A multi-angle positioning mechanism for duct welding

Abstract

This utility model relates to a multi-angle positioning mechanism for duct welding, including a support base, two positioners, and an angle adjustment assembly. Each of the two positioners includes an annular shell, inside which an annular ring is rotatably mounted. Three arc-shaped grooves are formed on the annular ring, and sliding rods are slidably mounted within each of the three grooves. Each of the three sliding rods has a movable rod on its surface, and one end of each movable rod penetrates the inner wall of the annular shell and is connected to a positioning plate. This multi-angle positioning mechanism for duct welding, through the cooperation of the annular ring, arc-shaped grooves, sliding rods, and movable rods, can flexibly adjust the position of the positioning plate, adapting to ducts of different diameters. It eliminates the need to replace the positioning device, reducing equipment costs and ensuring the continuity of welding operations. The locking assembly, with its pull rod, spring, pull plate, and screw engaging with the screw hole, can firmly fix the adjusted positioning structure, preventing duct shaking from affecting welding.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary devices for duct welding, specifically a multi-angle positioning mechanism for duct welding. Background Technology

[0002] As the core channel for gas transportation, the connection quality of air ducts directly affects the operating efficiency and safety of the entire system. Welding is a key process to ensure sealing and structural strength during air duct connection. To ensure accurate alignment during air duct welding and avoid welding defects caused by misalignment, shaking, etc., a positioning mechanism is needed to stably fix the air duct.

[0003] Current duct welding positioning mechanisms on the market have significant limitations: on the one hand, most positioning mechanisms are difficult to adapt to ducts of different diameters, and when faced with diverse construction needs, different positioning devices often need to be replaced, which not only increases equipment costs but also seriously affects the continuity of welding operations; on the other hand, most cannot achieve automatic and flexible changes in the welding angle of ducts, which adds complexity to the use. Therefore, a multi-angle positioning mechanism for duct welding is proposed to solve the above problems. Utility Model Content

[0004] To achieve the above objectives, this utility model provides the following technical solution: a multi-angle positioning mechanism for duct welding, comprising a support base, two positioners, and an angle adjustment assembly; each of the two positioners includes an annular shell, with an annular ring rotatably mounted inside the annular shell, and three arc-shaped grooves formed on the annular ring, with sliding rods slidably mounted in each of the three arc-shaped grooves, and movable rods provided on the surfaces of the three sliding rods, one end of each movable rod penetrating the inner wall of the annular shell and connected to a positioning piece; the angle adjustment assembly includes a motor, with the motor located on the right side of the support base, and a rotating rod fixedly mounted on the output shaft of the motor, with two gears fixedly mounted on the surface of the rotating rod, and gear rings meshing with the two gears fixedly mounted on the surfaces of the two annular shells.

[0005] Furthermore, the annular shell has three limiting channels inside that are adapted to the moving rods, and the three moving rods pass through the limiting channels and are connected to the positioning plate.

[0006] Furthermore, a locking assembly is provided on the annular shell. The locking assembly includes a through groove. A pull rod is fixedly installed on the annular ring. A spring is provided between the pull rod and the inner wall of the through groove. One end of the pull rod passes through the through groove and is connected to a pull plate.

[0007] Furthermore, a screw is provided on the pull plate, and a set of screw holes adapted to the screw are opened on the surface of the annular shell.

[0008] Furthermore, it also includes auxiliary components. The top of the support base is provided with two sets of auxiliary components, each set of auxiliary components including six support rollers, and two auxiliary grooves are opened on the side walls of the two annular shells.

[0009] Furthermore, all six rollers are slidably installed in their respective auxiliary slots.

[0010] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0011] 1. The multi-angle positioning mechanism for duct welding, through the cooperation of annular ring, arc-shaped sliding groove, sliding rod and moving rod, can drive the positioning plate to flexibly adjust the position, which can be adapted to ducts of different diameters and specifications. There is no need to replace the positioning device, which reduces equipment costs and ensures the continuity of welding operations. The locking component's pull rod, spring, pull plate and screw and screw hole cooperate to firmly fix the adjusted positioning structure and prevent the duct from shaking and affecting the welding.

[0012] 2. The multi-angle positioning mechanism for duct welding includes a motor, rotating rod, gear, and gear ring in the angle adjustment component. This mechanism can drive the positioner to flexibly adjust the welding angle of the duct, reducing operational complexity. The auxiliary component's support roller and auxiliary groove work together to provide stable support and guidance for the positioner's rotation, ensuring precise alignment of the weld joint during angle adjustment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a three-dimensional structural diagram of the support base of this utility model;

[0015] Figure 3 This is a three-dimensional structural diagram of the positioner of this utility model;

[0016] Figure 4 This is a cross-sectional view of the annular shell of this utility model.

[0017] In the diagram: 1. Support base; 2. Positioner; 21. Annular shell; 22. Annular ring; 23. Arc-shaped slide groove; 24. Slide rod; 25. Moving rod; 26. Positioning piece; 201. Through groove; 202. Pull rod; 203. Spring; 204. Pull plate; 205. Screw; 206. Screw hole; 3. Angle adjustment assembly; 31. Motor; 32. Rotating rod; 33. Gear; 34. Gear ring; 4. Auxiliary assembly; 41. Support roller; 42. Auxiliary groove. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1-4 This embodiment of a multi-angle positioning mechanism for duct welding includes a support base 1, two positioners 2, and an angle adjustment assembly 3. Each of the two positioners 2 includes an annular shell 21, with an annular ring 22 rotatably mounted inside the annular shell 21. The annular ring 22 has three arc-shaped grooves 23, and each of the three arc-shaped grooves 23 has a sliding rod 24 slidably mounted inside it. Each of the three sliding rods 24 has a moving rod 25 on its surface, and one end of each moving rod 25 passes through the inner wall of the annular shell 21 and is connected to a positioning piece 26. The angle adjustment assembly 3 includes a motor 31, which is located on the right side of the support base 1. The output shaft of the motor 31 is fixedly mounted with a rotating rod 32, and two gears 33 are fixedly mounted on the surface of the rotating rod 32. Each of the two annular shells 21 has a gear ring 34 that meshes with the two gears 33.

[0020] The annular ring 22 can rotate inside the annular shell 21. Three evenly spaced arc-shaped grooves 23 on its surface are the core structure for achieving three-way synchronous adjustment. The trajectory of the arc-shaped grooves 23 is designed as an inwardly inclined arc with the center of the annular ring 22 as its center. When the annular ring 22 rotates, the three arc-shaped grooves 23 synchronously push the corresponding sliding rods 24, causing the sliding rods 24 to slide along the arc-shaped trajectory. This, in turn, drives the moving rod 25 closer to or further away from the same center. The limiting channel on the annular shell 21, adapted to the moving rod 25, plays a crucial guiding role. When the moving rod 25 moves, the limiting channel restricts it to approach or move away from the center of the duct in the radial direction. The slide rod 24 is slidably installed in the arc-shaped slide groove 23, which converts the rotational motion of the ring 22 into the linear motion of the moving rod 25. The rotational thrust of the arc-shaped slide groove 23 is transmitted to the moving rod 25 through the slide rod 24, and then the moving rod 25 drives the positioning plate 26 to clamp or release the duct. When the three positioning plates 26 approach the duct synchronously under the drive of the moving rod 25, they will form a stable clamp on the duct from three directions.

[0021] The locking assembly is installed on the annular shell 21 and includes a slot 201, a pull rod 202, a spring 203, a pull plate 204, a screw 205, and a screw hole 206. It is used to fix the annular ring 22 after the positioning piece 26 is adjusted to the appropriate position, preventing it from rotating due to external force and causing positioning failure. During adjustment, the pull plate 204 is pulled, the spring 203 is compressed, and the pull rod 202 drives the annular ring 22 to rotate. At this time, the position of the positioning piece 26 can be easily adjusted. After the pull plate 204 is released, the rebound force of the spring 203 causes the pull rod 202 to return to its original position, achieving initial pre-fixing. When the position of the positioning piece 26 is determined, the screw 205 is screwed into the corresponding screw hole 206. The annular ring 22 can be fixed by the rigid connection between the pull plate 204 and the annular shell 21, avoiding the rotation of the annular ring 22 caused by welding vibration.

[0022] Angle adjustment component 3 is installed on support base 1 to drive two positioners 2 to rotate synchronously, thereby adjusting the welding angle of the air duct. The output shaft of motor 31 is connected to rotating rod 32, which can drive rotating rod 32 to rotate by forward and reverse rotation. Rotating rod 32 serves as a power transmission shaft, synchronously transmitting the power of motor 31 to two gears 33 to ensure the driving consistency of the two positioners 2. Two gears 33 are fixed on the surface of rotating rod 32. Gear rings 34 that mesh with gears 33 are fixed on the surface of the annular shell 21 of both positioners 2. Gear rings 34 are concentric with annular shell 21. When motor 31 drives rotating rod 32 to rotate, gears 33 rotate synchronously. Through the meshing transmission of gears 33 and gear rings 34, the rotational motion of rotating rod 32 is converted into the rotational motion of annular shell 21. The two positioners 2 will rotate at the same speed and in the same direction, thereby driving the welding joints of the two air ducts to rotate synchronously, realizing flexible adjustment of the welding angle.

[0023] The auxiliary component 4 provides auxiliary support and guidance when the positioner 2 rotates, ensuring the stability of angle adjustment. Each set of auxiliary components 4 includes six rollers 41, which are evenly distributed around the bottom circumference of the positioner 2. Two auxiliary grooves 42 are opened on both side walls of the two annular shells 21. The auxiliary grooves 42 are annular and concentric with the annular shells 21. The rollers 41 are slidably installed in the auxiliary grooves 42. When the positioner 2 rotates under the drive of the angle adjustment component 3, the annular shells 21 drive the auxiliary grooves 42 to rotate synchronously. The rollers 41 roll in the auxiliary grooves 42. On the one hand, the rollers 41 support the annular shells 21 to prevent them from sinking or shifting due to their own weight or the weight of the duct. On the other hand, the trajectory constraint of the auxiliary grooves 42 ensures that the positioner 2 always rotates around its own center, avoiding misalignment of the weld during angle adjustment.

[0024] During implementation, the welded ductwork is placed into two positioners 2 to align the welded joints. Pulling the pull plate 204 and pull rod 202 rotates the annular ring 22, which in turn rotates the three arc-shaped sliding grooves 23. The sliding of the three sliding rods 24 within the arc-shaped sliding grooves 23 causes the three moving rods 25 to move within the limiting grooves, adjusting the three positioning pieces 26 to the appropriate duct size. The three positioning pieces 26 are then fixed to the duct surface. Next, the screw 205 is screwed into the corresponding screw hole 206 to enhance the duct's fixation. Then, the angle adjustment assembly 3 is activated. The motor 31 drives the rotating rod 32 to rotate, which in turn drives the two gears 33 to rotate. The meshing of the gears 33 and the gear ring 34 rotates the two positioners 2, thereby adjusting the duct's angle. As the two positioners 2 rotate, the auxiliary grooves 42 on their surfaces rotate on the support rollers 41, providing stable guidance for the rotation of the positioners 2.

[0025] In summary, the multi-angle positioning mechanism for duct welding, through the cooperation of the annular ring 22, the arc-shaped sliding groove 23, the sliding rod 24, and the moving rod 25, can drive the positioning plate 26 to flexibly adjust its position, adapting to ducts of different diameters. It eliminates the need to replace the positioning device, reducing equipment costs and ensuring the continuity of welding operations. The locking component, with its pull rod 202, spring 203, pull plate 204, and screw 205 cooperating with the screw hole 206, can firmly fix the adjusted positioning structure, preventing duct shaking from affecting welding.

[0026] Furthermore, the motor 31, rotating rod 32, gear 33 and gear ring 34 in the angle adjustment component 3 cooperate to drive the positioner 2 to flexibly adjust the welding angle of the air duct, reducing the complexity of operation; the support roller 41 and auxiliary groove 42 of the auxiliary component 4 cooperate to provide stable support and guidance for the rotation of the positioner 2, ensuring accurate connection of the welding joint when adjusting the angle.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0028] 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 multi-angle positioning mechanism for duct welding, characterized in that: The system includes a support base (1), two positioners (2), and an angle adjustment assembly (3). Each of the two positioners (2) includes an annular shell (21), and an annular ring (22) is rotatably mounted inside the annular shell (21). The annular ring (22) has three arc-shaped grooves (23), and a sliding rod (24) is slidably mounted in each of the three arc-shaped grooves (23). Each of the three sliding rods (24) has a moving rod (25) on its surface, and one end of each moving rod (25) passes through the inner wall of the annular shell (21) and is connected to a positioning piece (26). The angle adjustment assembly (3) includes a motor (31), and the motor (31) is located on the right side of the support base (1). A rotating rod (32) is fixedly mounted on the output shaft of the motor (31), and two gears (33) are fixedly mounted on the surface of the rotating rod (32). A gear ring (34) that meshes with the two gears (33) is fixedly mounted on the surface of each of the two annular shells (21).

2. The multi-angle positioning mechanism for duct welding according to claim 1, characterized in that: The annular shell (21) has three limiting channels inside that are adapted to the moving rods (25). All three moving rods (25) pass through the limiting channels and are connected to the positioning piece (26).

3. The multi-angle positioning mechanism for duct welding according to claim 1, characterized in that: A locking assembly is provided on the annular shell (21). The locking assembly includes a through groove (201). A pull rod (202) is fixedly installed on the annular ring (22). A spring (203) is provided between the pull rod (202) and the inner wall of the through groove (201). One end of the pull rod (202) passes through the through groove (201) and is connected to a pull plate (204).

4. The multi-angle positioning mechanism for duct welding according to claim 3, characterized in that: The pull plate (204) is provided with a screw (205), and the surface of the annular shell (21) is provided with a set of screw holes (206) that are adapted to the screw (205).

5. The multi-angle positioning mechanism for duct welding according to claim 1, characterized in that: It also includes auxiliary components (4), and the top of the support base (1) is provided with two sets of auxiliary components (4). Each set of auxiliary components (4) includes six rollers (41), and two auxiliary grooves (42) are opened on the two side walls of the two annular shells (21).

6. The multi-angle positioning mechanism for duct welding according to claim 5, characterized in that: All six rollers (41) are slidably installed in the corresponding two auxiliary slots (42).

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