A dual robot arc welding station

Abstract

The application discloses a double-robot arc welding station, and relates to the technical field of arc welding.The double-robot arc welding station comprises a rack and two workpiece position adjusting assemblies installed in the rack, the two workpiece position adjusting assemblies are symmetrical about the center line of the rack, one synchronous driving mechanism is installed on each side of the center line of the rack, two threaded rods are arranged between the two synchronous driving mechanisms, the two ends of each threaded rod are connected with a screw rod pair in the same horizontal position, threaded sleeves are arranged on the two threaded rods, a first robot is connected below the threaded sleeve close to the top of the side mounting frame, a second robot is connected above the threaded sleeve close to the bottom of the side mounting frame, and the first robot and the second robot are symmetrically arranged about the welding positions of the two workpieces.The double-robot arc welding station can effectively improve the efficiency and quality when two workpieces are welded into a V shape.

Description

Technical Field

[0001] This invention relates to the field of arc welding technology, specifically to a dual-robot arc welding workstation. Background Technology

[0002] An arc welding workstation is an automated welding system primarily used for metal welding operations. It uses electric arc welding technology to heat metal materials to high temperatures and melt them, joining them together. Arc welding workstations are designed to improve welding efficiency, accuracy, and consistency, while reducing the need for manual operation.

[0003] However, in actual welding operations, if two workpieces are welded into a V-shape, a single robot would need to weld the upper and lower ends of the V-shape separately, which reduces welding efficiency and makes it difficult to guarantee welding quality. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a dual-robot arc welding workstation, which can effectively improve the efficiency and quality of welding two workpieces into a V-shape.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a dual-robot arc welding workstation, comprising a frame and two workpiece positioning components installed within the frame, wherein the two workpiece positioning components are symmetrical about the center line of the frame, and the two workpiece positioning components cooperate with each other to bring the two workpieces close to each other and form a specified angle for welding.

[0006] A synchronous drive mechanism is installed on each side of the center line of the frame;

[0007] The synchronous drive mechanism includes a side mounting bracket and a double-threaded lead screw arranged vertically inside the side mounting bracket. Each of the different threads of the double-threaded lead screw has a lead screw pair installed on it. The double-threaded lead screw is driven to rotate by a drive motor installed on the side mounting bracket, thereby causing the two lead screw pairs installed on the same double-threaded lead screw to move relative to each other.

[0008] Two threaded rods are provided between the two synchronous drive mechanisms. Both ends of each threaded rod are connected to a lead screw pair at the same horizontal position. Both threaded rods are provided with threaded sleeves. A first robot is connected to the lower part of the threaded sleeve near the top of the side mounting bracket, and a second robot is connected to the upper part of the threaded sleeve near the bottom of the side mounting bracket. The first robot and the second robot are symmetrically arranged with respect to the welding position of the two workpieces. This ensures that when the two workpiece adjustment components cooperate to bring the two workpieces closer together and form a specified angle, the welding position of the two workpieces is located in the middle of the first robot and the second robot. Therefore, when the double threaded lead screw rotates, the distance between the first robot and the second robot with respect to the welding position of the two workpieces is always equal.

[0009] Preferably, the workpiece positioning assembly includes two parallel and equal-length electric telescopic rods connected to the frame. A tilting frame is provided on the side of the electric telescopic rod near the telescopic end. A clamping plate for holding the workpiece is installed on the tilting frame. A return frame is installed on both sides of the tilting frame. The telescopic ends of the two electric telescopic rods are connected to the return frames, thereby driving the tilting frame to achieve horizontal reciprocating motion. Under the mutual cooperation of the two workpiece positioning assemblies, the two tilting frames can move closer to or further away from each other.

[0010] Preferably, one of the rotating frames is equipped with a motor wheel, which is connected to the tilting frame via a rotating shaft. When the motor wheel rotates, it can drive the tilting frame to rotate, thereby forming a certain angle.

[0011] Preferably, each of the two threaded rods has a rotating gear at its side end. A rack plate that meshes with the rotating gear is provided on a side mounting bracket located on one side of the rotating gear. The side of the rack plate away from the rotating gear is connected to a cylinder mounted on the side mounting bracket. When the cylinder moves, it can drive the rack plate to move up and down, thereby causing the two meshing rotating gears to rotate synchronously, thereby driving the first robot and the second robot to move horizontally synchronously.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. In this invention, the first robot and the second robot are symmetrically arranged about the welding positions of the two workpieces. This ensures that when the two workpiece adjustment components work together to bring the two workpieces closer together and form a specified angle, the welding positions of the two workpieces are located in the middle between the first robot and the second robot. Therefore, when the double threaded screw rotates, the distance between the first robot and the second robot about the welding positions of the two workpieces is always equal, and they can perform welding from top to bottom at the same time, thereby improving the welding quality of the workpieces.

[0014] 2. In this invention, when the cylinder moves, it can drive the rack plate to move up and down, thereby causing the two meshing rotating gears to rotate synchronously, which in turn drives the first robot and the second robot to move horizontally synchronously, ensuring that the first robot and the second robot always perform synchronous welding on the same upper and lower surfaces of the workpiece during the welding process.

[0015] 3. In this invention, the telescopic end of the electric telescopic rod is connected to the return frame, thereby driving the tilting frame to achieve horizontal reciprocating motion. The return frame is equipped with a motor wheel, which is connected to the tilting frame through a rotating shaft. When the motor wheel rotates, it can drive the tilting frame to rotate, thereby forming a certain angle. Furthermore, under the mutual cooperation of the two workpiece adjustment components, the two tilting frames can move closer to or further away from each other. Attached Figure Description

[0016] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a top view of the present invention;

[0019] Figure 3 This is a schematic diagram of the structural installation of the first robot and the second robot of the present invention;

[0020] Figure 4 This is a schematic diagram of the structural installation of the tilting frame, motor wheel, and electric telescopic rod in this invention;

[0021] Figure 5 This is a schematic diagram of the structural installation of the rack plate, cylinder and rotating gear in this invention.

[0022] In the diagram: 1. Frame; 2. Workpiece positioning assembly; 21. Electric telescopic rod; 22. Inclined frame; 23. Clamping plate; 24. Return frame; 3. Synchronous drive mechanism; 31. Side mounting frame; 32. Double threaded screw; 33. Screw pair; 34. Drive motor; 4. Threaded rod; 5. First robot; 6. Second robot; 7. Motor wheel; 8. Rotating gear; 9. Rack plate; 10. Cylinder. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see Figure 1-5 The present invention provides a dual-robot arc welding workstation, comprising a frame 1 and two workpiece positioning components 2 installed in the frame 1. The two workpiece positioning components 2 are symmetrical about the center line of the frame 1, and the two workpiece positioning components 2 cooperate with each other to bring the two workpieces close to each other and form a specified angle for welding.

[0025] A synchronous drive mechanism 3 is installed on each side of the center line of the frame 1;

[0026] The synchronous drive mechanism 3 includes a side mounting frame 31 and a double threaded screw 32 vertically arranged inside the side mounting frame 31. Each thread of the double threaded screw 32 is equipped with a screw pair 33, and the double threaded screw 32 is driven to rotate by a drive motor 34 mounted on the side mounting frame 31, thereby causing the two screw pairs mounted on the same double threaded screw 32 to move relative to each other.

[0027] Two threaded rods 4 are provided between the two synchronous drive mechanisms 3. Both ends of each threaded rod 4 are connected to a lead screw pair 33 at the same horizontal position. Both threaded rods 4 are provided with threaded sleeves. A first robot 5 is connected below the threaded sleeve near the top of the side mounting bracket 31, and a second robot 6 is connected above the threaded sleeve near the bottom of the side mounting bracket 31. The first robot 5 and the second robot 6 are symmetrically arranged with respect to the welding position of the two workpieces. This ensures that when the two workpiece adjustment components 2 cooperate to bring the two workpieces closer together and form a specified angle, the welding position of the two workpieces is located in the middle of the first robot 5 and the second robot 6. Therefore, when the double threaded lead screw 32 rotates, the distance between the first robot 5 and the second robot 6 with respect to the welding position of the two workpieces is always equal.

[0028] Preferably, the workpiece positioning assembly 2 includes two parallel and equal-length electric telescopic rods 21 connected to the frame 1. A tilting frame 22 is provided on the side of the electric telescopic rod 21 near the telescopic end. A clamping plate 23 for clamping the workpiece is installed on the tilting frame 22. A return frame 24 is installed on both sides of the tilting frame 22. The telescopic ends of the two electric telescopic rods 21 are connected to the return frame 24, thereby driving the tilting frame 22 to achieve horizontal reciprocating motion. Under the mutual cooperation of the two workpiece positioning assemblies 2, the two tilting frames 22 can move closer to or further away from each other.

[0029] Preferably, one of the rotating frames 24 is provided with a motor wheel 7, which is connected to the tilting frame 22 via a rotating shaft. When the motor wheel 7 rotates, it can drive the tilting frame 22 to rotate, thereby forming a certain angle.

[0030] Preferably, each of the two threaded rods 4 has a rotating gear 8 on its side end. A rack plate 9 that meshes with the rotating gear 8 is provided on the side mounting bracket 31 located on one side of the rotating gear 8. The side of the rack plate 9 away from the rotating gear 8 is connected to a cylinder 10 mounted on the side mounting bracket 31. When the cylinder 10 moves, it can drive the rack plate 9 to move up and down, thereby causing the two meshing rotating gears 8 to rotate synchronously, thereby driving the first robot 5 and the second robot 6 to move horizontally synchronously.

[0031] Working principle: The telescopic end of the electric telescopic rod 21 is connected to the return frame 24, thereby driving the tilting frame 22 to achieve horizontal reciprocating motion. The return frame 24 is equipped with a motor wheel 7, and with the mutual cooperation of the two workpiece adjustment components 2, the two tilting frames 22 are brought closer together. The motor wheel 7 is connected to the tilting frame 22 through a rotating shaft. When the motor wheel 7 rotates, it can drive the tilting frame 22 to rotate, thereby forming a certain angle, so that the two workpieces are in a V-shape. The first robot 5 and the second robot 6 are symmetrically arranged about the welding positions of the two workpieces, so that when the two workpiece adjustment components 2 cooperate to move the workpieces into a V-shape, the two workpieces can be reciprocated in a V-shape. When two workpieces approach each other and form a specified angle, the welding position of the two workpieces is located in the middle of the first robot 5 and the second robot 6. Therefore, when the double threaded screw 32 rotates, the distance between the first robot 5 and the second robot 6 about the welding position of the two workpieces is always equal, and they perform welding simultaneously from top to bottom. At the same time, when the rack plate 9 moves up and down, the two meshing rotating gears 8 rotate synchronously, thereby driving the first robot 5 and the second robot 6 to move horizontally synchronously, ensuring that the first robot 5 and the second robot 6 always perform synchronous welding on the same position of the workpiece from top to bottom during the welding process.

[0032] The above description is merely a preferred embodiment of the present invention and is not intended to further limit the present invention. All equivalent changes made based on the description and drawings of the present invention are within the protection scope of the present invention.

Claims

1. A twin robot arc welding station, characterized in that, The rack (1) and two workpiece positioning assemblies (2) installed in the rack (1), two said workpiece positioning assemblies (2) are symmetrical about the center line of the rack (1); One synchronous driving mechanism (3) is installed on each side of the center line of the rack (1); The synchronous driving mechanism (3) includes a side mounting frame (31), a double-thread screw rod (32) vertically arranged in the side mounting frame (31), one screw rod pair (33) is installed on the different threads of the double-thread screw rod (32), and the double-thread screw rod (32) is driven to rotate by the driving motor (34) installed on the side mounting frame (31); Two screw rods (4) are arranged between two said synchronous driving mechanisms (3), the two ends of each screw rod (4) are connected with the screw rod pairs (33) in the same horizontal position, threaded sleeves are arranged on the two screw rods (4), the first robot (5) is connected below the threaded sleeve close to the top of the side mounting frame (31), the second robot (6) is connected above the threaded sleeve close to the bottom of the side mounting frame (31), and the first robot (5) and the second robot (6) are symmetrically arranged about the welding position of the two workpieces; The workpiece positioning assembly (2) includes two electric telescopic rods (21) connected with the rack (1) and arranged in parallel and equal length, an inclined frame (22) is arranged on one side close to the telescopic end of the electric telescopic rod (21), a clamping plate (23) for clamping the workpiece is installed on the inclined frame (22), and a back-shaped frame (24) is installed on both sides of the inclined frame (22), the telescopic ends of the two electric telescopic rods (21) are connected with the back-shaped frame (24); One of said back-shaped frames (24) is provided with a motor wheel (7), and the motor wheel (7) is connected with the inclined frame (22) through a rotating shaft; The side end of the two screw rods (4) is provided with a rotating gear (8), the side mounting frame (31) on one side of the rotating gear (8) is provided with a rack plate (9) engaged with the rotating gear (8), and the side away from the rotating gear (8) of the rack plate (9) is connected with the air cylinder (10) installed on the side mounting frame (31).

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