JPS62142519U - - Google Patents
Info
- Publication number
- JPS62142519U JPS62142519U JP3137386U JP3137386U JPS62142519U JP S62142519 U JPS62142519 U JP S62142519U JP 3137386 U JP3137386 U JP 3137386U JP 3137386 U JP3137386 U JP 3137386U JP S62142519 U JPS62142519 U JP S62142519U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- sleeve
- valve seat
- tip
- check valve
- 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
Links
- 238000000034 method Methods 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims 1
- 230000002265 prevention Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
Description
第１図は本考案の実施例を示す逆流防止弁の可
塑化工程時の側断面図、第２図は同射出工程時の
側断面図、第３図は第１図と異なる実施例におけ
る逆止弁の一部のみ示す側断面図、第４図は従来
の逆流防止弁の可塑化工程時における作動状態を
示す側断面図、第５図は同射出工程時の作動状態
を示す側断面図である。
図の主要部分の説明、１……逆止弁、ｄ……ス
クリユー、２……逆止弁、ｆ……シリンダ、ａ…
…弁座、１ａ……後端部、ｃ……保持環、１ｂ…
…中央部、ｉ……スリーブ、１ｃ……前端部、ｊ
……連結棒。
Fig. 1 is a sectional side view of a non-return valve according to an embodiment of the present invention during the plasticizing process, Fig. 2 is a sectional side view during the same injection process, and Fig. 3 is a reverse sectional view of a non-return valve in an embodiment different from Fig. 1. A side sectional view showing only a part of the stop valve, FIG. 4 is a side sectional view showing the operating state of a conventional check valve during the plasticizing process, and FIG. 5 is a side sectional view showing the operating state during the same injection process. It is. Explanation of the main parts of the diagram: 1...Check valve, d...Screw, 2...Check valve, f...Cylinder, a...
...Valve seat, 1a...Rear end, c...Retaining ring, 1b...
...Central part, i...Sleeve, 1c...Front end, j
...Connecting rod.
Claims (1)
の先にスリーブを介し連結棒によつて取り付けら
れた保持環と、内径が前記スリーブの外径より大
きく、同スリーブに嵌合された逆止弁を持つ逆流
防止弁において、前記弁座と当接する後端部を厚
肉円筒形状にし、外周とシリンダとの間隙を大き
くするとともに、少なくとも中央部を薄肉円筒形
状とした逆止弁を具え、射出工程時に同薄肉円筒
形状部をシリンダ側へ弾性変形するようにしたこ
とを特徴とする射出成形機用逆流防止弁。 A valve seat provided at the tip of the screw, a retaining ring attached to the tip of the valve seat by a connecting rod through a sleeve, and a reverse ring with an inner diameter larger than the outer diameter of the sleeve and fitted to the sleeve. A check valve having a stop valve, the check valve having a thick cylindrical rear end that comes into contact with the valve seat, increasing the gap between the outer periphery and the cylinder, and having at least a central portion in a thin cylindrical shape. A backflow prevention valve for an injection molding machine, characterized in that the thin cylindrical portion is elastically deformed toward the cylinder side during the injection process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3137386U JPH0351136Y2 (en) | 1986-03-05 | 1986-03-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3137386U JPH0351136Y2 (en) | 1986-03-05 | 1986-03-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62142519U true JPS62142519U (en) | 1987-09-08 |
| JPH0351136Y2 JPH0351136Y2 (en) | 1991-10-31 |
Family
ID=30837042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3137386U Expired JPH0351136Y2 (en) | 1986-03-05 | 1986-03-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0351136Y2 (en) |
-
1986
- 1986-03-05 JP JP3137386U patent/JPH0351136Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0351136Y2 (en) | 1991-10-31 |
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