55results about How to "Prevent affecting welding quality" patented technology

The utility model discloses a self-adaptive welding head assembly for laser welding of a power battery connecting piece. The self-adaptive welding head assembly comprises a cover plate, an air pressure baffle and a welding cavity. The cover plate is connected to the side portion of the welding cavity, and an air pressure cavity is formed by the cover plate and the side wall of the welding cavity. The air pressure baffle is accommodated in the air pressure cavity; a dust collection channel and an air blowing channel are constructed in the welding cavity, and the air blowing channel comprises a welding channel flowing to the welding station and at least one pressurizing channel flowing to the air pressure cavity; an opening, leading to the air pressure cavity, of the pressurization channel in the welding cavity is located above the air pressure baffle, air is blown to the air pressure cavity through the pressurization channel, downward pressure can be applied to the air pressure baffle, the air pressure baffle is tightly attached to the battery cover plate, welding slag dust is effectively prevented from splashing, and a roll core is prevented from being polluted. The utility model further discloses a dust removal device comprising the self-adaptive welding head assembly.

The present application relates to the technical field of welding, and specifically discloses a motor liquid-cooled shell welding device, which comprises a workbench, a rotating disc, an inner-outer positioning mechanism, a coaxial positioning mechanism and a pressing mechanism. The inner-outer positioning mechanism, the positioning shaft, the insert, the positioning locking assembly and the pressing mechanism are used for multi-dimensional guarantee of the concentricity of the inner cylinder, the outer cylinder, the annular plate and the welding machine from the bottom, the top and the side, so that the problems of weld offset, uneven penetration, one-side wide and one-side narrow of the welding seam of the welding machine and the like caused by the rotation centrifugal force of the inner cylinder, the outer cylinder and the annular plate are effectively avoided. Meanwhile, the pressing mechanism is provided with a plurality of circumferentially uniformly distributed pressing assemblies, which are matched with the bearing steps on the inner cylinder and the outer cylinder to realize the up-down bidirectional limiting of the annular plate, prevent the annular plate from floating due to the centrifugal force during the rotation and affect the welding quality of the welding seam, and the wear-reducing roller can prevent the annular plate from floating and radial movement due to thermal deformation without affecting the rotation of the workpiece.