Metal sandwich plate laser welding mechanical type pressurizing device and use method

Abstract

The invention discloses a metal sandwich plate laser welding mechanical type pressurizing device and a use method. The metal sandwich plate laser welding mechanical type pressurizing device comprisesa mechanical arm, a laser head clamping part, a laser head, a laser beam, a horizontal bending clamping part and a pressurizing mechanism. A pressurizing rolling wheel comprises a traveling wheel, a wheel seat and a baffle. The metal sandwich plate laser welding mechanical type pressurizing device and the use method have the beneficial effects that adjustment is simple and flexible, use is convenient, cost is low, work is stable and reliable, and service life is long; additional mechanical pressure and laser welding can be conducted synchronously, the magnitude and acting position of the additional mechanical pressure can be selected precisely according to welding parameters and plate thickness, the effect that the additional mechanical pressure is loaded to a laser beam acting position area is ensured, gaps are restrained effectively, and welding quality is ensured, the welding efficiency of a metal sandwich plate is improved; and the metal sandwich plate laser welding mechanical typepressurizing device and a fiber laser driven by a six-axis linkage robot can be operated integrally in a linkage mode, and the advantages such as convenient maintenance and low cost are achieved.

Description

technical field [0001] The invention relates to the field of material processing equipment, in particular to a mechanical pressurizing device for laser welding of metal sandwich plates and a use method thereof. Background technique [0002] Laser-welded metal sandwich panels are a new type of light-weight and high-strength structure, which has broad application prospects in the fields of ships, aerospace and transportation tools. Metal sandwich panels often use thinner (generally 1-3mm) and larger panels, which are easily affected by the plate shape and welding deformation during the laser welding process, resulting in a certain gap between the web and the panel. The existence of the gap often leads to the collapse of the molten pool and the defects of pores during the welding process. Even when the gap is too large, the face plate and the core plate cannot be connected, resulting in the failure of the metal sandwich plate welding. Therefore, the development of a pressure d...

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Problems solved by technology

[0003] Fiber laser has the advantages of high flexibility, convenient maintenance and low cost, and has been widely used. Generally, it is driven by a six-axis linkage robot, and the load of the robotic arm is mostly 30-60kg. The traditional gas laser processing system uses CNC machine tools. For the control system, the clamping end of the laser head has a high bearing capacity and cannot be directly connected to the mechanical arm of the six-axis linkage robot. Due to the large size of the metal sandwich plate and many welds, the workload of the fixed-point pressurization device is large and difficult To ensure the welding quality, it is necessary to develop a pressure device integrated with the robot and laser head for laser welding of metal sandwich plates

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