JP3242034B2 - Pressure leak inspection device - Google Patents
Pressure leak inspection deviceInfo
- Publication number
- JP3242034B2 JP3242034B2 JP19230897A JP19230897A JP3242034B2 JP 3242034 B2 JP3242034 B2 JP 3242034B2 JP 19230897 A JP19230897 A JP 19230897A JP 19230897 A JP19230897 A JP 19230897A JP 3242034 B2 JP3242034 B2 JP 3242034B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- inspection
- air
- fluid
- internal space
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Examining Or Testing Airtightness (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えば自動二輪車
用エンジンのクランクケース等の圧洩れ検査装置の改良
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in an apparatus for inspecting pressure leakage of, for example, a crankcase of a motorcycle engine.
【０００２】[0002]
【従来の技術】従来、例えば自動二輪車用エンジンのク
ランクケース等の中空ワークを鋳造した際、鋳巣の欠陥
等の有無を検査するため、例えば図２に示すような圧洩
れ検査装置５１によって圧洩れ検査が行われることがあ
る。2. Description of the Related Art Conventionally, when a hollow work such as a crankcase of a motorcycle engine is cast, for example, a pressure leakage inspection device 51 as shown in FIG. Leak testing may be performed.
【０００３】この検査装置５１は、ウレタンゴム板製の
シール面５２に中空ワークＷの開口部を向けて載置し、
この中空ワークＷを、上方のクランプ治具５３の加圧エ
アでシール面５２に向けて押圧して内部空間を密閉する
とともに、内部空間を所定圧に加圧し、検査ユニット５
４で内部空間の圧力を測定して圧洩れを検査するように
している。そして、クランプ治具５３には、アクチュエ
ータ５５が設けられ、このアクチュエータ５５には、エ
ア源５６に通じるエア回路５７が接続され、中空ワーク
Ｗの内部空間部は不図示の加圧機構で所定圧にセット可
能にされるとともに、エア回路５７に設けた切換弁５８
によって、クランプ作動の切換えが制御されるようにな
っている。[0003] This inspection device 51 is mounted with the opening of a hollow work W facing a seal surface 52 made of a urethane rubber plate.
This hollow work W is pressed against the sealing surface 52 by the pressurized air of the upper clamp jig 53 to seal the internal space, and the internal space is pressurized to a predetermined pressure, and the inspection unit 5 is pressed.
At 4, the pressure in the internal space is measured to check for pressure leakage. An actuator 55 is provided on the clamp jig 53, and an air circuit 57 communicating with an air source 56 is connected to the actuator 55. The internal space of the hollow work W is pressurized by a pressure mechanism (not shown) at a predetermined pressure. And a switching valve 58 provided in the air circuit 57.
Thus, switching of the clamp operation is controlled.
【０００４】[0004]
【発明が解決しようとする課題】ところが、上記の検査
装置５１の場合、検査ユニット５４で圧洩れ検査を行っ
ている間、クランプ治具５３による圧力変化が生じて、
検査上問題が生じる場合がある。However, in the case of the above-described inspection apparatus 51, a pressure change by the clamp jig 53 occurs while the inspection unit 54 performs the pressure leakage inspection.
There may be a problem in inspection.
【０００５】すなわち、クランプ力の変化のうち、クラ
ンプ力が弱まる方向の変化は、圧洩れが生じやすくなっ
て製品の品質が悪い方向に判定されるため、品質の悪い
製品を後工程に流さないという検査の目的から特に問題
とはならないが、クランプ力が増大方向に変化する時
は、品質の悪い製品も良品と判定される虞れがあり、検
査上問題がある。That is, among the changes in the clamping force, the change in the direction in which the clamping force is weakened is likely to cause pressure leakage and is judged to be in the direction of poor product quality. There is no particular problem for the purpose of the inspection, but when the clamping force changes in the increasing direction, there is a possibility that a poor quality product may be determined as a good product, and there is a problem in the inspection.
【０００６】そして、例えば自動二輪車の製造工程のラ
イン等において、検査工程を洗浄工程等の近傍に配置し
て、洗浄工程等と同じエア源を共有するような場合は、
隣接する機器等の使用によってエア圧に変化が生じやす
くなる等、周囲の設備機器等の影響によって、クランプ
力に変化が生じ易かった。For example, in a motorcycle manufacturing process line or the like, when an inspection process is arranged near a cleaning process or the like and the same air source is shared with the cleaning process or the like,
A change in the clamping force is likely to occur due to the influence of peripheral equipment and the like, such as a change in the air pressure due to the use of an adjacent device and the like.
【０００７】そこで、本発明は、例えば設備の周辺機器
等の影響を受けず、誤測定により品質不良の製品を良品
と判断しないような検査装置の提供を目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to provide an inspection apparatus which is not affected by, for example, peripheral equipment of a facility and which does not judge a defective product due to an erroneous measurement as a non-defective product.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
本発明は、シール面に開口部を当接せしめた中空ワーク
を押圧して中空ワーク内の空間部を密閉するクランプ治
具と、密閉された内部空間部を所定圧に高める加圧機構
と、内部空間部の圧洩れを検査する検査ユニットと、前
記クランプ治具のアクチュエータに圧力流体源の圧力流
体を供給して駆動する流体回路を備えた圧洩れ検査装置
において、流体回路に、検査ユニットで圧洩れを検査し
ている間、流路を遮断してクランプ治具のアクチュエー
タへの圧力流体の供給を阻止する遮断機構を設けた。In order to achieve the above object, the present invention provides a clamp jig for sealing a space in a hollow work by pressing a hollow work having an opening in contact with a sealing surface, and a sealing jig. A pressurizing mechanism for increasing the pressure of the internal space to a predetermined pressure, an inspection unit for inspecting pressure leakage of the internal space, and a fluid circuit for supplying and driving a pressure fluid of a pressure fluid source to an actuator of the clamp jig. In the pressure leak inspection device equipped, the fluid circuit is shut off while the test unit is inspecting for pressure leakage, and the clamp jig is actuated .
A shut-off mechanism for preventing the supply of the pressure fluid to the heater is provided.
【０００９】すなわち、アクチュエータを作動させて中
空ワークをクランプした後、任意の手段によりワーク内
の空間部を所定圧に加圧し、アクチュエータに通じる流
体回路を遮断して空間部内の圧洩れを検査すれば、クラ
ンプ力が圧力流体源の圧力変化の影響を受けないため、
検査結果に悪影響が出ない。That is, after the hollow work is clamped by operating the actuator, the space in the work is pressurized to a predetermined pressure by any means, the fluid circuit leading to the actuator is cut off, and the leak in the space is inspected. If the clamping force is not affected by the pressure change of the pressure fluid source,
No adverse effect on test results.
【００１０】また流体回路を遮断すれば、一般的な傾向
として、アクチュエータのクランプ力が徐々に弱まる方
向に変化するが、この変化の方向は、検査上、よりシビ
ヤな検査が行われることを意味し、不具合とはならな
い。Further, when the fluid circuit is cut off, as a general tendency, the clamping force of the actuator gradually changes in a direction in which the clamping force gradually decreases. The direction of the change means that a more severe inspection is performed in the inspection. However, it does not become a problem.
【００１１】[0011]
【発明の実施の形態】本発明の実施の形態について添付
した図面に基づき説明する。ここで図１は本発明に係る
圧洩れ検査装置の構成例図である。Embodiments of the present invention will be described with reference to the accompanying drawings. Here, FIG. 1 is a configuration example diagram of the pressure leakage inspection device according to the present invention.
【００１２】本発明の圧洩れ検査装置１は、例えば自動
二輪車のクランクケース等の中空ワークを鋳造した際、
鋳巣等の不具合の有無を検査するための装置として構成
され、図１に示すように、例えばウレタンゴム板製等の
シール面２と、このシール面２上に開口部を向けて載置
される中空ワークＷを押圧するクランプ治具３と、この
クランプ治具３に加圧エアを供給するエア回路４と、こ
のエア回路４に接続されるエア源５と、中空ワークＷの
内部空間部の圧力を所定圧に加圧する不図示の加圧機構
と、内部空間部内の圧力を測定する検査ユニット６を備
えている。[0012] The pressure leakage inspection apparatus 1 of the present invention, when casting a hollow workpiece such as a crankcase of a motorcycle,
As shown in FIG. 1, the apparatus is configured as a device for inspecting the presence or absence of a defect such as a casting cavity, and is mounted with a sealing surface 2 made of, for example, a urethane rubber plate and an opening facing the sealing surface 2. Jig 3 for pressing the hollow work W, an air circuit 4 for supplying pressurized air to the clamp jig 3, an air source 5 connected to the air circuit 4, and an internal space of the hollow work W And a test unit 6 for measuring the pressure in the internal space.
【００１３】前記クランプ治具３は、中空ワークＷを押
圧する押圧板７と、この押圧板７を進退動させるアクチ
ュエータ８を備えており、押圧板７が前進すると中空ワ
ークＷが押圧されてクランプ力が強まり、押圧板７が後
退すると、クランプ力が弱まるようにされている。The clamp jig 3 includes a pressing plate 7 for pressing the hollow work W and an actuator 8 for moving the pressing plate 7 forward and backward. When the pressing plate 7 moves forward, the hollow work W is pressed and clamped. When the force increases and the pressing plate 7 retreats, the clamping force is reduced.
【００１４】前記エア回路４は、アクチュエータ８とエ
ア源５を連結すべく構成されており、またエア回路４の
途中には、加圧エアの供給路の切換え、及び流路の遮断
を制御するエア切換・遮断弁９が設けられている。すな
わちこのエア切換・遮断弁９は、例えばアクチュエータ
８を前進させてワークＷをクランプするクランプ位置
と、アクチュエータ８を後退させてクランプ力を解除す
るアンクランプ位置と、エア源５から供給される加圧エ
アを遮断する遮断位置の３位置の切換え方式にて構成さ
れている。The air circuit 4 is configured to connect the actuator 8 and the air source 5, and controls switching of the supply path of the pressurized air and interruption of the flow path in the middle of the air circuit 4. An air switching / shutoff valve 9 is provided. That is, the air switching / cutoff valve 9 includes, for example, a clamp position at which the actuator 8 is moved forward to clamp the workpiece W, an unclamped position at which the actuator 8 is moved backward to release the clamping force, and a pressure supplied from the air source 5. It is configured with a three-position switching system for shutting off the compressed air.
【００１５】また、中空ワークＷ内の空間部を加圧する
不図示の加圧機構は、例えば所定圧に調整した加圧エア
等を空間部内に供給することが出来るようにされ、例え
ば前記エア回路４の途中から分岐したエア回路、または
別個に設けたエア回路等を内部空間部に連通させること
で構成する。A pressurizing mechanism (not shown) for pressurizing a space in the hollow work W can supply, for example, pressurized air adjusted to a predetermined pressure into the space. An air circuit branched from the middle of the air passage 4 or an air circuit provided separately is connected to the internal space.
【００１６】以上のように構成された圧洩れ検査装置１
において、検査を行う時は、中空ワークＷの開口部をシ
ール面２に当接させて位置決めし、エア切換・遮断弁９
をクランプ位置にセットして、ワークＷをクランプする
と同時に、ワークＷの内部空間部を所定圧に加圧する。The pressure leakage inspection apparatus 1 configured as described above
In the inspection, when the inspection is performed, the opening of the hollow work W is brought into contact with the sealing surface 2 to be positioned, and the air switching / cutoff valve 9 is set.
Is set at the clamp position to clamp the work W and simultaneously pressurize the internal space of the work W to a predetermined pressure.
【００１７】それが完了すると、エア切換・遮断弁９を
遮断位置に切換えて、エア源５から供給される加圧エア
の流路を遮断した後、検査ユニット６によってワークＷ
の空間部圧力を検査する。そして、圧力が所定の範囲内
にあるか否かがチェックされ、良否が判定される。When the operation is completed, the air switching / shutoff valve 9 is switched to the shutoff position to shut off the flow path of the pressurized air supplied from the air source 5 and then the work unit W
Check the pressure in the space. Then, it is checked whether the pressure is within a predetermined range, and it is determined whether the pressure is good.
【００１８】このような検査方法において、例えばエア
源５の圧力が変化しても、クランプ治具３のクランプ力
に変化はなく、例えば周囲の設備機器等でエア源５を共
有する場合でも、検査結果に悪影響を与えることがな
い。In such an inspection method, for example, even if the pressure of the air source 5 changes, the clamping force of the clamp jig 3 does not change. Does not adversely affect test results.
【００１９】そして検査が終了すると、エア切換・遮断
弁９をアンクランプ位置に切換え、中空ワークＷを払い
出す。When the inspection is completed, the air switching / cutoff valve 9 is switched to the unclamping position, and the hollow work W is discharged.
【００２０】尚、本発明は以上のような実施形態に限定
されるものではない。本発明の特許請求の範囲に記載し
た事項と実質的に同一の構成を有し、同一の作用効果を
奏するものは本発明の技術的範囲に属する。例えばクラ
ンプ治具３のクランプ圧はエア以外の流体圧等を使用し
ても良く、また、中空ワークはクランクケース以外のワ
ークでも良い。The present invention is not limited to the above embodiment. Those having substantially the same configuration as those described in the claims of the present invention and exhibiting the same operation and effect belong to the technical scope of the present invention. For example, the clamp pressure of the clamp jig 3 may be a fluid pressure other than air, and the hollow work may be a work other than the crankcase.
【００２１】[0021]
【発明の効果】以上のように本発明に係る圧洩れ検査装
置は、クランプ治具で中空ワークの開口部をシール面に
押圧してクランプし、ワーク内の圧力を測定することで
圧洩れ検査を行うようにした検査装置において、圧洩れ
を検査している間、流体圧源とクランプ治具間の流路を
遮断してクランプ治具のアクチュエータへの圧力流体の
供給を阻止するようにしたため、エア源の圧力が変化し
てもクランプ治具によるクランプ力に悪影響を与えず、
検査の質を向上させることが出来る。As described above, the pressure leakage inspection device according to the present invention presses the opening of the hollow workpiece against the sealing surface with the clamp jig, clamps the workpiece, and measures the pressure inside the workpiece to perform the pressure leakage inspection. In the inspection device that performs the pressure leakage, while inspecting the pressure leak, the flow path between the fluid pressure source and the clamp jig is shut off and the pressure fluid is supplied to the actuator of the clamp jig.
Since the supply is blocked, even if the pressure of the air source changes, it does not adversely affect the clamping force of the clamp jig.
The quality of inspection can be improved.
【図１】本発明に係る圧洩れ検査装置の説明図FIG. 1 is an explanatory view of a pressure leakage inspection device according to the present invention.
【図２】従来の圧洩れ検査装置の説明図FIG. 2 is an explanatory diagram of a conventional pressure leakage inspection device.
１…圧洩れ検査装置、２…シール面、３…クランプ治
具、４…エア回路、５…エア源、６…検査ユニット、８
…アクチュエータ、９…エア切換・遮断弁、Ｗ…中空ワ
ーク。DESCRIPTION OF SYMBOLS 1 ... Pressure leak inspection apparatus, 2 ... Seal surface, 3 ... Clamp jig, 4 ... Air circuit, 5 ... Air source, 6 ... Inspection unit, 8
... actuator, 9 ... air switching / shutoff valve, W ... hollow work.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平９−21401（ＪＰ，Ａ) 特開 昭64−79634（ＪＰ，Ａ) 実開 平６−59503（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) G01M 3/26 G01M 3/00 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-9-21401 (JP, A) JP-A-64-79634 (JP, A) JP-A-6-59503 (JP, U) (58) Survey Field (Int.Cl. 7 , DB name) G01M 3/26 G01M 3/00
Claims (1)
ークを押圧して中空ワークの内部空間部を密閉するクラ
ンプ治具と、密閉された内部空間部を所定圧に高める加
圧機構と、内部空間部の圧洩れを検査する検査ユニット
と、前記クランプ治具のアクチュエータに圧力流体源の
圧力流体を供給して駆動する流体回路を備えた圧洩れ検
査装置であって、前記流体回路は、前記検査ユニットで
圧洩れを検査している間、流路を遮断して前記クランプ
治具のアクチュエータへの圧力流体の供給を阻止する遮
断機構を備えたことを特徴とする圧洩れ検査装置。1. A clamp jig for pressing a hollow work having an opening in contact with a sealing surface to seal an internal space of the hollow work, a pressurizing mechanism for increasing the sealed internal space to a predetermined pressure, and An inspection unit for inspecting pressure leakage of an internal space portion, and a fluid leakage inspection device including a fluid circuit for supplying and driving a pressure fluid of a pressure fluid source to an actuator of the clamp jig, wherein the fluid circuit is While the inspection unit is inspecting for pressure leakage, shut off the flow path and clamp
A pressure leakage inspection device comprising a shut-off mechanism for preventing supply of a pressure fluid to an actuator of a jig .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19230897A JP3242034B2 (en) | 1997-07-17 | 1997-07-17 | Pressure leak inspection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19230897A JP3242034B2 (en) | 1997-07-17 | 1997-07-17 | Pressure leak inspection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1137890A JPH1137890A (en) | 1999-02-12 |
| JP3242034B2 true JP3242034B2 (en) | 2001-12-25 |
Family
ID=16289121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19230897A Expired - Fee Related JP3242034B2 (en) | 1997-07-17 | 1997-07-17 | Pressure leak inspection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3242034B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5477949B2 (en) * | 2009-12-24 | 2014-04-23 | ダイハツ工業株式会社 | Pressure leak detection method and pressure leak detection device |
| CN106017826A (en) * | 2016-06-22 | 2016-10-12 | 苏州艾酷玛赫设备制造有限公司 | Box airtightness test device |
| KR102313587B1 (en) * | 2016-10-12 | 2021-10-15 | 후아웨이 테크놀러지 컴퍼니 리미티드 | Sealing performance inspection method, apparatus and storage medium |
| CN107389278B (en) * | 2017-06-28 | 2023-08-08 | 北京航天三发高科技有限公司 | Sealing inspection machine and use method thereof |
| CN108007647B (en) * | 2017-11-29 | 2019-12-17 | 郑州斯倍思机电有限公司 | plugging device for crankcase gas tightness test board |
| CN110823477B (en) * | 2019-11-24 | 2021-11-30 | 浙江拓速电机制造有限公司 | Detection fixing device for water-cooled motor shell |
| CN113125144B (en) * | 2021-04-07 | 2022-10-14 | 成都特恩达燃气设备有限公司 | Self-closing valve test system and test device |
-
1997
- 1997-07-17 JP JP19230897A patent/JP3242034B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1137890A (en) | 1999-02-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3242034B2 (en) | Pressure leak inspection device | |
| US5372031A (en) | Device for vacuum testing of closed systems | |
| KR20130127677A (en) | Apparatus for testing valve | |
| JP4846330B2 (en) | Machine tool status check device | |
| KR102028305B1 (en) | leak test and tap screw hole checking apparatus | |
| JP3179365B2 (en) | Sealing device for pressure test | |
| CN210677866U (en) | Machining clamp with air leakage detection function | |
| JP3414155B2 (en) | Leak tester and leak test method | |
| KR100897410B1 (en) | Leakage Detection Equipment For Seal Ring On Steel Ring Of Oil Pump | |
| JP2683658B2 (en) | Leakage inspection device and leakage inspection method | |
| JP3407630B2 (en) | Leak inspection device | |
| JP3210163B2 (en) | Leak inspection device | |
| KR20000051097A (en) | Air filter testing device | |
| JP2650475B2 (en) | Airtight test equipment | |
| JPH03231132A (en) | Leak tester for brake caliper | |
| KR20220069516A (en) | Inspection Apparatus for Air-Conditioner Pipe | |
| JPS6182138A (en) | Inspecting method of pressure leak | |
| JPH06323946A (en) | Inspection method and device for seal element | |
| JP3072986U (en) | Workpiece seating confirmation device | |
| KR20200118609A (en) | Inner Diameter Chip Detecting System and Detecting Method using the same | |
| KR102135448B1 (en) | Brake hose check device | |
| JP3643185B2 (en) | Inspection equipment such as burrows | |
| KR101999784B1 (en) | Welding leak testing appratus for diesel particle filter cover | |
| KR102135449B1 (en) | Valve for check device and valve system of brake hose check apparatus equipped with check valve | |
| KR960016097B1 (en) | Leakage test apparatus for a gas valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20071019 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081019 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081019 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091019 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091019 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101019 Year of fee payment: 9 |
|
| LAPS | Cancellation because of no payment of annual fees |