A kind of welder of Novel convex weldering grounding screwTechnical field
This utility model relates to the welder of a kind of Novel convex weldering grounding screw, and specifically one can improve lifeProduct efficiency and the welder that welding quality is high, grounding screw does not has ablation.
Background technology
The device of traditional projection welding grounding screw is as it is shown in figure 1, contain electrode body 3, electrode stem 4, firm banking 5, electricPole main body 3 is provided with groove 6, and the lower end of electrode stem 4 is arranged on firm banking 5.When welding, grounding screw 7 is put into electrodeIn the groove of main body 3, the face of cylinder, outside of grounding screw 7 directly contacts with electrode body 3, and work is put in the upper end of grounding screw 7Welding is started after part W.Although this welder technique is simple, but has the disadvantage that
1, the face of cylinder, outside of grounding screw directly contacts with electrode body, owing to the face of cylinder, outside of grounding screw is coldUpsetting technological forming, dimensional discrepancy is relatively big, and after welding, grounding screw expanded by heating deforms, and takes out difficulty；
2, the face of cylinder, outside of grounding screw contacts with electrode body, owing to contact surface is excessive, for ensureing welding quality, needsArranging the welding of high electric current, after welding, the nut of grounding screw coordinates face ablation serious with stud, and impact uses.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, it is provided that a kind of Novel convex welding groundThe welder of stud, this welder piece installing/pickup is easy, and production efficiency is high, also will not be to the spiral shell of grounding screw after weldingMother causes ablation with the face that coordinates of stud.
The technical scheme that this utility model solves technical problem is as follows: the welder of a kind of Novel convex weldering grounding screw,Containing electrode body, electrode stem, firm banking, electrode body is provided with groove, and the lower end of electrode stem is arranged on firm banking, itsBeing structurally characterized in that and be provided with location steel bushing and insulation sleeve in the groove of electrode body, location steel bushing is with insulation sleeve interference fit evenConnecing, insulation sleeve is connected with electrode body interference fit.
Most preferred embodiment of the present utility model is that described electrode body is threadeded with electrode stem employing.
This utility model is owing to being provided with location steel bushing and insulation sleeve, during use, grounding screw in the groove of electrode bodyWith steel bushing location, location, only its lower surface contacts with electrode body.Owing to side has insulation sleeve to insulate, location steel bushing only risesPositioning action, thus steel bushing and grounding screw are designed to matched in clearance, conveniently pick and place grounding screw；The additionally lower end of grounding screwFace contacts with electrode body, and contact surface is greatly reduced, and uses little electric current input just can reach welding quality requirement, to ground connection spiral shellPost does not results in ablation yet.This utility model is simple to operate, and work efficiency is high, does not has ablation to grounding screw, and put after weldingPart/pickup is easy, it is adaptable to the welding of all grounding screws.
Accompanying drawing explanation
Fig. 1 is that the welder of tradition projection welding grounding screw uses status architecture schematic diagram.
Fig. 2 is the structural representation of this utility model embodiment.
Fig. 3 is the use status architecture schematic diagram of this utility model embodiment.
Detailed description of the invention
With specific embodiment, this utility model is done further detailed description below in conjunction with the accompanying drawings.
As seen from Figure 2, this utility model contains electrode body 3, electrode stem 4, firm banking 5, and electrode body 3 is provided withGroove 6, described electrode body 3 uses with electrode stem 4 threadeds, and the lower end of electrode stem 4 is arranged on firm banking 5,Being provided with location steel bushing 1 and insulation sleeve 2 in the groove 6 of electrode body 3, location steel bushing 1 is connected with insulation sleeve 2 interference fit, insulationSet 2 is connected with electrode body 3 interference fit.
As seen from Figure 3, this utility model use time, grounding screw 7 with location steel bushing 1 position, its lower surface andElectrode body 3 contacts, and the upper end of grounding screw 7 starts welding after putting workpiece W.Owing to side has insulation sleeve 2 to insulate, position steelOverlap 1 to play the role of positioning, thus location steel bushing 1 is designed to matched in clearance with grounding screw 7；The additionally lower surface of grounding screw 7Contacting with electrode body 3, contact surface is greatly reduced, and uses little electric current input just can reach welding quality requirement, to ground connection spiral shellPost does not results in ablation yet.It can thus be seen that this utility model is simple to operate, picking and placeing workpiece easy, production efficiency is high, dockingGround stud does not results in ablation yet.