A multi-angle flexible spot welding device

Abstract

This utility model discloses a multi-angle flexible spot welding device, including a welding robotic arm. One end of the welding robotic arm is connected to a spot welding gun. A shield is fitted on the outer wall of the spot welding gun. The shield has a funnel-shaped structure. An air inlet is provided between the lower end of the shield and the outer wall of the spot welding gun. A mounting bracket is fixedly connected between the inner wall of the shield and the outer wall of the spot welding gun. The mounting bracket has a through hole. A mounting sleeve is installed inside the through hole. Both ends of the mounting sleeve are open. An intercepting net is fixedly connected to the inner wall of the mounting sleeve. The intercepting net is symmetrically distributed vertically about the bisector of the exhaust fan. An exhaust fan, a first filter layer, and a second filter layer are provided inside the mounting sleeve. The first filter layer is located at the bottom of the exhaust fan. A guide groove is integrally connected to the outer wall of the shield. This device protects the end of the welding robotic arm near the spot welding gun, ensuring the service life of the welding robotic arm and the flexibility of the welding robotic arm's adjustable angle.

Description

Technical Field

[0001] This utility model relates to the field of spot welding technology, specifically a multi-angle flexible spot welding device. Background Technology

[0002] Spot welding is a common resistance welding process, mainly used to connect two or more metal workpieces together at the contact point. Its basic principle is to use the resistance heat generated by the current passing through the contact surface and adjacent area of ​​the workpiece to heat the metal to a molten or plastic state, while applying pressure to form a strong welded joint.

[0003] Currently, spot welding is usually achieved through a spot welding gun robotic arm to perform flexible and automated spot welding. The spot welding gun is located at the end of the robotic arm. During the spot welding process, light and spatter are generated. The direct splashing of light and spatter can easily impact the end of the robotic arm, thereby affecting the service life of the robotic arm and the flexibility of the joints. Therefore, improvements are needed. Utility Model Content

[0004] The purpose of this invention is to provide a multi-angle flexible spot welding device to solve the problem mentioned in the background art that light and spatter during the spot welding process can easily cause damage to the surface of the robotic arm.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-angle flexible spot welding device, including a welding robotic arm, one end of which is connected to a spot welding gun. A shield is fitted on the outer wall of the spot welding gun, the shield having a funnel-shaped structure. An air inlet is provided between the lower end of the shield and the outer wall of the spot welding gun. A mounting bracket is fixedly connected between the inner wall of the shield and the outer wall of the spot welding gun. A through hole is provided on the mounting bracket, and a mounting sleeve is installed inside the through hole. An exhaust fan, a first filter layer, and a second filter layer are provided inside the mounting sleeve. A guide groove is integrally connected to the outer wall of the shield.

[0006] Preferably, both ends of the mounting sleeve are open, and an intercepting net is fixedly connected to the inner wall of the mounting sleeve. The intercepting net is symmetrically distributed about the bisector of the exhaust fan.

[0007] Preferably, the first filter layer is located at the bottom of the exhaust fan, and a second filter layer is provided at the bottom of the first filter layer.

[0008] Preferably, the outer wall of the guide groove is fixedly connected to a fixing frame and a connector, and the connector has a corrugated structure.

[0009] Preferably, the inner side of the fixing frame is connected to an adjustment cover via a rotating shaft, and the adjustment cover has an arc-shaped structure.

[0010] Preferably, the guide groove has a circular structure when viewed from below, and the inner side of the guide groove has a curved structure.

[0011] Preferably, the inner wall of the through hole of the mounting bracket has a threaded structure, and the mounting sleeve is threadedly connected to the mounting bracket.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] (1) This device protects the welding robot arm near the welding torch end, ensuring the service life of the welding robot arm and the flexibility of the welding robot arm's adjustment angle.

[0014] (2) This device provides a shielding cover on the outer wall of the spot welding gun. The shielding cover can protect the welding robot arm near the spot welding gun, preventing the welding robot arm from being damaged by spot welding light and spatter, thereby ensuring the service life and flexibility of the welding robot arm.

[0015] (3) This device sets an air inlet at the bottom of the shield and sets an installation sleeve inside the shield. The installation sleeve is equipped with an exhaust fan, a first filter layer and a second filter layer. This allows the spot welding fumes to be filtered and discharged in a timely manner, thereby reducing the harm of spot welding fumes to the workers. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a multi-angle flexible spot welding device according to the present invention;

[0017] Figure 2 This is a cross-sectional view of a multi-angle flexible spot welding device according to the present invention;

[0018] Figure 3 This utility model relates to a multi-angle flexible spot welding device. Figure 2 Enlarged view of point A in the middle;

[0019] Figure 4 This is a bottom view of the connection between the shield and the guide groove of a multi-angle flexible spot welding device according to this utility model.

[0020] In the diagram: 1. Welding robotic arm; 2. Shielding cover; 3. Spot welding gun; 4. Air inlet; 5. Adjustment cover; 6. Guide groove; 7. Connector; 8. Fixing frame; 9. Interception net; 10. Exhaust fan; 11. Mounting sleeve; 12. First filter layer; 13. Second filter layer; 14. Mounting frame. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 This utility model provides a technical solution: a multi-angle flexible spot welding device, including a welding robotic arm 1, which is controlled by a PLC. The welding robotic arm 1 is composed of a base, an articulated arm, and a motor drive device. The welding robotic arm 1 is existing technology, so it will not be described in detail here. One end of the welding robotic arm 1 is connected to a spot welding gun 3. A shield 2 is fitted on the outer wall of the spot welding gun 3. The shield 2 has a funnel-shaped structure. An air inlet 4 is provided between the lower end of the shield 2 and the outer wall of the spot welding gun 3. A mounting bracket 14 is fixedly connected between the inner wall of the shield 2 and the outer wall of the spot welding gun 3. The inner wall of the through hole of the mounting bracket 14 has a threaded structure. A mounting sleeve is provided. The mounting sleeve 11 is threadedly connected to the mounting bracket 14. This structure facilitates the disassembly, assembly, and maintenance of the mounting sleeve 11, and also makes it easy to replace the mounting sleeve 11. The mounting bracket 14 has a through hole, and the mounting sleeve 11 is installed inside the through hole. Both ends of the mounting sleeve 11 are open. An intercepting mesh 9 is fixedly connected to the inner wall of the mounting sleeve 11. The intercepting mesh 9 is symmetrically distributed vertically about the bisector of the exhaust fan 10. This structure can intercept particulate dust through the intercepting mesh 9, preventing particulate dust from adhering to the exhaust fan 10. The mounting sleeve 11 contains the exhaust fan 10, a first filter layer 12, and a second filter layer 13. The first filter layer 12 is located on the exhaust fan 10. At the bottom, a second filter layer 13 is provided at the bottom of the first filter layer 12. This structure guides the gas from the bottom of the spot welding gun 3 through the exhaust fan 10, facilitating the entry of the fumes into the shield 2 for filtration before being discharged. The first filter layer 12 is made of HEPA filter mesh, and the second filter layer 13 is made of activated carbon filter material. The first filter layer 12 and the second filter layer 13 can filter impurities and harmful substances in the fumes, reducing harm to the workers' bodies. A guide groove 6 is integrally connected to the outer wall of the shield 2. A fixing bracket 8 and a connector 7 are fixedly connected to the outer wall of the guide groove 6. The connector 7 has a corrugated structure. This structure of the connector 7 can... The corrugated structure supported by high-temperature resistant rubber has a certain deformation characteristic, which facilitates the adjustment of the light angle with the adjustment cover 5. The adjustment cover 5 is connected to the inner side of the fixing frame 8 through a rotating shaft. The adjustment cover 5 has an arc-shaped structure. This structure of the adjustment cover 5 can be fixed to the fixing frame 8 with screws. The angle of the adjustment cover 5 can be adjusted, which is convenient for adjusting the angle of the adjustment cover 5 according to the protection requirements. The guide groove 6 has a circular structure when viewed from below. The inner side of the guide groove 6 has a curved structure. This structure of the guide groove 6 can intercept the spot welding light and spatter when they splash into the inside of the guide groove 6, preventing the spatter from impacting and reflecting elsewhere.

[0023] Working principle: When using this multi-angle flexible spot welding device, the angle of the adjustment cover 5 can be adjusted according to the protection requirements. During adjustment, loosen the screws that fix the adjustment cover 5 and rotate the adjustment cover 5 to the appropriate position. Then, fix the adjustment cover 5 with screws. During the welding process of the welding robot arm 1 driving the spot welding gun 3, the adjustment cover 5 and the shielding cover 2 can block the spot welding light and spatter. After the shielding cover 2 comes into contact with the spatter, some of the spatter is reflected into the guide groove 6 and intercepted by the guide groove 6. This can protect the welding robot arm 1 and improve the service life of the welding robot arm 1.

[0024] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-angle flexible spot welding device, comprising a welding mechanical arm (1), one end of the welding mechanical arm (1) is connected with a spot welding gun (3), characterized in that: The outer wall of the spot welding gun (3) is fitted with a shield (2), which has a funnel-shaped structure. An air inlet (4) is provided between the lower end of the shield (2) and the outer wall of the spot welding gun (3). A mounting bracket (14) is fixedly connected between the inner wall of the shield (2) and the outer wall of the spot welding gun (3). A through hole is provided on the mounting bracket (14), and a mounting sleeve (11) is installed inside the through hole. An exhaust fan (10), a first filter layer (12), and a second filter layer (13) are provided inside the mounting sleeve (11). A guide groove (6) is integrally connected to the outer wall of the shield (2).

2. A multi-angle flexible spot welding device according to claim 1, characterized in that: Both ends of the mounting sleeve (11) are open. An intercepting net (9) is fixedly connected to the inner wall of the mounting sleeve (11). The intercepting net (9) is symmetrically distributed about the bisector of the exhaust fan (10).

3. The multi-angle flexible spot welding device of claim 1, wherein: The first filter layer (12) is located at the bottom of the exhaust fan (10), and a second filter layer (13) is provided at the bottom of the first filter layer (12).

4. The multi-angle flexible spot welding device of claim 1, wherein: The outer wall of the guide groove (6) is fixedly connected to a fixing frame (8) and a connector (7), and the connector (7) has a corrugated structure.

5. The multi-angle flexible spot welding device according to claim 4, characterized in that: The inner side of the fixed frame (8) is connected to an adjustment cover (5) via a rotating shaft. The adjustment cover (5) has an arc-shaped structure.

6. The multi-angle flexible spot welding device of claim 1, wherein: The guide groove (6) has a circular structure when viewed from below, and the inner side of the guide groove (6) has a curved structure.

7. The multi-angle flexible spot welding device of claim 1, wherein: The inner wall of the through hole of the mounting bracket (14) is threaded, and the mounting sleeve (11) is threaded to the mounting bracket (14).

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