Air duct forming device

Abstract

The utility model belongs to the technical field of air duct forming, and particularly relates to an air duct forming device which comprises an installation plate, a welding gun is installed on the bottom side of the middle end of the installation plate, movable rods are installed in the two ends of the installation plate in a sliding mode, limiting blocks are installed on the top sides of the movable rods, and an arc-shaped plate is jointly installed at the bottom ends of the movable rods. Two compression springs are fixedly connected between the arc-shaped plate and the mounting plate, an electrode ring is mounted in the top side of the cylinder, and an electrode plate is mounted on the top side of the limiting block; when a welding gun gradually gets close to a welding seam of an air duct, an arc-shaped plate firstly makes contact with the surface of the air duct, a mounting plate continues to move downwards, a compression spring starts to be compressed, a movable rod slides upwards to drive a limiting block and an electrode plate to move upwards, and when the outer diameter of the electrode plate is tangent to the inner arc face of an electrode ring, a control panel controls an air cylinder to stop acting; it is ensured that the distance between the bottom end of the welding gun and a weld joint is located at the optimal welding position, and the welding quality is prevented from being affected by too short or too long distance.

Description

Technical Field

[0001] This utility model relates to the field of duct forming technology, specifically a duct forming device. Background Technology

[0002] In the process of forming the duct, when the duct is directly rolled from a whole roll of sheet metal, a longitudinal gap will be formed at the joint after the sheet metal is rolled into a cylindrical shape. This gap needs to be sealed by welding to ensure the ventilation performance of the duct. Therefore, a duct forming device is required.

[0003] A Chinese patent with authorization announcement number CN115091047A discloses a laser welding device for straight seams of axial flow ducts, including a housing. A support platform is fixedly connected to the lower end of the housing, and the duct to be welded is placed on the upper surface of the support platform. A fixing mechanism is provided on the outer surface of the duct. The fixing mechanism can squeeze and fix the duct while closing the weld seam at the point to be welded to facilitate welding. A driving component for driving the displacement assembly is provided on the rear side of the housing. This invention, through the design of the fixing mechanism, can fix the duct to be processed, so as to ensure welding stability and improve welding quality during subsequent welding processes.

[0004] However, the above-mentioned device still has some problems. In practical applications, if the welding gun is too far from the weld, the arc heat is insufficient and the base material cannot be fully melted, resulting in incomplete penetration defects. If the welding gun is too close to the weld, a large amount of heat is concentrated in a small area, causing excessive melting of the base material. For thinner duct plates, this can easily cause burn-through and form holes, making it difficult to guarantee the quality of the weld. Therefore, a duct forming device is proposed to address the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology and solve the problems mentioned in the background technology, this utility model proposes a wind tunnel forming device.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The wind tunnel forming device of this utility model includes a workbench, an mounting plate installed directly above the workbench, a welding gun installed on the bottom side of the middle end of the mounting plate, movable rods slidably installed inside both ends of the mounting plate, limit blocks installed on the top side of each movable rod, and an arc plate installed at the bottom end of the movable rods. A through hole is opened inside the middle end of the arc plate, and the through hole is located directly below the welding gun. Two compression springs are fixed between the arc plate and the mounting plate, and the compression springs are sleeved on the outside of the movable rods. A cylinder is installed on the top side of one end of the mounting plate, and an electrode ring is installed inside the top side of the cylinder. An electrode plate is installed on the top side of the limit block directly below the electrode ring. The radius of the electrode plate is less than or equal to the inner diameter of the electrode ring. When the outer diameter of the electrode plate is tangent to the inner arc surface of the electrode ring, the distance between the bottom end of the welding gun and the weld is the optimal welding position, which realizes precise control of the distance between the welding gun and the weld, avoids the position being too close or too far, and ensures the welding quality.

[0007] Preferably, a fixed frame is installed on the top side of the workbench, a servo motor is installed on one side of the fixed frame, a threaded rod is installed at the output end of the servo motor, a sliding groove is opened inside the top side of the fixed frame, a sliding block is slidably installed inside the sliding groove, a threaded hole is opened inside the sliding block, one end of the threaded rod passes through the threaded hole and is rotatably installed inside one side of the fixed frame, a cylinder is installed on the bottom side of the sliding block, and a mounting plate is fixedly installed on the bottom side of the action end of the cylinder, so that the welding gun can move flexibly along the weld seam to complete the forming operation of the air duct.

[0008] Preferably, a mounting ring is installed on one side of the fixing frame, and three sets of three telescopic rods are installed at equal intervals on the inner side of the mounting ring. Each set of telescopic rods has a fixing clamp installed at its working end. The fixing clamp contacts the outer side of the air duct during operation and is used to clamp the outer side of the air duct.

[0009] Preferably, a support column is installed at the center of one side of the mounting ring, and three electric push rods are installed at equal intervals on the outer side of the support column. Each set of electric push rods has an arc-shaped clamp plate installed at its working end. The arc-shaped clamp plate contacts the inner wall of the air duct during operation to support the inner side of the air duct and improve welding stability.

[0010] Preferably, a warning light is installed on one side of the fixing frame. The warning light is electrically connected to the electrode ring, electrode sheet, and cylinder to remind the operator to reach the appropriate welding distance with the welding gun.

[0011] Preferably, a control panel is installed on one side of the fixing frame. The control panel is electrically connected to the electrode ring, electrode sheet, cylinder, welding gun, and warning light. It is used for signal transmission to the electrode ring and electrode sheet, as well as operation control of the cylinder, welding gun, and warning light, thereby improving the automation level of the device and reducing the difficulty of operation.

[0012] The advantages of this utility model are:

[0013] 1. When the welding gun of this utility model gradually approaches the weld seam of the air duct, the arc plate first contacts the surface of the air duct. As the mounting plate continues to move downward, the arc plate is resisted by the air duct, the compression spring begins to be compressed, the moving rod slides upward, and drives the limit block and electrode plate to move upward. When the outer diameter of the electrode plate is tangent to the inner arc surface of the electrode ring, an electrical signal is generated. The control panel controls the cylinder to stop moving, ensuring that the distance between the bottom end of the welding gun and the weld seam is in the optimal welding position, avoiding the welding quality being affected by the distance being too close or too far.

[0014] 2. In this invention, a coiled sheet metal is placed between a fixed clamping plate and an arc-shaped clamping plate. The telescopic rods are activated, and all three sets of telescopic rods extend synchronously, jointly pushing the fixed clamping plate outwards until it contacts the outer side of the air duct. This provides initial fixation and positioning of the air duct from the outside. Next, the electric push rods are activated, and all three sets of electric push rods extend synchronously. Their actuating ends jointly push the arc-shaped clamping plate towards the inner wall of the air duct until it is tightly fitted against the inner wall. The arc-shaped clamping plate supports and fixes the air duct from the inside, further improving the stability of the air duct and ensuring that it does not deform or shift during welding. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0016] Figure 1 This is a schematic diagram of the intermediate axis side view of the present invention;

[0017] Figure 2 This is a schematic diagram of the main structure of the air duct forming device;

[0018] Figure 3 A schematic diagram of the welding gun position adjustment component of the air duct forming device;

[0019] Figure 4 A schematic diagram of the trigger component structure of the air duct forming device;

[0020] Figure 5 This is a schematic diagram of the structure of the air duct forming device's air duct sheet clamping assembly.

[0021] In the diagram: 1. Workbench; 2. Mounting plate; 3. Welding gun; 4. Movable rod; 5. Limiting block; 6. Arc-shaped plate; 7. Through hole; 8. Compression spring; 9. Cylinder; 10. Electrode ring; 11. Electrode plate; 12. Fixing frame; 13. Servo motor; 14. Threaded rod; 15. Slide groove; 16. Sliding block; 17. Cylinder; 18. Mounting ring; 19. Telescopic rod; 20. Fixing clamp; 21. Support column; 22. Electric push rod; 23. Arc-shaped clamp; 24. Warning light; 25. Control panel. Detailed Implementation

[0022] 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 scope of protection of the present utility model.

[0023] Please see Figure 1-4 As shown, a duct forming device includes a workbench 1, an mounting plate 2 mounted directly above the workbench 1, a welding gun 3 mounted on the bottom side of the middle end of the mounting plate 2, movable rods 4 slidably mounted inside both ends of the mounting plate 2, limit blocks 5 mounted on the top side of each movable rod 4, and an arc-shaped plate 6 mounted at the bottom end of each movable rod 4. A through hole 7 is formed inside the middle end of the arc-shaped plate 6, located directly below the welding gun 3. The arc-shaped plate 6 is fixedly connected to the mounting plate 2. There are two compression springs 8, which are sleeved on the outside of the movable rod 4. A cylinder 9 is installed on the top side of one end of the mounting plate 2. An electrode ring 10 is installed inside the top side of the cylinder 9. An electrode plate 11 is installed on the top side of the limiting block 5 directly below the electrode ring 10. The radius of the electrode plate 11 is less than or equal to the inner diameter of the electrode ring 10. When the outer diameter of the electrode plate 11 is tangent to the inner arc surface of the electrode ring 10, the distance between the bottom end of the welding gun 3 and the weld is the optimal welding position.

[0024] A fixed frame 12 is mounted on the top side of the workbench 1. A servo motor 13 is mounted on one side of the fixed frame 12. A threaded rod 14 is mounted on the output end of the servo motor 13. A sliding groove 15 is formed inside the top side of the fixed frame 12. A sliding block 16 is slidably mounted inside the sliding groove 15. A threaded hole is formed inside the sliding block 16. One end of the threaded rod 14 passes through the threaded hole and is rotatably mounted inside one side of the fixed frame 12. A cylinder 17 is mounted on the bottom side of the sliding block 16. A mounting plate 2 is fixedly mounted on the bottom side of the working end of the cylinder 17. A warning light 24 is mounted on one side of the fixed frame 12. A control panel 25 is mounted on one side of the fixed frame 12. During operation, in practical applications, if the welding gun 3 is too far from the weld, the arc heat is insufficient to fully melt the base material, resulting in incomplete penetration defects. If the welding gun 3 is too close to the weld, a large amount of heat is concentrated in a small area, causing excessive melting of the base material. For thinner duct plates, this can easily cause burn-through, forming holes, which can lead to… The quality of welding is difficult to guarantee. By activating cylinder 17, the working end of cylinder 17 extends, causing the mounting plate 2 to move the welding gun 3 downward. As the welding gun 3 gradually approaches the weld seam of the duct, the arc plate 6 first contacts the surface of the duct. As the mounting plate 2 continues to move downward, the arc plate 6 is resisted by the duct, the compression spring 8 is compressed, and the moving rod 4 slides upward, causing the limit block 5 and the electrode plate 11 to move upward. When the outer diameter of the electrode plate 11 is tangent to the inner arc surface of the electrode ring 10, an electrical signal is generated. This signal is transmitted to the control panel 25 through the circuit. After receiving the signal, the control panel 25 controls the warning light 24 to light up, reminding the operator that the welding gun 3 has reached the appropriate welding distance. On the other hand, the control panel 25 controls cylinder 17 to stop moving, ensuring that the distance between the bottom end of the welding gun 3 and the weld seam is at the optimal welding position, avoiding the welding quality being affected by the distance being too close or too far. The specific model of the welding gun 3 is LANSITE-DSH-BX.

[0025] Once the welding gun 3 reaches the optimal welding position, the servo motor 13 is activated, and its output drives the threaded rod 14 to rotate, causing the sliding block 16 to move along the slide groove 15. The sliding block 16 drives the cylinder 17 and the welding gun 3 to move along the weld seam of the air duct. The welding gun 3 is then activated and begins to weld the longitudinal gap at the joint of the air duct through the through hole 7. During the movement, the arc plate 6 remains in contact with the surface of the air duct. Through the elastic action of the compression spring 8, the distance between the welding gun 3 and the weld seam is kept at the optimal level until the welding of the entire air duct is completed.

[0026] Please see Figure 1 , 3As shown in Figure 5, an installation ring 18 is installed on one side of the fixed frame 12. Three sets of three telescopic rods 19 are installed at equal intervals on the inner side of the installation ring 18. Each set of telescopic rods 19 has a fixed clamp 20 installed at its working end. The fixed clamp 20 contacts the outer side of the air duct during operation.

[0027] A support column 21 is installed at the center of one side of the mounting ring 18. Three electric push rods 22 are installed equidistantly on the outer side of the support column 21. Each set of electric push rods 22 has an arc-shaped clamping plate 23 installed at its working end. The arc-shaped clamping plate 23 contacts the inner wall of the air duct during operation. During operation, a longitudinal gap will be formed at the joint of the air duct during the forming process. This gap needs to be sealed by welding to ensure the ventilation performance of the air duct. In order to ensure stable welding operation of the air duct, firstly, the rolled plate into a cylindrical shape is placed inside the mounting ring 18 between the clamping plate 20 and the arc-shaped clamping plate 23. The control panel 25 starts the telescopic rods 19, and the three sets of telescopic rods 19 extend synchronously. The working ends of each set of telescopic rods 19 work together to push the fixed clamping plate 20 to move outwards from the outside of the air duct until the fixed clamping plate 20 contacts the outside of the air duct, thus initially fixing and positioning the air duct from the outside. Then, the control panel 25 controls the electric push rods 22 to start, and the three sets of electric push rods 22 extend synchronously. The working ends of each set of electric push rods 22 work together to push the arc-shaped clamping plate 23 to move towards the inner wall of the air duct until the arc-shaped clamping plate 23 fits tightly against the inner wall of the air duct. The arc-shaped clamping plate 23 supports and fixes the air duct from the inside, further improving the stability of the air duct and ensuring that the air duct will not deform or shift during the welding process. At this time, the longitudinal gap at the joint of the air duct is located directly below the welding gun 3, preparing for subsequent welding work.

[0028] Working principle: First, the coiled plate is placed between the fixed clamp 20 and the arc-shaped clamp 23 inside the mounting ring 18. The control panel 25 activates the telescopic rods 19, and the three sets of telescopic rods 19 extend synchronously. The working end of each set of telescopic rods 19 pushes the fixed clamp 20 to move outward until the fixed clamp 20 contacts the outside of the air duct, thus initially fixing and positioning the air duct from the outside. Next, the control panel 25 controls the electric push rods 22 to activate, and the three sets of electric push rods 22 extend synchronously. The working end of each set of electric push rods 22 pushes the arc-shaped clamp 23 to move inward until the arc-shaped clamp 23 is tightly fitted to the inner wall of the air duct. The arc-shaped clamp 23 supports and fixes the air duct from the inside, further improving the stability of the air duct and ensuring that the air duct will not deform or shift during welding. At this time, the longitudinal gap at the joint of the air duct is located directly below the welding gun 3, preparing for subsequent welding work.

[0029] By activating cylinder 17, the working end of cylinder 17 extends, causing mounting plate 2 to move welding gun 3 downward. As welding gun 3 gradually approaches the weld seam of the duct, arc plate 6 first contacts the surface of the duct. As mounting plate 2 continues to move downward, arc plate 6 is resisted by the duct, compression spring 8 is compressed, and moving rod 4 slides upward, causing limit block 5 and electrode plate 11 to move upward. When the outer diameter of electrode plate 11 is tangent to the inner arc surface of electrode ring 10, an electrical signal is generated. This signal is transmitted to control panel 25 through the circuit. After receiving the signal, control panel 25 controls warning light 24 to illuminate, reminding the operator that welding gun 3 has reached the appropriate welding distance. On the other hand, control panel 25 controls cylinder 17 to stop, ensuring that the distance between the bottom of welding gun 3 and weld seam is at the optimal welding position, avoiding affecting welding quality due to distance being too close or too far. The specific model of welding gun 3 is LANSITE-DSH-BX.

[0030] Once the welding gun 3 reaches the optimal welding position, the servo motor 13 is activated, and its output drives the threaded rod 14 to rotate, causing the sliding block 16 to move along the slide groove 15. The sliding block 16 drives the cylinder 17 and the welding gun 3 to move along the weld seam of the air duct. The welding gun 3 is then activated and begins to weld the longitudinal gap at the joint of the air duct through the through hole 7. During the movement, the arc plate 6 remains in contact with the surface of the air duct. Through the elastic action of the compression spring 8, the distance between the welding gun 3 and the weld seam is kept at the optimal level until the welding of the entire air duct is completed.

[0031] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A duster forming apparatus characterized by: The application relates to a welding gun device, which comprises a workbench (1), a mounting plate (2) mounted above the workbench (1), a welding gun (3) mounted at the middle end bottom side of the mounting plate (2), movable rods (4) slidably mounted at the two end interiors of the mounting plate (2), limiting blocks (5) mounted at the top sides of the movable rods (4), an arc-shaped plate (6) commonly mounted at the bottom ends of the movable rods (4), a through hole (7) formed at the middle end interior of the arc-shaped plate (6), the through hole (7) located below the welding gun (3), two compression springs (8) fixedly connected between the arc-shaped plate (6) and the mounting plate (2), the compression springs (8) sleeved at the outer sides of the movable rods (4), a cylinder (9) mounted at the one end top side of the mounting plate (2), an electrode ring (10) mounted at the top side interior of the cylinder (9), an electrode sheet (11) mounted at the top side of the limiting block (5) below the electrode ring (10), the radius of the electrode sheet (11) being less than or equal to the inner diameter of the electrode ring (10), and the distance between the bottom end of the welding gun (3) and a weld being an optimal welding position when the outer diameter of the electrode sheet (11) is tangent to the inner arc surface of the electrode ring (10).

2. A duster forming apparatus as claimed in claim 1, wherein: A fixed frame (12) is mounted at the top side of the workbench (1), a servo motor (13) is mounted at one side of the fixed frame (12), a threaded rod (14) is mounted at the output end of the servo motor (13), a sliding groove (15) is formed at the top side interior of the fixed frame (12), a sliding block (16) is slidably mounted in the sliding groove (15), a screw hole is formed in the interior of the sliding block (16), one end of the threaded rod (14) penetrates through the screw hole and is rotationally mounted in the interior of one side of the fixed frame (12), and an air cylinder (17) is mounted at the bottom side of the sliding block (16).

3. A duster forming apparatus as claimed in claim 2, wherein: A mounting ring (18) is mounted at one side of the fixed frame (12), three groups of three telescopic rods (19) are equidistantly mounted at the inner side of the mounting ring (18), a fixed clamping plate (20) is commonly mounted at the action end of each group of telescopic rods (19), and the fixed clamping plate (20) is in contact with the outer side of a wind cylinder during operation.

4. A duster forming apparatus as claimed in claim 3, wherein: A supporting column (21) is mounted at the center position of one side of the mounting ring (18), three groups of three electric push rods (22) are equidistantly mounted at the outer side of the supporting column (21), an arc-shaped clamping plate (23) is commonly mounted at the action end of each group of electric push rods (22), and the arc-shaped clamping plate (23) is in contact with the inner wall of the wind cylinder during operation.

5. A duster forming apparatus as claimed in claim 4, wherein: A warning lamp (24) is mounted at one side of the fixed frame (12), and the warning lamp (24) is electrically connected between the electrode ring (10), the electrode sheet (11) and the air cylinder (17).

6. A duster forming apparatus as claimed in claim 5, wherein: One side of the fixed frame (12) is provided with a control panel (25), which is electrically connected with the electrode ring (10), the electrode sheet (11), the air cylinder (17), the welding gun (3) and the warning light (24), and is used for signal transmission of the electrode ring (10) and the electrode sheet (11), and operation control of the air cylinder (17), the welding gun (3) and the warning light (24).

Images