Welding equipment

Abstract

The welding equipment comprises a main body unit and a supporting unit, the main body unit comprises a base, a welding machine, a protective gas cylinder and a welding gun, the welding gun comprises a gun tail, a tungsten rod clamp and a contact tube, electric arc is generated between a tungsten rod and a welding workpiece for welding, and protective gas of the protective gas cylinder is introduced into the contact tube. And a protection area is formed on the surface of the welding workpiece, so that the welding quality is ensured. Meanwhile, a first sliding block of the supporting unit can drive a chuck and a welding gun to adjust the positions in the horizontal direction, a second sliding block of the supporting unit can drive the chuck and the welding gun to adjust the positions in the vertical direction, the chuck drives the welding gun to rotate, and therefore the welding gun can weld circumferential welds. The spraying hole is formed in the contact tube, gas protection in the welding process is achieved, meanwhile, the size of a welding gun is reduced, the welding gun can stretch into a small pipe diameter to conduct inner hole welding, and the flexible adaptability of welding equipment is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of welding equipment and its peripheral supporting facilities, and in particular to a welding equipment. Background Technology

[0002] Welding is a widely used technology that can join materials of different shapes and thicknesses together, producing welds with good mechanical properties. Welding equipment is the necessary equipment for performing welding processes. Equipment in heat exchangers, such as nickel-based alloy tube sheets and nickel-based alloy heat exchange tubes, requires internal hole welding equipment.

[0003] In existing internal welding equipment, the welding torch head is usually fixed and the pipe is rotated by a roller device to achieve a 360° circumferential weld. This method is limited for many applications, such as welding heat exchange tubes, and has poor flexibility. It cannot achieve internal welding of pipes with a diameter of less than 30mm, and its adaptability is poor. Utility Model Content

[0004] The purpose of this invention is to provide a welding device to solve the problems existing in the above-mentioned related technologies, so that the welding device can weld circumferential welds and realize the welding of inner holes with small pipe diameters, thereby improving the flexibility and adaptability of the welding device.

[0005] To achieve the above objectives, this utility model provides the following solution:

[0006] This utility model provides a welding device, comprising:

[0007] The main unit includes a base, a welding machine, a protective gas cylinder, and a welding torch. The welding machine and the protective gas cylinder are both mounted on the base and connected to the welding torch. The welding torch includes a torch tail, a tungsten rod clamp, and a conductive nozzle. The tungsten rod clamp is connected to the torch tail and can fix the tungsten rod. The conductive nozzle is connected to the welding machine and is sleeved on the outside of the tungsten rod. The conductive nozzle is also connected to the protective gas cylinder. A spray hole is opened at the bottom of the conductive nozzle, through which the tungsten rod can extend. The protective gas supplied by the protective gas cylinder to the conductive nozzle can be sprayed out through the spray hole.

[0008] The support unit includes a first slider, a second slider, and a chuck. The first slider is slidably disposed on the base, and the sliding direction of the first slider is parallel to the horizontal direction. The second slider is slidably connected to the first slider, and the sliding direction of the second slider is parallel to the vertical direction. The chuck is rotatably connected to the second slider, and the rotation axis of the chuck is parallel to the horizontal direction. The chuck can fix the welding torch and drive the welding torch to rotate.

[0009] Preferably, the bottom of the conductive nozzle has a through hole, through which the tungsten rod can extend, the inner wall of the through hole abuts against the tungsten rod, and the spray hole is connected to the through hole.

[0010] Preferably, there are multiple spray holes, which are evenly distributed circumferentially around the axis of the through hole.

[0011] Preferably, the support unit further includes a first lead screw and a second lead screw, the first lead screw being rotatably mounted on the base, and the first slider being threadedly connected to the first lead screw; the second lead screw being rotatably mounted on the first slider, and the second slider being threadedly connected to the second lead screw; the first lead screw is connected to a first rocker arm, and the second lead screw is connected to a second rocker arm.

[0012] Preferably, the base is provided with a first guide rail, and the first slider is slidably connected to the first guide rail; the first slider is provided with a second guide rail, and the second slider is slidably connected to the second guide rail.

[0013] Preferably, the support unit further includes a servo motor, a first transmission gear, and a second transmission gear. The servo motor is disposed on the second slider, and both the first transmission gear and the second transmission gear are rotatably disposed on the second slider. The output end of the servo motor is connected to the first transmission gear, and the first transmission gear meshes with the second transmission gear. The chuck meshes with the second transmission gear.

[0014] Preferably, the main body unit further includes a connecting rod, one end of which is detachably connected to the chuck, and the other end of which is connected to the welding torch.

[0015] Preferably, the chuck has a slot and a block, one end of the connecting rod can extend into the slot, and the block can connect to the chuck and clamp the connecting rod to fix the relative position of the connecting rod and the chuck.

[0016] The connection position between the card block and the chuck can be adjusted.

[0017] Preferably, the welding torch is connected to the welding machine via a cable, the welding torch is connected to the protective gas cylinder via a gas pipe, the connecting rod is a hollow rod, and the cable and the gas pipe pass through the connecting rod.

[0018] Preferably, the conductive nozzle is threadedly connected to the gun tail.

[0019] The base is equipped with casters at the bottom.

[0020] This utility model achieves the following technical effects compared to related technologies: The welding equipment of this utility model includes a main unit and a support unit. The main unit includes a base, a welding machine, a protective gas cylinder, and a welding torch. The welding machine and the protective gas cylinder are both mounted on the base and connected to the welding torch. The welding torch includes a torch tail, a tungsten rod clamp, and a conductive nozzle. The tungsten rod clamp is connected to the torch tail and can fix the tungsten rod. The conductive nozzle is connected to the welding machine and sleeved on the outside of the tungsten rod. The conductive nozzle is also connected to the protective gas cylinder. A spray hole is opened at the bottom of the conductive nozzle, allowing the tungsten rod to extend out of the conductive nozzle. The protective gas supplied by the protective gas cylinder to the conductive nozzle can be sprayed out from the spray hole. The support unit includes a first slider, a second slider, and a chuck. The first slider is slidably mounted on the base, and the sliding direction of the first slider is parallel to the horizontal direction. The second slider is slidably connected to the first slider, and the sliding direction of the second slider is parallel to the vertical direction. The chuck is rotatably connected to the second slider, and the rotation axis of the chuck is parallel to the horizontal direction. The chuck can fix the welding torch and drive the welding torch to rotate.

[0021] The welding equipment of this invention features a base that provides stable support for all components. During welding, the welding machine transmits current to a tungsten rod through a conductive nozzle. An electric arc is generated between the tungsten rod and the workpiece for welding. Simultaneously, protective gas from a protective gas cylinder is introduced into the conductive nozzle and ejected from the nozzle to form a protective area on the surface of the workpiece, ensuring welding quality. Furthermore, the first slider of the support unit can adjust the position of the chuck and welding torch horizontally, while the second slider can adjust their position vertically. The chuck rotates the welding torch, enabling it to weld circumferential welds. This invention eliminates the ceramic nozzle of the existing argon arc welding torch head, instead using a nozzle on the conductive nozzle for gas protection during welding. It also reduces the size of the welding torch, allowing it to be inserted into smaller pipe diameters for internal welding, thus improving the flexibility and adaptability of the welding equipment. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the welding equipment disclosed in the embodiments of this utility model;

[0024] Figure 2 This is a partial structural schematic diagram of the welding equipment disclosed in the embodiments of this utility model;

[0025] Figure 3This is a schematic diagram of the disassembly structure of the welding torch of the welding equipment disclosed in the embodiments of this utility model;

[0026] Figure 4 This is a schematic diagram of the conductive tip of the welding torch of the welding equipment disclosed in the embodiments of this utility model.

[0027] In the diagram: 1. Base; 2. Welding machine; 3. Protective gas cylinder; 4. Gun tail; 5. Tungsten rod holder; 6. Tungsten rod; 7. Conductive nozzle; 8. Spray nozzle; 9. Through hole; 10. First slider; 11. Second slider; 12. Chuck; 13. First lead screw; 14. Second lead screw; 15. First crank handle; 16. Second crank handle; 17. First guide rail; 18. Servo motor; 19. First transmission gear; 20. Second transmission gear; 21. Connecting rod; 22. Slot; 23. Locking block; 24. Welding gun; 25. Caster wheel. Detailed Implementation

[0028] 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.

[0029] The purpose of this invention is to provide a welding device to solve the problems existing in the above-mentioned related technologies, so that the welding device can weld circumferential welds and realize the welding of inner holes with small pipe diameters, thereby improving the flexibility and adaptability of the welding device.

[0030] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Example 1

[0032] This embodiment provides a welding device; please refer to [reference needed]. Figures 1-4The system includes a main unit and a support unit. The main unit includes a base 1, a welding machine 2, a shielding gas cylinder 3, and a welding torch 24. The welding machine 2 and the shielding gas cylinder 3 are both mounted on the base 1 and connected to the welding torch 24. The welding torch 24 includes a torch tail 4, a tungsten rod clamp 5, and a conductive nozzle 7. The tungsten rod clamp 5 is connected to the torch tail 4 and can fix a tungsten rod 6. The conductive nozzle 7 is connected to the welding machine 2 and is fitted over the tungsten rod 6. The conductive nozzle 7 is also connected to the shielding gas cylinder 3. A nozzle 8 is provided at the bottom of the conductive nozzle 7, through which the tungsten rod 6 can extend. The protective gas supplied by the protective gas cylinder 3 to the conductive nozzle 7 can be ejected from the nozzle 8; the support unit includes a first slider 10, a second slider 11 and a chuck 12. The first slider 10 is slidably mounted on the base 1 and the sliding direction of the first slider 10 is parallel to the horizontal direction. The second slider 11 is slidably connected to the first slider 10 and the sliding direction of the second slider 11 is parallel to the vertical direction. The chuck 12 is rotatably connected to the second slider 11 and the rotation axis of the chuck 12 is parallel to the horizontal direction. The chuck 12 can fix the welding torch 24 and drive the welding torch 24 to rotate.

[0033] In this invention, the welding equipment has a base 1 that provides stable support for all components. During welding, the welding machine 2 transmits current to the tungsten rod 6 through the conductive nozzle 7. An electric arc is generated between the tungsten rod 6 and the workpiece for welding. Simultaneously, the protective gas from the protective gas cylinder 3 is introduced into the conductive nozzle 7 and sprayed out through the nozzle 8 to form a protective area on the surface of the workpiece, ensuring welding quality. Furthermore, the first slider 10 of the support unit can adjust the position of the chuck 12 and the welding torch 24 horizontally, while the second slider 11 can adjust the position of the chuck 12 and the welding torch 24 vertically. The chuck 12 rotates the welding torch 24, enabling it to weld circumferential welds. This invention eliminates the ceramic nozzle of the argon arc welding torch in existing technologies, instead using the nozzle 8 on the conductive nozzle 7 to achieve gas protection during welding. It also reduces the size of the welding torch 24, allowing it to be inserted into smaller diameter pipes for internal welding, thus improving the flexibility and adaptability of the welding equipment.

[0034] It should also be noted that argon or other protective gases can be selected as the shielding gas. The specific welding process and welding principle are common knowledge to those skilled in the art and will not be elaborated here.

[0035] The conductive nozzle 7 has a through hole 9 at its bottom, through which a tungsten rod 6 can extend. The inner wall of the through hole 9 abuts against the tungsten rod 6 to ensure smooth current transmission. The nozzle 8 is connected to the through hole 9, meaning that the projected areas of the through hole 9 and the nozzle 8 coincide. The nozzle 8 forms a concave hole similar to an arc. See details. Figure 4 .

[0036] To improve the uniformity of the ejected protective gas, multiple nozzles 8 are used. The nozzles 8 are evenly distributed circumferentially around the axis of the through hole 9, so that the protective gas forms a ring-shaped protective area around the tungsten rod 6 on the surface of the welded workpiece, further ensuring the welding quality.

[0037] Specifically, the support unit also includes a first lead screw 13 and a second lead screw 14. The first lead screw 13 is rotatably mounted on the base 1, and the first slider 10 is threadedly connected to the first lead screw 13. The second lead screw 14 is rotatably mounted on the first slider 10, and the second slider 11 is threadedly connected to the second lead screw 14. The first lead screw 13 is connected to a first crank handle 15, and the second lead screw 14 is connected to a second crank handle 16. By using the first crank handle 15 to drive the first lead screw 13 to rotate, the first slider 10 can be slid to adjust the horizontal position of the welding torch 24. Similarly, by using the second crank handle 16 to drive the second lead screw 14 to rotate, the second slider 11 can be slid to adjust the vertical position of the welding torch 24. After moving the welding equipment to a suitable position, the position of the welding torch 24 can be adjusted using the support unit to meet the requirements of different welding conditions. In this specific embodiment, the first slider 10 is inverted T-shaped, and the bottom of the first slider 10 is slidably connected to the base 1. The vertical part of the first slider 10 provides support and a sliding foundation for the second slider 11. In practical applications, the sliding position of the first slider 10 can be parallel to the axial direction of the workpiece to be welded, or adjusted according to the actual welding requirements to meet different working conditions and improve the flexibility and adaptability of the welding equipment.

[0038] To further improve the accuracy of position adjustment, a first guide rail 17 is provided on the base 1, and the first slider 10 is slidably connected to the first guide rail 17; a second guide rail is provided on the first slider 10, and the second slider 11 is slidably connected to the second guide rail. The first guide rail 17 and the second guide rail can be used to guide the reciprocating sliding of the first slider 10 and the second slider 11, thereby improving the motion accuracy of the first slider 10 and the second slider 11 and improving the reliability of the position adjustment of the support unit.

[0039] More specifically, the support unit also includes a servo motor 18, a first transmission gear 19, and a second transmission gear 20. The servo motor 18 is mounted on the second slider 11, and both the first transmission gear 19 and the second transmission gear 20 are rotatably mounted on the second slider 11. The output end of the servo motor 18 is connected to the first transmission gear 19, and the first transmission gear 19 meshes with the second transmission gear 20. The chuck 12 meshes with the second transmission gear 20. The servo motor 18 drives the first transmission gear 19 to move, and the first transmission gear 19 transmits torque to the second transmission gear 20. The second transmission gear 20 then drives the chuck 12 to rotate, and the chuck 12 drives the welding torch 24 to rotate to complete the circumferential weld. In this specific embodiment, the servo motor 18 uses a gear transmission mechanism to transmit torque. The gear transmission mechanism has a compact structure and reliable transmission. In other specific embodiments achievable by this utility model, other types of transmission mechanisms can also be selected, such as sprocket drives, belt drives, etc.

[0040] It should also be noted that the main unit also includes a connecting rod 21. One end of the connecting rod 21 is detachably connected to the chuck 12, and the other end of the connecting rod 21 is connected to the welding torch 24 to stably support the welding torch 24, so that the welding torch 24 can be inserted into the pipe for internal welding.

[0041] Furthermore, the chuck 12 has a slot 22 and a block 23. One end of the connecting rod 21 can extend into the slot 22, and the block 23 can connect with the chuck 12 and clamp the connecting rod 21 to fix the relative position of the connecting rod 21 and the chuck 12, ensuring the stability of the connecting rod 21 and providing stable support for the subsequent welding work of the welding torch 24.

[0042] It is important to emphasize that the connection position between the clamping block 23 and the chuck 12 can be adjusted to accommodate welding workpieces of different specifications. When the welding workpiece is a pipe, the relative position of the clamping block 23 and the chuck 12 can be adjusted according to the pipe diameter of the welding workpiece, further enhancing the flexibility and adaptability of the welding equipment while clamping the connecting rod 21. In a specific embodiment of this utility model, the connecting rod 21 can be connected to the clamping block 23. The clamping block 23 can slide along the groove 22 to adjust the relative position of the connecting rod 21 and the chuck 12. The groove 22 is radially arranged along the chuck 12, thereby adjusting the position of the welding torch 24. The clamping block 23 and the chuck 12 can be connected by screws. The position of the clamping block 23 is fixed by tightening screws, realizing stepless adjustment of the clamping block 23 within the groove 22. This simplifies the equipment structure and improves the adaptability of the equipment while providing convenient adjustment.

[0043] It should also be noted that the welding torch 24 is connected to the welding machine 2 via a cable, and the welding torch 24 is connected to the protective gas cylinder 3 via a gas pipe. The connecting rod 21 is a hollow rod, and the cable and gas pipe pass through the connecting rod 21 to ensure smooth current transmission and protective gas delivery, thereby improving the reliability of the equipment.

[0044] In this specific embodiment, the conductive nozzle 7 is threadedly connected to the gun tail 4, making the connection secure and easy to assemble and disassemble.

[0045] In practical applications, casters 25 can be installed at the bottom of the base 1 to facilitate the movement of the welding equipment.

[0046] The welding equipment of this utility model simplifies the structure of the welding torch 24, omits the ceramic nozzle, and opens the spray hole 8 on the conductive nozzle 7 to realize argon gas protection during the welding process. It reduces the volume of the welding torch 24, making the welding torch 24 adaptable to welding of inner holes with small pipe diameters, and improving the flexibility and adaptability of the welding equipment.

[0047] Example 2

[0048] This embodiment provides a welding gun, which has the same structure as the welding gun 24 in Embodiment 1, and will not be described again here.

[0049] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A welding apparatus characterized by comprising: The utility model relates to a welding machine, and particularly relates to a welding machine with a supporting unit. The utility model discloses a welding machine, and particularly relates to a welding machine with a supporting unit. The utility model discloses a welding machine, and particularly relates to a welding machine with a supporting unit.

2. The welding apparatus of claim 1, wherein: The utility model discloses a welding machine, and particularly relates to a welding machine with a supporting unit.

3. The welding apparatus of claim 2, wherein: The utility model discloses a welding machine, and particularly relates to a welding machine with a supporting unit.

4. The welding apparatus of claim 1, wherein: The utility model discloses a welding machine, and particularly relates to a welding machine with a supporting unit.

5. The welding apparatus of claim 4, wherein: The utility model discloses a welding machine, and particularly relates to a welding machine with a supporting unit.

6. The welding apparatus of claim 1, wherein: The utility model discloses a welding machine, and particularly relates to a welding machine with a supporting unit.

7. The welding apparatus of claim 1, wherein: The utility model discloses a welding machine, and particularly relates to a welding machine with a supporting unit.

8. The welding apparatus of claim 7, wherein: The utility model discloses a welding machine, and particularly relates to a welding machine with a supporting unit. The utility model discloses a welding machine, and particularly relates to a welding machine with a supporting unit.

9. The welding apparatus of claim 7, wherein: The utility model discloses a welding machine, and particularly relates to a welding machine with a supporting unit. The utility model discloses a welding machine, and particularly relates to a welding machine with a supporting unit. The utility model discloses a welding machine, and particularly relates to a welding machine with a supporting unit. The utility model discloses a welding machine, and particularly relates to a welding machine with a supporting unit. The utility model discloses a welding machine, and particularly relates to a welding machine with a supporting unit. The utility model discloses a welding machine, and particularly relates to a welding machine with a supporting unit. The utility model discloses a welding machine, and particularly relates to a welding machine with a supporting unit. The utility model discloses a welding machine, and particularly relates to a welding machine with a supporting unit. 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