What types of sensors are there for welding robots (straight coordinate robots and articulated arm robots)?

What types of welding robots are there? In the field of automated welding, sensors play a relatively important role. Welding robots are equipped with multiple sensors that can monitor the welding process in real time. The sensors provide the necessary welding information, and the operator can correctly perform related operations based on the information. This reflects the automation and standardization of welding. Now let me introduce you to the sensors of welding robots.

Welding sensors are divided into internal sensors and external sensors. Internal sensors can monitor the operation of the robot body. In case of abnormal situations, they will promptly feedback to the control system and stop the robot immediately to protect the robot body from damage. External sensors will monitor welding quality issues. If welding defects occur, the handheld teach pendant will display a warning and the operator will take corrective measures.

Common sensors for welding robots:

1. Visual sensor: The visual sensor is equivalent to the eyes of the welding robot. The visual sensor is divided into two-dimensional and three-dimensional. The two-dimensional visual sensor can detect the movement state of the parts, and the robot adjusts its movement posture according to the movement state of the parts; the three-dimensional visual sensor has laser scanners at different angles to detect objects and create three-dimensional images to analyze better movements.

2. Mechanical sensor: The mechanical sensor mainly senses the force of the end effector. The mechanical sensor is located between the end effector and the fixture. When the end sensor is assembling and welding, the mechanical sensor will monitor the force to prevent excessive force and impose certain restrictions.

3. Weld seam tracking sensor: The welding robot has the function of automatic weld seam tracking. It automatically detects and adjusts the position of the welding gun during the welding process, so that the welding gun can control the position of the weld seam, improve the welding accuracy, and effectively stabilize the welding quality.

4. Temperature sensors are one of the most commonly used sensors in welding automation. They can measure temperature changes during the welding process and make real-time adjustments based on demand. There are many types of temperature sensors, including thermocouples, RTDs, and wire sensors. These sensors can provide accurate temperature data to help control welding parameters and prevent overheating or overcooling.

5. Contact sensors: Contact sensors are used to detect contact force and displacement during welding. They can measure the contact force between the welding gun or welding wire and the workpiece to ensure a good welding connection. Contact sensors can also monitor the displacement during welding to help adjust the welding position and posture. Common contact sensors include force sensors, displacement sensors and.

6. Laser displacement sensor: Laser displacement sensor is a commonly used sensor in welding automation. It uses a laser beam to measure the displacement and shape change of the weld or workpiece surface during welding. The laser displacement sensor can monitor the displacement, deformation and dimensional error in the welding process in real time by measuring the change in the distance between the laser beam and the weld or workpiece. This helps to achieve precise welding position and weld control to improve welding quality and consistency.

7. Sensor: Current sensor is used to measure the size and change of welding current. During welding, the stability of current is crucial to welding quality. Current sensor can monitor the fluctuation and abnormality of current, and help to adjust welding parameters in time to ensure good welding connection.

In addition, the welding robot also has collision monitoring sensors, motion sensors, quality sensors, etc. These sensors protect the work of the welding robot, increase the welding speed and stabilize the quality.