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    • 2. 发明公开
    • Rotary arc-welding apparatus
    • Drehlichtbogenschweissapparat。
    • EP0135632A1
    • 1985-04-03
    • EP83305861.3
    • 1983-09-28
    • NIPPON KOKAN KABUSHIKI KAISHA
    • Sugitani, YujiKobayashi, Yukio
    • B23K9/30H01R39/64
    • B23K9/30H01R39/64
    • A nozzle (1) is rotated at high speed about its axis by a mechanism (5, 6) and has a passage (3, 10) for directing a consumable welding electrode (4) eccentrically from the center axis of the nozzle toward a groove formed between objects to be welded. A feed mechanism continuously directs the electrode toward the groove through the nozzle. Shielding gas is supplied to the arc welding zone by nozzles 28. A welding current supply arrangement comprises a current receiving plate (9) fixed to the top end of the rotatable nozzle, a stationary brush (11) having on the upper surface thereof a current feed plate (13), a plurality of rods (19) for holding the brush and the current feeding plate stationary, and a plurality of springs (22) for applying pressure onto the contact interface between the brush (11) and the rotating current receiving plate (9). The pressure is such that the nozzle (1) and the current receiving plate (9) can rotate while the brush (11) and the current feed plate (13) remain stationary and at the same time the welding current can flow smoothly from the brush (11) to the receiving plate (9). This arrangement avoids damage to the nozzle rotating mechanism (5, 6) by archeat or spatters and yet leads to only a small loss of welding current.
    • 喷嘴(1)通过机构(5,6)以其轴线高速旋转,并且具有通道(3,10),用于将消耗焊接电极(4)从喷嘴的中心轴向偏心地朝向凹槽 形成在被焊接物体之间。 进给机构通过喷嘴将电极连续地引向凹槽。 屏蔽气体通过喷嘴28供应到电弧焊接区域。焊接电流供应装置包括固定到可旋转喷嘴的顶端的电流接收板(9),固定刷(11),其上表面上具有电流 馈电板(13),用于保持电刷和电流供给板固定的多个杆(19)和用于向刷(11)和旋转电流接收之间的接触界面施加压力的多个弹簧(22) 板(9)。 压力使得喷嘴(1)和电流接收板(9)可以在电刷(11)和电流馈电板(13)保持静止的同时旋转,并且同时焊接电流可以从电刷平滑地流动 (11)连接到接收板(9)。 这种布置避免了由于安装或飞溅而对喷嘴旋转机构(5,6)造成的损坏,并且仅导致焊接电流的小损失。