JPS6328152U

JPS6328152U -

Info

Publication number: JPS6328152U
Application number: JP12073186U
Authority: JP
Priority date: 1986-08-06
Filing date: 1986-08-06
Publication date: 1988-02-24
Also published as: JPH043643Y2

Description

[Brief explanation of the drawing]

添付図面は、本考案に係る空気霧化静電塗装銃
の好ましい一実施例を、その要部を裁断して示す
部分的裁断側面図である。図において、１は銃本体、２は塗料供給路、３
はノズルの前端開口、４は塗料ノズル、５は霧化
空気供給路、６は中央霧化空気孔、７は霧化空気
孔、１０は整形空気供給路、１１は整形空気孔、
１３は空気キヤツプ、１４は塗料ノズルの塗料室
、１５は弁座、１６は弁体の略円錐形前端部、１
７は弁状弁体、１８はピストン、１９，２０は空
気通路、２１はシリンダ前室、２２はシリンダ後
室、２３は空気シリンダ部、２４はＶ形パツキン
、２５，２６，２７は弁体支持部材、２８はシリ
ンダ後蓋、２９はニードル弁装置、３０はばね接
続子、３１は塗料粒子荷電電極、３２は銃本体の
支持腕、３３は低電圧１次巻線、３４は高電圧２
次巻線、３５は昇圧変圧器、３６は直流高電圧発
生器、３７は高抵抗器、３８は板状接触子、３８
，３９は釦形接触子、４１は高圧電源用の単一型
造体、４２は塗料ノズルの後端部分、４３は空気
シリンダ部の筒状延長部、４４，４５は空洞、４
６は銃本体の後壁部、４７は低電圧ケーブル、４
８は塗料ホース、４９は霧化空気ホース、をそれ
ぞれ示す。 The accompanying drawing is a partially cutaway side view showing a preferred embodiment of the air atomizing electrostatic coating gun according to the present invention, with main parts cut away. In the figure, 1 is the gun body, 2 is the paint supply path, and 3 is the gun body.
is the front end opening of the nozzle, 4 is the paint nozzle, 5 is the atomizing air supply path, 6 is the central atomizing air hole, 7 is the atomizing air hole, 10 is the shaping air supply path, 11 is the shaping air hole,
13 is an air cap, 14 is a paint chamber of a paint nozzle, 15 is a valve seat, 16 is a substantially conical front end of a valve body, 1
7 is a valve-shaped valve body, 18 is a piston, 19, 20 are air passages, 21 is a cylinder front chamber, 22 is a cylinder rear chamber, 23 is an air cylinder part, 24 is a V-shaped packing, 25, 26, 27 are valve bodies Support members, 28 is the cylinder rear cover, 29 is the needle valve device, 30 is the spring connector, 31 is the paint particle charging electrode, 32 is the support arm of the gun body, 33 is the low voltage primary winding, 34 is the high voltage 2
Next winding, 35 is a step-up transformer, 36 is a DC high voltage generator, 37 is a high resistor, 38 is a plate contact, 38
, 39 is a button-shaped contact, 41 is a single-type structure for a high-voltage power source, 42 is a rear end portion of a paint nozzle, 43 is a cylindrical extension of an air cylinder portion, 44 and 45 are cavities, 4
6 is the rear wall of the gun body, 47 is a low voltage cable, 4
8 represents a paint hose, and 49 represents an atomizing air hose.

Claims

[Scope of Claim for Utility Model Registration] A gun body; a paint nozzle that is installed at the front end of the gun body and sprays liquid paint supplied through a paint supply passage that penetrates the wall of the gun body;
A central air hole for nozzle insertion, which is attached to the front end of the gun body and communicates with the atomizing air supply path provided through the wall of the gun body, and a plurality of air holes surrounding the central air hole. an air cap for atomizing the liquid paint injected from the paint nozzle; and a generally conical front end disposed inside the gun body and coming into contact with and away from a valve seat formed by an inclined inner wall of the paint nozzle; A needle valve device for controlling the ejection of liquid paint from the paint nozzle, comprising an elongated rod-shaped valve body, a valve body driving piston fixed to the rear end of the valve body, and an air cylinder portion housing the piston. The paint is formed by an elongated linear conductor attached to the valve body of the needle valve device, the front end of which protrudes forward from the front end opening of the paint nozzle, and a high DC voltage is applied via a high resistance element. an air atomizing station comprising: a particle charging electrode; and means for controlling air supplied to the air cylinder section through an air passageway provided through the wall of the gun body for actuating the needle valve arrangement. (1) The rod-shaped valve body of the needle valve device is formed of a ceramic tube having an axial center hole, the piston is made of a ceramic material that has good adhesion to the valve body, and an air cylinder is provided. A valve body supporting member that slidably supports the valve body with respect to the valve body and the air cylinder portion is formed of an ultra-high molecular weight polyethylene material with high electrical insulation properties; (3) The front end of the air cylinder of the needle valve device is extended forward into a cylindrical shape. The paint nozzle is attached and fixed to the extension part to form an integrated nozzle-needle valve assembly, and the nozzle-needle valve is installed in a substantially cylindrical cavity that is opened forward at the front end of the gun body. Insert the assembly from the front, fit it, and fix it to the gun body, and (4) connect it to a transformer having a low-voltage primary winding and a high-voltage secondary winding, and the secondary output terminal of the transformer. A rectified DC high voltage generator and a plate-shaped spiral-wound high resistance element whose one terminal is connected to the output terminal of the DC high voltage are embedded and molded in a highly insulating synthetic resin material. Forming a single-type structure, inserting the single-type structure from the rear into a cavity provided at the rear end of the gun body and fitting it to the gun body, and fixing the single-type structure to the gun body; (5) Connect the low voltage cable introduced into the rear end of the gun body to the primary input terminal of the transformer, and connect the other terminal of the high resistance element to the spring attached to the rear end wall of the air cylinder. An air atomizing electrostatic painting gun, characterized in that the paint terminal is connected to the rear end of the charged electrode by a connector.