JPH0225684B2 - - Google Patents
Info
- Publication number
- JPH0225684B2 JPH0225684B2 JP58108387A JP10838783A JPH0225684B2 JP H0225684 B2 JPH0225684 B2 JP H0225684B2 JP 58108387 A JP58108387 A JP 58108387A JP 10838783 A JP10838783 A JP 10838783A JP H0225684 B2 JPH0225684 B2 JP H0225684B2
- Authority
- JP
- Japan
- Prior art keywords
- groove
- rotating wheel
- shoe
- extrusion
- burr
- 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 - Lifetime
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Landscapes
- Extrusion Of Metal (AREA)
- Powder Metallurgy (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
この発明は回転ホイール式金属押出し成形方法
に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a rotating wheel metal extrusion method.
従来技術
従来、外周に溝を有する回転ホイールに固定シ
ユーを隣接し、シユーと溝によつて形成された押
出し通路に粉粒金属原料を供給し、シユーに形成
した孔から金属を押出し成形する方法が採用され
ている。このような方法において問題となるのは
押出し通路内に存在する空気が押出し成形の際気
泡となつて金属に含まれ、成形品の品質低下とな
ることである。Prior Art Conventionally, a fixed shoe is placed adjacent to a rotating wheel having a groove on the outer periphery, powder metal raw material is supplied to an extrusion passage formed by the shoe and the groove, and metal is extruded from holes formed in the shoe. has been adopted. A problem with such a method is that the air present in the extrusion passage becomes bubbles during extrusion molding and becomes contained in the metal, resulting in a deterioration in the quality of the molded product.
このような問題点を改善するために押出し通路
内の空気を脱気して成形金属内に空気が巻込まれ
ないようにした押出し成形方法が創案されている
が、脱気を完全にするために押出し通路の密封を
完璧にすることは困難であつた。 In order to improve these problems, an extrusion molding method has been devised that deaerates the air in the extrusion passage to prevent air from being drawn into the molded metal. It has been difficult to completely seal the extrusion passage.
発明の目的
この発明は以上のような問題点を改善するため
になされたもので、押出し通路の密封を完璧に行
い、通路内の脱気を完全にして良質の押出し成形
品を得ることが可能な回転ホイール式金属押出し
成形方法を提供することを目的とする。Purpose of the Invention This invention was made to improve the above-mentioned problems, and it is possible to completely seal the extrusion passage and completely deaerate the passage to obtain a high-quality extruded product. An object of the present invention is to provide a rotating wheel type metal extrusion molding method.
発明の構成
この発明にかかる回転ホイール式金属押出し成
形方法は脱気した押出し通路の回転方向上流端
に、固定シユーより回転ホイールの溝内に補助ア
バツトメントを突設すると共に、この補助アバツ
トメントより回転方向上流側の溝をシユーで蓋被
して滞溜室を形成し、補助アバツトメントによつ
て回転ホイールに付着したバリの一部を削り取
り、このバリを前記滞溜室に滞溜させて該バリに
よつて押出し通路の回転方向上流端の密封を行う
ことによつて上記の目的を達成するものである。Structure of the Invention The rotating wheel type metal extrusion molding method according to the present invention includes providing an auxiliary abutment that protrudes from a fixed shoe into the groove of the rotating wheel at the upstream end in the rotational direction of a deaerated extrusion passage. A retention chamber is formed by covering the groove on the upstream side with a shoe, and a part of the burr attached to the rotating wheel is scraped off by the auxiliary abutment, and the burr is retained in the retention chamber and the burr is Therefore, the above object is achieved by sealing the upstream end of the extrusion passage in the rotational direction.
実施例
以下、図に示す実施例に基づきこの発明を詳細
に説明する。Embodiments Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.
図において１は回転ホイール、２は固定シユー
である。 In the figure, 1 is a rotating wheel, and 2 is a fixed shoe.
回転ホイール１は円盤状の部材であり、その外
周面１２の周方向に断面Ｕ字状の溝１１が凹設さ
れている。シユー２は回転ホイール１に隣接さ
れ、溝１１内に材料の押出し通路３０が形成され
ている。従つてシユー２の回転ホイール１と相対
向する面は回転ホイール１の外周面１２と略同半
径を有する摺接面２１が形成されている。この摺
接面２１に溝１１に対応して突条２２が突設さ
れ、この突条２２上に補助アバツトメント３、ア
バツトメント４が突設され、材料供給孔５が溝１
１に連通せしめられている。 The rotating wheel 1 is a disc-shaped member, and a groove 11 having a U-shaped cross section is recessed in the circumferential direction of an outer peripheral surface 12 thereof. The shoe 2 is adjacent to the rotating wheel 1 and has a material extrusion channel 30 formed in the groove 11. Therefore, the surface of the shoe 2 facing the rotating wheel 1 is formed with a sliding surface 21 having approximately the same radius as the outer circumferential surface 12 of the rotating wheel 1. A protrusion 22 is provided on the sliding surface 21 in correspondence with the groove 11, an auxiliary abutment 3 and an abutment 4 are provided on the protrusion 22, and a material supply hole 5 is provided in the groove 1.
1.
まず、突条２２は回転ホイール１の溝１１に対
応してシユー２の摺接面２１上に突設されてい
る。突条２２の高さは溝１１の深さよりは低く、
その幅は溝１１の幅よりも若干小さく形成されて
いる。 First, the protrusions 22 are provided to protrude on the sliding surface 21 of the shoe 2 in correspondence with the grooves 11 of the rotary wheel 1. The height of the protrusion 22 is lower than the depth of the groove 11;
The width thereof is formed to be slightly smaller than the width of the groove 11.
材料供給孔５はシユー２の摺接面２１に突設さ
れた突条２２表面に反対側面から貫通する孔であ
る。シユー２の上部には気密型材料供給槽６が取
付けられており、材料供給孔５と連通せしめられ
ている。気密型材料供給槽６には真空ポンプＰの
吸引ダクト６１が連結されている。また材料供給
槽６内には粉粒状の金属原料７が収納されてい
る。 The material supply hole 5 is a hole that penetrates the surface of the protrusion 22 protruding from the sliding surface 21 of the shoe 2 from the opposite side. An airtight material supply tank 6 is attached to the upper part of the shoe 2 and is communicated with the material supply hole 5. A suction duct 61 of a vacuum pump P is connected to the airtight material supply tank 6. Further, a powdery metal raw material 7 is stored in the material supply tank 6 .
突条２２の回転方向上流端には補助アバツトメ
ント３が固定シユー２から溝１１内に突設されて
いる。補助アバツトメント３の回転方向上流端は
スクレーパ状に形成され、すなわち溝１１の断面
形状と同形状で、若干サイズは小さく補助アバツ
トメント３と溝１１内面間に若干の隙間が形成さ
れている。 An auxiliary abutment 3 is provided at the upstream end of the protrusion 22 in the rotational direction so as to protrude from the fixed shoe 2 into the groove 11. The upstream end of the auxiliary abutment 3 in the rotation direction is formed into a scraper shape, that is, it has the same cross-sectional shape as the groove 11, but is slightly smaller in size, and a slight gap is formed between the auxiliary abutment 3 and the inner surface of the groove 11.
突条２２の回転方向上流端にはアバツトメント
４が固定シユー２から溝１１内に突設されてい
る。アバツトメント４の断面形状は溝１１と同形
状でサイズは若干小さく、溝１１内面間に若干の
隙間が形成されている。アバツトメント４の回転
ホイール１の回転方向上流側は突条２２にはダイ
８１が埋め込まれダイ８１の中央から反対側面に
抜ける孔８が穿設されている。 At the upstream end of the protrusion 22 in the rotational direction, an abutment 4 is provided to protrude from the fixed shoe 2 into the groove 11. The cross-sectional shape of the abutment 4 is the same as that of the groove 11, but the size is slightly smaller, and a slight gap is formed between the inner surfaces of the groove 11. A die 81 is embedded in the protrusion 22 on the upstream side of the abutment 4 in the rotational direction of the rotary wheel 1, and a hole 8 is bored through the center of the die 81 to the opposite side.
以上のように回転ホイール１の溝１１と固定シ
ユー２から突設された突条２２、補助アバツトメ
ント３、アバツトメント４によつて押出し通路Ａ
が形成されている。 As described above, the groove 11 of the rotary wheel 1, the protrusion 22 protruding from the fixed shoe 2, the auxiliary abutment 3, and the abutment 4 are used to push out the passage A.
is formed.
固定シユー２の補助アバツトメント３よりも回
転方向上流には溝１１を蓋被する部材が連設され
ており、かつ溝１１側から反対側面に貫通する排
出孔９が貫通されている。 A member covering the groove 11 is connected to the fixed shoe 2 upstream of the auxiliary abutment 3 in the rotational direction, and a discharge hole 9 is penetrated from the groove 11 side to the opposite side.
以上のように構成された金属押出し成形装置に
よつて、この発明にかかる押出し方法を実施した
場合につき説明する。 A case will be described in which the extrusion method according to the present invention is carried out using the metal extrusion molding apparatus configured as described above.
回転ホイール１を回転して材料供給槽６内の粉
粒金属原料７を押出し通路Ａに供給してシユー２
の孔８から金属成形品１０を押出すと同時に真空
ポンプＰを作動して脱気を開始する。気密型材料
供給槽６は材料供給孔５及び押出し通路Ａに連通
しているため、供給槽６、供給孔５及び通路Ａ内
の空気が吸引ダクト６１から脱気される。 The rotary wheel 1 is rotated to supply the powder metal raw material 7 in the material supply tank 6 to the extrusion passage A, and the
At the same time as extruding the metal molded product 10 from the hole 8, the vacuum pump P is activated to start degassing. Since the airtight material supply tank 6 communicates with the material supply hole 5 and the extrusion passage A, the air in the supply tank 6, the supply hole 5, and the passage A is evacuated from the suction duct 61.
金属成形品１０の押出し成形とともに回転ホイ
ール１外周面１２及び溝１１内周面にバリ１０ａ
が形成される。すなわちアバツトメント４と溝１
１内周面間には若干の隙間が形成されているた
め、該隙間の幅t1の厚さのバリ１０ａが溝１１内
周面に付着する。 As the metal molded product 10 is extruded, burrs 10a are formed on the outer peripheral surface 12 of the rotating wheel 1 and the inner peripheral surface of the groove 11.
is formed. That is, abutment 4 and groove 1
Since a slight gap is formed between the inner circumferential surfaces of the grooves 11, a burr 10a having a thickness equal to the width t1 of the gap adheres to the inner circumferential surface of the groove 11.
このバリ１０ａのうち補助アバツトメント３に
よつて溝１１の内周面に付着したものの一部を削
除し、溝１１とシユー２とによつて形成された室
３ａ内に滞溜させる。すなわち補助アバツトメン
ト３と溝１１内周面間には、アバツトメント４と
溝１１内周面間の隙間の幅t1より小さい幅t2の隙
間が形成されているため、その差だけ補助アバツ
トメント３がバリ１０ａを切除する。切除された
バリ１０ａは補助アバツトメント３の回転方向上
流側の室３ａ内に滞溜され充満され、回転ホイー
ルから受ける押力によつて所定圧に達した時点で
排出孔９から溝１１外へ押出し排出される。 A part of the burr 10a attached to the inner peripheral surface of the groove 11 by the auxiliary abutment 3 is removed and accumulated in the chamber 3a formed by the groove 11 and the shoe 2. That is, a gap with a width t 2 smaller than the width t 1 of the gap between the abutment 4 and the inner circumferential surface of the groove 11 is formed between the auxiliary abutment 3 and the inner circumferential surface of the groove 11, so that the auxiliary abutment 3 is The burr 10a is removed. The removed burr 10a accumulates and fills the chamber 3a on the upstream side in the rotational direction of the auxiliary abutment 3, and is pushed out of the groove 11 from the discharge hole 9 when a predetermined pressure is reached by the pushing force received from the rotating wheel. be discharged.
この滞溜され、充満されたバリ１０ａによつて
補助アバツトメント３及び溝１１内周面間が密封
され又、アバツトメント４と溝１１内周面間の隙
間をバリ１０ａによつて封じ、押出し通路Ａを密
封する。 The accumulated and filled burr 10a seals the space between the auxiliary abutment 3 and the inner circumferential surface of the groove 11, and also seals the gap between the abutment 4 and the inner circumferential surface of the groove 11 by the burr 10a. to be sealed.
回転ホイール１外周面１２に付着したバリ１０
ａは存置しておき、このバリ１０ａによつて回転
ホイール１の外周面１２とシユー２の摺接面２１
間の間隙をなくし、押出し通路Ａ内へのここから
の空気の侵入を防止する。 Burr 10 attached to the outer peripheral surface 12 of the rotating wheel 1
a is left as is, and the sliding contact surface 21 of the outer peripheral surface 12 of the rotating wheel 1 and the shoe 2 is formed by this burr 10a.
This eliminates the gap between the extrusion passages A and prevents air from entering the extrusion passage A.
発明の効果
この発明は以上の如く、回転ホイールに付着し
たバリの一部を存置し、バリとシユーとを摺接せ
しめて回転ホイールとシユー間の隙間をなくし、
押出し通路を密封するため、押出し通路の密封を
完璧にすることが可能となり、押出し通路内の脱
気を完全に行え、更に押出時、回転ホイールの溝
が熱変形している場合でも押出し通路の回転方向
上流端の密封を確実に維持でき、脱気状態で良質
の金属成形品の成形が可能となる格別な効果を有
する。Effects of the Invention As described above, the present invention leaves a part of the burr attached to the rotating wheel and brings the burr into sliding contact with the shoe to eliminate the gap between the rotating wheel and the shoe.
Since the extrusion passage is sealed, it is possible to completely seal the extrusion passage, and the extrusion passage can be completely degassed. Furthermore, even if the groove of the rotating wheel is thermally deformed during extrusion, the extrusion passage can be completely sealed. It has the special effect of being able to reliably maintain the sealing of the upstream end in the rotational direction and making it possible to mold high-quality metal molded products in a deaerated state.
第１図はこの発明にかかる成形方法に使用する
装置の一実施例の縦断面図、第２図は回転ホイー
ルとシユーの斜視図、第３図は−線断面図、
第４図は−線断面図である。
Ａ……押出し通路、１……回転ホイール、２…
…固定シユー、３……補助アバツトメント、４…
…アバツトメント、５……材料供給孔、６……気
密型材料供給槽、７……金属原料、８……孔、排
出孔、１０……金属成形品、１０ａ……バリ、１
１……溝。
FIG. 1 is a longitudinal cross-sectional view of an embodiment of the apparatus used in the molding method according to the present invention, FIG. 2 is a perspective view of a rotating wheel and shoe, and FIG. 3 is a cross-sectional view taken along the - line.
FIG. 4 is a sectional view taken along the - line. A... Extrusion passage, 1... Rotating wheel, 2...
...Fixed shoe, 3...Auxiliary abutment, 4...
... Abutment, 5 ... Material supply hole, 6 ... Airtight material supply tank, 7 ... Metal raw material, 8 ... Hole, discharge hole, 10 ... Metal molded product, 10a ... Burr, 1
1...Groove.
Claims (1)
される材料の押出し通路に金属原料を供給しシユ
ーに形成した孔から押出して金属の成形を行う回
転ホイール式金属押出し成形方法において、 脱気した押出し通路の回転方向上流端に、固定
シユーより回転ホイールの溝内に補助アバツトメ
ントを突設すると共にこの補助アバツトメントよ
り回転方向上流側の溝をシユーで蓋被して滞溜室
を形成し、補助アバツトメントによつて回転ホイ
ールに付着したバリの一部を削り取りこのバリを
前記滞溜室に滞溜させてバリによつて押出し通路
の回転方向上流端の密封を行うことを特徴とする
回転ホイール式金属押出し成形方法。[Scope of Claims] 1. A rotating wheel metal extrusion molding method in which a metal raw material is supplied to a material extrusion path formed between a rotating wheel and a stationary shoe and extruded through holes formed in the shoe to form metal. At the upstream end in the rotational direction of the deaerated extrusion passage, an auxiliary abutment is provided protruding from the fixed shoe into the groove of the rotating wheel, and the groove on the upstream side in the rotational direction of the auxiliary abutment is covered with the shoe to form a retention chamber. A part of the burr attached to the rotating wheel is scraped off by an auxiliary abutment, the burr is accumulated in the retention chamber, and the upstream end of the extrusion passage in the rotational direction is sealed by the burr. Rotating wheel metal extrusion method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10838783A JPS5910413A (en) | 1983-06-16 | 1983-06-16 | Rotary wheel type metal extrusion molding process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10838783A JPS5910413A (en) | 1983-06-16 | 1983-06-16 | Rotary wheel type metal extrusion molding process |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57100382A Division JPS58218322A (en) | 1982-06-11 | 1982-06-11 | Rotating wheel metal extrusion equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5910413A JPS5910413A (en) | 1984-01-19 |
| JPH0225684B2 true JPH0225684B2 (en) | 1990-06-05 |
Family
ID=14483472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10838783A Granted JPS5910413A (en) | 1983-06-16 | 1983-06-16 | Rotary wheel type metal extrusion molding process |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5910413A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0656200A (en) * | 1992-07-31 | 1994-03-01 | Tominaga Oil Pump Mfg Co Ltd | Piping structure for oil feeding device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IN155321B (en) * | 1980-02-19 | 1985-01-19 | British Insulated Callenders | |
| JPS5940113Y2 (en) * | 1980-10-17 | 1984-11-12 | 三菱アルミニウム株式会社 | Metal extruder using long coil |
-
1983
- 1983-06-16 JP JP10838783A patent/JPS5910413A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5910413A (en) | 1984-01-19 |
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