US 12,285,826 B2
Meshing structure for plate welding and tack-free welding device and method
Ang Ji, Jiangsu (CN); Can Wang, Jiangsu (CN); and Liping Zhang, Jiangsu (CN)
Assigned to JIANGSU XCMG CONSTRUCTION MACHINERY RESEARCH INSTITUTE LTD., (CN)
Appl. No. 17/802,005
Filed by JIANGSU XCMG CONSTRUCTION MACHINERY RESEARCH INSTITUTE LTD., Jiangsu (CN)
PCT Filed Oct. 28, 2021, PCT No. PCT/CN2021/126880
§ 371(c)(1), (2) Date Feb. 2, 2023,
PCT Pub. No. WO2023/005025, PCT Pub. Date Feb. 2, 2023.
Claims priority of application No. 202110872200.6 (CN), filed on Jul. 30, 2021.
Prior Publication US 2024/0217037 A1, Jul. 4, 2024
Int. Cl. B23K 37/00 (2025.01); B23K 26/38 (2014.01); B23K 28/02 (2014.01)
CPC B23K 37/00 (2013.01) [B23K 26/38 (2013.01); B23K 28/02 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A welding method for straight welds with a tack-free welding device which comprises a connecting frame (1), a welding gun (2-1), and a cutting mechanism, wherein the welding gun (2-1) is fixed on the connecting frame (1), the cutting mechanism is fixedly connected to the connecting frame (1) through a pose adjustment mechanism (3), the method comprising the following steps:
cutting edges of two plates according to a form of a meshing structure for restraining the two plates from moving relative to each other after the two plates are assembled and meshed together;
assembling and meshing the cut plates, and fixing the cut plates by performing tack welding on ends of a weld, or by randomly performing tack welding on the meshing structures; or, fixing a rigid backing on back sides of the meshing structures through clamps or by performing tack welding on contact positions of edges of the rigid backing and the meshing structures;
adjusting a position of the welding gun (2-1) and a position of the cutting mechanism until the welding gun (2-1) and the cutting mechanism are aligned with a center of the weld; and
enabling the cutting mechanism and the welding gun (2-1) to move along the weld, removing the meshing structures by the cutting mechanism, and then performing, by the welding gun (2-1), welding at the weld in a non-contacted area, from an initial point of the welding to a position of the cutting mechanism, formed after the meshing structures are removed by the cutting mechanism.