Structural form of welding positioner

The welding positioner is a kind of turning machine which can turn the welding parts and turn over, so that the weld on the weld is always in the position of easy to weld. The rational use of welding positioner can improve the efficiency of welding, improve the quality of welding and reduce the labor strength of the welder. At the same time, it is also one of the important technological equipment to realize the mechanization and automation of the welding process. The joint use of the welding machine can solve the problem of automatic welding of complex shape welding parts. At present, welding positioner has been widely used in engineering machinery, heavy machinery, vehicles, boilers, pressure vessels and pipes and other manufacturing industries.
Structure form of 1. welding positioner
The welding structure of the positioner can be divided into arm type, seat type, seat type and L type double rotary 4.
(1) overhangingcanopy welding positioner. Cantilever type welding structure shape positioner by rotary table, arm, inclined shaft, shaft and other major parts. The rotary table is driven by a motor for rotating at a constant speed, and installed at the end part of the arm. Inclined arm together with the rotary table through the tilt axis for a certain angle, and the shaft and can make the table around the longitudinal axis of the outriggers. The characteristic of this kind of variable position machine is that the range of change is large, the operation is flexible, and the adaptability of the process is strong. The disadvantage is poor structural stability and small load capacity. Generally below 600kg, it is suitable for flip and shift of small weldments, mostly used for arc welding and melt gas shielded arc welding.
Cantilever type welding positioner if driven by hydraulic pressure, the maximum bearing capacity can be increased to about 10T.
(2) seat type welding positioner. The seat type transformer is the most common structural form of the variable position machine. It is mainly composed of rotary table, tilting mechanism, motor drive system and machine seat. The welding parts are placed on the worktable and pressed by the matching fixture to ensure that the welding parts are not loosened when the rotary table is inclined. The rotary worktable can be driven by DC or AC motor. The speed control system can be stepless speed regulation in a wide range to meet the needs of various welding processes. The turning or tilting of rotary worktable is driven or driven directly by hydraulic motors by sector gear. The maximum inclination angle is generally in the range of 110 degrees -135 degrees, and it tilts at a constant speed. The welding parts can be locked at any angle.
This kind of welding positioner has compact structure, good stability, high bearing capacity (up to 400t), convenient movement and flexible operation.
In order to further expand the working range and applicability of the seat type welding machine, it can be designed as a lifting type. The lifting mechanism can use the motor drive column guide and the clamping roller, and the structure form of the wire rod guide rail can be adopted.
In order to improve the stability and safety of the welding positioner, the lifting and tilting mechanism of the seat welding positioner can be hydraulically driven, and its structure is more compact.
The drawback of the seat type welding positioner is that the length of the welding parts is limited. When the center of gravity distance can not exceed the specified range, when the welding positioner is required to weld the larger welding parts, the most simple solution is the combined use of driven roller frame.