JPS62187718U - - Google Patents
Info
- Publication number
- JPS62187718U JPS62187718U JP7454286U JP7454286U JPS62187718U JP S62187718 U JPS62187718 U JP S62187718U JP 7454286 U JP7454286 U JP 7454286U JP 7454286 U JP7454286 U JP 7454286U JP S62187718 U JPS62187718 U JP S62187718U
- Authority
- JP
- Japan
- Prior art keywords
- backflow prevention
- screw head
- diameter portion
- small diameter
- prevention device
- 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.)
- Pending
Links
- 230000002265 prevention Effects 0.000 claims description 19
- 238000001746 injection moulding Methods 0.000 claims description 4
- 239000012768 molten material Substances 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
Description
第１図は、本考案による射出成形機の逆流防止
装置の一実施例を示す縦断面図、第２図は、その
逆流防止装置に用いられる逆流防止リングの斜視
図、第３図は、その逆流防止装置の作用を説明す
るための説明図、第４図は、本考案による逆流防
止装置に用いられる逆流防止リングの他の実施例
を示す切り欠き斜視図、第５図は、従来の射出成
形機の逆流防止装置の一例を示す縦断面図、第６
図は、その従来の逆流防止装置に用いられている
逆流防止リングの斜視図、第７図は、その従来の
逆流防止装置の作用を説明するための、第３図と
同様な説明図である。
１…射出成形機、２…シリンダ、３…スクリユ
、５…スクリユ本体、６…スクリユヘツド、６ａ
…スクリユヘツド小径部、６ｂ…スクリユヘツド
大径部、７…逆流防止リング、９…材料流路、１
０…突起、１１…突起。
FIG. 1 is a longitudinal cross-sectional view showing an embodiment of a backflow prevention device for an injection molding machine according to the present invention, FIG. 2 is a perspective view of a backflow prevention ring used in the backflow prevention device, and FIG. 3 is a perspective view of the backflow prevention ring used in the backflow prevention device. An explanatory diagram for explaining the action of the backflow prevention device, FIG. 4 is a cutaway perspective view showing another embodiment of the backflow prevention ring used in the backflow prevention device according to the present invention, and FIG. 5 is a conventional injection Vertical sectional view showing an example of a backflow prevention device of a molding machine, No. 6
The figure is a perspective view of a backflow prevention ring used in the conventional backflow prevention device, and FIG. 7 is an explanatory diagram similar to FIG. 3 for explaining the action of the conventional backflow prevention device. . 1... Injection molding machine, 2... Cylinder, 3... Screw, 5... Screw body, 6... Screw head, 6a
...Screw head small diameter part, 6b...Screw head large diameter part, 7...Backflow prevention ring, 9...Material flow path, 1
0...Protrusion, 11...Protrusion.
Claims (1)
リユヘツドが、そのスクリユ本体側の部分が小径
部とされるとともに、その小径部の先端側に隣接
する部分が大径部とされており、 そのスクリユヘツドの小径部の外周に、そのス
クリユヘツドとの間に溶融材料の流路を形成する
中空円筒状の逆流防止リングが回転自在に装着さ
れている、射出成形機の逆流防止装置において、
； 前記逆流防止リングの、前記スクリユヘツド大
径部側の端部内面に、前記スクリユヘツド小径部
の外周面に向けて突出する突起が設けられている
、 射出成形機の逆流防止装置。 (2) 前記突起が、前記逆流防止リングの全長に
わたつて延びている、 実用新案登録請求の範囲第１項記載の逆流防止
装置。[Claims for Utility Model Registration] (1) The screw head attached to the tip of the screw main body has a small diameter portion on the side of the screw main body, and a portion adjacent to the tip side of the small diameter portion as a large diameter portion. A backflow prevention device for an injection molding machine, in which a hollow cylindrical backflow prevention ring that forms a flow path for molten material between the screw head and the screw head is rotatably attached to the outer periphery of the small diameter part of the screw head. In,
A backflow prevention device for an injection molding machine, wherein an inner surface of the end of the backflow prevention ring on the side of the large diameter portion of the screw head is provided with a protrusion that projects toward the outer peripheral surface of the small diameter portion of the screw head. (2) The backflow prevention device according to claim 1, wherein the protrusion extends over the entire length of the backflow prevention ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7454286U JPS62187718U (en) | 1986-05-20 | 1986-05-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7454286U JPS62187718U (en) | 1986-05-20 | 1986-05-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62187718U true JPS62187718U (en) | 1987-11-30 |
Family
ID=30919846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7454286U Pending JPS62187718U (en) | 1986-05-20 | 1986-05-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62187718U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0428518A (en) * | 1990-05-25 | 1992-01-31 | Ube Ind Ltd | Non-return ring for resin mold screw |
-
1986
- 1986-05-20 JP JP7454286U patent/JPS62187718U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0428518A (en) * | 1990-05-25 | 1992-01-31 | Ube Ind Ltd | Non-return ring for resin mold screw |