A plate welding clamping auxiliary device

Abstract

This utility model relates to the field of welding auxiliary equipment technology, and in particular to a clamping auxiliary device for plate welding, used for clamping cylindrical plates. The auxiliary device includes a support frame with at least three adjusting arms evenly distributed at angles. Each adjusting arm can extend or retract and expands radially along the support frame. The end of each adjusting arm furthest from the center of the support frame is a telescopic end, and a clamp is installed at the telescopic end. The distance between the clamps and the center of the support frame is always equal. This structure reduces the difficulty of manual clamping operations and the problem of misalignment at the joint, improves welding accuracy, reduces labor intensity, and is suitable for clamping arc-shaped cylinders of different sizes and specifications.

Description

Technical Field

[0001] This utility model relates to the field of welding auxiliary equipment technology, and in particular to a plate welding clamping auxiliary device. Background Technology

[0002] In the manufacturing of metal structural components, forming cylindrical structures from sheet metal is a common process, widely used in ventilation ducts, liquid storage containers, and other fields. In conventional processes, workers typically process sheet metal into curved structures using plate rolling machines or other rolling equipment, and then perform cylindrical butt joints and welding to form the final shape.

[0003] Because metal sheets possess inherent elasticity and resilience, even after being rolled into a preliminary arc shape, the openings at both ends of the cylinder still have a large gap, making it difficult to close naturally. In this case, external force is needed to compress the sheet material, bringing the two ends together to achieve butt welding. However, in existing technologies, for smaller, thinner cylinder structures, workers can often temporarily fix them by applying pressure with their legs or hands, and then operate the welding machine with one hand. But when the cylinder is larger, due to the increased rigidity of the sheet material, it is difficult for a single person to apply pressure to achieve butt welding; usually, multiple workers need to work together, with one or more applying pressure while another operates the welding tools. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies where the cylinder size is too large and it is difficult for a single person to apply pressure to achieve docking, and to propose an auxiliary device for clamping plate welding.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A plate welding clamping auxiliary device is used for clamping tooling for plate welding cylinders. The auxiliary device includes a support frame with at least three adjusting arms distributed at equal angles. The adjusting arms can be extended or shortened and can extend and retract radially along the support frame. The end of each adjusting arm away from the center of the support frame is a telescopic end, and a clamp is installed at the telescopic end. The distance between the multiple clamps and the center of the support frame is always equal.

[0007] The adjusting arm includes a guide cylinder and a telescopic cylinder. The guide cylinder is fixedly connected to the support frame, and the telescopic cylinder is slidably connected to the guide cylinder and the two are slidably arranged along the radial direction of the support frame. The clamp is fixed to one end of the telescopic cylinder away from the center of the support frame. A synchronous motion mechanism is installed between the other end of the telescopic cylinder and the support frame. The synchronous motion mechanism enables multiple telescopic cylinders to slide synchronously.

[0008] The synchronous motion mechanism includes a threaded rod corresponding to the number of telescopic cylinders. The axis of the threaded rod is arranged radially along the support frame. The threaded rod is threadedly connected to the telescopic cylinder. The threaded rod is rotatably connected to the guide cylinder or the support frame. The end of the threaded rod is drivenly connected to the support frame through a gear assembly.

[0009] The end of the threaded rod is fixedly connected to a second bevel gear, and the center of the support frame is rotatably connected to a shaft. The shaft is fixedly connected to a first bevel gear that meshes with multiple second bevel gears simultaneously.

[0010] A handwheel is installed at the end of the rotating shaft; or a rotary motor is fixedly connected to the support frame, and the power output shaft of the rotary motor is connected to the rotating shaft in a transmission connection.

[0011] The telescopic cylinder has an internal thread structure, and the threaded rod is threadedly connected to the internal thread structure.

[0012] The clamp includes a base and a movable clamping plate slidably connected to the base. The base is fixedly connected to or detachably assembled with the telescopic cylinder. There is a clamping space between the movable clamping plate and the base. The movable clamping plate is threadedly connected to an adjusting bolt, which is rotatably connected to the base.

[0013] The base is fixedly connected to a sleeve, the sleeve is threadedly connected to a locking bolt, the sleeve is sleeved with the telescopic cylinder, and the two are locked together by the locking bolt.

[0014] The movable clamp is through which a support guide rod is inserted. The support guide rod is fixedly connected to the base and is located above the adjusting bolt.

[0015] The present invention proposes a plate welding clamping auxiliary device, which has the following advantages: the structure can reduce the difficulty of manual clamping operation and the problem of easy misalignment of the docking position, improve the welding docking accuracy, reduce labor intensity, and is suitable for clamping requirements of arc-shaped cylinders of different sizes and specifications. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a top view of the structure of the present invention when clamping a cylinder;

[0018] Figure 3 This is a cross-sectional view of the adjusting arm of this utility model.

[0019] In the diagram: 1. Support frame; 2. Adjusting arm; 3. First bevel gear; 4. Rotating shaft; 5. Second bevel gear; 6. Threaded rod; 7. Guide cylinder; 8. Telescopic cylinder; 9. Clamp; 10. Base; 11. Movable clamp; 12. Adjusting bolt; 13. Sleeve; 14. Locking bolt; 15. Internal thread structure; 16. Support guide rod. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figures 1-3 A plate welding clamping auxiliary device is used for clamping tooling for plate welding cylinders. The auxiliary device includes a support frame 1, and at least three adjusting arms 2 are distributed at equal angles on the support frame 1. The adjusting arms 2 can be extended or shortened and can extend and retract radially along the support frame 1. The end of each adjusting arm 2 away from the center of the support frame 1 is a telescopic end, and a clamp 9 is installed on the telescopic end. The distance between the multiple clamps 9 and the center of the support frame 1 is always equal.

[0022] This plate welding clamping auxiliary device is used to clamp the rolled arc-shaped cylinder and assist in the welding operation. The support frame 1 is a circular structure with at least three adjusting arms 2 evenly distributed on it. The adjusting arms 2 can extend or shorten in the radial direction of the support frame 1, thereby moving the chuck 9 at the end of the adjusting arm 2 away from the center of the support frame 1 closer to or further away from the center of the support frame 1, to accommodate cylinder structures of different diameters. The chuck 9 is used to clamp the edge of the arc-shaped cylinder, and the distance between the multiple chucks 9 and the center of the support frame 1 is always consistent, that is, they are always distributed on the circumference of the same circle.

[0023] In practice, two sets are generally required. The two sets of devices are placed at both ends of the rolled-up but not yet closed cylinder, so that the chucks 9 clamp the edge of the cylinder from the outside. Since the chucks 9 are evenly distributed, clamping force can be applied in multiple directions at the same time, thereby forcing the resilient curved cylinder to close and form a closed cylinder state, which facilitates subsequent butt welding.

[0024] This structure can reduce the difficulty of manual clamping operations and the problem of easy misalignment of the docking position, improve the welding docking accuracy, reduce labor intensity, and is suitable for clamping needs of arc-shaped cylinders of different sizes and specifications.

[0025] The adjusting arm 2 includes a guide cylinder 7 and a telescopic cylinder 8. The guide cylinder 7 is fixedly connected to the support frame 1, and the telescopic cylinder 8 is slidably connected to the guide cylinder 7 and the two are slidably arranged along the radial direction of the support frame 1. The clamp 9 is fixed to one end of the telescopic cylinder 8 away from the center of the support frame 1. A synchronous motion mechanism is installed between the other end of the telescopic cylinder 8 and the support frame 1. The synchronous motion mechanism enables multiple telescopic cylinders 8 to slide synchronously.

[0026] The adjusting arm 2 includes a guide cylinder 7 and a telescopic cylinder 8. The guide cylinder 7 is fixedly connected to the support frame 1 and provides sliding guidance for the telescopic cylinder 8. The telescopic cylinder 8 is slidably fitted inside the guide cylinder 7 and slides with the guide cylinder 7 in the radial direction of the support frame 1 to achieve overall telescopic adjustment. The clamp 9 is fixedly installed at the end of the telescopic cylinder 8 away from the center of the support frame 1. When the telescopic cylinder 8 extends outward, the clamp 9 is away from the center of the support frame 1; when the telescopic cylinder 8 retracts inward, the clamp 9 is close to the center of the support frame 1.

[0027] To achieve synchronous movement of the telescopic cylinders 8 in the multiple adjusting arms 2, a synchronous motion mechanism is provided between the telescopic cylinders 8 and the support frame 1. This synchronous motion mechanism connects each telescopic cylinder 8 through an internal transmission structure, and can drive all telescopic cylinders 8 to slide inward or outward simultaneously during operation, so that the multiple clamps 9 maintain equidistant synchronous movement, thereby ensuring the stability and symmetry of the overall clamping or releasing process of the device.

[0028] The synchronous motion mechanism includes threaded rods 6 corresponding to the number of telescopic cylinders 8. The axis of the threaded rods 6 is arranged radially along the support frame 1. The threaded rods 6 are threadedly connected to the telescopic cylinders 8. The threaded rods 6 are rotatably connected to the guide cylinders 7 or the support frame 1. The end of the threaded rods 6 is connected to the support frame 1 through a gear assembly.

[0029] The synchronous motion mechanism includes threaded rods 6 corresponding to the number of telescopic cylinders 8, with the axis of the threaded rods 6 arranged radially along the support frame 1. One end of each threaded rod 6 is threadedly connected to a telescopic cylinder 8, and the other end is rotatably connected to a guide cylinder 7 or the support frame 1. With this structure, when the threaded rod 6 rotates, due to the threaded engagement with the telescopic cylinder 8, it drives the telescopic cylinder 8 to slide radially, thereby driving the chuck 9 mounted at its end to move closer to or further away from the center of the support frame 1, achieving clamping or releasing operations.

[0030] A second bevel gear 5 is fixedly connected to the end of the threaded rod 6. A rotating shaft 4 is rotatably connected to the center of the support frame 1. A first bevel gear 3, which meshes with multiple second bevel gears 5 simultaneously, is fixedly connected to the rotating shaft 4. A handwheel is installed at the end of the rotating shaft 4; or a rotary motor is fixedly connected to the support frame 1, and the power output shaft of the rotary motor is connected to the rotating shaft 4 for transmission.

[0031] Each threaded rod 6 has a second bevel gear 5 fixedly connected to its end, and all second bevel gears 5 are arranged facing the center of the support frame 1. A rotating shaft 4 is rotatably connected to the center of the support frame 1, and a first bevel gear 3 is fixedly connected to the rotating shaft 4. The first bevel gear 3 meshes with multiple second bevel gears 5 simultaneously. Through the meshing transmission between the first bevel gear 3 and the second bevel gears 5, the rotational motion of the rotating shaft 4 can be synchronously transmitted to multiple threaded rods 6, realizing the simultaneous rotation of all threaded rods 6.

[0032] A handwheel is installed at the end of the rotating shaft 4. The operator can manually turn the handwheel to drive the rotating shaft 4 to rotate, so that all the threaded rods 6 rotate synchronously, thereby driving the telescopic cylinder 8 to slide radially, realizing the synchronous clamping or releasing operation of multiple chucks 9. As another driving method, a rotary motor can also be installed on the support frame 1, and the power output shaft of the rotary motor is connected to the rotating shaft 4 to provide automated driving force to complete the synchronous clamping action.

[0033] The telescopic cylinder 8 has an internal thread structure 15, and the threaded rod 6 is threadedly connected to the internal thread structure 15. The internal thread structure 15 can be an internal thread tapped inside the telescopic cylinder 8, or it can be a nut fixed inside the telescopic cylinder 8.

[0034] refer to Figure 3 The chuck 9 includes a base 10 and a movable clamping plate 11 that is slidably connected to the base 10. The base 10 is fixedly connected to the telescopic cylinder 8 or can be detachably assembled. There is a clamping space between the movable clamping plate 11 and the base 10. The movable clamping plate 11 is threadedly connected to an adjusting bolt 12, which is rotatably connected to the base 10.

[0035] The chuck 9 is used to clamp the edge of the curved cylinder, and specifically includes a base 10 and a movable clamping plate 11. The base 10 is fixedly connected to or detachably assembled to the front end of the telescopic cylinder 8, and is the main support of the chuck 9. The movable clamping plate 11 and the base 10 are slidably connected, forming a clamping space between them to accommodate the edge of the cylinder.

[0036] The movable clamping plate 11 is equipped with an adjusting bolt 12, which is rotatably connected to the base 10 and threadedly engaged with the movable clamping plate 11. During operation, by rotating the adjusting bolt 12, the movable clamping plate 11 can be moved forward or backward along its sliding direction, thereby changing the size of the clamping space and achieving the clamping or releasing of the cylinder edge. This structure is similar to the clamping principle of a bench vise.

[0037] The base 10 is fixedly connected to a sleeve 13, and the sleeve 13 is threadedly connected to a locking bolt 14. The sleeve 13 is sleeved with the telescopic cylinder 8, and the two are locked together by the locking bolt 14.

[0038] To enable detachable assembly between the chuck 9 and the telescopic cylinder 8, a sleeve 13 is fixedly connected to the base 10. The inner wall of the sleeve 13 and the outer wall of the telescopic cylinder 8 fit together to form a compact structure. The sleeve 13 is provided with a threaded locking bolt 14. When the locking bolt 14 is tightened, its end presses against the outer wall of the telescopic cylinder 8, thus firmly locking the chuck 9. When the locking bolt 14 is loosened, the chuck 9 can be detached from the telescopic cylinder 8.

[0039] This structure allows users to change the chuck 9 to different structural forms, such as V-shaped clamping blocks, rubber-coated pressure heads, and custom molds, according to the size or shape of the actual object being clamped, to meet the clamping requirements of different workpieces.

[0040] The movable clamping plate 11 is through which a support guide rod 16 is inserted. The support guide rod 16 is fixedly connected to the base 10 and is located above the adjusting bolt 12.

[0041] A support guide rod 16 is inserted through the movable clamping plate 11. The support guide rod 16 is fixedly connected to the base 10 and is positioned above the adjusting bolt 12. The support guide rod 16 passes through the movable clamping plate 11, allowing it to move in a set direction during sliding, avoiding skewness or jamming, thereby ensuring the smoothness and accuracy of the clamping action.

[0042] In addition, since the support guide rod 16 is located above the adjusting bolt 12 and forms a shielding and protective effect in the structure, it can isolate external contact objects when the chuck 9 is close to the edge of the arc-shaped cylinder for clamping, and prevent the edge of the arc-shaped cylinder or foreign objects from colliding with the adjusting bolt 12 during the clamping process, thereby effectively protecting the external thread of the adjusting bolt 12 from being bumped, deformed or damaged.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any technical solution, concept, or design obtained by those skilled in the art by making equivalent substitutions or changes based on the technical solution and utility model concept disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A plate welding clamping auxiliary device, used for clamping tooling for plate welding cylinders, characterized in that, The auxiliary device includes a support frame (1), which has at least three adjusting arms (2) distributed at equal angles. The adjusting arms (2) can extend or shorten and extend and retract radially along the support frame (1). The end of each adjusting arm (2) away from the center of the support frame (1) is a telescopic end, and a clamp (9) is installed on the telescopic end. The distance between the clamps (9) and the center of the support frame (1) is always equal.

2. The plate welding clamping auxiliary device according to claim 1, characterized in that, The adjusting arm (2) includes a guide cylinder (7) and a telescopic cylinder (8). The guide cylinder (7) is fixedly connected to the support frame (1). The telescopic cylinder (8) is slidably connected to the guide cylinder (7) and the two are slidably arranged along the radial direction of the support frame (1). The clamp (9) is fixed to one end of the telescopic cylinder (8) away from the center of the support frame (1). A synchronous motion mechanism is installed between the other end of the telescopic cylinder (8) and the support frame (1). The synchronous motion mechanism enables multiple telescopic cylinders (8) to slide synchronously.

3. The plate welding clamping auxiliary device according to claim 2, characterized in that, The synchronous motion mechanism includes threaded rods (6) corresponding to the number of telescopic cylinders (8). The axis of the threaded rods (6) is arranged radially along the support frame (1). The threaded rods (6) are threadedly connected to the telescopic cylinders (8). The threaded rods (6) are rotatably connected to the guide cylinder (7) or the support frame (1). The end of the threaded rods (6) is connected to the support frame (1) through a gear assembly.

4. The plate welding clamping auxiliary device according to claim 3, characterized in that, The threaded rod (6) is fixedly connected to a second bevel gear (5) at its end. The support frame (1) is rotatably connected to a rotating shaft (4) at its center position. The rotating shaft (4) is fixedly connected to a first bevel gear (3) that meshes with multiple second bevel gears (5) simultaneously.

5. The plate welding clamping auxiliary device according to claim 4, characterized in that, A handwheel is installed at the end of the rotating shaft (4); or a rotary motor is fixedly connected to the support frame (1), and the power output shaft of the rotary motor is connected to the rotating shaft (4) in a transmission connection.

6. A plate welding clamping auxiliary device according to any one of claims 3, 4, and 5, characterized in that, The telescopic cylinder (8) has an internal thread structure (15), and the threaded rod (6) is threadedly connected to the internal thread structure (15).

7. A plate welding clamping auxiliary device according to any one of claims 2, 3, 4, and 5, characterized in that, The clamp (9) includes a base (10) and a movable clamping plate (11) slidably connected to the base (10). The base (10) is fixedly connected to or detachably assembled with the telescopic cylinder (8). There is a clamping space between the movable clamping plate (11) and the base (10). The movable clamping plate (11) is threadedly connected with an adjusting bolt (12). The adjusting bolt (12) is rotatably connected to the base (10).

8. The plate welding clamping auxiliary device according to claim 7, characterized in that, The base (10) is fixedly connected to a sleeve (13), the sleeve (13) is threadedly connected to a locking bolt (14), the sleeve (13) is sleeved with the telescopic cylinder (8), and the two are locked together by the locking bolt (14).

9. The plate welding clamping auxiliary device according to claim 7, characterized in that, The movable clamp (11) is through which a support guide rod (16) is inserted. The support guide rod (16) is fixedly connected to the base (10). The support guide rod (16) is located above the adjusting bolt (12).

Images