Welding Wire Weaving Apparatus for Submerged Arc Welding Carriage

Abstract

A welding wire weaving apparatus for a submerged arc welding carriage includes a truck running in a welding direction, a control panel controlling parameters required for welding and weaving operations, a welding wire reel mounting a welding wire thereon, a welding wire supplier supplying the welding wire to an upper part of a member to be welded, a weaver unit weaving the welding wire transversely, a supplier supporting shaft supporting the welding wire supplier at an upper part of the truck, and a weaver unit connection bar connecting the weaver unit to the supplier supporting shaft. The welding wire supplier includes a supply guiding roller, a compressive supplying roller, a welding wire guide bundle, a needle bearing, a welding wire guide bundle and an insulator formed between the needle bearing and the welding wire guide bundle.

1 . A welding wire weaving apparatus for a submerged arc welding carriage, comprising a truck running in a welding direction, a control panel controlling parameters required for welding and weaving operations, a welding wire reel mounting a welding wire thereon, a welding wire supplier supplying the welding wire to an upper part of a member to be welded, a weaver unit weaving the welding wire transversely, a supplier supporting shaft supporting the welding wire supplier at an upper part of the truck, and a weaver unit connection bar connecting the weaver unit to the supplier supporting shaft,
 wherein the welding wire supplier comprises:   a supply guiding roller connected to a shaft of a supplying motor by a shaft cap, the supply guiding roller having a V-shaped cross-sectional groove to guide therethrough supply of the welding wire to a member being welded;   a compressive supplying roller that compresses the welding wire toward the supply guiding roller;   a welding wire guide bundle integrally formed with a welding wire guide nozzle and connected to a stepwise decelerator through a tightening screw;   a needle bearing having a low frictional resistance for weaving of the welding wire, being disposed between the decelerator and a welding wire guide bundle;   an insulator formed between the needle bearing and the welding wire guide bundle to protect the supplying motor from the welding wire applied with electricity.   
   
   
       2 . The welding wire weaving apparatus according to  claim 1 , wherein, in the weaver unit, a crank block is connected to a shaft of a weaving motor performing unidirectional rotation and also connected to an LM guide block through a crank bar. 
   
   
       3 . The welding wire weaving apparatus according to  claim 1 , wherein the needle bearing is inserted between the welding wire guide bundle and the decelerator so that the welding wire guide bundle can move in lateral directions relative to the decelerator. 
   
   
       4 . The welding wire weaving apparatus according to  claim 2 , wherein the LM guide block performs longitudinal movements along an LM guide rail whereas the LM guide rail performs lateral movements in connection with the welding wire guide nozzle which serves as a path of the welding wire. 
   
   
       5 . The welding wire weaving apparatus according to  claim 1 , wherein the weaving width of the welding wire is adjusted by varying the crank block according to distances between the motor shaft and the crank bar. 
   
   
       6 . The welding wire weaving apparatus according to  claim 1 , wherein, during unidirectional rotation of the weaving motor, longitudinal movements are absorbed using the LM guide rail having a low frictional resistance whereas lateral movements are utilized in weaving the welding wire using the needle bearing. 
   
   
       7 . A welding wire weaving apparatus for a submerged arc welding carriage, comprising:
 a truck running in a welding direction, a control panel controlling parameters required for welding and weaving operations,   a welding wire reel mounting a welding wire thereon,   a welding wire supplier and weaver unit weaving the welding wire transversely and supplying the welding wire to an upper part of a member to be welded, and   a supplier supporting shaft supporting the supplier and weaver unit at an upper part of the truck, wherein the welding wire supplier unit includes a supply guiding roller connected to a shaft of a decelerator in connection with a supplying motor using a shaft cap to supply therethrough the welding wire to a member being welded, a compressive supplying roller compressing the welding wire toward the supply guiding roller, a welding nozzle connected to the decelerator to guide the welding wire passed through the supply guiding roller and the compressive supplying roller to an upper part of the member being welded and a decelerator base supporting the decelerator thereon, being connected to a supplier and weaver unit supporter connected with the supporting shaft formed on the truck through a weaving shaft pin.   
   
   
       8 . The welding wire weaving apparatus according to  claim 7 , wherein the supplier and weaver unit is mounted to a rear side of the supplier and weaver unit supporter through a weaver unit connection board,
 a rotary disc, a rotary guiding bar and a guide bar are connected successively from a shaft of a weaving motor, and   the guiding bar is also connected to the decelerator base.   
   
   
       9 . The welding wire weaving apparatus according to  claim 8 , wherein, when the rotary disc is rotated by a rotational force of the weaving motor, rotation of the rotary disc is transmitted through the rotary guiding bar and the guide bar and accordingly the welding wire weaver unit including the decelerator base weaves the welding wire with respect to the weaving shaft pin. 
   
   
       10 . The welding wire weaving apparatus according to  claim 7 , wherein the welding wire supplier unit including the welding wire supplying motor is connected to the weaver unit supporter through the weaving shaft pin, such that the welding wire can be moved forward and backward. 
   
   
       11 . The welding wire weaving apparatus according to  claim 7 , wherein a weaving width of the welding wire is controlled through adjustment of relative positions between the rotary guiding bar and the guide bar. 
   
   
       12 . The welding wire weaving apparatus according to  claim 7 , wherein a weaving angle of the welding wire can be controlled by adjusting connection angles between the supporting shaft and the supplier and weaver unit supporter or by adjusting the position of the weaving shaft pin connecting the supplier and weaver unit supporter with the decelerator base. 
   
   
       13 . The welding wire weaving apparatus according to  claim 2 , wherein the weaving width of the welding wire is adjusted by varying the crank block according to distances between the motor shaft and the crank bar. 
   
   
       14 . The welding wire weaving apparatus according to  claim 4 , wherein, during unidirectional rotation of the weaving motor, longitudinal movements are absorbed using the LM guide rail having a low frictional resistance whereas lateral movements are utilized in weaving the welding wire using the needle bearing. 
   
   
       15 . The welding wire weaving apparatus according to  claim 8 , wherein a weaving width of the welding wire is controlled through adjustment of relative positions between the rotary guiding bar and the guide bar.