A duct welding apparatus
By designing a duct welding equipment that includes a fixed frame, hydraulic cylinder, welding gun, rotating sleeve and gears, the problems of high labor intensity and low production efficiency of operators have been solved, realizing automatic welding and high-efficiency production of ducts.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAMEN JINSHUFENG VENTILATION EQUIP CO LTD
- Filing Date
- 2025-04-30
- Publication Date
- 2026-05-29
AI Technical Summary
Existing duct welding equipment results in high labor intensity for operators and low production efficiency.
Design a duct welding device, comprising a workbench, a fixed frame, a hydraulic cylinder, a welding torch, a rotating sleeve, gears, and a drive motor. The duct is fixed by fixing bolts, and the automatic rotation welding of the duct is achieved by using gear and belt transmission.
It enables automated welding of air ducts, reducing the labor intensity of operators and improving production efficiency.
Smart Images

Figure CN224295119U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of welding equipment technology, and more specifically, to a duct welding device. Background Technology
[0002] Ducts are made of metal, non-metal sheet metal or other materials and are used for air circulation. Existing factories or facilities are equipped with a large number of ducts to supply the gases required for product manufacturing processes or to discharge the gases generated during product manufacturing processes.
[0003] Based on the above, the inventors have discovered that when welding ducts, it is necessary to fix the ducts and rotate them to weld the outer perimeter. This may increase the labor intensity of operators and reduce production efficiency after prolonged use. Therefore, in view of this, the inventors have studied and improved the existing structure to provide a duct welding device with greater practical value. Utility Model Content
[0004] 1. Technical problems to be solved
[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide a duct welding equipment that can realize automatic welding operation of ducts, thereby increasing the labor intensity of operators and reducing production efficiency.
[0006] 2. Technical Solution
[0007] To solve the above problems, the present invention adopts the following technical solution.
[0008] A duct welding device includes a workbench, a fixed frame welded to the top of the workbench, a hydraulic cylinder fixedly connected to the center of the top of the fixed frame, a welding gun fixedly connected to the bottom of the telescopic shaft of the hydraulic cylinder, a positioning block fixedly connected to the center of the top of the workbench, two mounting brackets fixedly connected to the top of the workbench, rotating sleeves rotatably connected inside the two mounting brackets, limit rings fixedly connected to the surfaces of the two rotating sleeves, gear one fixedly connected to one end of the surfaces of the two rotating sleeves, and an installation wheel fixedly connected to one end of one of the rotating sleeves. Two through slots are formed on the top of the workbench, a drive motor is fixedly welded to one side of the top of the workbench, the output end of the drive motor is driven by a coupling to a drive wheel, the surface of the drive wheel is connected to the surface of the installation wheel by a belt drive, a limit groove is formed inside the mounting bracket, a fixed block is fixedly connected to the center of the bottom of the workbench, a rotating shaft rotatably connected inside the fixed block, gear two fixedly connected to both ends of the rotating shaft, connecting blocks are fixedly connected to the tops of the two rotating sleeves, and fixing bolts are threaded into the interiors of the two connecting blocks.
[0009] Furthermore, the two rotating sleeves are arranged symmetrically, and the welding torch is located directly above the positioning block.
[0010] Furthermore, the inner bottom of the rotating sleeve is flush with the top of the positioning block, and the limiting ring is rotatably connected inside the limiting groove.
[0011] Furthermore, the two sides of the fixing frame are respectively open, and the two sides of the surface of the drive wheel and the mounting wheel are respectively provided with locking blocks.
[0012] Furthermore, the two sides of the fixing block are respectively attached to the inner sides of the two gears, and the width of the fixing block and the positioning block are the same.
[0013] Furthermore, the tops of the two gears 2 are respectively meshed with the bottoms of the two gears 1, and the tops of the two gears 2 are located inside the two through slots.
[0014] 3. Beneficial effects
[0015] Compared with existing technologies, the advantages of this utility model are:
[0016] (1) In this scheme, two fixing bolts are set, and a connecting block is set on the top of the two rotating sleeves. The fixing bolts are threaded inside the connecting block. The operator places the two air ducts inside the two rotating sleeves respectively, and fixes the air ducts on both sides by rotating the two fixing bolts, so that the welding gun can weld the two air ducts.
[0017] (2) In this scheme, by setting up a rotating sleeve, when welding the air ducts on both sides, it is necessary to rotate the air ducts to facilitate welding. Start the drive motor and drive one of the rotating sleeves to rotate via the belt. Since the two gears are respectively meshed with the two gears, and the rotating shaft is fixedly connected between the two gears, the other rotating sleeve will rotate synchronously, which facilitates the welding operation. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0019] Figure 2 This is a three-dimensional structural diagram of the rotating sleeve of this utility model;
[0020] Figure 3 This is a three-dimensional structural disassembly diagram of the mounting bracket of this utility model;
[0021] Figure 4 This is a three-dimensional structural diagram of the fixing block of this utility model.
[0022] Explanation of the labels in the diagram:
[0023] 1. Workbench; 2. Fixing frame; 3. Hydraulic cylinder; 4. Welding torch; 5. Positioning block; 6. Mounting frame; 7. Rotating sleeve; 8. Limiting ring; 9. Gear 1; 10. Mounting wheel; 11. Through groove; 12. Drive motor; 13. Belt; 14. Limiting groove; 15. Fixing block; 16. Rotating shaft; 17. Gear 2; 18. Connecting block; 19. Fixing bolt. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0025] Example:
[0026] Please see Figure 1 - Figure 4A duct welding device includes a workbench 1, a fixed frame 2 welded to the top of the workbench 1, a hydraulic cylinder 3 fixedly connected to the center of the top of the fixed frame 2, a welding gun 4 fixedly connected to the bottom of the telescopic shaft of the hydraulic cylinder 3, a positioning block 5 fixedly connected to the center of the top of the workbench 1, two mounting brackets 6 fixedly connected to the top of the workbench 1, rotating sleeves 7 rotatably connected inside the two mounting brackets 6, limit rings 8 fixedly connected to the surfaces of the two rotating sleeves 7, gears 9 fixedly connected to one end of the surfaces of the two rotating sleeves 7, and a mounting wheel 10 fixedly connected to one end of one of the rotating sleeves 7, two through slots 11 formed on the top of the workbench 1, and a drive motor 12 fixedly welded to one side of the top of the workbench 1, the output end of the drive motor 12 being connected to a coupling for transmission. There is a drive wheel, the surface of which is connected to the surface of the mounting wheel 10 via a belt 13. A limit groove 14 is opened on the inner side of the mounting frame 6. A fixing block 15 is fixedly connected to the bottom center end of the workbench 1. A rotating shaft 16 is rotatably connected inside the fixing block 15. Gears 17 are fixedly connected to both ends of the rotating shaft 16. Connecting blocks 18 are fixedly connected to the top of the two rotating sleeves 7. Fixing bolts 19 are threaded inside the two connecting blocks 18. The operator places the two air ducts inside the two rotating sleeves 7 respectively, and fixes the air ducts on both sides by rotating the two fixing bolts 19, so that the welding gun 4 can perform welding operations on the two air ducts.
[0027] See Figure 2 The two rotating sleeves 7 are symmetrically arranged, and the welding gun 4 is located directly above the positioning block 5.
[0028] See Figure 3 The inner bottom of the rotating sleeve 7 is flush with the top of the positioning block 5, and the limiting ring 8 is rotatably connected to the inside of the limiting groove 14; the two sides of the fixed frame 2 are respectively open, and the driving wheel and the mounting wheel 10 are respectively provided with locking blocks on both sides of their surfaces. The two rotating sleeves 7 are rotatably connected to the inside of the two mounting frames 6. In order to prevent the two rotating sleeves 7 from slipping, the two limiting rings 8 are respectively rotatably connected to the inside of the two limiting grooves 14 to restrict the position of the two rotating sleeves 7, thereby facilitating the rotation of the two rotating sleeves 7 inside the two mounting frames 6.
[0029] See Figure 4The two sides of the fixing block 15 are respectively attached to the inner sides of the two gears 17. The fixing block 15 and the positioning block 5 have the same width. The tops of the two gears 17 are respectively meshed with the bottoms of the two gears 9. The tops of the two gears 17 are located inside the two through slots 11. When welding the air ducts on both sides, the air ducts need to be rotated to facilitate welding. The drive motor 12 is started, and one of the rotating sleeves 7 is driven to rotate through the belt 13. Since the two gears 9 are respectively meshed with the two gears 17, the rotating shaft 16 is fixedly connected between the two gears 17, thereby driving the other rotating sleeve 7 to rotate synchronously, which facilitates the welding operation.
[0030] In use: Place the device in a horizontal position. The operator places the two air ducts into the interior of the rotating sleeve 7 through the openings on both sides of the fixing frame 2, so that the gap between the two air ducts is directly above the positioning block 5. A connecting block 18 is set on the top of the two rotating sleeves 7, and a fixing bolt 19 is threaded into the inside of the connecting block 18. By rotating the two fixing bolts 19, the air ducts on both sides are fixed, which facilitates the welding torch 4 to weld the two air ducts. Start the hydraulic cylinder 3 so that the welding torch 4 is in contact with the top of the two air ducts. Start the drive motor 12. When welding the air ducts on both sides, the air ducts need to be rotated to facilitate welding. Start the drive motor 12, which drives one of the rotating sleeves 7 to rotate through the belt 13. Since the two gears 1 9 are meshed with the two gears 2 17 respectively, and the rotating shaft 16 is fixedly connected between the two gears 2 17, the other rotating sleeve 7 is driven to rotate synchronously, thus completing the welding operation. This improves production efficiency and is highly practical.
[0031] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.
Claims
1. A duct welding device, comprising a workbench (1), wherein a fixed frame (2) is fixedly welded to the top of the workbench (1), a hydraulic cylinder (3) is fixedly connected to the center end of the top of the fixed frame (2), and a welding torch (4) is fixedly connected to the bottom of the telescopic shaft of the hydraulic cylinder (3), characterized in that: A positioning block (5) is fixedly connected to the center of the top of the workbench (1). Two mounting brackets (6) are fixedly connected to the top of the workbench (1). Rotating sleeves (7) are rotatably connected inside the two mounting brackets (6). Limiting rings (8) are fixedly connected to the surfaces of the two rotating sleeves (7). Gears (9) are fixedly connected to one end of the surfaces of the two rotating sleeves (7). A mounting wheel (10) is fixedly connected to one end of one of the rotating sleeves (7). Two through slots (11) are opened on the top of the workbench (1). A drive motor (12) is fixedly welded to one side of the top of the workbench (1). The output end of the motor (12) is connected to the drive wheel via a coupling. The surface of the drive wheel is connected to the surface of the mounting wheel (10) via a belt (13). A limit groove (14) is opened on the inner side of the mounting frame (6). A fixing block (15) is fixedly connected to the bottom center end of the worktable (1). A rotating shaft (16) is rotatably connected inside the fixing block (15). Gears (17) are fixedly connected to both ends of the rotating shaft (16). Connecting blocks (18) are fixedly connected to the top of the two rotating sleeves (7). Fixing bolts (19) are threadedly connected inside the two connecting blocks (18).
2. The duct welding equipment according to claim 1, characterized in that: The two rotating sleeves (7) are arranged symmetrically, and the welding gun (4) is located directly above the positioning block (5).
3. The duct welding equipment according to claim 1, characterized in that: The inner bottom of the rotating sleeve (7) is flush with the top of the positioning block (5), and the limiting ring (8) is rotatably connected to the inside of the limiting groove (14).
4. The duct welding equipment according to claim 1, characterized in that: The two sides of the fixing frame (2) are respectively open, and the two sides of the surface of the drive wheel and the mounting wheel (10) are respectively provided with locking blocks.
5. The duct welding equipment according to claim 1, characterized in that: The two sides of the fixing block (15) are respectively attached to the inner sides of the two gears (17), and the fixing block (15) has the same width as the positioning block (5).
6. The duct welding equipment according to claim 1, characterized in that: The tops of the two gears (17) are respectively meshed with the bottoms of the two gears (9), and the tops of the two gears (17) are located inside the two through slots (11).