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脉冲堆焊焊头的焊丝给送依焊丝消耗量而自动调节的原理如图1所示。其中主要部分是在同一轴上摆动的杠杆1和2。当偏心轮4旋转,通过弹簧5的作用,使杠杆产生振动。利用两个单面活动的夹子6和7给送焊丝,其中一个夹子是装在杠杆的上臂,另一个固定在机头外壳上。焊丝在夹子中从被弹簧拉紧的瓜子尖端和平面中间通过。当尖端与焊丝的倾角选得正确时,瓜子只容许它们朝一个方向运动。因此,随着杠杆1的振动,焊丝被夹紧并沿着箭头所指的方向推移。焊丝的平均给送速度决定于振动的振幅和频率。沿АБ弧线弯曲的焊丝,从下面杠杆臂之间的空隙沿着平面8通过(杠杆2的上臂在图1中略)。焊丝通过
Pulse welding head welding wire to send according to consumption of wire automatically adjust the principle shown in Figure 1. The main part is the levers 1 and 2 that swing on the same axis. When the eccentric wheel 4 is rotated, the lever 5 is vibrated by the action of the spring 5. The wire is fed using two single-sided clips 6 and 7, one of which is attached to the upper arm of the lever and the other to the head housing. The wire passes through the clip in the middle of the spring-tightened seed tip and plane. When the tip and the welding wire angle is selected correctly, the seeds only allow them to move in one direction. Therefore, as the lever 1 vibrates, the welding wire is clamped and pushed in the direction indicated by the arrow. The average wire feeding speed depends on the vibration amplitude and frequency. The wire bent along the АБ curve passes along the plane 8 from the space between the lower lever arms (the upper arm of the lever 2 is omitted in Figure 1). Wire passed