A flange welding device for ventilation duct connectors

Abstract

This utility model discloses a flange welding device for ventilation duct connectors, relating to the field of flange welding technology for duct connectors. Specifically, it is a flange welding device for ventilation duct connectors, including a base. A cylinder for accommodating a connecting pipe is mounted on the upper surface of the base. A cylinder assembly is provided on the outer side of the cylinder. The output end of the cylinder assembly is located inside the cylinder and connected to a drive mechanism. A sliding member is fixedly mounted on the upper surface of the base. A gripper is slidably connected to the upper surface of the sliding member. The drive mechanism is connected to the gripper and can drive the gripper to slide towards the center of the cylinder to fix the connecting pipe. A support rod is fixedly mounted on the upper surface of the base. A first annular clamping plate is fixedly connected to the upper surface of the support rod. A locking assembly is slidably connected to the upper surface of the first annular clamping plate. Through rack, gear and transmission assembly, the gripper can simultaneously clamp the connecting pipe and the second annular clamping plate can press down to tighten the flange, greatly shortening the clamping time and improving work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of pipe connector flange welding technology, specifically a ventilation duct connector flange welding device. Background Technology

[0002] Flanging welding is a core process in the manufacturing of pipes and pressure vessels. It refers to the technique of pre-forming annular flanges at the end of the pipe and then connecting them to the openings in the shell with circumferential fillet welds. Flanging can serve as a transition zone to disperse stress and avoid deformation and cracking caused by direct welding of thin-walled shells.

[0003] A search revealed a utility model patent with publication number "CN221639936U" that discloses a flange welding device for ventilation duct connectors. The device uses three cylinders to fix the placed pipes, then places the flange on the outer periphery of the pipes. One cylinder drives a moving plate and an arc-shaped pressure plate to move above the flange. At this point, a rotating rod is rotated to drive the arc-shaped pressure plate to press down on the flange, thereby fixing the flange.

[0004] The above-mentioned ventilation duct connector flange welding device has the following shortcomings: before welding the flange, the pipe and flange need to be fixed in steps, which is not efficient. In addition, the flange needs to be tightened manually, which results in poor consistency and uneven tightening force, leading to flange deformation. Therefore, we propose a ventilation duct connector flange welding device. Utility Model Content

[0005] This invention provides a flange welding device for ventilation duct connectors, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a flange welding device for ventilation duct connectors, comprising a base, a cylinder for accommodating a connecting pipe mounted on the upper surface of the base, and a cylinder assembly on the outer side of the cylinder. The cylinder assembly is characterized in that: the output end of the cylinder assembly is located inside the cylinder and connected to a driving mechanism; a sliding member is fixedly mounted on the upper surface of the base; a gripper is slidably connected to the upper surface of the sliding member; the driving mechanism is connected to the gripper and can drive the gripper to slide towards the center of the cylinder to fix the connecting pipe; a support rod is fixedly mounted on the upper surface of the base; a first annular clamping plate is fixedly connected to the upper surface of the support rod; a locking assembly is slidably connected to the upper surface of the first annular clamping plate; the driving mechanism is connected to the locking assembly and can drive the locking assembly to slide up and down relative to the first annular clamping plate to lock the flange.

[0007] Preferably, the drive mechanism includes a gear, a rack, a first turntable, and a sliding shaft;

[0008] The outer side of the gear meshes with the rack, the center of the upper surface of the gear is connected to the center of the lower surface of the first turntable, and the center of the lower surface of the gear is rotatably connected to the upper surface of the base.

[0009] The rack is placed horizontally, and its end is connected to the output end of the cylinder assembly;

[0010] The upper surface of the first turntable has a through arc-shaped opening that gradually approaches the center of the first turntable at a position off-center;

[0011] The sliding shaft is divided into upper and lower ends. The diameter of the upper end is greater than the diameter of the through arc-shaped opening and its lower end surface is in contact with the upper surface of the first turntable. The diameter of the lower end is equal to the diameter of the through arc-shaped opening and is located in the through arc-shaped opening and connected to the gripper.

[0012] Preferably, the end of the gripper is located at the end of the through arc-shaped opening away from the center of the first turntable, and the lower end of the sliding shaft is fixed to the end of the gripper.

[0013] Preferably, the drive mechanism further includes a transmission assembly, which includes a connecting rod, a second turntable, a lifting assembly, and a second hinge rod;

[0014] One end of the connecting rod is fixed to the side end of the rack, and the other end is hinged to the end of the rack.

[0015] The other end is fixedly connected to the second turntable at an off-center point;

[0016] The center of the second turntable is rotatably connected to the base, and a lifting assembly is fixedly connected to the other side of the second turntable.

[0017] The end of the second hinge rod is hinged to the lifting assembly.

[0018] Preferably, the lifting assembly includes a fixing component and a lifting component. One end of the fixing component is fixedly connected to the second turntable, and the other end is connected to the lifting component. The upper surface of the fixing component is provided with a sliding groove for the lifting component to slide up and down.

[0019] The lifting component has several evenly distributed first through holes, and the end of the sliding groove of the fixing component has the same second through hole. The first through holes can overlap with the second through holes, and bolts are provided at the overlap to fix the lifting component.

[0020] Preferably, the cylinder assembly includes a cylinder and a base;

[0021] The cylinder is fixed to the upper surface of the base, and the base is fixed to the side of the base, with its output end passing through the cylinder and connected to the rack.

[0022] Preferably, the locking assembly includes a second annular clamp and a sliding pin;

[0023] The second annular clamp is located above the first annular clamp and its diameter is equal to that of the first annular clamp;

[0024] One end of the sliding column is fixed to the side wall of the second annular clamp, and the other end passes through the first annular clamp and is connected to the second hinge rod.

[0025] This utility model has the following beneficial effects:

[0026] 1. The ventilation duct connector flange welding device, through the linkage design of rack and pinion transmission and transmission components, can achieve two effects simultaneously with a single linear input of the cylinder. One is that the gear drives the gripper to radially retract and clamp the pipe, and the connecting rod drives the lifting component to press the second ring clamping plate downward to tighten the flange, which greatly shortens the clamping time and improves work efficiency.

[0027] 2. The ventilation duct connector flange welding device can flexibly adjust the initial height of the second ring clamp by adjusting the corresponding positions of the first and second through holes of the fixing and lifting parts, ensuring that the flange is placed in the accommodating space and the clamping stroke between the first and second ring clamps to match the requirements of different workpieces. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the appearance and structure of this utility model;

[0029] Figure 2 This is a schematic diagram of the structure of this utility model;

[0030] Figure 3 This is a schematic diagram of the drive mechanism of this utility model;

[0031] Figure 4 This is a schematic diagram of the transmission component of this utility model.

[0032] In the diagram: 1. Base; 2. Cylinder; 3. Cylinder assembly; 31. Cylinder; 32. Base; 4. Drive mechanism; 41. Gear; 42. Rack; 43. First turntable; 44. Sliding shaft; 45. Transmission assembly; 451. Connecting rod; 452. First hinge rod; 453. Second turntable; 454. Lifting assembly; 4541. Fixing component; 4542. Lifting component; 455. Second hinge rod; 5. Sliding component; 6. Gripper; 7. Support rod; 8. First circular clamping plate; 9. Locking assembly; 91. Second circular clamping plate; 92. Sliding column. Detailed Implementation

[0033] 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.

[0034] Please see Figures 1-2 A flange welding device for ventilation duct connectors includes a base 1, a cylinder 2 for accommodating a connecting pipe mounted on the upper surface of the base 1, and a cylinder assembly 3 on the outer side of the cylinder 2. The device is characterized in that: the output end of the cylinder assembly 3 is located inside the cylinder 2 and connected to a drive mechanism 4; a sliding member 5 is fixedly mounted on the upper surface of the base 1; a gripper 6 is slidably connected to the upper surface of the sliding member 5; the sliding member 5 faces the center of the cylinder 2, restricting the movement direction of the gripper 6; and the drive mechanism 4 is connected to the gripper 6 and can drive the gripper 6 to slide towards the center of the cylinder 2 to fix the connecting pipe. A support rod 7 is fixedly installed on the upper surface of the base 1. A first circular clamping plate 8 is fixedly connected to the upper surface of the support rod 7. A locking component 9 is slidably connected to the upper surface of the first circular clamping plate 8. The driving mechanism 4 is connected to the locking component 9 and can drive the locking component 9 to slide up and down relative to the first circular clamping plate 8 to lock the flange. The cylinder assembly 3 drives the driving mechanism 4 to move the gripper 6 on the sliding member 5 toward the first turntable 43, thereby fixing the connecting pipe. While the connecting pipe is fixed, the driving mechanism 4 drives the locking component to move toward the first circular clamping plate 8 and fix the flange.

[0035] Please see Figure 3The driving mechanism 4 includes a gear 41, a rack 42, a first turntable 43, and a sliding shaft 44. The outer side of the gear 41 meshes with the rack 42. The center of the upper surface of the gear 41 is connected to the center of the lower surface of the first turntable 43, and the center of its lower surface is rotatably connected to the upper surface of the base 1. The rack 42 is placed horizontally, and its end is connected to the output end of the cylinder assembly 3. The upper surface of the first turntable 43 has a through arc-shaped opening that gradually approaches the center from the center. The sliding shaft 44 is divided into upper and lower ends. The diameter of the upper end is larger than the diameter of the through arc-shaped opening, and its lower end is in contact with the upper surface of the first turntable 43. The diameter of the lower end is equal to the diameter of the through arc-shaped opening. It is located in the through arc-shaped opening and connected to the gripper 6. The end of the gripper 6 is placed at the end of the through arc-shaped opening away from the center. The lower end of the sliding shaft 44 is fixed to the end of the gripper 6. In normal condition, the ends of the sliding shaft 44 and the gripper 6 connected to it are both at the end of the through arc-shaped opening away from the center of the first turntable 43. When the cylinder assembly 3 drives the rack 42 to move in the direction of the cylinder assembly 3, the gear 41 meshing with it will drive the first turntable 43 to rotate clockwise. At this time, the sliding shaft 44 will gradually move along the through arc-shaped opening to the end of the through arc-shaped opening close to the center of the first turntable 43. During the movement, the gripper 6 in the sliding member 5 gradually slides towards the center of the first turntable 43.

[0036] Please see Figure 4 The drive mechanism 4 further includes a transmission assembly 45, which includes a connecting rod 451, a first hinge rod 452, a second turntable 453, a lifting assembly 454, and a second hinge rod 455. One end of the connecting rod 451 is fixed to the side end of the rack 42, and the other end is hinged to the end of the first hinge rod 452. The other end of the first hinge rod 452 is fixedly connected to the off-center part of the second turntable 453. The center of the second turntable 453 is rotatably connected to the base 1. The lifting assembly 454 is fixedly connected to the other side of the second turntable 453 opposite to the first hinge rod 452. The second hinge rod 455... The end is hinged to the lifting assembly 454. When the rack 42 moves, the connecting rod 451 and the rack 42 move in the same direction and distance. The first hinge rod 452, which is hinged to the connecting rod 451, will drive the second turntable 453 to rotate counterclockwise and drive the lifting assembly 454 to move downward. When the lifting assembly 454 moves downward, it will pull the second hinge rod 455, which is hinged to it, downward. The second hinge rod 455 is fixedly connected to the slide column 92 and will synchronously pull the slide column 92 downward. The first circular clamping plate 8 is fixed on the upper surface of the base 1. At this time, the slide column 92 drives the second circular clamping plate 91 to gradually approach the first circular clamping plate 8 and lock the flange.

[0037] The lifting assembly 454 includes a fixing member 4541 and a lifting member 4542. One end of the fixing member 4541 is fixedly connected to the second turntable 453, and the other end is connected to the lifting member 4542. The upper surface of the fixing member 4541 is provided with a sliding groove for the lifting member 4542 to slide up and down. The lifting member 4542 is provided with a plurality of evenly distributed first through holes, and the end of the sliding groove of the fixing member 4541 is provided with the same second through hole. The first through holes can overlap with the second through holes, and bolts are provided at the overlap to fix the lifting member 4542. The corresponding positions of the first through holes and the second through holes can be adjusted and fixed according to the thickness of the flange, thereby adjusting the distance between the first ring clamp 8 and the second ring clamp 91.

[0038] Please see Figures 2 to 4 The cylinder assembly 3 includes a cylinder 31 and a base 32. The cylinder 31 is fixed on the upper surface of the base 1, and the base 32 is fixed on the side of the base 1, with its output end passing through the cylinder 2 and connected to the rack 42.

[0039] The locking assembly 9 includes a second annular clamping plate 91 and a sliding pin 92. The second annular clamping plate 91 is located above the first annular clamping plate 8 and its diameter is equal to that of the first annular clamping plate 8. One end of the sliding pin 92 is fixed to the side wall of the second annular clamping plate 91, and the other end passes through the first annular clamping plate 8 and is connected to the second hinge rod 455.

[0040] In summary, when using this ventilation duct connector flange welding device, first adjust the corresponding positions of the first and second through holes on the fixing member 4541 and the lifting member 4542 according to the flange thickness to ensure that the flange can be smoothly placed between the first annular clamp 8 and the second annular clamp 91. After adjustment, place the connecting pipe on the upper surface of the first turntable 43. At this time, start the cylinder 31. The cylinder 31 drives the rack 42 to move in the direction of the cylinder 31, and drives the gear 41 that meshes with it. The first turntable 43 rotates clockwise, and the sliding shaft 44 moves along the through arc-shaped opening. During the movement, the gripper 6 in the sliding member 5 gradually moves towards the outer wall of the pipe and clamps and fixes it. While the gripper 6 gradually clamps and fixes the pipe, the connecting rod 451 and the rack 42 move in the same direction and distance. The connecting rod 451 drives the second turntable 453 to rotate counterclockwise and causes the lifting assembly 454 to move downward. When the lifting assembly 454 moves downward, it will pull down the second hinge rod 455 that is hinged to it. The second hinge rod 455 is fixedly connected to the sliding column 92 and will synchronously pull the sliding column 92 downward. The first circular clamping plate 8 is fixed on the upper surface of the base 1. At this time, the sliding column 92 drives the second circular clamping plate 91 to gradually approach the first circular clamping plate 8 and lock the flange. At this time, the fixing and locking of the pipe and the flange are completed simultaneously, and welding work can be carried out.

[0041] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. Moreover, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] 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. A flange welding device for ventilation duct connectors, comprising a base (1), wherein a cylinder (2) for accommodating a connecting pipe is mounted on the upper surface of the base (1), and a cylinder assembly (3) is provided on the outer side of the cylinder (2), characterized in that: The output end of the cylinder assembly (3) is located inside the cylinder (2) and connected to the drive mechanism (4). A sliding member (5) is fixedly installed on the upper surface of the base (1). A gripper (6) is slidably connected to the upper surface of the sliding member (5). The drive mechanism (4) is connected to the gripper (6) and can drive the gripper (6) to slide towards the center of the cylinder (2) to fix the connecting pipe. A support rod (7) is fixedly installed on the upper surface of the base (1). A first circular clamping plate (8) is fixedly connected to the upper surface of the support rod (7). A locking assembly (9) is slidably connected to the upper surface of the first circular clamping plate (8). The drive mechanism (4) is connected to the locking assembly (9) and can drive the locking assembly (9) to slide up and down relative to the first circular clamping plate (8) to lock the flange.

2. The ventilation duct connector flange welding device according to claim 1, characterized in that: The drive mechanism (4) includes a gear (41), a rack (42), a first turntable (43), and a sliding shaft (44). The outer side of the gear (41) meshes with the rack (42), the center of the upper surface of the gear (41) is connected to the center of the lower surface of the first turntable (43), and the center of the lower surface is rotatably connected to the upper surface of the base (1). The rack (42) is placed horizontally, and its end is connected to the output end of the cylinder assembly (3); The upper surface of the first turntable (43) is provided with a through arc-shaped opening that gradually approaches the center of the first turntable (43) at a position off from the center; The sliding shaft (44) is divided into upper and lower ends. The diameter of the upper end is greater than the diameter of the through arc opening and its lower end surface is in contact with the upper surface of the first turntable (43). The diameter of the lower end is equal to the diameter of the through arc opening and is located in the through arc opening and connected to the gripper (6).

3. The ventilation duct connector flange welding device according to claim 2, characterized in that: The end of the gripper (6) is placed at the end of the arc-shaped opening away from the center of the first turntable (43), and the lower end of the sliding shaft (44) is fixed to the end of the gripper (6).

4. The flange welding device for ventilation duct connectors according to claim 3, characterized in that: The drive mechanism (4) also includes a transmission assembly (45), which includes a connecting rod (451), a first hinge rod (452), a second turntable (453), a lifting assembly (454), and a second hinge rod (455). One end of the connecting rod (451) is fixed to the side end of the rack (42), and the other end is hinged to the end of the first hinge rod (452). The other end of the first hinge rod (452) is fixedly connected to the second turntable (453) at an off-center position; The center of the second turntable (453) is rotatably connected to the base (1), and the other side of the second turntable (453) is fixedly connected to the first hinge rod (452). The end of the second hinge rod (455) is hinged to the lifting assembly (454).

5. The flange welding device for ventilation duct connectors according to claim 4, characterized in that: The lifting assembly (454) includes a fixing member (4541) and a lifting member (4542). One end of the fixing member (4541) is fixedly connected to the second turntable (453), and the other end is connected to the lifting member (4542). The upper surface of the fixing member (4541) is provided with a sliding groove for the lifting member (4542) to slide up and down. The lifting component (4542) has several evenly distributed first through holes, and the end of the sliding groove of the fixing component (4541) has the same second through hole. The first through holes can overlap with the second through holes, and bolts are provided at the overlap to fix the lifting component (4542).

6. The flange welding device for ventilation duct connectors according to claim 5, characterized in that: The cylinder assembly (3) includes a cylinder (31) and a base (32); The cylinder (31) is fixed on the upper surface of the base (1), and the base (32) is fixed on the side of the base (1) and its output end passes through the cylinder (2) and is connected to the rack (42).

7. The ventilation duct connector flange welding device according to claim 6, characterized in that: The locking assembly (9) includes a second annular clamp (91) and a slide (92); The second annular clamp (91) is located above the first annular clamp (8) and its diameter is equal to the diameter of the first annular clamp (8); One end of the sliding column (92) is fixed to the side wall of the second ring clamp (91), and the other end passes through the first ring clamp (8) and is connected to the second hinge rod (455).

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