JPS6272777U

JPS6272777U -

Info

Publication number: JPS6272777U
Application number: JP16476085U
Authority: JP
Priority date: 1985-10-24
Filing date: 1985-10-24
Publication date: 1987-05-09

Description

[Brief explanation of the drawing]

添付図面は本考案の実施例を示し、第１図は最
大開放位置を示す縦断側面図、第２図は中間開放
位置を示す縦断側面図、第３図は溶接位置を示す
縦断側面図、第４図はエアー送給路３５の他の実
施例を示す縦断側面図である。１；環状フレーム、３；直線往復動装置、４ａ
；移動電極、４ｂ；固定電極、１１；シリンダー
、１５；第一ピストン、１８；第二ピストン、２
４；移動杆、３０；第一可変室、３１；第二可変
室、３２；第三可変室、３３，３４，３６；エア
ー供給口、３５；エアー送給路、３９；案内ロツ
ド。 The accompanying drawings show an embodiment of the present invention, in which Fig. 1 is a longitudinal side view showing the maximum open position, Fig. 2 is a longitudinal side view showing the intermediate open position, Fig. 3 is a longitudinal side view showing the welding position, and Fig. 3 is a longitudinal side view showing the welding position. FIG. 4 is a longitudinal sectional side view showing another embodiment of the air supply path 35. 1; Annular frame, 3; Linear reciprocating device, 4a
; moving electrode, 4b; fixed electrode, 11; cylinder, 15; first piston, 18; second piston, 2
4; moving rod; 30; first variable chamber; 31; second variable chamber; 32; third variable chamber; 33, 34, 36; air supply port; 35; air supply path; 39; guide rod.

Claims

[Claims for Utility Model Registration] (1) A linear reciprocating device for controlling moving electrodes to move away from each other and a fixed electrode are installed at the ends of an annular frame such that both electrodes are opposed to each other in the line of movement of the moving electrode. In the linear reciprocating device, the linear reciprocating device is housed in a cylinder fixed to an annular frame, and a first piston in the form of a cylindrical body with a bottom is housed with the main wall of the bottom thereof positioned rearward; A second piston connected to a movable rod having a movable electrode at the front end is disposed within the first piston, a first variable chamber is provided between the first piston and the rear wall of the cylinder, and a first variable chamber is provided between the first piston and the second piston. A second variable chamber is formed between the second piston and the front wall of the cylinder, and a third variable chamber is formed between the second piston and the front wall of the cylinder, and each of the variable chambers is configured to communicate with a pressure source via a pressure control mechanism. Portable spot welding machine. (2) The portable spot welding machine according to claim 1, wherein the movable rod is provided with a pressure fluid supply path that communicates with the second variable chamber.