Theweldingwireplateandthewireplateshaftfeedwiretrayaretheplaceswheretheweldingwiresarestored.Theweldingwiresaresuppliedbyweldingwireplates,andaredividedintoinnerwindingtypeandexternalrailingtype.Thefineweldingwireisusedintheinnerwindingtype,andthecoarsewireisusedforthesparetype.Whenweldingwires,theweldingwiresshouldbearrangedneatlyandnottobecrossedsoasnottointerferewiththewiresandaffectthenormaloperationoftheweldingwires.Theweldingwirediscshaftisalsoknownasthedeaddampingdiscshaft.Thecommonweldingwirediscshaftismostlyplasticoraluminum,weldingwireplateweldingwireshaft.Thestructureofthecorepartofthewirefeederisshownasshowninthediagram.Thedevicetakesthewirefeedingmotorandthereductiongearboxasthemainbody,andisequippedwithwirefeedingrollersandpressurizedrollers,andthepressurerollerspassthroughtherollerframeandthepressurizedhand.
Thehandleispressedtothewirefeedingwheel.Accordingtothediameteroftheweldingwire,adjustingthepressurehandlecanadjustthepressingforce.Behinditisthestraighteningmechanismofweldingwire.Itconsistsofthreerollers,andthedistancebetweenthemcanbeadjustedaccordingtotheconditionofweldingwire.Thefrontpartofthewirefeedingwheelisawireguidepart,whichiscomposedofaguidebushandanoutletguidepipe.Theweldingwireisdeliveredfromthegrooveofthewirefeedingwheel,andtheguidepipeisusedasaninlettoensurethattheweldingwireissmoothlytransferredintothewirefeedinghosefromthegrooveofthewirefeedingwheel.Inordertofixtheguidebushing,thebodyisalsoprovidedwithapressurespring.
Thewirefeedingrollerfeedwiredirectlytransfersthepowerofthewirefeedingmotortotheweldingwire.Thegreaterthewirefeedingforceofthewireis,themorestableandreliablethewiredeliveryis.Thewirefeedwheelisusuallyforgedby45steel,thediameterisgenerally30~40mm,andthehardnessofthewheelhardenedtoHRC50~55,whichincreaseswearresistance.