JPS60248320A - Extrusion molding machine - Google Patents
Extrusion molding machineInfo
- Publication number
- JPS60248320A JPS60248320A JP10694184A JP10694184A JPS60248320A JP S60248320 A JPS60248320 A JP S60248320A JP 10694184 A JP10694184 A JP 10694184A JP 10694184 A JP10694184 A JP 10694184A JP S60248320 A JPS60248320 A JP S60248320A
- Authority
- JP
- Japan
- Prior art keywords
- molding machine
- extrusion molding
- vacuum chamber
- material injection
- secondary screw
- 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
Landscapes
- Press-Shaping Or Shaping Using Conveyers (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】 〔技術分野〕 本発明は無機材料の押出成形機に関するものである。[Detailed description of the invention] 〔Technical field〕 The present invention relates to an extrusion molding machine for inorganic materials.
従来、無機材料の押出成形機は、非可塑性粉体にバイン
ター、溶剤又は水を適当に加えて混練した材料を第３図
の材料投入口（１）より供給し、−次スクリユー（２）
で前方へ押出して真空室（３）に押出す。真空室（３）
で材料内部の気泡を除去した後、材料噴込み０−ル（４
）により二次スクリュー（５）に押し込み、二次スクリ
ュー（５）で前方へ送られた材料が成形金型（６）に押
出されて所望の形状に成形される。Conventionally, in an extrusion molding machine for inorganic materials, a material prepared by appropriately adding binder, solvent, or water to non-plastic powder and kneading is fed through the material input port (1) in Fig.
to push it forward into the vacuum chamber (3). Vacuum chamber (3)
After removing air bubbles inside the material with
) is pushed into the secondary screw (5), and the material sent forward by the secondary screw (5) is extruded into the molding die (6) and molded into the desired shape.
この際、二次スクリュー（６）に押し込まれた材料に余
りが生じると、真空室（３）側へ押し戻す力が発生し、
材料噴込み０−ル（４）が押し込もうとする力とがぶつ
かる。ここで、材料噴込みロール（４）の端面ば、従来
、第４図のように平面であるため、上述のような余分の
材料は材料噴込みロール（４）と真空室（３）の壁面（
７）との間に押し込まれて材料噴込みロール（４）の端
面に滞留し、この滞留した材料が長時間脱泡されること
により乾燥して固くなり、真空室（３）の壁面（７）が
摩耗して材料内に混入したり、乾燥して固くなった材料
が混入後成形金型（６）内部に目づまりする等の問題が
発生していた。At this time, if there is a surplus of material pushed into the secondary screw (6), a force is generated that pushes it back toward the vacuum chamber (3).
The material injection force collides with the force that the material injection wheel (4) tries to push. Here, since the end surface of the material injection roll (4) is conventionally flat as shown in FIG. (
The material is pushed between the wall surface (7) of the vacuum chamber (3) and accumulates on the end surface of the material injection roll (4), and as the material is defoamed for a long period of time, it dries and becomes hard. ) is worn out and gets mixed into the material, or the inside of the molding die (6) gets clogged after the dried and hardened material gets mixed in.
本発明の目的とするところは、真空室と材料噴込みロー
ルとの間の材料滞留を防止して安定した材料を供給する
とともに成形金型内の目づまりを無くシ、更に、真空室
壁面の摩耗を無くして金属粉の混入を無くすることにあ
る。It is an object of the present invention to prevent material stagnation between the vacuum chamber and the material injection roll to supply a stable material, eliminate clogging in the mold, and further abrade the wall surface of the vacuum chamber. The aim is to eliminate the contamination of metal powder by eliminating
実施例
第２図は本発明の材料噴込みロール（４）の一実施例の
斜視図で、端面に複数のスパイラル突起（８）を放射状
に設けたものであり、第１図のように真空室（３）と二
次スクリュー（５）の間に設ける。このスパイラル突起
（８）は、余分の材料が材料噴込みＤ−ル（４）と真空
室（３）の壁面（７）との隙間へ押し込まれようとする
のを外へ押し出す力を与えるために設けたものである。Embodiment FIG. 2 is a perspective view of an embodiment of the material injection roll (4) of the present invention, in which a plurality of spiral protrusions (8) are provided radially on the end surface, and as shown in FIG. It is provided between the chamber (3) and the secondary screw (5). This spiral protrusion (8) provides a force to push out the excess material that is trying to be pushed into the gap between the material injection D-rule (4) and the wall surface (7) of the vacuum chamber (3). It was established in
尚、スパイラル突起（８）は、材料噴込みロール（４）
の両端面に設けたり、真空室（３）内の材料噴込みロー
ル（４）に限らず、材、料喰込み０−ル（４）と同様の
働きをする０−ルにも効果がある。Note that the spiral protrusion (8) is connected to the material injection roll (4).
It is effective not only on the material injection roll (4) in the vacuum chamber (3) but also on the rollers that function in the same way as the rollers (4) that feed the material. .
動作
スパイラル突起（８）をインボリュート曲線にし、突起
高さを１ｔＩ、Ｒ１５ｗ、、１０．にした場合、５時間
の連続運転後チェックした。１．の場合は部分的に乾燥
した材料が付着していたが、５藺およびｌＯｗの場合は
異状は認められなかった。又、スパイラル突起（８）を
等角うずまき線にし、高さを上記と同じにした場合にも
同等の結果が得られた。Operation The spiral protrusion (8) is made into an involute curve, and the protrusion height is 1tI, R15w, 10. , it was checked after 5 hours of continuous operation. 1. In the case of No. 5, partially dried material was adhered, but no abnormality was observed in the cases of No. 5 and No. 1. Furthermore, similar results were obtained when the spiral protrusion (8) was made into an equiangular spiral line and the height was the same as above.
上述のように本発明は、材料噴込みロールの端面に複数
のスパイラル突起を放射状に設けたから、真空室と材料
噴込みＤ−ルとの間の材料滞留を防止できて安定した材
料を供給できる上、乾燥して固くなった材料の混入が無
くなって成形金型内の目づまりが無くなり、更に１真空
室壁面の摩耗が無くなって金属粉の混入が無くなるとい
う効果を奏するものである。As described above, the present invention provides a plurality of spiral protrusions radially on the end face of the material injection roll, so that material retention between the vacuum chamber and the material injection roll can be prevented and a stable material can be supplied. Moreover, there is no contamination of dried and hardened material, which eliminates clogging in the mold, and furthermore, there is no abrasion of the wall surface of the vacuum chamber, which eliminates the contamination of metal powder.
第１図は本発明の材料噴込みロールを具備した押出成形
機の要部拡大斜視図、第２図は同上の押出成形機の材料
噴込みロールの要部拡大斜視図、第３図は一般の押出成
形機の縦断面図、第４図は同上の材料噴込みロールの要
部拡大斜視図である（２）・・・−次スクリユー、（３
）・・・真空室、（４）・・・材料噴込みロール、（５
）・・・二次スクリュー、（６）・・・底形金型、（８
）・・・スパイラル突起。
代理人 弁理士 石 １）長 上
第３図
第４図Fig. 1 is an enlarged perspective view of the main parts of an extrusion molding machine equipped with the material injection roll of the present invention, Fig. 2 is an enlarged perspective view of the main parts of the material injection roll of the same extrusion molding machine, and Fig. 3 is a general view. Fig. 4 is an enlarged perspective view of the main parts of the material injection roll shown in Fig. 4.
)...Vacuum chamber, (4)...Material injection roll, (5
)...Secondary screw, (6)...Bottom mold, (8
)...Spiral protrusion. Agent Patent Attorney Ishi 1) Chief Figure 3 Figure 4
Claims (1)
混練した材料を押出す一次スクリユーと、前記−次スク
リユーで押出された材料内部の気泡を除去する真空室と
、前記真空室の材料を二次スクリューに押し込む材料噴
込みロールと、前記材料噴込みＤ−ルにより押し込まれ
た材料を成形金型に押出す二次スクリューとを具備した
押出成形機において、材料噴込み０−ルの端面に複数の
スパイラル突起を放射状に設けて成ることを特徴とする
押出成形機。A primary screw that extrudes a material obtained by adding binder, solvent, or water to the fi + non-machi plastic powder, a vacuum chamber that removes air bubbles inside the material extruded by the secondary screw, and a vacuum chamber that removes air bubbles inside the material extruded by the secondary screw. In an extrusion molding machine equipped with a material injection roll that is pushed into a secondary screw, and a secondary screw that extrudes the material pushed by the material injection D-ru into a molding die, the end face of the material injection O-ru An extrusion molding machine characterized by having a plurality of spiral protrusions arranged in a radial manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10694184A JPS60248320A (en) | 1984-05-25 | 1984-05-25 | Extrusion molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10694184A JPS60248320A (en) | 1984-05-25 | 1984-05-25 | Extrusion molding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60248320A true JPS60248320A (en) | 1985-12-09 |
| JPS6246328B2 JPS6246328B2 (en) | 1987-10-01 |
Family
ID=14446403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10694184A Granted JPS60248320A (en) | 1984-05-25 | 1984-05-25 | Extrusion molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60248320A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008221476A (en) * | 2007-03-08 | 2008-09-25 | Ngk Insulators Ltd | Vacuum auger machine and manufacturing method of columnar body containing ceramic raw material |
| JP2014133367A (en) * | 2013-01-10 | 2014-07-24 | Ishikawa Toki Tekkosho:Kk | Extrusion molding machine, and extrusion molding method |
-
1984
- 1984-05-25 JP JP10694184A patent/JPS60248320A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008221476A (en) * | 2007-03-08 | 2008-09-25 | Ngk Insulators Ltd | Vacuum auger machine and manufacturing method of columnar body containing ceramic raw material |
| JP2014133367A (en) * | 2013-01-10 | 2014-07-24 | Ishikawa Toki Tekkosho:Kk | Extrusion molding machine, and extrusion molding method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6246328B2 (en) | 1987-10-01 |
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