinet 1. When the welding work is completed and it is necessary to clean up the metal shavings and other impurities generated during the welding process, the operator manually lifts the baffle plate 12 upwards, causing it to rotate around the hinge point. Since the guide plate 2 on the bottom side of the cabinet 1 is inclined, under the action of gravity, the metal shavings that were originally accumulated on the guide plate 2 will automatically slide down along the guide plate 2 and be discharged from the cabinet 1 through the open discharge port 101. After cleaning, the baffle plate 12 is lowered to return to the closed position, restoring the seal on the discharge port 101 and ensuring that the welding environment is not contaminated by the outside when the equipment is running again.

[0035] like Figure 4 As shown, in some embodiments, the first filter material 7 and the second filter material 11 are both activated carbon rods. More specifically, during the operation of the laser welding equipment, whether it is the air entering the cabinet 1 from the outside or the air inside the cabinet 1 that originally contained impurities, when the activated carbon rods are filled into the mounting cylinder 6 and the fixing cylinder 8, the activated carbon rods can accurately adsorb particulate impurities such as dust and metal fragments. Due to their rich microporous structure, they can effectively intercept impurities of different particle sizes, ensuring that the air entering the welding area is highly clean and reducing the adverse effects of impurities on the welding quality. During the laser welding process, the metal material may produce a small amount of harmful gases during the high-temperature melting and solidification process, such as irritating gases produced by the decomposition of metal oxides. Activated carbon rods can not only adsorb particulate impurities, but also have the adsorption and catalytic conversion effects on some harmful gases. The active groups on their surface can react chemically with harmful gas molecules, converting them into harmless or low-harm substances, further improving the air quality of the welding environment and protecting the health of the operators.

[0036] like Figure 1As shown, in some embodiments, a connecting pipe 501 is provided on the front of the installation chamber 5, and the installation cylinder 6 is threadedly connected to the connecting pipe 501. More specifically, when the installation cylinder 6 needs to be installed, the operator aligns the threaded end of the installation cylinder 6 with the thread of the connecting pipe 501 and rotates the installation cylinder 6 clockwise. As it rotates, the threads of the installation cylinder 6 and the connecting pipe 501 engage with each other and gradually tighten until the installation cylinder 6 is tightly fixed on the connecting pipe 501. During this process, the helix angle of the thread and the friction force work together to keep the installation cylinder 6 firmly on the installation chamber 5, ensuring that the installation cylinder 6 will not fall off when the equipment is running. When it is necessary to replace the first filter material 7 (activated carbon rod) inside the installation cylinder 6 or to repair the installation cylinder 6, the operator can easily remove the installation cylinder 6 from the connecting pipe 501 by rotating the installation cylinder 6 counterclockwise. After the maintenance operation is completed, the new or cleaned installation cylinder 6 can be reinstalled in the same way.

[0037] like Figure 1 As shown, in some embodiments, the two ends of the fixed cylinder 8 are open and threaded with a cylinder cover 803. More specifically, when installing the second filter material 11 (activated carbon rod) inside the fixed cylinder 8, the operator first rotates the cylinder cover 803 at one end counterclockwise to remove it. At this time, the internal space of the open fixed cylinder 8 is fully exposed. The prepared second filter material 11 is then placed into the fixed cylinder 8 in sequence, ensuring that the filter material is filled evenly and tightly. Then, the removed cylinder cover 803 is aligned with the thread at the port of the fixed cylinder 8 and rotated clockwise to make the cylinder cover 803 tightly screwed into the fixed cylinder 8. The cylinder cover 803 at the other end is installed in the same way, thereby completing the filling of the second filter material 11. When it is necessary to replace or inspect the second filter material 11, the cylinder cover 803 is rotated counterclockwise to open both ends of the fixed cylinder 8, and the filter material can be easily removed for related operations. After completion, the new or cleaned filter material and cylinder cover 803 are reinstalled.

[0038] like Figure 4As shown, in some embodiments, the bottom surface of the fixed cylinder 8 has a second channel 802. More specifically, after the laser welding equipment has been running for a period of time, the second filter material 11 (activated carbon rod) inside the fixed cylinder 8 adsorbs a large amount of impurities and needs to be replaced. The operator first rotates the cylinder caps 803 at both ends of the fixed cylinder 8 counterclockwise to remove them and take out the saturated activated carbon rod. At this time, the inside of the fixed cylinder 8 is exposed. Metal chips, dust and other impurities that were intercepted by the activated carbon rod during the welding process and attached to the cylinder wall and filter material gaps, lose the obstruction of the filter material and begin to fall under the action of gravity. Since the bottom surface of the fixed cylinder 8 has a second channel 802, these impurities will directly pass through the second channel 802 and fall vertically onto the inclined guide plate 2 below. As the impurities continue to fall and accumulate on the guide plate 2, under the continuous action of gravity, the impurities slide along the guide plate 2 towards the discharge port 101 and are finally discharged from the discharge port 101 into the cabinet 1, completing the cleaning of impurities inside the fixed cylinder 8.

[0039] like Figure 4 As shown, in some embodiments, the four sides of the welding station 3 do not contact the inner wall of the cabinet 1. More specifically, during the laser welding process, impurities such as metal chips and slag are generated. Since the four sides of the welding station 3 do not contact the inner wall of the cabinet 1, these impurities are not blocked by the welding station 3 under the action of gravity, but can fall freely from the sides of the welding station 3. The inclined guide plate 2 below catches the impurities falling from the sides of the welding station 3. The impurities slide along the inclined surface of the guide plate 2 towards the discharge port 101 under the action of gravity. When it is necessary to clean the impurities, the baffle plate 12 at the top of the discharge port 101 is opened, and the impurities can be smoothly discharged from the cabinet 1, thereby realizing the automatic cleaning of impurities generated during the welding process without the need for manual cleaning of impurities around the welding station 3.

[0040] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A laser welding device, characterized in that, include: The cabinet (1) has a laser welding assembly installed on the inner top wall of the cabinet (1). The bottom side of the cabinet (1) is inclined with a guide plate (2). The back of the cabinet (1) is provided with a discharge port (101) corresponding to the guide plate (2). The front of the cabinet (1) is hinged above the guide plate (2). A welding table (3) is set inside the cabinet (1), and support legs (4) are connected between the bottom sides of the welding table (3) and the top surface of the guide plate (2). The installation compartment (5) is connected to the rear side of the top of the cabinet (1). The front of the installation compartment (5) is connected to the installation cylinder (6) at equal intervals. The interior of the installation cylinder (6) is filled with the first filter material (7). The surface of the installation cylinder (6) is evenly distributed with air holes (601). A fixed cylinder (8) is fixedly inserted inside the cabinet (1) near the back panel. The front of the fixed cylinder (8) has a first channel (801) which is directly opposite the top surface of the welding table (3). A blower (9) is installed on the back of the cabinet (1). A guide pipe (10) is connected between the air inlet of the blower (9) and the fixed cylinder (8). The interior of the fixed cylinder (8) is filled with a second filter material (11).

2. The laser welding equipment according to claim 1, characterized in that, A baffle plate (12) is hinged to the top of the discharge port (101).

3. The laser welding equipment according to claim 1, characterized in that, Both the first filter material (7) and the second filter material (11) are activated carbon rods.

4. The laser welding equipment according to claim 1, characterized in that, The front of the installation chamber (5) is provided with a connecting pipe (501), and the installation cylinder (6) is threadedly connected to the connecting pipe (501).

5. The laser welding equipment according to claim 1, characterized in that, The fixed cylinder (8) has open ends and is threaded with a cylinder cover (803).

6. The laser welding equipment according to claim 1, characterized in that, The bottom surface of the fixed cylinder (8) has a second channel (802).

7. The laser welding equipment according to claim 1, characterized in that, The four sides of the welding station (3) do not contact the inner wall of the cabinet (1).

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