A robotic welding fixture

Abstract

The utility model discloses a kind of robot welding jigs, belong to robot welding auxiliary tooling technical field, the utility model is provided with the positioning plate of bottom fixed connection has base plate, the positioning plate one side fixed connection has guide rail, the other side rotationally connected with bidirectional screw rod;And symmetrically set up the clamping block for clamping workpiece, it is slidably connected with the guide rail by guide block;Still include U-shaped rod, one side is fixedly connected with the guide block, the other end is screw transmission with the bidirectional screw rod;Among them, the bidirectional screw rod is drivingly connected with driving assembly, and driving force is provided by the motor of the driving assembly, the jig realizes automatic clamping, fixed workpiece, reduces manual intervention, convenient to operate, improves work efficiency.

Description

Technical Field

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

[0002] In robotic welding of cylindrical components or components with cylindrical clamping features, such as the transverse and vertical cylindrical sleeve structures in rail vehicle bogie components, motor shock absorbers, and other products, as well as spring seats, brake hangers, and other components, welding fixtures are required and used in conjunction with the robot's positioner.

[0003] Traditional robotic welding fixtures rely on manually rotating a joystick to move clamping blocks and fix objects, which is cumbersome to operate. For example, the robotic welding fixture disclosed in Chinese Utility Model Patent CN 212634818 U includes a base, a first housing fixedly connected to the top of the base, and two second housings fixedly connected to the top of the first housing. The interior of each second housing is rotatably connected to a first gear and a second gear via bearings. A joystick is fixedly connected to one side of the first gear, and one side of the first gear meshes with the second gear. A threaded rod is fixedly connected to the second gear. A slide bar is fixedly connected to the top of the first housing. In use, the operation method is still to hold the joystick by hand. The threaded rod starts to rotate with the second gear. During the rotation of the threaded rod, the slider moves on the slide bar, and the clamping blocks fixedly connected to the slider also begin to tighten from both sides to the middle, thereby clamping the material to be welded and waiting for welding. In actual use, the above fixture still requires the joystick to move the clamping blocks to clamp and fix the object, which is inconvenient to operate.

[0004] Therefore, in view of the above problems, it is necessary for this utility model to provide a robotic welding fixture that requires less manual intervention and is easy to operate. Utility Model Content

[0005] The purpose of this utility model is to overcome the defects of the existing technology and provide a robot welding fixture to solve the problem that the existing fixtures require manual operation when clamping materials, which is cumbersome.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model discloses a robotic welding fixture, comprising:

[0008] A positioning plate with a base plate fixed to its bottom, a guide rail fixed to one side of the positioning plate and a bidirectional screw rotatably connected to the other side; and

[0009] Symmetrically arranged clamping blocks for holding workpieces are slidably connected to the guide rail via guide blocks; it also includes...

[0010] The U-shaped rod has one side fixedly connected to the guide block and the other end helically driven by the bidirectional screw.

[0011] The bidirectional screw is connected to the drive assembly and is driven by the motor of the drive assembly.

[0012] Furthermore, there is a belt drive between the drive assembly and the bidirectional screw.

[0013] Furthermore, the drive assembly has a fixing plate fixedly connected to the positioning plate, and a PLC controller mounted on the clamping block;

[0014] The motor is fixedly connected to the fixed plate, the PLC controller is electrically connected to the motor, the power output shaft of the motor is connected to the first pulley, the middle of the bidirectional screw is fixedly connected to the second pulley, and a transmission belt is connected between the first pulley and the second pulley.

[0015] Furthermore, a vision sensor is fixedly connected to the top wall of the clamping block, and a pressure sensor patch is fixedly connected to the inner wall of the clamping block. Both the vision sensor and the pressure sensor patch are electrically connected to the PLC controller.

[0016] Furthermore, the motor is a servo motor.

[0017] In the above technical solution, the robot welding fixture provided by this utility model has the following advantages:

[0018] The robot welding fixture designed in this utility model has a positioning plate with a guide rail fixed to one side and a bidirectional screw rotatably connected to the other side. Clamping blocks are symmetrically slidably connected to the guide rail. One side of the U-shaped rod is fixedly connected to the guide block, and the other end is helically driven by the bidirectional screw. The bidirectional screw is connected to the drive assembly and is driven by the motor of the drive assembly. This drives the U-shaped rod to move the clamping blocks along the guide rail to clamp the workpiece, thus realizing automated clamping and fixing of the workpiece, reducing manual intervention, making operation convenient, and improving work efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is a schematic diagram of the overall front structure of a robot welding fixture disclosed in this utility model;

[0021] Figure 2 yes Figure 1 Another perspective structural diagram;

[0022] Figure 3 This is a schematic diagram of the overall rear structure of a robot welding fixture disclosed in this utility model;

[0023] Figure 4 This is a rear view of a robot welding fixture disclosed in this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Base plate; 2. Positioning plate; 3. Guide rail; 4. Guide block; 5. Clamping block; 6. U-shaped rod; 7. Bidirectional screw; 8. Adaptor cylinder; 9. Second pulley; 10. Fixing plate; 11. Servo motor; 12. Power output shaft; 13. First pulley; 14. Transmission belt; 15. PLC controller; 16. Vision sensor; 17. Pressure sensor patch. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0027] See Figure 1-4 As shown;

[0028] A robot welding fixture of utility model includes: a base plate 1 and a positioning plate 2;

[0029] A vertically arranged positioning plate 2 is fixedly connected to the upper surface of the substrate 1. A guide rail 3 is fixedly connected to one side of the positioning plate 2. Two guide blocks 4 are symmetrically slidably connected to the guide rail 3. A clamping block 5 is fixedly connected to the guide block 4. A driving assembly is provided on the other side of the positioning plate 2. A U-shaped rod 6 is fixedly connected to the guide block 4. The end of the U-shaped rod 6 away from the guide block 4 is screwed to a bidirectional screw 7 rotatably connected to the positioning plate 2. The bidirectional screw 7 is connected to the driving assembly and is driven by the servo motor 11 of the driving assembly.

[0030] In use, the operator places the cylindrical workpiece to be welded on the substrate 1. The servo motor 11 of the drive assembly drives the bidirectional screw 7 to move the two U-shaped rods 6 relative to each other, thereby causing the two guide blocks 4 to move relative to each other on the guide rail 3. The guide blocks 4 drive the two clamping blocks 5 to move relative to each other to clamp and limit the cylindrical workpiece. The operation is convenient and quick, and there is no need for the operator to manually rotate the workpiece to clamp and fix it.

[0031] See Figure 3 and 4 As shown:

[0032] The drive assembly is connected to the bidirectional screw 7 by belt drive, and the two ends of the bidirectional screw 7 are rotatably connected to the positioning plate 2 through bushings 8;

[0033] The drive assembly includes a fixed plate 10, a servo motor 11, and a PLC controller 15;

[0034] The positioning plate 2 is fixedly connected to the fixing plate 10 on the side of the bidirectional screw 7. The fixing plate 10 is fixedly connected to the servo motor 11. The power output shaft 12 of the servo motor 11 is connected to the first pulley 13. The middle part of the bidirectional screw 7 is fixedly connected to the second pulley 9. A transmission belt 14 is connected between the first pulley 13 and the second pulley 9.

[0035] A PLC controller 15 is fixedly connected to one of the two clamping blocks 5. The PLC controller 15 is electrically connected to the servo motor 11. When in use, the operator controls the servo motor 11 to start through the PLC controller 15, drives the bidirectional screw 7 to rotate, and drives the clamping block 5 to move and clamp the workpiece through the U-shaped rod 6 and the guide block 4, so as to realize the automated clamping and fixing of the workpiece, reduce manual intervention and make the operation convenient.

[0036] Preferably, a vision sensor 16 is fixedly connected to the top wall of the clamping block 5, and a pressure sensor patch 17 is fixedly connected to the inner wall of the clamping block 5.

[0037] Both the vision sensor 16 and the pressure sensor patch 17 are connected to the PLC controller 15 via electrical signals. By setting the vision sensor 16 and the pressure sensor patch 17 on the clamping block 5, the vision sensor 16 is used to identify the cylindrical workpiece to be welded. The PLC controller 15 receives the signal and drives the servo motor 11 to clamp the workpiece. After clamping, the pressure sensor patch 17 presses against the outer wall of the workpiece to generate a pressure signal. The PLC controller 15 receives the signal and stops driving the servo motor 11, so that the clamping block 5 no longer moves. The structure is designed to be user-friendly and the workpiece clamping is automated.

[0038] When using this robot welding fixture, it is connected to the robot's positioner via a base plate 1. The workpiece to be welded is then placed on the base plate 1 and automatically clamped by the clamping block 5. The robot is then controlled to flip the positioner to a suitable position for welding. After welding is completed, the PLC controller 15 controls the motor to drive the bidirectional screw 7 to rotate and release the workpiece, thus completing the welding process.

[0039] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A robotic welding fixture, characterized in that, include: A positioning plate (2) with a base plate (1) fixed to its bottom, a guide rail (3) fixed to one side of the positioning plate (2) and a bidirectional screw (7) rotatably connected to the other side; and A clamping block (5) for clamping the workpiece is symmetrically arranged, and it is slidably connected to the guide rail (3) through a guide block (4); it also includes The U-shaped rod (6) is fixedly connected to the guide block (4) on one side and is screwed to the bidirectional screw (7) at the other end; The bidirectional screw (7) is connected to the drive assembly and is driven by the motor of the drive assembly.

2. The robot welding fixture according to claim 1, characterized in that: The drive assembly is connected to the bidirectional screw (7) via belt drive.

3. The robot welding fixture according to claim 2, characterized in that: The drive assembly has a fixing plate (10) fixedly connected to the positioning plate (2) and a PLC controller (15) mounted on the clamping block (5). The motor is fixedly connected to the fixed plate (10), the PLC controller (15) is electrically connected to the motor, the power output shaft (12) of the motor is connected to the first pulley (13), the middle part of the bidirectional screw (7) is fixedly connected to the second pulley (9), and a transmission belt (14) is connected between the first pulley (13) and the second pulley (9).

4. A robotic welding fixture according to claim 3, characterized in that: A vision sensor (16) is fixedly connected to the top wall of the clamping block (5), and a pressure sensor patch (17) is fixedly connected to the inner wall of the clamping block (5). Both the vision sensor (16) and the pressure sensor patch (17) are electrically connected to the PLC controller (15).

5. A robotic welding fixture according to any one of claims 1-4, characterized in that: The motor is a servo motor (11).

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