JPH0232623Y2 - - Google Patents
Info
- Publication number
- JPH0232623Y2 JPH0232623Y2 JP1984126334U JP12633484U JPH0232623Y2 JP H0232623 Y2 JPH0232623 Y2 JP H0232623Y2 JP 1984126334 U JP1984126334 U JP 1984126334U JP 12633484 U JP12633484 U JP 12633484U JP H0232623 Y2 JPH0232623 Y2 JP H0232623Y2
- Authority
- JP
- Japan
- Prior art keywords
- container
- plunger
- head
- contents
- injection
- 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
Links
- 238000001125 extrusion Methods 0.000 claims description 18
- 238000002347 injection Methods 0.000 claims description 17
- 239000007924 injection Substances 0.000 claims description 17
- 230000000694 effects Effects 0.000 description 5
- 238000012856 packing Methods 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、収納したシリコンなどを押し出して
使用するプラスチツク製インジエクシヨン容器の
プランジヤーに関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a plunger for a plastic injection container that is used by extruding stored silicone or the like.
従来、シリコン等のインジエクシヨン容器とプ
ランジヤーの嵌合において、加工時の公差範囲は
共に±0.15mmと厳しく、プラスチツク成形時の寸
法管理が大変難しかつた。
Conventionally, when fitting a plunger with an injection container made of silicone, etc., the tolerance range during processing was both ±0.15 mm, making it extremely difficult to control dimensions during plastic molding.
また、寸法公差に微少な外れがあると、プラン
ジヤー径が大きい場合は、押し出しの際にエアー
ガンの動きが固くなり安定した摺動が不可能とな
り吐出量のムラが発生することとなり、逆にプラ
ンジヤー径が小さい場合は、問題は更に重大で、
隙間から容器筒内に空気が混入してシリコン等の
内容物が硬化する虞れがあり、またエアーガン押
し出し時に隙間から流入した空気がインジエクシ
ヨン口部から吐出する問題があつた。 In addition, if there is a slight deviation in the dimensional tolerance, and if the plunger diameter is large, the movement of the air gun will become stiff during extrusion, making it impossible to slide stably, resulting in uneven discharge amount, and conversely, the plunger For smaller diameters, the problem is even more serious;
There was a risk that air would enter the container cylinder through the gap and harden the contents such as silicone, and there was also a problem that air flowing in through the gap would be discharged from the injection exit port when the air gun was pushed out.
上記の問題は従来多発しており、当業界ではな
んらかの対策が早急に望まれているのが現状であ
る。 The above-mentioned problems have frequently occurred in the past, and there is currently an urgent need for some kind of countermeasure in this industry.
そこで本考案は、円筒状の容器筒部の一端部か
ら嵌合し、内容物を前記容器筒部の他端部の小径
のインジエクシヨン口部から押し出すようになし
た外径が容器筒部の内径と略等しい頭部を一体に
具備するインジエクシヨン容器のプランジヤーに
おいて、プランジヤーの頭部後方の外周に押し出
し方向に向かつて容器筒部の内径よりも大きく拡
張し得る可撓性の鍔状突起を設ける一方、前記頭
部に容器筒部の内容物を前記鍔状突起の押し出し
側に導通し得る導通路を設けてなるプラスチツク
製インジエクシヨン容器のプランジヤーを提供し
ようとするものである。
Therefore, the present invention is designed to fit into a cylindrical container tube from one end and push out the contents from a small diameter injection opening at the other end of the container tube. In a plunger for an injection container that is integrally equipped with a head substantially equal to , a flexible brim-shaped projection that can expand larger than the inner diameter of the container cylinder in the extrusion direction is provided on the outer periphery of the rear of the head of the plunger. Another object of the present invention is to provide a plunger for a plastic injection container, which has a conductive path provided in the head part to allow the contents of the container cylinder to be conducted to the extrusion side of the flanged projection.
上記の構成からなる本考案のプランジヤーを容
器筒部の一端部から挿通する場合には、先ずプラ
ンジヤー頭部が筒体内壁に嵌合することによつて
その挿通方向が正しく設定されるから、頭部後方
の鍔状突起はそのまま一体に筒端部から挿通し、
筒体内に円滑に嵌合するように案内されることと
なる。プランジヤーが容器筒部に嵌合して内容物
を押し出す際には、頭部の導通路を通つて鍔状突
起の押し出し側に導通した内容物が鍔状突起を外
側に押圧し、その押圧力により該鍔状突起が撓ん
で筒部内壁に密着するから、摺動時に小さい力で
大きな締め代を得ることができ、且つ鍔状突起は
挿入に伴つて押し出し側に押し出し圧を受けてい
るから、エアーガン使用時に空気の混入を確実に
防止することができる。従つて、現在インジエク
シヨン容器の底部に空気混入防止用のワツクスに
よるシールを行つてきたが、本考案では鍔状突起
でシールを確実にできるから、このようなシール
部材も不要とすることができる。また、インジエ
クシヨン容器とプランジヤーとの嵌合において、
公差範囲を鍔状突起の撓む分だけ広く設定するこ
とができる。従つて、公差管理及び加工成形条件
の設定を容易にすることができる。
When the plunger of the present invention having the above-mentioned configuration is inserted from one end of the container cylinder, the insertion direction is set correctly by first fitting the plunger head into the inner wall of the cylinder. Insert the brim-shaped protrusion at the rear of the tube from the end of the tube as it is,
It will be guided so that it fits smoothly into the cylindrical body. When the plunger fits into the cylindrical part of the container and pushes out the contents, the contents that have passed through the conduit in the head to the extrusion side of the flanges press the flanges outward, and the pressing force Because the brim-like projection bends and comes into close contact with the inner wall of the cylindrical portion, a large interference can be obtained with a small force during sliding, and the brim-like projection receives extrusion pressure on the extrusion side as it is inserted. , it is possible to reliably prevent air from entering when using an air gun. Therefore, at present, the bottom of the injection container is sealed with wax to prevent air from entering the container, but in the present invention, since the seal can be ensured using the brim-shaped projection, such a sealing member can be made unnecessary. In addition, when fitting the injection container and the plunger,
The tolerance range can be set wider by the amount of deflection of the brim-shaped projection. Therefore, it is possible to easily manage tolerances and set processing and forming conditions.
［実施例］
図において、１はプランジヤー本体で、頭部２
がやや肉圧に容器筒部の内周を閉鎖するように形
成され、底部３が下方に開放して形成されてい
る。４が頭部２と底部３との中間に設けた可撓性
の鍔状突起で、頭部２側の底深の凹溝５と底部３
側の底浅の凹溝６との間に、撓みに伴つて押し出
し側に向かつて開くように設けてある。プランジ
ヤー本体１の鍔状突起４は、前記凹溝５，６の溝
端部の直径Ｄ（例えば47.6mm）から、拡張時には
例えば直径48.6mmのように、1.0mm程度も大きく
撓み得るように設定してある。７はプランジヤー
本体１の頭部２に設けた導通路で、インジエクシ
ヨン容器の内容物が押し出しの際に鍔状突起４の
押し出し側の凹溝５内に流入し得るように設けて
ある。[Example] In the figure, 1 is the plunger body, and the head 2 is
is formed so as to close the inner periphery of the container cylindrical portion with a slight wall pressure, and the bottom portion 3 is formed to be open downward. 4 is a flexible brim-shaped projection provided between the head 2 and the bottom 3, and a deep concave groove 5 on the head 2 side and the bottom 3
It is provided between the shallow groove groove 6 on the side so as to open toward the extrusion side as it bends. The brim-shaped protrusion 4 of the plunger body 1 is set so that it can be deflected by about 1.0 mm from the diameter D (for example, 47.6 mm) of the groove ends of the grooves 5 and 6 to a diameter of 48.6 mm when expanded. There is. Reference numeral 7 denotes a conductive path provided in the head 2 of the plunger body 1, and is provided so that the contents of the injection container can flow into the concave groove 5 on the extrusion side of the flanged protrusion 4 during extrusion.
従つて、このプランジヤー本体１を内径47.6mm
〜48.6mmのインジエクシヨン容器の筒部内に挿入
した場合には、外径が容器筒部の内径と略等しい
頭部２が先ず筒部内壁に嵌合して挿入方向を正確
に設定し、後に続く鍔状突起４の嵌合が円滑に行
われるように案内すると共に、導通路７から鍔状
突起４の押し出し側の凹溝５内に内容物を導入す
ることとなる。凹溝５内に流入した内容物は鍔状
突起４を外周方向に拡張し、鍔状突起４が容器内
壁に密着することとなり、押し出しに際して小さ
な力で大きな締め代が得られ、空気の混入を防止
することとなる。また、鍔状突起４が拡張する撓
み分だけインジエクシヨン容器筒部とプランジヤ
ー外径の寸法管理及び成形条件を容易にすること
ができる。 Therefore, this plunger body 1 has an inner diameter of 47.6 mm.
When inserted into the cylindrical portion of a ~48.6 mm injection container, the head 2, whose outer diameter is approximately equal to the inner diameter of the container cylindrical portion, first fits into the inner wall of the cylindrical portion to accurately set the insertion direction, and then continues. This guides the flange-shaped projection 4 so that it fits smoothly, and introduces the contents from the conduction path 7 into the groove 5 on the extrusion side of the flange-shaped projection 4. The contents flowing into the groove 5 expand the flanged projection 4 in the outer circumferential direction, and the flanged projection 4 comes into close contact with the inner wall of the container, and a large interference can be obtained with a small force during extrusion, thereby preventing air from entering. This will prevent this. Further, the dimensional control and molding conditions of the injection container cylindrical portion and the plunger outer diameter can be made easier by the amount of deflection caused by the expansion of the brim-shaped projection 4.
［効果］
以上の通り、本考案に係るプラスチツク製イン
ジエクシヨン容器のプランジヤーによれば、円筒
状の容器筒部の一端部から嵌合し、内容物を前記
容器筒部の他端部の小径のインジエクシヨン口部
から押し出すようになした外径が容器筒部の内径
と略等しい頭部を一体に具備するインジエクシヨ
ン容器のプランジヤーにおいて、プランジヤーの
前記頭部後方の外周に押し出し方向に向かつて容
器筒部の内径より大きく拡張し得る可撓性の鍔状
突起を設ける一方、前記頭部に容器筒部の内容物
を前記鍔状突起の押し出し側に導通し得る導通路
を設けた構成を有するから、円筒状の容器筒部の
一端部から本考案のプランジヤーを嵌合すると
き、予め頭部が嵌合して後続の鍔状突起が嵌合す
るときのガイドとなるから、鍔状突起が筒端部に
当接して反り返るようなことがなく、鍔状突起が
あるプランジヤーを円滑に容器筒部内に嵌着する
ことができ、プランジヤーの容器への装着作業を
容易にする効果があり、例えば、特開昭49−
64567号公報に記載のプランジヤー本体の前方に
予め容器筒体内に折り畳んで装着するゴム製のパ
ツキング体に鍔状突起を設けて、該パツキング体
を後ろからプランジヤー本体で後押しするものと
は全く異別の構成と効果を有するものであり、ま
た、本考案のプランジヤーによれば、内容物を押
し出す際には、頭部に設けた導通路から鍔状突起
の押し出し側に導入される内容物の圧力により外
周方向にたわんだ前記鍔状突起が容器内壁に密着
することとなるが、このとき、鍔状突起の押し出
し側に加わる内容物による押圧力は、頭部に設け
た導通路を介して加わるから、頭部全体の面積に
対する導通路の開口面積の比率で鍔状突起は容器
内壁に圧接するから、前記鍔状突起を有するパツ
キング体を後ろからプランジヤー本体で後押し
し、内容物が鍔状部の全面に直接加わる従来のも
のに比較し、少ない押圧力で密着すると共に、そ
の前方で容器に内接する頭部との共働により確実
な押し出し移動を可能にするプランジヤーを提供
する効果がある。従つて、プランジヤー及び容器
筒体の公差管理及び加工成形条件の設定を容易に
するプランジヤーとして優れた効果があり、実用
上益するところ大なるものがある。[Effect] As described above, according to the plunger for the plastic injection container according to the present invention, the plunger is fitted from one end of the cylindrical container tube and the contents are transferred to the small diameter injection container at the other end of the container tube. In a plunger for an injection container that is integrally equipped with a head whose outer diameter is approximately equal to the inner diameter of the container cylindrical portion and which is pushed out from the mouth, there is a portion of the container cylindrical portion that is oriented toward the outer periphery of the rear head of the plunger in the extrusion direction. Since it has a configuration in which a flexible flanged protrusion that can expand larger than the inner diameter is provided, and a conduction path that can conduct the contents of the container cylindrical portion to the extrusion side of the flanged protrusion is provided in the head, the cylindrical When fitting the plunger of the present invention from one end of the shaped container cylinder, the head is fitted in advance and serves as a guide when the subsequent collar-shaped projection is fitted. The plunger with the flange-like protrusion can be smoothly fitted into the container cylindrical part without warping when it comes into contact with the container, and has the effect of making it easier to attach the plunger to the container. Showa 49-
This is completely different from the method described in Publication No. 64567, in which a rubber packing body that is folded and attached to the container cylinder in advance is provided with a brim-like protrusion in front of the plunger body, and the packing body is pushed by the plunger body from behind. In addition, according to the plunger of the present invention, when pushing out the contents, the pressure of the contents introduced from the conduction path provided in the head to the extrusion side of the flanged projection is The flanged protrusion bent in the outer circumferential direction comes into close contact with the inner wall of the container, but at this time, the pressing force from the contents applied to the extrusion side of the flanged protrusion is applied via the conduction path provided in the head. Therefore, the flanged projection comes into pressure contact with the inner wall of the container at the ratio of the opening area of the conductive path to the area of the entire head, so the packing body having the flanged projection is pushed from behind by the plunger body, and the contents are pushed into the flanged portion. Compared to conventional plungers that apply directly to the entire surface of the container, the plunger has the effect of providing a close contact with a smaller pressing force and enabling reliable extrusion movement by cooperating with the head inscribed in the container in front of the plunger. Therefore, it has an excellent effect as a plunger that facilitates the tolerance control of the plunger and the container cylinder and the setting of processing and forming conditions, and has great practical benefits.
第１図は本考案品の一実施例をしめす一部縦断
正面図、第２図はその平面図、第３図はその要部
の拡大縦断面図である。
１……プランジヤー本体、２……頭部、４……
鍔状突起、７……導通路。
FIG. 1 is a partially longitudinal front view showing an embodiment of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is an enlarged longitudinal sectional view of the main part thereof. 1... Plunger body, 2... Head, 4...
Flange-like process, 7... conduction path.
Claims (1)
を前記容器筒部の他端部の小径のインジエクシヨ
ン口部から押し出すようになした外径が容器筒部
の内径と略等しい頭部を一体に具備するインジエ
クシヨン容器のプランジヤーにおいて、プランジ
ヤーの前記頭部後方の外周に押し出し方向に向か
つて容器筒部の内径より大きく拡張し得る可撓性
の鍔状突起を設ける一方、前記頭部に容器筒部の
内容物を前記鍔状突起の押し出し側に導通し得る
導通路を設けてなるプラスチツク製インジエクシ
ヨン容器のプランジヤー。 A head that is fitted from one end of a cylindrical container tube and pushes out the contents from a small-diameter injection opening at the other end of the container tube, and whose outer diameter is approximately equal to the inner diameter of the container tube. In the plunger for an injection container, a flexible flanged projection that can expand in the extrusion direction to a larger extent than the inner diameter of the container cylinder is provided on the outer periphery of the rear of the head of the plunger, and the head A plunger for a plastic injection container, which is provided with a conductive path through which the contents of the container cylindrical portion can be conducted to the extrusion side of the flanged projection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12633484U JPS6140555U (en) | 1984-08-20 | 1984-08-20 | Injection container plunger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12633484U JPS6140555U (en) | 1984-08-20 | 1984-08-20 | Injection container plunger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6140555U JPS6140555U (en) | 1986-03-14 |
| JPH0232623Y2 true JPH0232623Y2 (en) | 1990-09-04 |
Family
ID=30685013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12633484U Granted JPS6140555U (en) | 1984-08-20 | 1984-08-20 | Injection container plunger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6140555U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0727191Y2 (en) * | 1988-06-28 | 1995-06-21 | ぺんてる株式会社 | Cap mounting structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4964567A (en) * | 1972-10-24 | 1974-06-22 |
-
1984
- 1984-08-20 JP JP12633484U patent/JPS6140555U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4964567A (en) * | 1972-10-24 | 1974-06-22 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6140555U (en) | 1986-03-14 |
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