Robot spot welding workstation

Abstract

The utility model relates to a robot spot welding workstation which comprises a base, a spot welding robot, a visual detection device and a nondestructive detection device, a rotating disc is arranged on the base, the rotating disc and the base are arranged in a rotating mode in the vertical direction, and a clamp used for installing a workpiece to be machined is arranged on the rotating disc; and the spot welding robot, the visual inspection device and the nondestructive inspection device are sequentially arranged around the turntable. The robot spot welding work station has the effects that the automation efficiency of the robot spot welding work station is improved, and high-quality, high-efficiency and low-labor-intensity automatic production is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of robot welding, and in particular to a robot spot welding workstation. Background Art

[0002] Spot welding is a high-speed and economical connection method that welds individual points on the contact surface of the weldment at the joint; it is suitable for manufacturing stamped and rolled thin plate components with a thickness of less than 3mm and can be overlapped, joints do not require airtightness. Welding robots are welding equipment that can be automatically controlled by preset programs and are widely used in the current industrial processing and production fields.

[0003] The spot welding workstation is a large welding equipment composed of a workbench, fixtures and welding robots. However, whether it can provide a higher automation efficiency and realize an automated production system with high quality, high efficiency and low labor intensity is also a problem that needs to be improved in enterprise production. Summary of the invention

[0004] In order to improve the automation efficiency of a spot welding workstation, the present application provides a robot spot welding workstation.

[0005] The present application provides a robot spot welding workstation adopting the following technical solution:

[0006] A robot spot welding workstation comprises a base, a spot welding robot, a visual inspection device and a non-destructive inspection device. A turntable is arranged on the base, and the turntable and the base are arranged to rotate around a vertical direction. A tooling fixture is arranged on the turntable, and the spot welding robot, the visual inspection device and the non-destructive inspection device are arranged around the turntable in sequence.

[0007] By adopting the above technical solution, the staff will install the workpiece to be processed that needs spot welding on the tooling fixture, the turntable drives the fixture to rotate to the spot welding robot station, the spot welding robot spot welds the workpiece to be processed, and then the turntable drives the fixture to pass the visual inspection device and the non-destructive testing device for inspection. After the inspection is qualified, the staff can directly remove the qualified workpiece that has been spot welded from the fixture. If the inspection fails, the turntable can drive the fixture back to the spot welding robot station for re-spot welding.

[0008] Preferably, a system control device is also provided in the robot spot welding workstation, and the base, spot welding robot, visual inspection device, and nondestructive inspection device are all connected to the system control device by signal. The robot spot welding workstation also includes a slag removal device, and the slag removal device is connected to the system control device by signal.

[0009] By adopting the above technical solution, the slag removal device can remove the welding slag on the working surface after the spot welding operation is completed, thereby reducing the possibility of detection errors caused by the visual inspection device and the non-destructive testing device due to the welding slag, which helps to improve the work efficiency of the robot spot welding workstation.

[0010] Preferably, the slag discharge device comprises an air duct, and the air outlet of the air duct is located on one side of the clamp.

[0011] By adopting the above technical solution, the air duct can blow the welding slag off the surface of the workpiece after spot welding, thereby reducing the damage of the slag removal device to the spot welding operation surface.

[0012] Preferably, a baffle is further provided on the clamp, and the baffle and the air outlet are respectively arranged on both sides of the clamp, and a material receiving hopper is provided on the lower side of the clamp, and the material receiving hopper is arranged between the baffle and the clamp.

[0013] By adopting the above technical solution, the baffle helps to stop the welding slag blown out of the air duct, and the welding slag falls into the receiving hopper, which helps to reduce the impact of the welding slag on the robot spot welding workstation.

[0014] Preferably, the spot welding robot is also provided with a cooling device.

[0015] By adopting the above technical solution, the cooling device helps to reduce or eliminate the damage of the heating device during spot welding, prolongs the service life of the equipment, and reduces the frequency of performance degradation.

[0016] Preferably, the cooling device comprises a cooling tower, a cooling pipe is connected to the cooling tower, the spot welding robot comprises a welding gun, a side of the welding gun close to the spot welding robot body is a hollow structure, and the cooling pipe is connected to the hollow structure of the welding gun.

[0017] By adopting the above technical solution, in high-efficiency operation, the cooling pipe can cool down the welding gun in time, which helps to reduce or eliminate the damage of heating components during spot welding, and prolong the service life of the equipment or the frequency of performance degradation.

[0018] Preferably, the clamp is detachably arranged on the turntable, and a plurality of the clamps are arranged on the turntable.

[0019] By adopting the above technical solution, multiple fixtures can be installed with multiple workpieces to be processed, which can correspond to multiple workstations at the same time, thereby further improving the working efficiency of the robot spot welding workstation.

[0020] In summary, the present application includes at least one of the following beneficial technical effects:

[0021] 1. With the help of the spot welding robot, visual inspection device and non-destructive testing device set up in sequence, it helps to improve the automation efficiency of the robot spot welding workstation and realize high-quality, high-efficiency and low-labor-intensity automated production;

[0022] 2. With the help of slag discharge device and cooling device, it helps to further improve the working efficiency and product qualification rate of the robot spot welding workstation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of a robot spot welding workstation mainly embodied in an embodiment of the present application;

[0024] Figure 2 It is a structural schematic diagram of a slag discharge device mainly embodied in an embodiment of the present application.

[0025] Figure numerals: 1. base; 11. turntable; 111. fixture; 2. spot welding robot; 21. welding gun; 3. visual inspection device; 4. non-destructive inspection device; 5. slag discharge device; 51. air duct; 52. baffle; 53. hopper; 6. cooling device; 61. cooling pipe. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-2 This application is described in further detail.

[0027] The embodiment of the present application discloses a robot spot welding workstation.

[0028] See also Figure 1-2 The robot spot welding workstation includes a base 1, a turntable 11 is arranged on the base 1, and a driving device is also arranged on the base 1. The driving device is driven by a motor, and the motor drives the turntable 11 to rotate clockwise around the vertical direction on the base 1. A spot welding robot 2, a cooling device 6, a slag removal device 5, a visual inspection device 3 and a non-destructive testing device 4 are arranged in sequence around the turntable 11 in the clockwise direction. The robot spot welding workstation also includes a system control device, and the driving device, the spot welding robot 2, the cooling device 6, the slag removal device 5, the visual inspection device 3 and the non-destructive testing device 4 are all connected to the system control device by signal. The system control device can be a PLC controller. Five fixtures 111 are arranged in a circle around the vertical direction on the turntable 11.

[0029] In actual production, the staff fixes the workpiece to be processed on the fixture 111, and the fixture 111 drives the workpiece to be processed through the spot welding robot 2 for spot welding. The staff continues to fix another workpiece to be processed on the next fixture 111. After the spot welding is completed, the system control device sends a forward signal, and the drive device receives the forward signal to drive the turntable 11 to rotate, so that the first fixture 111 passes through the slag removal device 5 to clean the welding slag, and the workpiece to be processed on the second fixture 111 passes through the spot welding robot 2 for spot welding. By analogy, a high-efficiency spot welding operation can be achieved.

[0030] After the workpiece on the fixture 111 is deslagging, the turntable 11 drives the workpiece to pass the inspection of the visual inspection device 3 and the non-destructive inspection device 4. If the inspection is qualified, the staff will remove the qualified workpiece from the fixture 111; if the inspection is unqualified, the system control device controls the motor to rotate the turntable 11 in the opposite direction, and the unqualified workpiece rotates back to the spot welding robot 2 station to perform the spot welding operation again. In this way, high-quality spot welding operations can be achieved.

[0031] The spot welding robot 2 includes a welding gun 21, and the side of the welding gun 21 close to the spot welding robot 2 is a hollow structure. The cooling device 6 includes a cooling tower and a cooling pipe 61. The hollow structure of the welding gun 21 is connected to the cooling tower through the cooling pipe 61. During the spot welding operation, the coolant flows through the welding gun 21, taking away the excess heat of the welding gun 21, thereby helping to reduce the problem of the welding quality being affected by the excessive heat of the welding gun 21, so that the spot welding robot 2 can operate with high quality, and the service life of the welding gun 21 can also be increased.

[0032] See also Figure 2 The slag removal device 5 includes an air duct 51, the air outlet of the air duct 51 is located on one side of the fixture 111, and a baffle 52 is also provided on the other side of the fixture 111. A receiving hopper 53 is also provided between the baffle 52 and the fixture 111. The air outlet blows the welding slag generated during the welding operation toward the baffle 52, which is blocked by the baffle 52 and the welding slag falls into the receiving hopper 53. When there are pollutants on the surface of the welding workpiece, the pollutants evaporate or volatilize during the welding process to form welding slag. At the same time, welding slag will be generated when the welding material is overheated and difficult to cool or solidify. In the subsequent visual inspection and non-destructive inspection, the welding slag will affect the inspection results, so timely cleaning of the welding slag can also improve the work quality.

[0033] The visual inspection device 3 includes an industrial camera, which takes a picture of the workpiece after spot welding and compares it with a standard workpiece picture, thereby achieving the effect of visual inspection by workers in general spot welding operations. The non-destructive testing device 4 includes an ultrasonic detector, which uses ultrasonic reflection method to detect the spot welding part.

[0034] The implementation principle of a robot spot welding workstation in the embodiment of the present application is as follows: the staff installs the workpiece to be processed on the fixture 111, the turntable 11 drives the fixture 111 to perform spot welding through the spot welding robot 2, the staff installs another workpiece to be processed on the next fixture 111, the turntable 11 drives the fixture 111 to rotate, the first fixture 111 passes through the slag removal device 5 to clean the welding slag, the second fixture 111 passes through the spot welding robot 2 to perform electric welding, the staff continues to install the workpiece to be processed on the third fixture 111, and the first fixture 111 passes through the visual inspection device 3 and the non-destructive inspection device 4 in turn. When the workpiece on the first fixture 111 is qualified, the staff can remove the workpiece, and so on to achieve automated operation. In this way, a certain degree of automated operation is achieved, and the work efficiency and work quality of the robot workstation are improved.

[0035] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. Robot spot welding workstation, characterized in that, The invention comprises a base (1), a spot welding robot (2), a visual inspection device (3) and a non-destructive inspection device (4); the base (1) is provided with a turntable (11); the turntable (11) is arranged on the base (1) to rotate around a vertical direction; the turntable (11) is provided with a fixture (111) for mounting a workpiece to be processed; the spot welding robot (2), the visual inspection device (3) and the non-destructive inspection device (4) are arranged in sequence around the turntable (11).

2. The robot spot welding workstation according to claim 1, characterized in that: The robot spot welding workstation is also provided with a system control device, and the base (1), the spot welding robot (2), the visual inspection device (3), and the non-destructive inspection device (4) are all connected to the system control device by signals. The robot spot welding workstation also includes a slag removal device (5), and the slag removal device (5) is connected to the system control device by signals.

3. The robot spot welding workstation according to claim 2, characterized in that: The slag discharge device (5) comprises an air duct (51), and an air outlet of the air duct (51) is located on one side of the clamp (111).

4. The robot spot welding workstation according to claim 3, characterized in that: The clamp (111) is further provided with a baffle (52), the baffle (52) and the air outlet are respectively arranged on both sides of the clamp (111), and a material receiving hopper (53) is arranged on the lower side of the clamp (111), and the material receiving hopper (53) is arranged between the baffle (52) and the clamp (111).

5. The robot spot welding workstation according to claim 1, characterized in that: The spot welding robot (2) is also provided with a cooling device (6).

6. The robot spot welding workstation according to claim 5, characterized in that: The cooling device (6) comprises a cooling tower, a cooling pipe (61) is connected to the cooling tower, the spot welding robot (2) comprises a welding gun (21), a side of the welding gun (21) close to the main body of the spot welding robot (2) is a hollow structure, and the cooling pipe (61) is connected to the hollow structure of the welding gun (21).

7. The robot spot welding workstation according to claim 1, characterized in that: The clamp (111) is detachably arranged on the turntable (11), and a plurality of the clamps (111) are arranged on the turntable (11).

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