Common problems in welding robot welding process

The welding effect of robots is affected by many factors. Many customers encounter various problems before becoming proficient in using welding robots. These problems are generally caused by improper operation or unsuitable robot settings, and can be resolved with appropriate adjustments. Below, we'll review some common problems encountered during the use of welding robots and their solutions.

I. Unsuccessful Arc Ignition During Welding

1. Arc Not Yet Ignited

Cause: The program lacks a corresponding arc initiation command before executing the arc termination command.

Solution: Check if an extra arc termination command has been added or an extra arc initiation command has been added.

2. Arc Initiation Failed, Signal Detection Error

Troubleshooting method:

1) Check the welding interruption time setting on the parameter page. Generally, a time setting of 5000ms is appropriate.

2) Check if the welding machine signal is successfully transmitted to the system.

3) Check if the workpiece is grounded.

3. Arcing and Wire Breakage

Causes:

1) Current and voltage mismatch

Solution: We need to set appropriate current and voltage according to the actual thickness of the workpiece and the welding machine.

2) Welding wire length is too long.

Solution: Generally, the length of the welding wire extension should be 10 to 15 times the diameter of the welding wire. Select an appropriate welding wire length according to the diameter of the welding wire.

4. Automatic arc extinction occurs after arc ignition.

Troubleshooting: Check if there is a problem with the parameter time setting and check if the welding torch has moved.

II. Arc interruption occurs during welding.

Causes:

1. The welding wire does not touch the workpiece, triggering an arc interruption alarm.

Solution: Readjust the position of the welding wire and the workpiece to ensure full contact during welding. (However, the wire should not be too close to the workpiece, as this may cause burn-through.)

2. An improper welding path causes the welding torch to collide and automatically rise.

Solution: Reset the welding path.

3. Poor contact between the positive and negative electrodes of the welding machine.

Solution: Check the wiring of the positive and negative electrodes.

III. Reasons for arc termination failure after welding:

1. Arc termination failure due to signal detection error.

Cause: The welding machine did not receive a signal from the robot, causing the robot's arc-ending to fail.

Troubleshooting:

(1) Check if the setting parameters are reasonable.

(2) Check the IO signals, and whether the arc-ending I-point signal is abnormal. If the I-point signal always shows ON...

(3) Check if there is a short circuit in the circuit, and whether the ground wire is connected abnormally.

2. No arc-ending command was set after arc initiation.

Cause: When this alarm appears on the teach pendant, check if the arc termination command was forgotten.

Solution: Add an arc termination command after the arc initiation command in the program.

This article mainly introduces issues related to arc initiation, arc termination, and arc discontinuation during the welding process of welding robots. Users can refer to the solutions if they encounter such problems. If the problem cannot be resolved, please seek assistance from JUGAO technical personnel.

The welding robot is an automated robot that integrates multiple welding functions such as gas shielded welding, argon arc welding, plasma cutting, and laser welding. It boasts high flexibility, strong adaptability, high welding efficiency, and stable welding quality, and can be widely used in various fields, such as machinery manufacturing, automobile manufacturing, precision electronics, and coal mining.