JPH04215028A - Airtightness testing device for cylindrical single-bottomed container - Google Patents

Airtightness testing device for cylindrical single-bottomed container

Info

Publication number
JPH04215028A
JPH04215028A JP40148990A JP40148990A JPH04215028A JP H04215028 A JPH04215028 A JP H04215028A JP 40148990 A JP40148990 A JP 40148990A JP 40148990 A JP40148990 A JP 40148990A JP H04215028 A JPH04215028 A JP H04215028A
Authority
JP
Japan
Prior art keywords
air
container
air supply
holder
passage
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.)
Granted
Application number
JP40148990A
Other languages
Japanese (ja)
Other versions
JP2893955B2 (en
Inventor
Koichi Hiramatsu
浩一 平松
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP40148990A priority Critical patent/JP2893955B2/en
Publication of JPH04215028A publication Critical patent/JPH04215028A/en
Application granted granted Critical
Publication of JP2893955B2 publication Critical patent/JP2893955B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Examining Or Testing Airtightness (AREA)

Abstract

PURPOSE:To improve the durability of an existing seal packing member so as to obtain an airtightness testing device suppressing the deformation of a cylindrical single-bottomed container at the testing time. CONSTITUTION:An airtightness testing device 10 for a cylindrical single- bottomed container 1 is formed of an air supply device 5 for supplying air into the interior 16 of the cylindrical single-bottomed container 1, a holder 2 inserted into the interior 16 of the container 1 at the testing time with an air supply passage 4 and an air branch passage 12 formed therein, an elastic seal packing member 9 provided around the outer peripheral surface of the holder 2, and a spool valve device 13 provided on the air supply downstream side of a branch part between the air supply passage 9 and the air branch passage 12. The spool valve device 13 leads air into the air branch passage 12 to expand the seal packing member 9 and thereby to seal on the container inner peripheral surface 1b in the first term of testing, and leads the air into the container interior 16 in the last term of testing after sealing to perform airtightness testing.

Description

【発明の詳細な説明】[Detailed description of the invention]

【0001】0001

【産業上の利用分野】本発明は、一方の端部が密封され
、他方の端部が解放された円筒状容器、即ち円筒状片口
容器を試験の対象とし、この空気漏れをテストする気密
性試験装置に関する。
[Industrial Application Field] The present invention uses a cylindrical container whose one end is sealed and the other end is open, that is, a cylindrical single-ended container, as the subject of a test, and tests the airtightness of this container for air leakage. Regarding test equipment.

【0002】0002

【従来の技術】例えば筒状のパイプを所定長さに切断し
、その一端を溶接等の手段によって封止したり、或はポ
ンチ等による押し出し成形によって製造されたりするよ
うな円筒状片口容器に対し、その気密性を試験するよう
な場合、従来では図3に示すような気密性試験装置が使
用されている。
[Prior Art] For example, a cylindrical single-mouthed container is manufactured by cutting a cylindrical pipe to a predetermined length and sealing one end by means such as welding, or by extrusion molding with a punch or the like. On the other hand, when testing the airtightness, conventionally, an airtightness testing device as shown in FIG. 3 is used.

【0003】この装置は、図示するようにその軸方向移
動を壁部材Wによって規制される容器1の開口端部1a
に対して、リング状のシールパッキン31を装着したパ
ッキンホルダ32を押し付け、この開口端部1aからの
空気漏れを防止した上で、空気供給手段5から空気供給
通路32aを介して容器1内部に空気を送り込み、この
状態での容器1からの空気漏れの有無を検査するもので
ある。 尚、図3において6は空気供給手段5を構成するエア源
、7は切り換えバルブ、8は圧力スイッチを夫々示して
おり、エア源6によって一定時間給気し、圧力が所定値
以上となり圧力スイッチ8がON作動すると、切り換え
バルブ7は閉じられるようになっており、その後の圧力
がスイッチ8の作動状態によって漏れが生じているか否
かが判定されるようになっている(ON状態が続行すれ
ば漏れなし)。
As shown in the figure, this device has an open end 1a of a container 1 whose axial movement is regulated by a wall member W.
The packing holder 32 equipped with the ring-shaped seal packing 31 is pressed against the air to prevent air leakage from the open end 1a, and then the air is supplied from the air supply means 5 to the inside of the container 1 via the air supply passage 32a. Air is sent in and the presence or absence of air leakage from the container 1 in this state is inspected. In FIG. 3, reference numeral 6 indicates an air source constituting the air supply means 5, 7 indicates a switching valve, and 8 indicates a pressure switch. Air is supplied by the air source 6 for a certain period of time, and when the pressure exceeds a predetermined value, the pressure switch is activated. When the switch 8 is turned ON, the switching valve 7 is closed, and whether or not a leak has occurred is determined based on the subsequent pressure depending on the operating state of the switch 8 (unless the ON state continues). (no omissions).

【0004】0004

【発明が解決しようとする課題】ところで上述したよう
な従来の気密性試験装置において、その検査にあたって
は、図示するようにシールパッキン31を容器1のエッ
ジとなる開口端部1aに押し付けてこの部分をシールす
るために、この開口端部1aによってシールパッキン3
1が損傷し易く、このシール部から空気漏れが生じるこ
とがある。従って、この対策としては、装置使用の際、
頻繁にシールパッキン31を交換する必要があり、装置
のランニングコストや検査能力に悪影響を及ぼす。
[Problems to be Solved by the Invention] In the conventional airtightness testing apparatus as described above, when testing, the seal packing 31 is pressed against the open end 1a which is the edge of the container 1, and this part is inspected as shown in the figure. In order to seal the seal packing 3 by this open end 1a,
1 is easily damaged, and air leakage may occur from this seal. Therefore, as a countermeasure, when using the device,
It is necessary to frequently replace the seal packing 31, which adversely affects the running cost and inspection ability of the device.

【0005】加えてこの検査方法は、検査の際に容器1
をその軸方向に押し付けるため、押し付け力によっては
容器1を変形させる可能性があり、厳密な寸法精度を必
要とする容器1に対しては好ましくない場合がある。本
発明は従来装置のこのような問題に鑑み、提供されるも
のである。
[0005] In addition, in this inspection method, the container 1 is
Since the container 1 is pressed in its axial direction, the container 1 may be deformed depending on the pressing force, which may not be preferable for a container 1 that requires strict dimensional accuracy. The present invention is provided in view of these problems of conventional devices.

【0006】[0006]

【課題を解決するための手段】課題を解決するため、本
発明によって提供される円筒状片口容器の気密性試験装
置は、円筒状片口容器の内部に空気を供給する空気供給
手段と、円筒状片口容器の内部に挿入され、かつこの挿
入方向に、上記空気供給手段からの空気を円筒状片口容
器に導く空気供給通路が形成されるホルダと、該ホルダ
の外周面周囲に設けられ、その上下端がホルダに対して
気密状に固着される弾力性のシールパッキン部材と、上
記空気供給通路より分岐し、該弾力性のシールパッキン
部材の内周面に対向するべくホルダの外周面に開口する
空気分岐通路と、空気供給通路と上記空気分岐通路との
分岐部よりも給気下流側の空気供給通路内に設けられ、
空気分岐通路内圧力が所定圧力以上の時、空気供給通路
に導入された空気を容器内部へと導く弁手段とを備える
[Means for Solving the Problems] In order to solve the problems, an airtightness test device for a cylindrical single-mouth container provided by the present invention includes an air supply means for supplying air into the inside of a cylindrical single-mouth container, and a cylindrical single-mouth container. A holder that is inserted into the single-mouthed container and has an air supply passage formed in the direction of insertion for guiding air from the air supply means to the cylindrical single-mouthed container; an elastic seal packing member whose end is airtightly fixed to the holder; and an opening on the outer circumferential surface of the holder that branches from the air supply passage and faces the inner circumferential surface of the elastic seal packing member. an air branch passage, and an air supply passage provided in the air supply passage downstream of the branch between the air supply passage and the air branch passage;
A valve means is provided for guiding the air introduced into the air supply passage into the inside of the container when the pressure inside the air branch passage is equal to or higher than a predetermined pressure.

【0007】[0007]

【作用】空気分岐通路内圧力が所定圧力となるまでの気
密性試験の前期において、弁手段は空気を空気分岐通路
に導くことによって、弾力性のシールパッキン部材とホ
ルダの間隙に空気が供給され、弾力性のシールパッキン
部材は次第に膨らみ、ついにはシールパッキン部材と容
器の内周面が周状に接触し、この部分で機密シール部を
提供する。そしてこの状態を保ったまま、空気分岐通路
内圧力が所定圧力以上となる試験後期において、弁手段
は空気を空気供給通路を介して容器内部に供給し、容器
の気密性を試験する。
[Operation] In the early stage of the airtightness test until the internal pressure of the air branch passage reaches a predetermined pressure, the valve means guides air to the air branch passage, thereby supplying air to the gap between the elastic seal packing member and the holder. The resilient seal packing member gradually expands until the seal packing member and the inner circumferential surface of the container come into circumferential contact, providing a hermetic seal at this portion. While maintaining this state, in the latter half of the test when the pressure inside the air branch passage becomes equal to or higher than a predetermined pressure, the valve means supplies air into the container through the air supply passage to test the airtightness of the container.

【0008】[0008]

【実施例】図面を参照しながら本発明の実施例を以下、
説明する。図1は本実施例による気密性試験装置(以下
、装置と略す)10の試験前(給気前)の状態を示し、
又図2は装置10による気密性試験中(給気後)の装置
作動状態を示している。
[Examples] Examples of the present invention will be described below with reference to the drawings.
explain. FIG. 1 shows the state of the airtightness test device (hereinafter abbreviated as the device) 10 according to the present example before the test (before air supply),
Further, FIG. 2 shows the operating state of the device 10 during an airtightness test (after air supply).

【0009】これらの図に関し、1は検査対象となる、
片側が封止された円筒状片口容器であり、装置10の主
要部は気密性検査時、この容器1の内部に挿入される。 装置10は、容器1の内部に容易に挿入できるように容
器1の内径よりも小さな内径を有する略円柱形状のホル
ダ2を備えており、このホルダ2は装置10のベース3
に固定されている。ホルダ2の中央部には、容器1への
挿入方向(矢印1方向)にほぼ一致するようにその長手
方向に延びる空気供給通路4が形成される。
Regarding these figures, 1 is the object of inspection;
The device 10 is a cylindrical single-ended container with one side sealed, and the main part of the device 10 is inserted into the container 1 during an airtightness test. The device 10 includes a substantially cylindrical holder 2 having an inner diameter smaller than the inner diameter of the container 1 so as to be easily inserted into the container 1, and this holder 2 is attached to a base 3 of the device 10.
Fixed. An air supply passage 4 is formed in the center of the holder 2 and extends in its longitudinal direction so as to substantially coincide with the direction of insertion into the container 1 (direction of arrow 1).

【0010】この空気供給通路4の一端は、後述する気
密性試験のための空気供給源となる空気供給装置5に接
続されており、又他端はホルダ2の先端で開口するよう
に形成されている。空気供給装置5は例えばエアポンプ
等に代表されるエア源6と、このエア源6より空気下流
側に配置される切り替えバルブ7と、この切り替えバル
ブ7より更に空気下流側に位置する圧力スイッチ8とに
よって構成されている。尚、上述したこの空気供給装置
5の構造及び各構成要素の役割は、従来装置のそれとほ
ぼ同一であって、本発明においても何等変わることはな
い。
One end of this air supply passage 4 is connected to an air supply device 5 which serves as an air supply source for an airtightness test to be described later, and the other end is formed to open at the tip of the holder 2. ing. The air supply device 5 includes an air source 6 typified by, for example, an air pump, a switching valve 7 located downstream of the air source 6, and a pressure switch 8 located further downstream of the switching valve 7. It is made up of. The structure of the air supply device 5 described above and the roles of each component are almost the same as those of the conventional device, and are unchanged in the present invention.

【0011】ホルダ2の外方には、その外周面2aを覆
うように例えばゴム等の弾力性を有する材料から成る筒
状のシールパッキン部材9が設けられる。このシールパ
ッキン部材9は、図示するように、一端にフランジ部9
aを備えており、このフランジ部9aはホルダ2の肩部
2b上で、上方より前出のベース3に押さえ付けられ、
フランジ部9aと肩部2bの間でシール部分を提供する
。尚、この部分の気密性を確実にするため、例えば接着
剤等によって、このフランジ部9aとホルダ2の肩部2
bを密に接合するようにしても良い。
A cylindrical seal packing member 9 made of an elastic material such as rubber is provided on the outside of the holder 2 so as to cover its outer peripheral surface 2a. This seal packing member 9 has a flange portion 9 at one end, as shown in the figure.
a, the flange portion 9a is pressed from above by the base 3 on the shoulder portion 2b of the holder 2,
A sealing portion is provided between the flange portion 9a and the shoulder portion 2b. In addition, in order to ensure the airtightness of this part, this flange part 9a and the shoulder part 2 of the holder 2 are bonded, for example, with adhesive or the like.
b may be closely joined.

【0012】一方、シールパッキン部材9の他端は、ホ
ルダ2の先端部2cを覆うように端面9bを有しており
、その中央部はホルダ2と同様に空気供給通路4を提供
するべく開口する。そしてこのホルダ2、及びシールパ
ッキン部材9の開口部に対しては、軸方向通路11aを
内部に備えた固定部材11が挿入され、シールパッキン
部材9の端面9bはホルダ先端部2cに対して気密状に
固定される。尚、この部分においても同様に接着剤を使
用しても良い。このようにしてシールパッキン部材9は
その上下端において、ホルダ2に対して気密状に固着さ
れるが、ホルダ外周面2aに接触することになるシール
パッキン部材9の内周面9cはホルダ2に対しては接着
されない。
On the other hand, the other end of the seal packing member 9 has an end face 9b so as to cover the tip 2c of the holder 2, and the center thereof is open to provide the air supply passage 4, similar to the holder 2. do. A fixing member 11 having an axial passage 11a inside is inserted into the openings of the holder 2 and the seal packing member 9, and the end surface 9b of the seal packing member 9 is airtight with respect to the holder tip 2c. fixed in shape. Note that adhesive may be used in this portion as well. In this way, the seal packing member 9 is airtightly fixed to the holder 2 at its upper and lower ends, but the inner circumferential surface 9c of the seal packing member 9 that comes into contact with the holder outer circumferential surface 2a is attached to the holder 2. It will not be glued to the other side.

【0013】空気供給通路4が形成されるホルダ2の内
部では、この空気供給通路4より分岐してホルダ外周面
2aに向かうように空気分岐通路12が形成され、最終
的にはシールパッキン部材9の内周面9cに対向するべ
くホルダ外周面2aに開口する。尚、この空気分岐通路
12は図示したように、本実施例ではホルダ2の直径方
向に2つ形成されているが、当然この数は本実施例に限
定されるものではなく、例えばホルダ軸線Aを中心とし
て放射状に多数形成しても良い。
Inside the holder 2 in which the air supply passage 4 is formed, an air branch passage 12 is formed branching from the air supply passage 4 and directed toward the holder outer circumferential surface 2a, and finally a seal packing member 9 is formed. It opens in the holder outer circumferential surface 2a to face the inner circumferential surface 9c of the holder. As shown in the figure, two air branch passages 12 are formed in the diametrical direction of the holder 2 in this embodiment, but of course this number is not limited to this embodiment; for example, the number is not limited to the holder axis A. A large number of them may be formed radially around the center.

【0014】本実施例によれば、空気供給通路4と上述
した空気分岐通路12との分岐部よりもホルダ先端部2
c側(換言すれば、装置作動時における給気下流側)に
位置する空気供給通路4内には、弁手段としてのスプー
ル弁装置13が介装される。このスプール弁装置13は
、それまでの空気供給通路4よりも膨径して形成された
弁体収納部4aに装着される圧縮スプリング14と、こ
の弁体収納部4a内で往復動可能に収納されるスプール
弁体15とを有しており、スプール弁体15は前出の固
定部材11に着座する圧縮スプリング14によって空気
分岐通路12側に付勢されている。更にこのスプール弁
装置13は、スプール弁体15の外方にこの弁体15を
バイパスして空気を下流側に流すためのバイパス通路4
bを備えている。
According to this embodiment, the holder tip 2
A spool valve device 13 as a valve means is interposed in the air supply passage 4 located on the c side (in other words, on the downstream side of the air supply during operation of the device). This spool valve device 13 includes a compression spring 14 that is attached to a valve body housing part 4a that is formed to have a larger diameter than the air supply passage 4, and a compression spring 14 that is housed in a reciprocating manner within this valve body housing part 4a. The spool valve body 15 is urged toward the air branch passage 12 by a compression spring 14 seated on the fixed member 11 mentioned above. Furthermore, this spool valve device 13 includes a bypass passage 4 outside the spool valve body 15 for bypassing this valve body 15 and allowing air to flow downstream.
It is equipped with b.

【0015】以上が本実施例における気密性試験装置1
0の構成であるが、以下図1、及び図2を参照しながら
本装置10の作動を説明する。容器1の気密性検査に際
し、まず容器1に対しベース3より突出するホルダ2が
挿入され、次いで空気供給装置5のエア源6が作動され
、ホルダ2内部に空気が供給される。
The above is the airtightness test device 1 in this embodiment.
The operation of the device 10 will be described below with reference to FIGS. 1 and 2. When testing the airtightness of the container 1, the holder 2 protruding from the base 3 is first inserted into the container 1, and then the air source 6 of the air supply device 5 is activated to supply air into the holder 2.

【0016】図1に示す空気供給の開始前段階において
、スプール弁体15は圧縮スプリング14によって図中
下方に押し下げられており、従ってバイパス通路4bは
閉じられている。この結果、ホルダ2内に供給された空
気は空気供給通路4、空気分岐通路12を介してホルダ
外周面2aとシールパッキン部材9の内周面9c間に導
入され、この内周面9cに圧力をかけながらシールパッ
キン部材9を膨張させ、最終的にはシールパッキン部材
9と容器1の内周面1bとが密着する。尚、圧縮スプリ
ング14の初期設定荷重は、少なくともシールパッキン
部材9が容器内周面9cに密着し、この部分で容器内部
16が外部よりシールされる程、空気分岐通路12内圧
力が高められるまではスプール弁体15がホルダ先端部
2c側に移動しないように設定されている。
In the stage before the start of air supply shown in FIG. 1, the spool valve body 15 is pressed down in the figure by the compression spring 14, and the bypass passage 4b is therefore closed. As a result, the air supplied into the holder 2 is introduced between the holder outer circumferential surface 2a and the inner circumferential surface 9c of the seal packing member 9 through the air supply passage 4 and the air branch passage 12, and pressure is applied to the inner circumferential surface 9c. The seal packing member 9 is expanded while applying the pressure, and finally the seal packing member 9 and the inner circumferential surface 1b of the container 1 are brought into close contact with each other. Note that the initial setting load of the compression spring 14 is set at least until the pressure inside the air branch passage 12 is increased to the extent that the seal packing member 9 is in close contact with the inner circumferential surface 9c of the container and the inside 16 of the container is sealed from the outside at this portion. is set so that the spool valve body 15 does not move toward the holder tip 2c side.

【0017】上述したような密着状態のまま給気を続行
すると、空気分岐通路12内の圧力は圧縮スプリング1
4の付勢力に打ち勝って、ついにはスプール弁体15を
押し上げる程の圧力(所定圧力)となる。その結果、そ
れまでスプール弁体15によって閉じられていたバイパ
ス通路4bは、スプール弁体15の変位によって弁体1
5上流側の空気供給通路4と連通するようになり、空気
の流れはそれまでの空気供給通路4、空気分岐通路12
へと向かう流れに代わり、シールパッキン部材9が膨張
した状態を保持させながら、空気供給通路4、バイパス
通路4b、固定部材11の軸方向通路11aを経由する
流れとなり、このようにして容器内部16に空気が充満
される(図2の状態)。
If air supply is continued in the above-mentioned close contact state, the pressure in the air branch passage 12 will be reduced by the compression spring 1.
4, the pressure (predetermined pressure) is strong enough to push up the spool valve body 15. As a result, the bypass passage 4b, which had been closed by the spool valve body 15 until then, is now closed by the valve body 1 due to the displacement of the spool valve body 15.
5 It now communicates with the air supply passage 4 on the upstream side, and the air flow is now connected to the air supply passage 4 and the air branch passage 12.
Instead of the flow toward the inside of the container 16, the flow passes through the air supply passage 4, the bypass passage 4b, and the axial passage 11a of the fixing member 11 while keeping the seal packing member 9 in an expanded state. is filled with air (the state shown in Figure 2).

【0018】このように本実施例による弁手段としての
スプール弁装置13は、シールパッキン部材9が容器内
周面1bに密着し、空気分岐通路12内圧力が上昇して
この部分で容器内部16を外部から封止するような状態
が達成されるまでの気密性試験前期(空気分岐通路内圧
力<所定圧力)において、空気供給通路4に導入された
空気を空気分岐通路12に導き、その後、空気分岐通路
内圧力が上記所定圧力以上となり容器内圧力が気密性試
験圧力に到達するまでの試験後期において、空気供給通
路4に導入された空気をバイパス通路4bを介して容器
内部16へと導く働きをする。
As described above, in the spool valve device 13 as a valve means according to the present embodiment, the seal packing member 9 is brought into close contact with the inner circumferential surface 1b of the container, and the pressure inside the air branch passage 12 is increased, so that the pressure inside the container 16 is increased at this portion. In the first half of the airtightness test (pressure inside the air branch passage <predetermined pressure) until a state where the air is sealed from the outside is achieved, the air introduced into the air supply passage 4 is guided to the air branch passage 12, and then, In the latter half of the test until the pressure inside the air branch passage reaches the predetermined pressure or higher and the pressure inside the container reaches the airtightness test pressure, the air introduced into the air supply passage 4 is guided to the inside of the container 16 via the bypass passage 4b. do the work.

【0019】空気供給装置5によって容器内部16へ一
定時間給気され、容器内圧力が気密性試験圧力に到達し
、圧力スイッチ8がON状態になったならば、切り換え
バルブ7は図の上位置を占め、容器内部16への給気が
停止される。そしてこの給気が停止した時点では、スプ
ール弁体15は圧縮スプリング14の付勢力によって空
気分岐通路12側に押し下げられ、バイパス通路4bが
閉じられ、スプール弁装置13を境として給気上流側と
給気下流側の2つの圧力空間が形成される。しかしなが
ら仮に容器1に僅かな空気漏れが生じているならば、容
器内部16の圧力は次第に低下することとなり、上記2
つの圧力空間の圧力差によってスプール弁体15は再度
上方に押しあげられ、バイパス通路4bを連通すること
となる。この結果、スプール弁装置13より給気上流側
の空間内圧力も次第に低下することとなり、ついには圧
力スイッチ8をOFFの状態にしてしまい、試験者はこ
の容器1に漏れが生じていると判断することができる。 これに対し、仮に圧力スイッチ8のON状態がその後も
続行するならば、上記2つの空間において気密性試験圧
力が保持されていることになるため、その容器1は気密
性充分であると判断することができる。尚、上述した一
連の試験作動において、空気供給装置5によって容器内
部16へ一定時間給気しても、容器内圧力が気密性試験
圧力に到達せず、圧力スイッチ8が依然としてON状態
にならない場合には、当然ながら容器1に比較的大きな
漏れが生じている可能性があり、この場合容器1は不良
品としての判定を受けることになる。
When air is supplied to the inside of the container 16 for a certain period of time by the air supply device 5, the pressure inside the container reaches the airtightness test pressure, and the pressure switch 8 is turned on, the switching valve 7 is moved to the upper position in the diagram. and the supply of air to the interior 16 of the container is stopped. When this air supply stops, the spool valve body 15 is pushed down toward the air branch passage 12 by the biasing force of the compression spring 14, the bypass passage 4b is closed, and the air supply upstream side is connected to the spool valve device 13 as a boundary. Two pressure spaces downstream of the air supply are formed. However, if there is a slight air leak in the container 1, the pressure inside the container 16 will gradually decrease, and the above
The spool valve body 15 is pushed upward again by the pressure difference between the two pressure spaces, and communicates with the bypass passage 4b. As a result, the pressure in the space upstream of the air supply from the spool valve device 13 gradually decreases, and the pressure switch 8 is finally turned off, leading the tester to conclude that there is a leak in the container 1. can do. On the other hand, if the pressure switch 8 continues to be in the ON state, it means that the airtightness test pressure is maintained in the two spaces mentioned above, and therefore, the container 1 is judged to have sufficient airtightness. be able to. In addition, in the series of test operations described above, even if air is supplied to the inside of the container 16 for a certain period of time by the air supply device 5, if the pressure inside the container does not reach the airtightness test pressure and the pressure switch 8 still does not turn on. Naturally, there is a possibility that a relatively large leak has occurred in the container 1, and in this case, the container 1 will be judged as a defective product.

【0020】このように本実施例による気密性試験装置
10は、ホルダ2への空気供給によって初めに容器内部
16を外部より閉鎖してから、次いで容器内部16へ気
密性試験用空気が供給されるため、従来見られたような
容器端部でのシール部達成のための加圧機構は不要とな
り、又シールパッキン部材9の接触対象部も容器1のエ
ッジではないため、シールパッキン部材9の耐久性も向
上する。
As described above, the airtightness test device 10 according to the present embodiment first closes the inside of the container 16 from the outside by supplying air to the holder 2, and then air for airtightness testing is supplied to the inside of the container 16. Therefore, there is no need for a pressurizing mechanism to achieve a seal at the edge of the container, which was conventionally seen, and since the contact area of the seal packing member 9 is not the edge of the container 1, the seal packing member 9 Durability is also improved.

【0021】以上、本発明を、その弁手段が圧縮スプリ
ングを備えたスプール弁装置の場合に例をとり説明した
が、弁手段としては空気分岐通路12内の圧力を検出し
てこの圧力が所定圧力以上となった時、開弁作動して空
気を容器内部16に導く電磁弁(図示せず)でも良い。 またこの他には、機密性試験装置の給気特性や容器の形
状等によって変化し得る、空気供給開始時期から空気分
岐通路12内圧力が上記所定圧力に到達するまでの時間
を予めインプットすると共に、タイマ手段を備えて、空
気供給後、上記所定時間で開弁作動し空気を容器内部1
6に導くような弁装置(図示せず)を使用しても良い。
The present invention has been described above using an example in which the valve means is a spool valve device equipped with a compression spring. An electromagnetic valve (not shown) may be used, which opens the valve and guides air into the container interior 16 when the pressure exceeds the pressure. In addition, the time from the start of air supply until the internal pressure of the air branch passage 12 reaches the above-mentioned predetermined pressure, which may change depending on the air supply characteristics of the airtightness testing device, the shape of the container, etc., may be input in advance. , is equipped with a timer means, which opens the valve at the predetermined time after air is supplied to supply air to the inside of the container 1.
A valve system (not shown) may be used, such as the one leading to 6.

【0022】[0022]

【発明の効果】以上説明したように本発明によれば、シ
ールパッキン部材の膨張によって、容器内周面において
容器内部が外部に対してシールされ、このシールは面で
あるため、シールパッキン部材の耐久性が向上する。ま
たこのシールのため容器にかかる荷重は、図示したよう
な薄肉容器の変形への影響度が高い容器軸方向荷重では
なく、容器周方向への引張り力であるため容器変形量が
極めて少ない。
As explained above, according to the present invention, the inside of the container is sealed from the outside on the inner peripheral surface of the container by the expansion of the seal packing member. Improves durability. Further, the load applied to the container due to this seal is not an axial load as shown in the figure, which has a high influence on the deformation of a thin container, but a tensile force in the circumferential direction of the container, so that the amount of container deformation is extremely small.

【図面の簡単な説明】[Brief explanation of the drawing]

【図1】本発明による気密性試験装置の作動前の状態を
示す断面図である。
FIG. 1 is a sectional view showing the airtightness testing device according to the present invention in a state before operation.

【図2】本発明による気密性試験装置の気密性試験時の
状態を示す断面図である。
FIG. 2 is a sectional view showing the state of the airtightness testing apparatus according to the present invention during an airtightness test.

【図3】従来の気密性試験装置の構成を示す断面図であ
る。
FIG. 3 is a sectional view showing the configuration of a conventional airtightness test device.

【符号の説明】[Explanation of symbols]

1…円筒状片口容器 2…ホルダ 4…空気供給通路 5…空気供給装置 9…シールパッキン部材 10…気密性試験装置 12…空気分岐通路 13…スプール弁装置 1...Cylindrical single-mouthed container 2...Holder 4...Air supply passage 5...Air supply device 9...Seal packing member 10...Airtightness test device 12...Air branch passage 13...Spool valve device

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】  円筒状片口容器の気密性試験装置であ
って、上記円筒状片口容器の内部に空気を供給する空気
供給手段と、円筒状片口容器の内部に挿入され、かつこ
の挿入方向に、上記空気供給手段からの空気を円筒状片
口容器に導く空気供給通路が形成されるホルダと、該ホ
ルダの外周面周囲に設けられ、その上下端がホルダに対
して気密状に固着される弾力性のシールパッキン部材と
、上記空気供給通路より分岐し、該弾力性のシールパッ
キン部材の内周面に対向するべくホルダの外周面に開口
する空気分岐通路と、空気供給通路と上記空気分岐通路
との分岐部よりも給気下流側の空気供給通路内に設けら
れ、空気分岐通路内圧力が所定圧力以上の時、空気供給
通路に導入された空気を容器内部へと導く弁手段とを備
えたことを特徴とする気密性試験装置。
1. An airtightness testing device for a cylindrical single-mouth container, comprising: an air supply means for supplying air into the cylindrical single-mouth container; , a holder in which an air supply passage is formed that guides air from the air supply means to the cylindrical single-mouthed container, and elasticity provided around the outer peripheral surface of the holder, the upper and lower ends of which are fixed to the holder in an airtight manner. an elastic seal packing member, an air branch passage branching from the air supply passage and opening on the outer circumference of the holder to face the inner circumference of the elastic seal packing member, an air supply passage and the air branch passage; Valve means is provided in the air supply passage downstream of the air supply branch to the air supply passage and guides the air introduced into the air supply passage into the container when the pressure inside the air branch passage is equal to or higher than a predetermined pressure. An airtightness test device characterized by:
JP40148990A 1990-12-12 1990-12-12 Airtightness test equipment for cylindrical one-sided containers Expired - Fee Related JP2893955B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP40148990A JP2893955B2 (en) 1990-12-12 1990-12-12 Airtightness test equipment for cylindrical one-sided containers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP40148990A JP2893955B2 (en) 1990-12-12 1990-12-12 Airtightness test equipment for cylindrical one-sided containers

Publications (2)

Publication Number Publication Date
JPH04215028A true JPH04215028A (en) 1992-08-05
JP2893955B2 JP2893955B2 (en) 1999-05-24

Family

ID=18511315

Family Applications (1)

Application Number Title Priority Date Filing Date
JP40148990A Expired - Fee Related JP2893955B2 (en) 1990-12-12 1990-12-12 Airtightness test equipment for cylindrical one-sided containers

Country Status (1)

Country Link
JP (1) JP2893955B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002333380A (en) * 2001-05-09 2002-11-22 Honda Motor Co Ltd Holding structure for seal material for airtightness inspection
WO2007010720A1 (en) * 2005-07-19 2007-01-25 Kayaba Industry Co., Ltd. Leakage inspection method and leakage inspection device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002333380A (en) * 2001-05-09 2002-11-22 Honda Motor Co Ltd Holding structure for seal material for airtightness inspection
JP4497749B2 (en) * 2001-05-09 2010-07-07 本田技研工業株式会社 Holding structure for sealing material for airtightness inspection
WO2007010720A1 (en) * 2005-07-19 2007-01-25 Kayaba Industry Co., Ltd. Leakage inspection method and leakage inspection device

Also Published As

Publication number Publication date
JP2893955B2 (en) 1999-05-24

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