JPH0376622U

JPH0376622U -

Info

Publication number: JPH0376622U
Application number: JP13519189U
Authority: JP
Priority date: 1989-11-20
Filing date: 1989-11-20
Publication date: 1991-07-31

Description

[Brief explanation of the drawing]

第１図〜第４図は本考案の実施例を示すもので
、第１図はプリント基板打抜加工装置の全体構成
図、第２図〜第４図は夫々ピン孔打抜工程と上昇
工程とノツクアウト工程のプリント基板打抜加工
装置の要部断面図、第５図は従来技術第１図相当
図である。１０……プリント基板打抜加工装置、２０……
ノツクアウトユニツト、６０……エア駆動式ブー
スタ、６１……エアシリンダ、６１ｂ……往動作
動室、６１ｃ……復動作動室、７０……空圧回路
、７１……エア供給源、７６……エアリザーバ、
７７……エア供給路、７８……２圧切換式レギユ
レータバルブ、７９……パイロツト部、８１……
第１パイロツトエア通路、８２……第２パイロツ
トエア通路、８３……第１パイロツトエア用レギ
ユレータバルブ、８５……第２パイロツトエア用
レギユレータバルブ。 Figures 1 to 4 show an embodiment of the present invention. Figure 1 is an overall configuration diagram of a printed circuit board punching device, and Figures 2 to 4 are pin hole punching steps and lifting steps, respectively. FIG. 5 is a cross-sectional view of a main part of a printed circuit board punching apparatus in the knockout process, and is a diagram corresponding to FIG. 1 of the prior art. 10... Printed circuit board punching processing device, 20...
Knockout unit, 60...Air-driven booster, 61...Air cylinder, 61b...Forward motion chamber, 61c...Return motion chamber, 70...Pneumatic circuit, 71...Air supply source, 76... …air reservoir,
77... Air supply path, 78... 2-pressure switching type regulator valve, 79... Pilot section, 81...
1st pilot air passage, 82... 2nd pilot air passage, 83... 1st pilot air regulator valve, 85... 2nd pilot air regulator valve.

Claims

[Scope of Claim for Utility Model Registration] In a pneumatic circuit for an air-driven booster that supplies hydraulic pressure to a knockout unit of a printed circuit board punching device that is attached to the slide of a press machine and used for punching printed circuit boards, An air reservoir is provided to receive pressurized air from an air supply source, an air supply path is provided for supplying pressurized air from the air reservoir to the reciprocating motion chamber of the air cylinder of the air-driven booster, and the air supply path includes a first air reservoir. Equipped with a two-pressure switching type regulator valve that can selectively switch the set pressure between the first set pressure and a lower second set pressure, and the pilot air for setting the set pressure is switched using a solenoid. Then, install the first valve in the pilot section of the above regulator valve.
A first pilot air passage supplying pilot air for setting the first set pressure, the pressure of which is set by the pilot air regulator valve, and a second set pressure setting, the pressure of which is set by the second pilot air regulator valve. A pneumatic circuit for a printed circuit board punching device, characterized in that the air cylinder is connected to a second pilot air passage for supplying pilot air, and a double action chamber of the air cylinder is opened to the atmosphere.