Airless spray gun having improved nozzle assembly and electrode circuit
connections
    14.
    发明授权
    Airless spray gun having improved nozzle assembly and electrode circuit connections 失效
    无喷枪具有改进的喷嘴组件和电极回路连接

    公开(公告)号:US4572438A

    公开(公告)日:1986-02-25

    申请号:US609764

    申请日:1984-05-14

    CPC classification number: B05B5/0536 B05B5/0533

    Abstract: A spray gun for airless atomization for electrostatic deposition of a coating material upon a substrate includes a novel dual electrode element having a spring loop portion. The two electrodes are the respective end portions of a single electrode wire, which has its major portion between the electrodes formed into a spiral spring. A tip resistor is provided with a conductive fitting that presents a broad and sturdy bearing surface which abuts the electrode spring portion to thereby directly connect the electrode with a high voltage charging circuit. The electrode spring accommodates spacing variations between the electrode and tip resistor, and provides a continuous electrical connection regardless of the rotational position of the electrode relative to the tip resistor. The dual electrode spring further serves to secure a number of otherwise loose parts of the gun nozzle assembly together, and prevents the parts from falling out and getting lost when the nozzle assembly is removed from the spray gun. An improved electrical circuit is also achieved through the use of a conductive cap which surrounds one end of a high voltage barrel resistor used in the gun. The conductive cap has a portion which extends along the barrel resistor body which is electrically connected to the tip resistor by a spring lead from the tip resistor.

    Abstract translation: 用于将涂料静电沉积在基材上的用于无空气雾化的喷枪包括具有弹簧环部分的新型双电极元件。 两个电极是单个电极线的相应端部,其电极之间的主要部分形成螺旋弹簧。 尖端电阻器设置有导电配件,其呈现与电极弹簧部分邻接的宽而坚固的支承表面,从而将电极直接连接到高压充电电路。 电极弹簧容纳电极和尖端电阻器之间的间隔变化,并且提供连续的电连接,而不管电极相对于尖端电阻器的旋转位置如何。 双电极弹簧还用于将喷枪组件的许多否则松散的部件固定在一起,并且当喷嘴组件从喷枪移除时防止部件脱落并且丢失。 还通过使用围绕枪中使用的高压筒式电阻器的一端的导电盖来实现改进的电路。 导电盖具有沿着筒状电阻体延伸的部分,其通过来自末端电阻器的弹簧引线电连接到尖端电阻器。

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