Galvanized sheet air pipe flange welding tooling

Abstract

This utility model relates to the field of duct flange technology, and specifically discloses a welding fixture for galvanized sheet duct flanges. Before welding, two U-shaped pull rods can be held to pull two duct clamps outward. The two duct clamps slide open, and the galvanized sheet duct body can be placed on the upper end of the auxiliary positioning seat. After placement, the pull on the two duct clamps is released. At this time, under the action of the spring return force, the two duct clamps slide against the surface of the galvanized sheet duct body, and the edges and corners of the duct clamps will be against the surface of the flange body, resisting and limiting the non-welding surface. Then, by turning the adjusting screw, the flange clamps are driven to slide. During the sliding process, the flange clamps clamp both sides of the welding surface, thereby ensuring the stability of the flange body in the welding operation state. The operation method is simpler and faster, and better meets the auxiliary effect required for manual welding.

Description

Technical Field

[0001] This utility model relates to the field of duct flange technology, and in particular to a welding fixture for galvanized sheet duct flanges. Background Technology

[0002] In the field of duct processing and manufacturing, the welding quality of galvanized sheet duct flanges directly affects the performance and stability of the duct system. Galvanized sheet duct flange welding fixtures play a crucial role in ensuring welding accuracy and improving production efficiency, and are widely used in various ventilation duct manufacturing enterprises. Current equipment typically requires the following technologies in practical applications:

[0003] 1. Precision positioning technology: It can accurately determine the relative position of the galvanized sheet duct and the flange, ensuring the coaxiality and flatness of the two after welding, and reducing welding deviation.

[0004] 2. Reliable clamping technology: The galvanized sheet duct and flange are firmly clamped during the welding process to prevent displacement caused by welding stress and ensure welding quality.

[0005] 3. Height adjustment technology: Adaptable to galvanized sheet ducts and flanges of different specifications. By adjusting the height of the tooling, welding operations can be carried out at a suitable working height, reducing the labor intensity of operators.

[0006] 4. Convenient operation technology: It facilitates various operations for operators, such as loading and unloading of workpieces and adjustment of fixtures, thereby improving production efficiency.

[0007] Currently, various welding fixtures are available on the market for welding galvanized sheet ducts and flanges. In large-scale automated production workshops, highly automated welding fixtures are commonly used. These fixtures are typically equipped with sophisticated robotic arms, automatic positioning systems, and high-precision welding equipment. They can automatically complete the positioning, clamping, and welding of galvanized sheet ducts and flanges according to preset programs, resulting in high production efficiency and stable welding quality.

[0008] However, the above approach has a prominent problem: for most small-scale processing sites where welding is done manually, the existing tooling is obviously unsuitable. Such tooling is bulky and relatively expensive, requiring a large production space for installation and operation. Small processing sites usually have limited space, making it difficult to meet their space requirements. More importantly, the production tasks of small processing sites are often characterized by small batches and multiple varieties, and the fixed programs and large-scale production modes of large-scale automated tooling cannot flexibly adapt to such diverse production needs. Utility Model Content

[0009] To address the shortcomings of existing technologies, this utility model provides a welding fixture for galvanized sheet duct flanges. This solves the problem that existing fixtures are clearly unsuitable for most small-scale processing sites where welding is done manually. These fixtures are bulky and relatively expensive, requiring a large production space for installation and operation. Small processing sites typically have limited space, making it difficult to meet their space requirements. More importantly, the production tasks in small processing sites are often characterized by small batches and multiple varieties, and the fixed programs and large-scale production modes of large-scale automated fixtures cannot flexibly adapt to these diverse production needs.

[0010] To achieve the above objectives, this utility model provides the following technical solution:

[0011] A welding fixture for flanges of galvanized sheet ductwork includes a galvanized sheet duct body. An auxiliary positioning seat is provided at the lower end of the galvanized sheet duct body. Two duct clamps are slidably connected to the upper end of the auxiliary positioning seat. Both duct clamps are in contact with the outer surface of the galvanized sheet duct body. Tension springs are sleeved on the inner surfaces of the two duct clamps and the auxiliary positioning seat. Flange clamps are slidably connected inside the two duct clamps. Adjusting screws are rotatably connected inside the two duct clamps. The two flange clamps are threaded to the outer surfaces of the two adjusting screws. Rectangular sliding blocks are fixedly connected to the outer surfaces of the two flange clamps.

[0012] Preferably, the two rectangular sliding blocks are slidably connected inside the two duct clamps, and the auxiliary positioning seat is fixedly connected with a slide rail.

[0013] Preferably, both of the duct clamps have internal grooves, and both grooves are located on the outer surface of the slide rail.

[0014] Preferably, a U-shaped tie rod is fixedly connected to the outer surfaces of the two duct clamps at the ends that are far apart from each other, and a height-adjustable base plate is provided at the lower end of the auxiliary positioning seat.

[0015] Preferably, both the auxiliary positioning seat and the height adjustment base plate are internally threaded with assembly bolts, and both adjustment screws are fixedly connected to the outer surface with rubber anti-slip handles.

[0016] Preferably, a flange plate body is provided on the outer surface of the galvanized sheet duct body, and the flange plate body is in contact with the duct clamp and the outer surface of the flange clamp.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Before welding, hold the two U-shaped levers and pull the two duct clamps outwards. The clamps will open, allowing the galvanized duct body to be placed on the auxiliary positioning seat. Release the clamps; the spring will then slide the clamps against the galvanized duct body, with the edges and corners adhering to the non-welding surfaces. Tilting the adjusting screw then slides the flange clamps, clamping both sides of the welding surface to ensure stability during welding. This method is simpler, faster, and more suitable for manual welding. Adjusting the clamping position by pulling the clamps and turning the adjusting screw provides greater flexibility and efficiency.

[0019] Second, when the duct clamp is sliding for clamping and limiting operation, the duct clamp slides on the surface of the slide rail through the internal sliding groove, thereby limiting its sliding trajectory while ensuring its smoothness. When the flange clamp slides to abut and limit the welding surface, the flange clamp slides in the duct clamp through the rectangular sliding block installed on its surface, thereby limiting its sliding trajectory. This makes the clamping and positioning operation of the device more directional and helps to improve the controllability of the device's movement and clamping. Attached Figure Description

[0020] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is an exploded view of the flange plate body connection of this utility model;

[0023] Figure 3 This is an exploded view of the duct clamp connection of this utility model;

[0024] Figure 4 This is an exploded view of the flange clamp connection of this utility model.

[0025] Legend: 11. Galvanized sheet duct body; 12. Auxiliary positioning seat; 13. Duct clamp; 14. Tension spring; 15. Flange clamp; 16. Adjusting screw; 17. Rectangular sliding block; 18. Slide rail; 19. Slide groove; 21. U-shaped tie rod; 22. Height adjustment base plate; 23. Assembly bolt; 24. Rubber anti-slip handle; 25. Flange body. Detailed Implementation

[0026] This application provides a welding fixture for galvanized sheet duct flanges, effectively solving the problem that existing fixtures are clearly unsuitable for most small-scale processing sites where welding is done manually. These fixtures are bulky, relatively expensive, and require significant production space for installation and operation. Small processing sites typically have limited space, making it difficult to meet their space requirements. More importantly, small processing sites often have small-batch, multi-variety production tasks, and the fixed programs and large-scale production modes of large automated fixtures cannot flexibly adapt to these diverse production needs. Before welding, two U-shaped levers can be held and pulled in opposite directions to slide the two duct clamps outwards, causing the clamps to open. At this point, the entire galvanized sheet duct body can be placed on the upper end of the auxiliary positioning seat. After placement, release the pull on the two duct clamps. Under the action of the spring return force, the two duct clamps will slide and adhere to the surface of the galvanized sheet duct body, with the edges and corners of the duct clamps adhering to the surface of the flange body, thus limiting contact with its non-welded surfaces. Then, by turning the adjusting screw, the flange clamps will slide, clamping both sides of the welding surface during the sliding process, thereby ensuring the stability of the flange body during welding operations. The operation method is simpler and faster, and better meets the auxiliary effect required for manual welding. The clamping and positioning adjustment is achieved by pulling the duct clamps and turning the adjusting screw, which is more flexible and efficient.

[0027] Example

[0028] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the technical solution in this application effectively addresses the significant inapplicability of existing tooling for most small-scale manual welding workshops. Such tooling is bulky and relatively expensive, requiring substantial production space for installation and operation. Small-scale workshops typically have limited space, making it difficult to meet their space requirements. More importantly, the production tasks in small-scale workshops often involve small batches and diverse product types. The fixed programs and large-scale production modes of large-scale automated tooling cannot flexibly adapt to these diverse production needs. The overall approach is as follows: A welding fixture for flanges of galvanized sheet ductwork includes a galvanized sheet duct body 11. An auxiliary positioning seat 12 is provided at the lower end of the galvanized sheet duct body 11. Two duct clamps 13 are slidably connected to the upper end of the auxiliary positioning seat 12. Both duct clamps 13 are in contact with the outer surface of the galvanized sheet duct body 11. Tension springs 14 are sleeved on the inner surfaces of both duct clamps 13 and the auxiliary positioning seat 12. Flange clamps 15 are slidably connected inside each of the two duct clamps 13. Adjusting screws 16 are rotatably connected inside each of the two duct clamps 13. The two flange clamps 15 are threaded onto two adjusting screws. Rectangular sliding blocks 17 are fixedly connected to the outer surfaces of the rod 16 and the two flange clamps 15. The two rectangular sliding blocks 17 are slidably connected to the inside of the two duct clamps 13. Before welding, the two U-shaped pull rods 21 can be held and pulled outwards to slide the two duct clamps 13. The two duct clamps 13 slide open, and the galvanized sheet duct body 11 can be placed on the upper end of the auxiliary positioning seat 12. After placement, the pull on the two duct clamps 13 is released. At this time, under the return force of the tension spring 14, the two duct clamps 13 slide against the auxiliary positioning seat 12. The galvanized sheet duct body 11 and the corners of the duct clamp 13 will be attached to the surface of the flange body 25, and the non-welded surface will be resisted and limited. At this time, the flange clamp 15 will be moved by turning the adjusting screw 16. During the sliding process, the flange clamp 15 will clamp the two sides of the welding surface (the welding operation is only performed at the upper and lower ends of the welding surface, and the two sides of the flange clamp 15 are not welded while in the clamped state). This ensures the stability of the flange body 25 in the welding operation state. The operation method is simpler and faster, and it is more in line with the auxiliary effect required for manual welding.

[0029] The auxiliary positioning seat 12 is internally fixedly connected to a slide rail 18. Both duct clamps 13 have internally formed grooves 19, which are located on the outer surface of the slide rail 18. U-shaped tie rods 21 are fixedly connected to the outer ends of the two duct clamps 13 that are far apart from each other. A height adjustment base plate 22 is located at the lower end of the auxiliary positioning seat 12. Assembly bolts 23 are threaded into both the auxiliary positioning seat 12 and the height adjustment base plate 22. Rubber anti-slip handles 24 are fixedly connected to the outer surfaces of both adjusting screws 16. When the duct clamps 13 slide for clamping and limiting operations, they slide on the surface of the slide rail 18 through the internally formed grooves 19, thus limiting their sliding trajectory while ensuring smooth sliding. The flange clamp 15 slides for welding. When the flange clamp 15 is in contact with the limit, it slides in the duct clamp 13 through the rectangular sliding block 17 installed on its surface, thereby limiting its sliding trajectory, making the clamping and positioning operation of the device more directional, which is conducive to improving the controllability of the device's movement and clamping. At the lower end of the auxiliary positioning seat 12, different numbers of height adjustment base plates 22 can be installed by screwing on the assembly bolts 23 (increasing the number of height adjustment base plates 22 also requires increasing the length of the assembly bolts 23). By using different numbers of height adjustment base plates 22, the auxiliary positioning seat 12 can adapt to the height changes brought about by the flange plate body 25, thereby making the auxiliary positioning seat 12 stably contact the ground. During the welding operation, it also provides support near the middle of the galvanized sheet duct body 11.

[0030] A flange plate body 25 is provided on the outer surface of the galvanized sheet duct body 11. The outer surfaces of the flange plate body 25, duct clamp 13, and flange clamp 15 are in contact. When welding the galvanized sheet duct body 11 and the flange plate body 25, the operator first places the flange plate body 25 on the surface of the galvanized sheet duct body 11. At this time, the connection between the galvanized sheet duct body 11 and the flange plate body 25 is welded and fixed. After welding, it can be flipped over and its back side can be welded and fixed. During the welding operation, the positioning fixture composed of the auxiliary positioning seat 12, duct clamp 13, and flange clamp 15 can be used to clamp and position the duct, thereby assisting the operator in the welding operation.

[0031] To address the problems existing in the prior art, this utility model provides a welding fixture for galvanized sheet duct flanges. Before welding, two U-shaped pull rods 21 can be held to pull two duct clamps 13 outwards, causing them to slide open. At this point, the galvanized sheet duct body 11 can be placed on the upper end of the auxiliary positioning seat 12. After placement, the pull on the two duct clamps 13 is released. Under the return force of the tension spring 14, the two duct clamps 13 slide and adhere to the galvanized sheet duct body. 11. The edges and corners of the duct clamp 13 will be attached to the surface of the flange plate body 25, and the non-welded surface will be resisted and limited. At this time, the flange clamp 15 will be slid by turning the adjusting screw 16. During the sliding process, the flange clamp 15 will clamp the two sides of the welding surface, thereby ensuring the stability of the flange plate body 25 in the welding operation state. The operation method is simpler and faster, and is more in line with the auxiliary effect required for manual welding. The clamping and positioning adjustment is achieved by pulling the duct clamp 13 and turning the adjusting screw 16, which is more flexible and efficient.

[0032] Working principle:

[0033] In the first step, when welding the galvanized sheet duct body 11 and the flange plate body 25, the worker first places the flange plate body 25 on the surface of the galvanized sheet duct body 11. At this time, the connection between the galvanized sheet duct body 11 and the flange plate body 25 is welded and fixed. After the welding is completed, it can be flipped over and its back can be welded and fixed. During the welding operation, the positioning fixture composed of the auxiliary positioning seat 12, the duct clamp 13 and the flange clamp 15 can be used to clamp and position it, thereby assisting the worker in the welding operation.

[0034] The second step involves holding the two U-shaped pull rods 21 and pulling the two duct clamps 13 outwards. The two duct clamps 13 open, allowing the galvanized sheet duct body 11 to be placed on the auxiliary positioning seat 12. After placement, release the pull on the two duct clamps 13. Under the return force of the tension spring 14, the two duct clamps 13 slide against the surface of the galvanized sheet duct body 11, with the edges of the clamps 13 adhering to the surface of the flange body 25, thus limiting contact with its non-welding surfaces. Then, by turning the adjusting screw 16, the flange clamp 15 slides. During this sliding process, the flange clamp 15 clamps both sides of the welding surface (welding is only performed at the top and bottom ends of the welding surface; welding is not performed near the clamped sides). This ensures the stability of the flange body 25 during welding, making the operation simpler, faster, and more suitable for manual welding. When the duct clamp 13 slides for clamping and limiting operation, the duct clamp 13 slides on the surface of the slide rail 18 through the internally opened slide groove 19, thereby limiting its sliding trajectory and ensuring its smooth sliding. When the flange clamp 15 slides to abut and limit the welding surface, the flange clamp 15 slides in the duct clamp 13 through the rectangular sliding block 17 installed on its surface, thereby limiting its sliding trajectory, making the clamping and positioning operation of the device more directional and improving the controllability of the device's movement and clamping. At the lower end of the auxiliary positioning seat 12, different numbers of height adjustment base plates 22 can be installed by screwing on the assembly bolts 23 (increasing the number of height adjustment base plates 22 also requires increasing the length of the assembly bolts 23). By using different numbers of height adjustment base plates 22, the auxiliary positioning seat 12 adapts to the height changes brought about by the flange plate body 25, thereby making the auxiliary positioning seat 12 stably contact the ground. During the welding operation, it also provides support near the middle of the galvanized sheet duct body 11.

[0035] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A welding fixture for flanges of galvanized steel ductwork, comprising a galvanized steel duct body (11), wherein an auxiliary positioning seat (12) is provided at the lower end of the galvanized steel duct body (11), characterized in that, The upper end of the auxiliary positioning seat (12) is slidably connected to two duct clamps (13). Both duct clamps (13) are in contact with the outer surface of the galvanized sheet duct body (11). Both duct clamps (13) and the inner surface of the auxiliary positioning seat (12) are fitted with tension springs (14). Both duct clamps (13) are slidably connected to flange clamps (15). Both duct clamps (13) are rotatably connected to adjusting screws (16). The two flange clamps (15) are threaded to the outer surface of the two adjusting screws (16). Rectangular sliding blocks (17) are fixedly connected to the outer surfaces of both flange plates (15).

2. The welding fixture for galvanized sheet duct flanges as described in claim 1, characterized in that, The two rectangular sliding blocks (17) are slidably connected inside the two duct clamps (13); The auxiliary positioning seat (12) is internally fixedly connected to a slide rail (18).

3. The welding fixture for galvanized sheet duct flanges as described in claim 2, characterized in that, Both of the aforementioned duct clamps (13) have internal grooves (19); Both of the aforementioned grooves (19) are disposed on the outer surface of the slide rail (18).

4. The welding fixture for galvanized sheet duct flanges as described in claim 3, characterized in that, U-shaped tie rods (21) are fixedly connected to the ends of the two duct clamps (13) that are far apart from each other; The lower end of the auxiliary positioning seat (12) is provided with a height adjustment base plate (22).

5. The welding fixture for galvanized sheet duct flanges as described in claim 4, characterized in that, The auxiliary positioning seat (12) and the height adjustment base plate (22) are both internally threaded with assembly bolts (23); Both of the adjusting screws (16) have rubber anti-slip handles (24) fixedly connected to their outer surfaces.

6. The welding fixture for galvanized sheet duct flanges as described in claim 5, characterized in that, The outer surface of the galvanized sheet duct body (11) is provided with a flange plate body (25); The outer surfaces of the flange plate body (25), the duct clamp (13), and the flange clamp (15) are attached to each other.

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