An industrial welding robot flexible welding tooling fixture

Abstract

The utility model discloses a kind of industrial welding robot flexible welding tool holder, it is related to industrial robot welding auxiliary equipment technical field, including annular disc and link frame, the link frame is used to be connected with robot, the annular disc is rotatably installed in one side of link frame, the inboard of link frame is fixedly connected with clamping mechanism, the clamping mechanism includes limit ring and movable rod, the limit ring is connected by bolt with link frame, the utility model is by setting up by annular disc, clamping mechanism, movable rod, positioning boss, gyro wheel, link end head and is composed of flexible clamping structure, both can realize the self-adapting clamping of different specifications workpiece, without frequently replacing fixture, also through the double-direction guiding cooperation of positioning boss and movable rod, positioning sheet and guide rod, avoid the deflection of movable part in clamping process, ensure workpiece clamping firm, effectively improve the flexible adaptability and clamping stability of fixture.

Description

Technical Field

[0001] This utility model relates to the field of industrial robot welding auxiliary equipment technology, and in particular to a flexible welding fixture for industrial welding robots. Background Technology

[0002] In industrial automated welding production, welding robots need to be used with tooling fixtures to fix the workpiece in order to ensure the accuracy of the welding position and the stability of the welding quality.

[0003] For example, CN220515904U discloses a welding robot tooling fixture, including a mounting joint, a servo switching base A, a support arm, a servo switching base B, a suction cup module, and a fixture module. The mounting joint is connected to the end effector of the articulated robot, and the lower side of the mounting joint is connected to the support arm through the servo switching base A. Servo switching bases B are installed on both ends of the support arm, and the suction cup module and fixture module are respectively installed at the ends of the two servo switching bases B. The suction cup module and fixture module can rotate circumferentially with the servo switching base B and switch the fixture mode with the servo switching base A. The fixture module includes a guide rail bracket, a screw, a screw sleeve, a motor, and a fixture unit. The screw is located inside the guide rail groove of the guide rail bracket. One side of the screw shaft is rotatably connected to the inner wall of the guide rail groove, and the other side of the screw shaft is connected to the motor.

[0004] However, in existing technologies, most welding fixtures suffer from insufficient flexibility, only adapting to workpieces of a single specification or specific shape. When welding workpieces of different sizes and structures is required, frequent fixture changes or adjustments to the fixture structure are necessary. This not only increases fixture changeover time and reduces production efficiency but also easily affects welding accuracy due to fixture assembly and disassembly errors. At the same time, some fixtures use manual adjustment or simple mechanical transmission for workpiece angle adjustment mechanisms, resulting in low adjustment accuracy and poor stability. This makes it difficult to meet the requirements for multi-angle positioning of workpieces in high-precision welding operations. Furthermore, the clamping mechanism is mostly a single-guide structure, which is prone to displacement of moving parts under clamping force, leading to loose workpiece clamping and further affecting welding quality. Utility Model Content

[0005] The purpose of this utility model is to solve the problems of insufficient flexibility and poor adaptability of existing welding fixtures, low workpiece angle adjustment accuracy and poor stability, and easy deviation of the clamping mechanism leading to insecure workpiece fixation. Therefore, a flexible welding fixture for industrial welding robots is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a flexible welding fixture for an industrial welding robot, comprising an annular disk and a connecting frame, wherein the connecting frame is used to connect with the robot, the annular disk is rotatably mounted on one side of the connecting frame, and a clamping mechanism is fixedly connected to the inner side of the connecting frame, the clamping mechanism comprising a limiting ring and a movable rod, the limiting ring being bolted to the connecting frame, one end of the movable rod being fixedly connected to a connecting end, the connecting end being slidably connected to the annular disk, and the other end of the movable rod being rotatably mounted with a roller, a strip-shaped hole being provided at the junction of the annular disk and the connecting end, a servo motor being detachably mounted on the lower side of one side of the connecting frame, and a convex tooth being fixedly mounted on the edge of the annular disk, the gear at the output end of the convex tooth meshing with the convex tooth.

[0007] Preferably, a limiting block is fixedly installed on one side of the connecting frame, and the limiting block is slidably connected to the annular disk.

[0008] Preferably, an arc-shaped hole is provided at the junction of the annular disk and the limiting block, and the arc-shaped hole and the strip-shaped hole are distributed alternately.

[0009] Preferably, a positioning piece is fixedly installed on one side of the limiting ring, and a guide rod is fixedly installed on one end of the roller.

[0010] Preferably, the guide rod is slidably connected to the positioning piece, and the axis of the positioning piece coincides with the axis of the connecting end.

[0011] Preferably, a positioning protrusion is fixedly installed on one side of the limiting ring, and the movable rod is slidably connected to the positioning protrusion.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, a flexible clamping structure consisting of an annular disk, a clamping mechanism, a movable rod, a positioning protrusion, rollers, and a connecting end is provided. With the sliding fit between the strip hole on the annular disk and the connecting end, when the annular disk rotates, it can drive multiple movable rods to move the rollers synchronously. This not only enables adaptive clamping of workpieces of different specifications without frequent fixture changes, but also avoids the displacement of moving parts during clamping through the dual guiding fit of the positioning protrusion and the movable rod, as well as the positioning plate and the guide rod, ensuring that the workpiece is firmly clamped and effectively improving the flexibility and stability of the fixture.

[0013] 2. In this utility model, by adopting a servo motor and a meshing transmission structure with protruding teeth on the edge of the annular disk, the traditional manual or simple mechanical adjustment method can be replaced. The rotation speed and angle of the annular disk can be precisely controlled, thereby achieving precise adjustment of the welding angle of the workpiece. At the same time, the sliding cooperation between the upper limit block of the connecting frame and the arc-shaped hole of the annular disk further improves the stability of the annular disk during rotation, avoids shaking and deviation during the angle adjustment process, and ensures that the workpiece maintains accurate positioning during multi-angle welding, meeting the requirements of high-precision welding operations. Furthermore, the detachable installation design of the servo motor facilitates later maintenance and replacement, reducing equipment maintenance costs. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a flexible welding fixture for an industrial welding robot proposed in this utility model. Figure 2 This is a schematic diagram of the planar structure of a flexible welding fixture for an industrial welding robot proposed in this utility model. Figure 3 This is a schematic diagram showing the disassembled structure of the connecting frame and clamping mechanism of a flexible welding fixture for an industrial welding robot proposed in this utility model. Figure 4 This is a three-dimensional structural diagram of the clamping mechanism of a flexible welding fixture for an industrial welding robot proposed in this utility model.

[0015] Legend: 1. Annular disk; 2. Clamping mechanism; 3. Limiting block; 4. Servo motor; 5. Arc-shaped hole; 6. Raised tooth; 7. Strip hole; 8. Connecting frame; 21. Limiting ring; 22. Movable rod; 23. Positioning protrusion; 24. Roller; 25. Connecting end; 26. Positioning piece; 27. Guide rod. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0018] Example 1: As Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, this utility model provides a flexible welding fixture for an industrial welding robot, including an annular disk 1 and a connecting frame 8. The connecting frame 8 is used to connect with the robot. The annular disk 1 is rotatably mounted on one side of the connecting frame 8. A clamping mechanism 2 is fixedly connected to the inner side of the connecting frame 8. The clamping mechanism 2 includes a limiting ring 21 and a movable rod 22. The limiting ring 21 is bolted to the connecting frame 8. One end of the movable rod 22 is fixedly connected to a connecting end 25, which is slidably connected to the annular disk 1. A roller 24 is rotatably mounted on the other end of the movable rod 22. A strip hole 7 is provided at the junction of the connecting end 25 and the connecting frame 8. A servo motor 4 is detachably installed on the lower side of one side of the connecting frame 8. A tooth 6 is fixedly installed on the edge of the annular disk 1. The gear at the output end of the tooth 6 meshes with the tooth 6. A positioning piece 26 is fixedly installed on one side of the limiting ring 21. A guide rod 27 is fixedly installed on one end of the roller 24. The guide rod 27 is slidably connected to the positioning piece 26. The axis of the positioning piece 26 coincides with the axis of the connecting end 25. A positioning protrusion 23 is fixedly installed on one side of the limiting ring 21. The movable rod 22 is slidably connected to the positioning protrusion 23.

[0019] The specific settings and functions of this embodiment are described below. The connecting frame 8 is used to connect with the robot to achieve overall cooperation with the robot. The servo motor 4 is detachably installed on the lower side of one side of the connecting frame 8. The gear at its output end meshes with the protruding teeth 6 fixedly installed on the edge of the annular disk 1. When the servo motor 4 is started, the meshing transmission between the gear and the protruding teeth 6 can drive the annular disk 1 to rotate on one side of the connecting frame 8. The inner side of the connecting frame 8 is connected by bolts to a limiting ring 21. The limiting ring 21 is a component of the clamping mechanism 2. The clamping mechanism 2 also includes a movable rod 22. A positioning protrusion 23 is fixedly installed on one side of the limiting ring 21. The movable rod 22 is slidably connected to the positioning protrusion 23. One end of the movable rod 22 is fixedly connected to the connecting end 25, which is slidably connected to the strip hole 7 opened on the annular disk 1. A roller 24 is rotatably mounted on the other end of the rod 22, and a positioning piece 26 fixedly mounted on one side of the limiting ring 21 and a guide rod 27 fixedly mounted on one end of the roller 24 are slidably connected. The axis of the positioning piece 26 coincides with the axis of the connecting end 25. When the annular disk 1 rotates, the strip hole 7 will push the connecting end 25, causing the connecting end 25 to drive the movable rod 22 to move along the positioning protrusion 23 toward the center of the limiting ring 21. At the same time, the guide rod 27 will slide along the positioning piece 26 to ensure the stability of the movement of the movable rod 22. During the movement of the movable rod 22, the roller 24 will move synchronously. Through the coordinated movement of the rollers 24 in the multiple clamping mechanisms 2, the clamping and positioning of the welding workpiece is realized. The continuous rotation of the annular disk 1 can drive the clamped workpiece to adjust the angle to meet the welding needs of the robot at different positions.

[0020] Example 2: Figure 1 , Figure 2 and Figure 3As shown, a limiting block 3 is fixedly installed on one side of the connecting frame 8. The limiting block 3 is slidably connected to the annular disk 1. An arc-shaped hole 5 is provided at the junction of the annular disk 1 and the limiting block 3. The arc-shaped hole 5 and the strip-shaped hole 7 are distributed alternately.

[0021] The overall effect of this embodiment is that when the servo motor 4 drives the annular disk 1 to rotate on one side of the connecting frame 8, the limiting block 3 slides within the arc-shaped hole 5, guiding and limiting the rotation of the annular disk 1, preventing it from shifting during rotation. Simultaneously, the staggered distribution of the arc-shaped hole 5 and the strip-shaped hole 7 avoids positional conflict between them on the annular disk 1, ensuring that the annular disk 1 can both drive the connecting end 25 through the strip-shaped hole 7 to move the movable rod 22 for clamping function, and ensure its own rotational stability through the cooperation of the arc-shaped hole 5 and the limiting block 3. Beneficial effects: The sliding cooperation between the limiting block 3 and the arc-shaped hole 5 on the annular disk 1 further enhances the stability and accuracy of the annular disk 1's rotation, avoiding wobbling or shifting caused by uneven force on the annular disk 1, ensuring the precision of the clamping mechanism 2's actions, thereby improving the accuracy of workpiece clamping and angle adjustment, making the entire tooling fixture operate more smoothly and reliably, and further improving the quality and efficiency of welding operations.

[0022] The usage and working principle of this device are as follows: The connecting frame 8 is connected to the robot to achieve overall cooperation. The servo motor 4 is detachably installed on the lower side of one side of the connecting frame 8, and the gear at its output end meshes with the protruding tooth 6 at the edge of the annular disk 1. The limiting ring 21 is connected to the inner side of the connecting frame 8 by bolts. When the servo motor 4 is started, the annular disk 1 is driven to rotate on one side of the connecting frame 8 through the meshing transmission of the gear and the protruding tooth 6. At this time, the limiting block 3 slides in the arc-shaped hole 5. During the rotation of the annular disk 1, the strip hole 7 pushes the connecting end 25, so that the movable rod 22 moves along the positioning protrusion 23 towards the center of the limiting ring 21. At the same time, the guide rod 27 slides along the positioning piece 26. The movable rod 22 drives the roller 24 to move synchronously. The clamping and positioning of the welding workpiece is achieved through the coordinated movement of the roller 24 in multiple clamping mechanisms 2. The continuous rotation of the annular disk 1 drives the clamped workpiece to adjust the angle to meet the welding requirements of the robot at different positions.

[0023] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A flexible welding fixture for an industrial welding robot, comprising an annular disk (1) and a connecting frame (8), the connecting frame (8) being used for connection with a robot, the annular disk (1) being rotatably mounted on one side of the connecting frame (8), characterized in that: The inner side of the connecting frame (8) is fixedly connected to a clamping mechanism (2). The clamping mechanism (2) includes a limiting ring (21) and a movable rod (22). The limiting ring (21) is connected to the connecting frame (8) by bolts. One end of the movable rod (22) is fixedly connected to a connecting end (25). The connecting end (25) is slidably connected to the annular disk (1). The other end of the movable rod (22) is rotatably mounted with a roller (24). A strip hole (7) is opened at the junction of the annular disk (1) and the connecting end (25). A servo motor (4) is detachably installed on the lower side of one side of the connecting frame (8). A tooth (6) is fixedly installed on the edge of the annular disk (1). The gear at the output end of the tooth (6) meshes with the tooth (6).

2. The flexible welding fixture for an industrial welding robot according to claim 1, characterized in that: A limiting block (3) is fixedly installed on one side of the connecting frame (8), and the limiting block (3) is slidably connected to the annular disk (1).

3. The flexible welding fixture for an industrial welding robot according to claim 1, characterized in that: An arc-shaped hole (5) is provided at the junction of the annular disk (1) and the limiting block (3), and the arc-shaped hole (5) and the strip hole (7) are distributed alternately.

4. The flexible welding fixture for an industrial welding robot according to claim 1, characterized in that: A positioning piece (26) is fixedly installed on one side of the limiting ring (21), and a guide rod (27) is fixedly installed on one end of the roller (24).

5. The flexible welding fixture for an industrial welding robot according to claim 4, characterized in that: The guide rod (27) is slidably connected to the positioning piece (26), and the axis of the positioning piece (26) coincides with the axis of the connecting end (25).

6. The flexible welding fixture for an industrial welding robot according to claim 1, characterized in that: A positioning protrusion (23) is fixedly installed on one side of the limiting ring (21), and the movable rod (22) is slidably connected to the positioning protrusion (23).

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