Automatic square head welding device

Abstract

The utility model discloses square head automatic welding device, including base and lifting mechanism, the symmetrical square tube of being provided with on base, the symmetrical directional clamping mechanism of being provided with on base, directional clamping mechanism includes the driving disc rotationally arranged on base, the fixed disc rotationally arranged on driving disc, the symmetrical clamping plate of being provided with on driving disc can equidistantly remove, and the welding head of being installed on lifting mechanism, and lifting mechanism is used for the transverse and vertical movement of welding head, can be accurate clamping to the transverse and vertical surface of square tube in directional clamping mechanism, ensure the stability of square tube in the welding process, avoid welding deformation, and the clamping plate symmetrical setting can adapt to different size square tube, improve the versatility and flexibility of device, and the design of rotatable driving disc and fixed disc of symmetrical setting makes square tube in the welding process can adjust welding face flexibly, realizes all -round welding, especially carries out effective welding to four right angle parts of square tube, solved the problem that right angle part is difficult to operate in traditional welding.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, and in particular to an automatic square head welding device. Background Technology

[0002] Welding is a permanent joining process that uses heat, pressure, or a combination of both to achieve atomic bonding between metals or other materials. It is widely used in industrial manufacturing, construction, and maintenance. Its core lies in creating a molten zone through energy input, which, upon cooling, forms a strong joint. Common methods include arc welding, gas shielded welding, and laser welding. Square-head welding specifically refers to a welding method where the joint ends are square-shaped, often used in steel structure frames and pipe connections. Its advantage lies in the larger weld cross-sectional area, which significantly improves structural strength and stability.

[0003] In reality, square tube fittings require welding around all four right angles. Due to the right-angled structure of the square tube fitting, all four sides need to be welded, requiring welders to constantly adjust their posture and angles, increasing the difficulty of the operation. Furthermore, full-circumference welding requires welders to alternate welding on multiple sides, which not only increases welding time but also reduces overall welding efficiency due to frequent changes in welding positions. Simultaneously, right-angled areas are prone to forming welding blind spots, making it difficult for the weld to fully penetrate and form a uniform shape, easily leading to defects such as incomplete fusion, porosity, and slag inclusions, directly affecting weld quality. Therefore, to solve these problems, an automatic square-head welding device is proposed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies, such as limited weld quality and efficiency, and inconvenient operation, by proposing an automatic square-head welding device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An automatic square-head welding device includes a base and a lifting mechanism. A square tube is symmetrically arranged on the base. A directional clamping mechanism is symmetrically and rotatably arranged on the base. The directional clamping mechanism includes a drive disc rotatably arranged on the base, a fixed disc rotatably arranged on the drive disc, and symmetrically arranged clamping plates that move at equal intervals. The clamping plates of the two directional clamping mechanisms are used to separately clamp the horizontal and vertical sides of the square tube. The rotation of the directional clamping mechanism drives the square tube to rotate synchronously, adjusting the welding surface of the square tube during the welding process.

[0007] The lifting mechanism is equipped with a welding head, which is used for the lateral and vertical movement of the welding head.

[0008] The above technical solution further includes:

[0009] The lifting mechanism includes a lifting rail fixedly installed on the base, a lifting screw rotatably connected inside the lifting rail, a mounting platform slidably disposed inside the lifting screw, a lifting motor installed on the top of the lifting rail, and the output end of the lifting motor being fixedly connected to the lifting screw.

[0010] The lifting screw is threadedly connected to a mounting platform, and a cylinder is mounted on the mounting platform. The telescopic end of the cylinder is fixedly connected to the welding head.

[0011] The directional clamping mechanism also includes a drive shaft symmetrically rotatably connected to the base, and guide wheels symmetrically fixedly connected to both drive shafts, with both guide wheels in contact with the drive disk.

[0012] A directional motor is installed on the upper part of the drive shaft, and the output end of the directional motor is fixedly connected to the drive shaft. A drive gear is symmetrically installed on one of the drive shafts near the lifting rail. A directional gear is installed on the side of the fixed disk away from the drive disk. The drive gear and the directional gear mesh with each other.

[0013] The base is symmetrically fixed with fixing rings, the fixing plate is fixedly set on the inner side of the fixing rings, the driving plate is symmetrically provided with driving grooves, and the fixing plate is symmetrically provided with sliding grooves and guide grooves. The sliding grooves, guide grooves and driving grooves slide relative to the clamping plate.

[0014] The fixed disk and the drive disk are jointly provided with a limiting component. The limiting component includes a limiting groove jointly opened by the fixed disk and the drive disk. The drive disk is installed with a limiting plate in the limiting groove. The fixed disk is provided with a ratchet plate that engages with the limiting plate in the limiting groove. The ratchet plate is telescopic. The limiting mechanism is used to fix the fixed disk and the drive disk into one unit.

[0015] Multiple spring telescopic rods are installed between the ratchet plate and the drive disc.

[0016] This utility model has the following beneficial effects:

[0017] In this invention, the design of the drive plate and fixed plate in the directional clamping mechanism, combined with the clamping plates that can move at equal distances, enables precise clamping of the horizontal and vertical surfaces of the square tube, ensuring the stability of the square tube during welding and avoiding welding deformation. The symmetrical arrangement of the clamping plates can adapt to square tubes of different sizes, improving the versatility and flexibility of the device.

[0018] In this invention, the symmetrically arranged rotatable drive disc and fixed disc design allows for flexible adjustment of the welding surface during the welding process of the square tube, enabling full-circumference welding. In particular, it effectively welds the four right-angled parts of the square tube, solving the problem of difficult operation at right-angled parts in traditional welding. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the square-head automatic welding device proposed in this utility model;

[0020] Figure 2 This is a schematic diagram of the lifting mechanism in this utility model;

[0021] Figure 3 This is a schematic diagram of the orientation clamping mechanism in this utility model;

[0022] Figure 4 This is a schematic diagram of the first cross-sectional structure of the fixed disk and the drive disk in this utility model;

[0023] Figure 5 This is a schematic diagram of the second cross-sectional structure of the fixed disk and the drive disk in this utility model;

[0024] Figure 6 This is a schematic diagram of the limiting component structure in this utility model.

[0025] In the diagram: 1. Base; 2. Lifting rail; 3. Square tube; 21. Lifting motor; 22. Lifting screw; 23. Mounting platform; 24. Cylinder; 25. Welding head; 10. Fixing ring; 11. Directional motor; 12. Drive shaft; 13. Directional gear; 14. Guide wheel; 15. Drive gear; 16. Fixing disc; 17. Drive disc; 18. Slide groove; 19. Guide groove; 110. Drive groove; 111. Clamping plate; 112. Limiting plate; 113. Racket plate; 114. Spring telescopic rod; 115. Limiting groove. Detailed Implementation

[0026] 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.

[0027] Example

[0028] like Figures 1-6As shown, the automatic square-head welding device proposed in this utility model includes a base 1 and a lifting mechanism. A square tube 3 is symmetrically arranged on the base 1. A directional clamping mechanism is symmetrically and rotatably arranged on the base 1. The directional clamping mechanism includes a drive disk 17 rotatably arranged on the base 1 and a fixed disk 16 rotatably arranged on the drive disk 17. A clamping plate 111 that moves at equal distances is symmetrically arranged on the drive disk 17. The clamping plates 111 of the two directional clamping mechanisms are used to clamp the horizontal and vertical sides of the square tube 3 separately. The rotation of the directional clamping mechanism drives the square tube 3 to rotate synchronously. During the welding process, the welding surface of the square tube 3 is adjusted. A welding head 25 is installed on the lifting mechanism. The lifting mechanism is used for the horizontal and vertical movement of the welding head 25.

[0029] The directional clamping mechanism is used for the circular motion of the square tube 3 during the welding process, which solves the problem that the welder needs to constantly adjust the position during the welding of the four sides of the square tube. The lifting mechanism is used to ensure that the welding head 25 is always in full contact with the surface of the square tube 3 during the welding process, thereby improving the welding quality.

[0030] The lifting mechanism includes a lifting rail 2 fixedly installed on the base 1, a lifting screw 22 rotatably connected inside the lifting rail 2, a mounting platform 23 slidably disposed inside the lifting screw 22, and a lifting motor 21 installed on the top of the lifting rail 2. The output end of the lifting motor 21 is fixedly connected to the lifting screw 22.

[0031] The lifting screw 22 is threadedly connected to a mounting platform 23, and a cylinder 24 is mounted on the mounting platform 23. The telescopic end of the cylinder 24 is fixedly connected to the welding head 25.

[0032] Furthermore, this design employs a PLC-controlled lifting motor 21 and cylinder 24. Cylinder 24 is mounted on the mounting platform 23. This lifting mechanism, driven by the lifting motor 21, rotates the lifting screw 22 to adjust the height of the mounting platform 23. Once the mounting platform 23 is lifted to the appropriate height, the cylinder 24, connected to an external air supply device (cylinders are existing technology, and their principle will not be elaborated upon), is activated. The cylinder 24 converts the pressure energy of compressed air into mechanical energy, causing its extension and retraction ends to extend and retract. The extension and retraction ends of the cylinder 24 are fixedly connected to the welding head 25 (labeled 25). When the extension and retraction ends of the cylinder 24 extend, they push the welding head 25 forward, bringing it closer to the workpiece for welding. After welding is completed, the extension and retraction ends of the cylinder 24 retract, causing the welding head 25 to retract. Moving away from the workpiece, one welding cycle is completed. During the rotation of the square tube 3, the height and angle of its four sides will change continuously. Therefore, the PLC is used to control the lifting motor 21 and the cylinder 24 to drive the welding head 25 to move, so that the welding head 25 is always in full contact with the square tube 3.

[0033] The directional clamping mechanism also includes a drive shaft 12 symmetrically rotatably connected to the base 1, and guide wheels 14 symmetrically fixedly connected to the two drive shafts 12. The two guide wheels 14 are in contact with the drive disk 17.

[0034] A directional motor 11 is installed on the 1. The output end of the directional motor 11 is fixedly connected to the drive shaft 12. A drive gear 15 is symmetrically installed on a drive shaft 12 near the lifting rail 2. A directional gear 13 is installed on the side of the fixed disk 16 away from the drive disk 17. The drive gear 15 and the directional gear 13 mesh with each other.

[0035] A fixing ring 10 is symmetrically fixedly connected to the base 1. The inner side of the fixing ring 10 is fixedly set on the fixing plate 16. The driving plate 17 is symmetrically provided with driving grooves 110. The fixing plate 16 is symmetrically provided with sliding grooves 18 and guide grooves 19. The sliding grooves 18, guide grooves 19 and driving grooves 110 slide relative to the clamping plate 111.

[0036] Furthermore, the worker first places the two square tubes to be welded into the drive plate 17 and adjusts them using the handle on the drive plate 17. Due to the setting of the sliding groove 18, guide groove 19 and drive groove 110, the clamping plate 111 can slide relative to each other in these grooves. When the drive plate 17 is rotated, the drive groove 110 rotates synchronously with the drive plate 17. Utilizing the limiting effect of the sliding groove 18 and guide groove 19, the drive groove 110 drives the clamping plate 111 to clamp the square tube 3. The symmetrically arranged clamping plates 111 can clamp the square tube 3 on the horizontal and vertical planes respectively, and can clamp rectangular tubes of different shapes.

[0037] Furthermore, after the square tube 3 is clamped using the clamping plate 111, the directional motor 11 is started. The directional motor 11 serves as the power source for the entire directional clamping mechanism, and its output end is fixedly connected to the transmission shaft 12. When the directional motor 11 rotates, it will drive the transmission shaft 12 to rotate synchronously.

[0038] Since guide wheels 14 are symmetrically fixedly connected to both drive shafts 12, the guide wheels 14 will rotate when the drive shafts 12 rotate. The two guide wheels 14 are in contact with the drive disk 17, and the rotation of the guide wheels 14 will provide auxiliary support for the drive disk 17.

[0039] When the drive shaft 12 rotates, it drives the drive gear 15 to rotate. Due to the meshing of the gears, the drive gear 15 drives the directional gear 13 to rotate. The rotation of the directional gear 13 drives the fixed disk 16 and the drive disk 17 to rotate synchronously. Since the square tube 3 is clamped between the fixed disk 16 and the drive disk 17, the square tube 3 can rotate. The welding head 25 fully contacts the square tube 3 to achieve welding without dead angles.

[0040] A limiting component is provided on both the fixed disk 16 and the drive disk 17. The limiting component includes a limiting groove 115 that is opened on both the fixed disk 16 and the drive disk 17. A limiting plate 112 is installed in the limiting groove 115 of the drive disk 17. A ratchet plate 113 that engages with the limiting plate 112 is provided in the limiting groove 115 of the fixed disk 16. The ratchet plate 113 is telescopic and movable. The limiting mechanism is used to fix the fixed disk 16 and the drive disk 17 into one unit.

[0041] Multiple spring telescopic rods 114 are installed between the ratchet plate 113 and the drive disc 17.

[0042] When clamping the square tube, the drive disk 17 needs to be rotated. During the rotation of the drive disk 17, the fixed disk 16 needs to be temporarily fixed using a locking device. At this time, the drive disk 17 drives the limiting plate 112 to slide in the limiting groove 115. The limiting plate 112 contacts the ratchet plate 113, causing the ratchet plate 113 to overcome the elastic force of the spring telescopic rod 114 and move away from the limiting plate 112 until the clamping plate 111 contacts the square tube 3. The ratchet plate 113 and the limiting plate 112 then engage with each other. Due to the special structural design of the ratchet plate 113 and the limiting plate 112, a reliable connection is formed between the rotating disk 17 and the fixed disk 16 after they engage, restricting the rotation of the rotating disk 17 relative to the fixed disk 16, thereby fixing the fixed disk 16 and the rotating disk 17 into one unit. During the engagement of the ratchet plate 113 and the limiting plate 112, the spring telescopic rod 114... When compressed, and when the limit needs to be released, press the handle on the ratchet plate 113. Under the pressing action, the spring telescopic rod 114 pushes the ratchet plate 113 away from the limit plate 112, so that the ratchet plate 113 and the limit plate 112 are disengaged, and the rotating disk 17 can resume free rotation relative to the fixed disk 16.

[0043] In this embodiment, the operator first places two square tubes in the drive plate 17. By rotating the drive plate 17, the clamping plate 111 is driven by the sliding groove 18, guide groove 19 and drive groove 110 to clamp the square tubes 3. It can clamp rectangular tubes of different shapes. During the clamping process, the fixed plate 16 and the drive plate 17 are fixed, the limiting plate 112 is engaged with the ratchet plate 113, and the spring telescopic rod 114 is compressed. When the limiting is released, the ratchet plate 113 is pressed, and the spring telescopic rod 114 is pushed away from the limiting plate 112. After clamping is completed, the directional motor 11 is started, which drives the transmission shaft 12 to rotate. The guide wheel 14 on the transmission shaft 12 assists in supporting the drive disk 17. At the same time, the drive gear 15 on the transmission shaft 12 drives the directional gear 13 to rotate, which in turn drives the fixed disk 16 and the drive disk 17 to rotate synchronously, causing the square tube 3 to rotate. The PLC controls the lifting motor 21 and the cylinder 24 to make the welding head 25 move with the square tube 3 as it rotates, always making full contact with the square tube 3 to achieve welding without dead angles.

[0044] 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 automatic square-head welding device, comprising a base (1) and a lifting mechanism, characterized in that, A square tube (3) is symmetrically arranged on the base (1). A directional clamping mechanism is symmetrically and rotatably arranged on the base (1). The directional clamping mechanism includes a drive disk (17) rotatably arranged on the base (1) and a fixed disk (16) rotatably arranged on the drive disk (17). A clamping plate (111) that moves at equal distances is symmetrically arranged on the drive disk (17). The clamping plates (111) of the two directional clamping mechanisms are used to clamp the two horizontal and two vertical sides of the square tube (3) separately. The rotation of the directional clamping mechanism drives the square tube (3) to rotate synchronously, and the welding surface of the square tube (3) is adjusted during the welding process. The lifting mechanism is equipped with a welding head (25), which is used for the lateral and vertical movement of the welding head (25).

2. The automatic square-head welding device according to claim 1, characterized in that, The lifting mechanism includes a lifting rail (2) fixedly installed on the base (1), a lifting screw (22) rotatably connected inside the lifting rail (2), a mounting platform (23) slidably disposed inside the lifting screw (22), a lifting motor (21) installed on the top of the lifting rail (2), and the output end of the lifting motor (21) fixedly connected to the lifting screw (22).

3. The automatic square-head welding device according to claim 1, characterized in that, The lifting screw (22) is threadedly connected to a mounting platform (23), and a cylinder (24) is mounted on the mounting platform (23). The telescopic end of the cylinder (24) is fixedly connected to the welding head (25).

4. The automatic square-head welding device according to claim 1, characterized in that, The directional clamping mechanism also includes a drive shaft (12) symmetrically rotatably connected to the base (1), and guide wheels (14) symmetrically fixedly connected to both drive shafts (12), and the two guide wheels (14) are in contact with each other with the drive disk (17).

5. The automatic square-head welding device according to claim 4, characterized in that, A directional motor (11) is installed on the 1. The output end of the directional motor (11) is fixedly connected to the transmission shaft (12). A drive gear (15) is symmetrically installed on one of the transmission shafts (12) near the lifting rail (2). A directional gear (13) is installed on the side of the fixed disk (16) away from the drive disk (17). The drive gear (15) and the directional gear (13) mesh with each other.

6. The automatic square-head welding device according to claim 1, characterized in that, A fixing ring (10) is symmetrically fixedly connected to the base (1). The fixing plate (16) is fixedly set on the inner side of the fixing ring (10). A driving groove (110) is symmetrically opened on the driving plate (17). A sliding groove (18) and a guide groove (19) are symmetrically opened on the fixing plate (16). The sliding groove (18), the guide groove (19) and the driving groove (110) slide relative to each other with the clamping plate (111).

7. The automatic square-head welding device according to claim 1, characterized in that, The fixed disk (16) and the drive disk (17) are jointly provided with a limiting component. The limiting component includes a limiting groove (115) jointly opened by the fixed disk (16) and the drive disk (17). The drive disk (17) is installed with a limiting plate (112) in the limiting groove (115). The fixed disk (16) is provided with a ratchet plate (113) that engages with the limiting plate (112) in the limiting groove (115). The ratchet plate (113) is telescopic. The limiting mechanism is used to fix the fixed disk (16) and the drive disk (17) into one unit.

8. The automatic square-head welding device according to claim 7, characterized in that, Multiple spring telescopic rods (114) are installed between the ratchet plate (113) and the drive disc (17).

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