Support device for aluminum stud flight welding

Abstract

A kind of aluminum stud flight welding support device, including welding torch mounting bracket, the upper end of the column of welding torch mounting bracket is provided with a cantilever beam, welding torch is fixedly installed on the cantilever beam, the head of welding torch is downward, a support mechanism is installed on the column of welding torch mounting bracket, the support mechanism includes a strong clamping cylinder, a support arm, the strong clamping cylinder is fixedly installed on the column by a mounting bracket, the rotating arm of the strong clamping cylinder is fixedly connected with the support arm, the support arm extends to below the head of welding torch, when workpiece is carried to below the head of welding torch by handling robot, the workpiece gripped on the mechanical hand of handling robot is supported by the support arm.

Description

Technical Field

[0001] This utility model relates to the field of flight welding, specifically to a support device for flight welding of aluminum studs. Background Technology

[0002] In recent years, the application of aluminum alloy materials in the body structure of new energy vehicles has increased, leading to the widespread use of aluminum stud welding technology. Aluminum studs primarily function as wiring harness mounting points and grounding points in the vehicle body structure. Due to the varying positions and orientations of aluminum studs on the workpiece, a handling robot is typically used to pick up the workpiece and move it to a fixed welding torch position before welding (i.e., flying welding). During welding, the welding torch generates axial pressure applied to the workpiece, while the workpiece's rigidity is provided by the robot and the load-bearing fixture. However, in existing technologies, the rigid support provided by general handling robots during aluminum stud welding is insufficient. Workpiece wobbling during welding can easily lead to arc ignition failure and incomplete welds, resulting in unstable welding quality. While high-load handling robots can provide sufficient rigid support, they are expensive and require a larger production line footprint. For example, the price difference between a FANUC 210kg robot and a 360kg robot is approximately 120,000 yuan, making it unaffordable for many companies. Summary of the Invention

[0003] To address the aforementioned problems, this utility model provides a support device for aluminum stud flying welding. During the welding of aluminum studs, the support device provides sufficient rigid support for the workpiece, ensuring the stability of the workpiece during the welding process and improving the welding quality.

[0004] The technical solution of this utility model is as follows: a support device for aluminum stud flying welding, including a welding torch mounting frame. A cantilever beam is provided at the upper end of the column of the welding torch mounting frame. A welding torch is fixedly mounted on the cantilever beam with the torch tip pointing downwards. A support mechanism is mounted on the column of the welding torch mounting frame. The support mechanism includes a high-pressure clamping cylinder and a support arm. The high-pressure clamping cylinder is fixedly mounted on the column through a mounting bracket. The rotating arm of the high-pressure clamping cylinder is fixedly connected to the support arm. The support arm extends below the welding torch tip and is used to support the workpiece gripped by the robotic arm of the handling robot when the handling robot moves the workpiece to below the welding torch tip.

[0005] Preferably, a mounting base is provided on the column, and the powerful clamping cylinder is fixed to the mounting base by a mounting bracket.

[0006] Preferably, a first buffer device is fixedly installed on the mounting base.

[0007] Preferably, the actuator housing of the high-pressure clamping cylinder is provided with hinge shafts on both sides, and the rotating arm is hinged to the hinge shafts.

[0008] Preferably, a second buffer device is fixedly installed on the actuator housing of the high-pressure clamping cylinder.

[0009] Preferably, the actuator housing of the high-pressure clamping cylinder is provided with a limiting device, and the front end of the limiting device is provided with a limiting block.

[0010] Preferably, the welding torch mounting bracket is equipped with a laser rangefinder sensor.

[0011] Preferably, the free end of the support arm is provided with a plurality of support blocks, and an insulating pad is provided between the support blocks and the support arm.

[0012] Preferably, a support bracket is provided on one side of the column.

[0013] The advantages of this utility model are: 1. This utility model provides sufficient support force to the workpiece when it is subjected to axial pressure applied by the welding torch during the welding of aluminum studs by adding a support mechanism to the welding torch mounting bracket, thereby improving the stability of the parts during the welding process and ensuring the welding quality.

[0014] 2. The support mechanism of this utility model costs about 10,000 yuan. Compared with the cost of a high-load robot, this utility model has low cost, wide applicability, and simple structure. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the welding torch mounting bracket of this utility model; Figure 2 This is a front view structural diagram of the support mechanism of this utility model; Figure 3 This is a top view of the support mechanism of this utility model. Detailed Implementation

[0016] See Figures 1 to 3A support device for flying welding of aluminum studs includes a welding torch mounting frame 1. A cantilever beam 10 is provided at the upper end of the column 11 of the welding torch mounting frame 1. A welding torch 13 is fixedly mounted on the cantilever beam 10, with the torch tip pointing downwards. A laser rangefinder 9 is provided on the welding torch mounting frame 1. The laser rangefinder 9 detects the distance between itself and the support arm 6 in real time. If the distance is greater than a set threshold, the transport robot can move the workpiece to the next processing step without waiting for the support arm 6 to fully rotate back, thus speeding up the production cycle and improving processing efficiency. In this embodiment, the set threshold is the distance between the support arm 6 and the laser rangefinder 9 when the support arm 6 is at a 45° angle to the horizontal direction. A support bracket 12 is provided on one side of the column 11 to increase the stability of the welding torch mounting frame 1. A support mechanism is installed on the column 11 of the welding torch mounting bracket 1. The support mechanism includes a high-pressure clamping cylinder 4 and a support arm 6. The high-pressure clamping cylinder 4 is bolted to the mounting base 3 on the column 11 via a mounting bracket 2, avoiding excessive bolt holes on the column 11 which would affect its strength. The rotating arm 41 of the high-pressure clamping cylinder 4 is fixedly connected to the support arm 6. The support arm 6 extends below the welding torch head 13 and is used to support the workpiece gripped by the robotic arm of the handling robot when the robot moves the workpiece to the area below the welding torch head 13. The support arm 6 is provided with multiple support blocks 61, and an insulating gasket 62 is provided between the support block 61 and the support arm 6. Positioning holes are provided on the support block 61 and the insulating gasket 62. Positioning is achieved by inserting an insulating pin into the positioning hole, and then the support block 61 and the insulating gasket 62 are fixed by bolts. The gasket used for bolt fixing is an insulating gasket. This structure allows the height of the support block 61 to be adjusted by increasing or decreasing the number of insulating gaskets 62, thus better supporting the workpiece gripped by the robotic arm of the handling robot. Furthermore, the insulating gaskets 62 and insulating pins prevent the welding torch arc from being transmitted to the support arm 6 and the powerful clamping cylinder 4, reducing their service life and preventing other safety accidents. A first buffer device 5 is fixedly installed at the lower end of the mounting base 3. The first buffer device 5 is an elastic component. When the powerful clamping cylinder 4 drives the support arm 6 to rotate back, and the support arm 6 contacts the first buffer device 5, the elastic component of the first buffer device 5 provides elastic cushioning for the support arm 6, reducing vibration. The second buffer device 7 is fixedly installed on the execution end housing 41 of the high-pressure clamping cylinder 4. The second buffer device 7 is an elastic component. When the high-pressure clamping cylinder 4 drives the support arm 7 to rotate to the position of supporting the workpiece, and the support arm 6 contacts the second buffer device 7, the elastic component of the second buffer device 7 provides elastic buffering for the support arm 6, reducing the vibration of the support arm 6.The actuator housing 41 of the high-power clamping cylinder 4 is provided with a limiting device 8. The front end of the limiting device 8 is provided with a limiting block. The limiting block limits the support arm 6 to prevent the support arm 6 from rotating excessively and colliding with the handling robot and the workpiece.

[0017] The working process of this utility model is as follows: First, the powerful clamping cylinder 4 does not move. At this time, the support arm 6 is in contact with the first buffer device 5. After the handling robot moves the workpiece to below the welding torch 13, the powerful clamping cylinder 4 drives the support arm 6 to rotate through the rotating arm 42 until the support arm 6 rotates and contacts the second buffer device 7. The elastic component of the second buffer device 7 provides elastic buffering for the support arm 6. Then, the limiting block at the front end of the limiting device 8 limits the support arm 6, so that the support block 61 of the support arm 6 supports and limits the workpiece gripped by the robotic arm of the handling robot. Then, the welding torch 13 performs aluminum stud welding on the workpiece. After the welding is completed, the powerful clamping cylinder 4 drives the support arm 6 to rotate. When the support arm 6 rotates to an angle greater than 45° with the horizontal direction, the laser ranging sensor 9 detects that the distance between it and the support arm 6 is greater than the set threshold. At this time, the handling robot moves the workpiece to the next processing area. The support arm 6 continues to rotate until it contacts the first buffer device 5, and the elastic component of the first buffer device 5 provides elastic buffering for the support arm 6.

[0018] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications made to the present utility model by those skilled in the art without departing from the spirit of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A support device for aluminum stud flying welding, comprising a welding torch mounting frame (1), wherein a cantilever beam (10) is provided at the upper end of the column (11) of the welding torch mounting frame (1), and a welding torch (13) is fixedly mounted on the cantilever beam (10), wherein the torch head (13) faces downward, characterized in that: A support mechanism is installed on the column (11) of the welding torch mounting bracket (1). The support mechanism includes a high-pressure clamping cylinder (4) and a support arm (6). The high-pressure clamping cylinder (4) is fixedly mounted on the column (11) through a mounting bracket (2). The rotating arm (42) of the high-pressure clamping cylinder (4) is fixedly connected to the support arm (6). The support arm (6) extends to the bottom of the welding torch (13) and is used to support the workpiece gripped by the robotic arm of the handling robot when the handling robot moves the workpiece to the bottom of the welding torch (13).

2. The support device for aluminum stud flying welding according to claim 1, characterized in that: An installation base (3) is provided on the column (11), and the powerful clamping cylinder (4) is fixed to the installation base (3) through the installation bracket (2).

3. The support device for aluminum stud flying welding according to claim 2, characterized in that: The first buffer device (5) is fixedly installed on the mounting base (3).

4. The support device for aluminum stud flying welding according to claim 1, characterized in that: The actuator housing (41) of the high-power clamping cylinder (4) has hinge shafts on both sides, and the rotating arm (42) is hinged through the hinge shafts.

5. The support device for aluminum stud flying welding according to claim 3, characterized in that: A second buffer device (7) is fixedly installed on the actuator housing (41) of the high-pressure clamping cylinder (4).

6. The support device for aluminum stud flying welding according to claim 5, characterized in that: The actuator housing (41) of the powerful clamping cylinder (4) is provided with a limiting device (8), and the front end of the limiting device (8) is provided with a limiting block.

7. The support device for aluminum stud flying welding according to claim 1, characterized in that: The welding torch mounting bracket (1) is equipped with a laser rangefinder (9).

8. The support device for aluminum stud flying welding according to claim 1, characterized in that: The free end of the support arm (6) is provided with a plurality of support blocks (61), and an insulating gasket (62) is provided between the support block (61) and the support arm (6).

9. The support device for aluminum stud flying welding according to claim 1, characterized in that: A support bracket (12) is provided on one side of the column (11).

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