JPH0450701U

JPH0450701U -

Info

Publication number: JPH0450701U
Application number: JP9272390U
Authority: JP
Priority date: 1990-09-05
Filing date: 1990-09-05
Publication date: 1992-04-28

Description

[Brief explanation of the drawing]

第１図は本考案のピストン位置確認装置の一実
施例を示す要部断面図、第２図は本考案によるピ
ストン位置確認装置の他の実施例を示す要部断面
図、第３図は本考案によるピストン位置確認装置
の使用状態を説明するボーリング専用機の側面図
、第４図は従来のピストン位置確認装置の説明図
である。２……シリンダ、２ａ……内周面、２ｂ……頂
部、４……ピストン、７……駆動用電磁弁、８…
…前進確認管路、８ａ……開口部、９……後退確
認管路、９ａ……開口部、１１……前進確認圧力
検出装置、１２……後退確認圧力検出装置、２２
……治具本体（基部）。 FIG. 1 is a cross-sectional view of the main part showing one embodiment of the piston position confirmation device of the present invention, FIG. 2 is a cross-sectional view of the main part showing another embodiment of the piston position confirmation device of the present invention, and FIG. FIG. 4 is a side view of a dedicated boring machine illustrating the usage state of the piston position confirmation device according to the invention, and FIG. 4 is an explanatory diagram of the conventional piston position confirmation device. 2... Cylinder, 2a... Inner peripheral surface, 2b... Top, 4... Piston, 7... Drive solenoid valve, 8...
...Advance confirmation pipe, 8a...Opening, 9...Backward confirmation pipe, 9a...Opening, 11...Forward confirmation pressure detection device, 12...Backward confirmation pressure detection device, 22
...Jig body (base).

Claims

[Claims for Utility Model Registration] (1) A cylinder, a piston fitted in the cylinder so as to be able to reciprocate, and a forward position and a backward position for supplying air to the forward and backward movement sides of the piston of the cylinder; A driving solenoid valve that has a neutral position that stops air supply to the forward movement side and the backward movement side, and that switches from the neutral position to the forward position or the backward position by excitation, and is energized to switch the driving solenoid valve to the forward position. After the start, there is a forward timer that stops excitation of the driving solenoid valve after the forward movement time required for the piston to move from the backward movement end to the forward movement end, and the piston moves forward after starting excitation to switch the driving solenoid valve to the backward position. In a piston moving device having a backward movement timer that stops excitation of a driving solenoid valve after the backward movement time required to move from a movement end to a backward movement end has elapsed, an opening is closed by the piston at a forward movement end of the piston. a forward confirmation conduit whose opening is closed by the piston at the end of the backward movement of the piston;
It has an air supply device that supplies air to the forward confirmation conduit and the backward confirmation conduit, and a forward confirmation pressure detection device and a backward confirmation pressure detection device that detect the pressure in the forward confirmation conduit and the backward confirmation conduit. , when the forward movement time determined by the forward timer has elapsed and the forward movement confirmation pressure detection device detects a pressure equal to or higher than a predetermined pressure, and after the backward movement time determined by the reverse timer has elapsed and the reverse motion confirmation pressure detection device detects a pressure equal to or greater than the predetermined pressure. A piston position confirmation device characterized by emitting an electric signal when detected. (2) The air supply device has a forward confirmation position and a backward confirmation position where air is supplied to the forward confirmation conduit and the backward confirmation conduit, and a neutral position where the air supply to the forward confirmation conduit and the backward confirmation conduit is stopped. 2. The piston position confirmation device according to claim 1, further comprising a confirmation solenoid valve which is switched from a neutral position to a forward confirmation position or a backward confirmation position by excitation. (3) The piston position confirmation device according to claim 1 or 2, wherein the openings of the forward confirmation conduit and the backward confirmation conduit are each opened on the inner circumferential surface of the cylinder. (4) Claim 1 wherein the openings of the forward confirmation conduit and the backward confirmation conduit open at the top and base of the cylinder, respectively.
Or 2 piston position confirmation device.