A laser welding system for turbine casings

Abstract

A kind of for turbine shell laser welding system belongs to turbine shell laser welding equipment technical field;Including turbine shell, the side of the turbine shell is provided with valve cover, the side of the valve cover is provided with rocker arm by welding connection, and the welding place of rocker arm and valve cover is provided with the welding ring of rocker arm and turbine shell valve cover handle, the side of the turbine shell is provided with the auxiliary mechanical clamp for clamping it, the side of the auxiliary mechanical clamp is provided rocker arm detection camera;The utility model can avoid the welding quality problem caused by the position deviation of rocker arm or the clamping error rocker arm by increasing rocker arm detection camera and LWM system, can detect process exception in production environment and feedback simultaneously, so that turbine shell welding qualification rate is increased from 92% to 99%, and welding position center can be detected by setting welding positioning camera simultaneously, to determine correct welding position.

Description

Technical Field

[0001] This utility model belongs to the technical field of turbine housing laser welding equipment, specifically relating to a laser welding system for turbine housings. Background Technology

[0002] Turbine housing is a typical precision part assembled and welded from machined parts and thin-walled sheet metal forming parts. During the production of turbine housing, the rocker arm is mainly welded to the valve cover handle of the turbine housing, which is often done by laser welding system. The loading of turbine housing is usually done by operators.

[0003] During the operation of laser welding systems, varying operator skill levels, misaligned rocker arm positions, or incorrect rocker arm clamping can all lead to weld instability and compromised weld quality. The former results in mismatch between the rocker arm and the turbine housing, rendering parts unusable. These defects cause the current turbine housing welding pass rate to hover around 92%-95%, becoming a key bottleneck hindering industrial upgrading. Utility Model Content

[0004] The present invention aims to solve the technical problems existing in the prior art and provide a laser welding system for turbine housings.

[0005] The above-mentioned technical problems of this utility model are mainly solved by the following technical solution: a laser welding system for turbine housing, including a turbine housing, a valve cover is provided on one side of the turbine housing, a rocker arm is provided on the side of the valve cover by welding, and a welding ring is provided at the welding joint of the rocker arm and the valve cover handle of the turbine housing. An auxiliary mechanical clamp is provided on one side of the turbine housing to hold it, a rocker arm detection camera is provided on one side of the auxiliary mechanical clamp, the auxiliary mechanical clamp is transported by a material conveying device, the material conveying device transports the auxiliary mechanical clamp to the loading position and the welding position, a laser system is provided at the welding position, and a dust removal system is provided on one side of the laser system. A welding positioning camera is provided at the output end of the laser system.

[0006] Preferably, the laser system includes a laser, a welding head, and an auxiliary robotic arm. The welding head is mounted on the auxiliary robotic arm and is connected to the laser via an optical fiber for control. The welding positioning camera is mounted on the auxiliary robotic arm and is used to detect the center of the welding position and determine the correct welding position.

[0007] Preferably, the laser system has a built-in LWM system installed on the auxiliary robotic arm of the laser system for monitoring, analyzing and confirming welding quality.

[0008] Preferably, the material conveying device, laser system, dust removal system, auxiliary mechanical fixture, rocker arm inspection camera, and welding positioning camera are controlled by a PLC5.

[0009] The beneficial effects of this utility model are:

[0010] By adding a rocker arm inspection camera and LWM system, welding quality problems caused by rocker arm position deviation or incorrect clamping can be avoided. At the same time, it can detect process abnormalities in the production environment and provide feedback, thereby increasing the turbine housing welding qualification rate from 92%-95% to 99%. In addition, by setting up a welding positioning camera, it can also be used to detect the center of the welding position and determine the correct welding position. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of a laser welding system for turbine housings according to the present invention;

[0012] Figure 2 This is a flowchart of a laser welding system for turbine housings according to this utility model;

[0013] Figure 3 This is a schematic diagram of a turbine housing from the front of this utility model;

[0014] Figure 4 This is a schematic diagram of a turbine housing from the side of this utility model.

[0015] In the diagram: 1. Material conveying device; 2. Laser system; 3. Dust removal system; 4. Auxiliary mechanical fixture; 5. PLC; 6. Rocker arm inspection camera; 7. Welding positioning camera; 8. LWM system; 9. Rocker arm; 10. Valve cover; 11. Turbine housing; 12. Welding ring of rocker arm and turbine housing valve cover handle. Detailed Implementation

[0016] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0017] Example: A laser welding system for turbine housings, such as Figure 1 and Figure 4As shown, the device includes a turbine housing 11, a valve cover 10 on one side of the turbine housing 11, a rocker arm 9 connected by welding on the side of the valve cover 10, and a welding ring 12 connecting the rocker arm and the valve cover 10 at the welding point. An auxiliary mechanical clamp 4 for holding the turbine housing 11 is provided on one side of the turbine housing 11, and a rocker arm detection camera 6 is provided on one side of the auxiliary mechanical clamp 4. The auxiliary mechanical clamp 4 is transported by a material conveying device 1, which transports the auxiliary mechanical clamp 4 to the loading position and the welding position. A laser system 2 is provided at the welding position, and a dust removal system 3 is provided on one side of the laser system 2. A welding positioning camera 7 is provided at the output end of the laser system 2.

[0018] Laser system 2 includes a laser, a welding head, and an auxiliary robotic arm. The welding head is mounted on the auxiliary robotic arm and is connected to the laser via optical fiber for control. Welding positioning camera 7 is mounted on the auxiliary robotic arm to detect the center of the welding position and determine the correct welding position. Laser system 2 has a built-in LWM system 8, which is mounted on the auxiliary robotic arm of laser system 2 for monitoring, analyzing, and confirming welding quality.

[0019] The material conveying device 1, laser system 2, dust removal system 3, auxiliary mechanical fixture 4, rocker arm inspection camera 6, and welding positioning camera 7 are controlled by a PLC55.

[0020] Laser system 2 emits light, welding a circular pattern with a power of 1700W and a speed of 75mm / s.

[0021] The principle of this utility model: After manual loading of the material into the auxiliary mechanical fixture 4, the rocker arm detection camera 6 detects the rocker arm 9. If the detection is NG, the rocker arm 9 needs to be manually inspected. The rocker arm detection camera 6 detects the rocker arm 9 by judging whether the numbers and models on the rocker arm 9 are the same, whether the outline of the rocker arm 9 is the same, and whether the color of the rocker arm 9 is the same. Finally, it is judged as NG or OK. After the detection is OK, the PLC5 controls the material conveying device 1 to start and send the auxiliary mechanical fixture 4 to the welding position. Then, the PLC5 controls the auxiliary robot to move to the welding position again. The welding positioning camera 7 detects the center of the welding ring 12 between the rocker arm and the turbine housing valve cover handle. If it is correct, feedback is given. The laser system 2 is positioned correctly and emits light for welding. PLC 5 transmits signals to the auxiliary robot in laser system 2, and simultaneously activates LWM system 8 to monitor welding quality. Dust removal system 3 is activated. If LWM system 8 determines that the welding quality is qualified, the welded turbine housing 11 is removed. PLC 5 controls the other equipment to stop working and simultaneously controls the material conveying device 1 to transport the auxiliary mechanical clamp 4 carrying the turbine housing 11 to the unloading station for unloading. If LWM system 8 determines that the welding quality is unqualified, the auxiliary mechanical clamp 4 is locked, and the process personnel need to analyze the reasons for the unqualified before unloading.

[0022] Finally, it should be noted that the above embodiments are merely representative examples of this utility model. Obviously, this utility model is not limited to the above embodiments and many variations are possible. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model should be considered to fall within the protection scope of this utility model.

Claims

1. A laser welding system for turbine housings, comprising a turbine housing (11), characterized in that: A valve cover (10) is provided on one side of the turbine housing (11). A rocker arm (9) is provided on the side of the valve cover (10) by welding. A welding ring (12) is provided at the welding point of the rocker arm (9) and the valve cover (10) to connect the rocker arm and the valve cover handle of the turbine housing. An auxiliary mechanical clamp (4) is provided on one side of the turbine housing (11) to hold it. A rocker arm detection camera (6) is provided on one side of the auxiliary mechanical clamp (4). The auxiliary mechanical clamp (4) is transported by a material conveying device (1). The material conveying device (1) transports the auxiliary mechanical clamp (4) to the loading position and the welding position. A laser system (2) is provided at the welding position. A dust removal system (3) is provided on one side of the laser system (2). A welding positioning camera (7) is provided at the output end of the laser system (2).

2. The laser welding system for turbine housings according to claim 1, characterized in that: The laser system (2) includes a laser, a welding head, and an auxiliary robot arm. The welding head is mounted on the auxiliary robot arm and is connected to the laser via an optical fiber for control. The welding positioning camera (7) is mounted on the auxiliary robot arm and is used to detect the center of the welding position and determine the correct welding position.

3. The laser welding system for turbine housings according to claim 2, characterized in that: The laser system (2) has a built-in LWM system (8) installed on the auxiliary robotic arm of the laser system (2) for monitoring, analyzing and confirming welding quality.

4. The laser welding system for turbine housings according to claim 1, characterized in that: The material conveying device (1), laser system (2), dust removal system (3), auxiliary mechanical fixture (4), rocker arm detection camera (6), and welding positioning camera (7) are controlled by a PLC (5).

Images