JPS61270307A - High-frequency sintering device - Google Patents
High-frequency sintering deviceInfo
- Publication number
- JPS61270307A JPS61270307A JP11262385A JP11262385A JPS61270307A JP S61270307 A JPS61270307 A JP S61270307A JP 11262385 A JP11262385 A JP 11262385A JP 11262385 A JP11262385 A JP 11262385A JP S61270307 A JPS61270307 A JP S61270307A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- shaft
- induction coil
- coil
- rotating
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/34—Heating or cooling presses or parts thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、一般にホットプレス法と呼称されている加圧
焼結法の実施に使用される高周波焼結装置、即ち耐熱性
の型内に充填された原料を、前記型を中心とする円筒状
に配置した誘導コイルにより高周波誘導加熱しながら加
圧して焼結する高周波焼結装置にに関するものである。Detailed Description of the Invention (Field of Industrial Application) The present invention is directed to a high-frequency sintering device used for carrying out a pressure sintering method generally called a hot press method, that is, a heat-resistant mold. The present invention relates to a high-frequency sintering apparatus that pressurizes and sinters filled raw materials while subjecting them to high-frequency induction heating using an induction coil arranged in a cylindrical shape centered on the mold.
（従来の技術及びその問題点）
従来のこの種の高周波焼結装置は、焼結作用中に於ける
誘導コイルと型との相対位置関係が一定であったため、
型の形状によっては誘導加熱むらが生じる可能性があっ
た。換言すれば、誘導加熱むらが生じる恐れのあるよう
な形状の型を使用することが出来ないので、円柱状物等
の単純な形状の焼結体でなければ製造することが出来な
かったのである。(Prior art and its problems) In conventional high-frequency sintering equipment of this type, the relative positional relationship between the induction coil and the mold during the sintering action was constant;
Depending on the shape of the mold, uneven induction heating may occur. In other words, it was not possible to use a mold with a shape that would cause uneven induction heating, so it was only possible to manufacture sintered bodies with simple shapes such as cylinders. .
又、本発明者等は、誘導コイル内に対する型の出し入れ
を容易ならしめると共に装置の全高を低くするために、
誘導コイルの円周方向一部分で、前記型を横側方に取り
出すことを可能ならしめる周方向中を有する部分を、開
閉又は着脱可能に構成することを発明したが、この場合
、誘導コイルが複数のコイル単体から構成されるため、
一本のコイル素材を円筒コイル状に巻回した通常の誘導
コイルと比較して、型に対する誘導加熱むらが生じる恐
れがある。In addition, the present inventors made it easy to take the mold in and out of the induction coil, and to reduce the overall height of the device.
The invention has been invented in which a part of the induction coil in the circumferential direction, which has a circumferential center that allows the mold to be taken out laterally, is configured to be openable/closed or detachable. Since it is composed of a single coil,
Compared to a normal induction coil in which a single coil material is wound into a cylindrical coil shape, there is a risk of uneven induction heating of the mold.
（問題点を解決するための手段）
本発明は以上のような問題点を解決し得る高周波焼結装
置を提案するものであって、その特徴は、耐熱性の型内
に充填された原料を、前記型を中心とする円筒状に配置
した誘導コイルにより高周波誘導加熱しながら加圧して
焼結する高周波焼結装置に於いて、前記型を前記誘導コ
イルの中心軸線の周りに自転させる型回転駆動手段を設
けた点にある。(Means for Solving the Problems) The present invention proposes a high-frequency sintering device that can solve the above-mentioned problems. , in a high-frequency sintering device that performs pressure and sintering while performing high-frequency induction heating using an induction coil arranged in a cylindrical shape with the mold as the center, mold rotation in which the mold is rotated around the central axis of the induction coil; The point is that a driving means is provided.
（実施例）
以下に本発明実施例を添付の例示図に基づいて説明する
。(Example) Examples of the present invention will be described below based on the attached illustrative drawings.
第１図に於いて、１は回転受は軸であって、下フレーム
２にスラスト軸受３を介して垂直に支持され、前記下フ
レーム２に取り付けられているモーター４にチェン伝動
手段５を介して連動連結されている。６は回転押し軸で
あって、前記回転受は軸１と同心状態に於いて上フレー
ム７に回転及び昇降可能に支持され、前記上フレーム７
に支持されたシリンダーユニット８のピストンロッド８
ａにスラスト軸受９を介して相対回転自在に連結されて
いる。In FIG. 1, reference numeral 1 denotes a rotating shaft, which is vertically supported by a lower frame 2 via a thrust bearing 3, and connected to a motor 4 attached to the lower frame 2 via a chain transmission means 5. are linked together. Reference numeral 6 denotes a rotary push shaft, and the rotary receiver is rotatably and vertically supported by the upper frame 7 in a concentric state with the shaft 1.
Piston rod 8 of cylinder unit 8 supported by
a through a thrust bearing 9 so as to be relatively rotatable.
１０は黒鉛等から形成される型であって、下型１０ａ、
上型３ｂ、及び下型３ａに支持される外型１０ｅから構
成され、これら型１０ａ〜ＩＯＣによって形成される空
間に焼結原料１１が充填される。この型１０は、前記回
転受は軸１の上端に同心状に載置された廃盤１２上に中
間部材１３を介して同心状に支持され、上型１０ｂの上
端と前記回転押し軸６の下端部６ａとの間には中間部材
１４が介装されている。１５は型１０に同心状態に遊嵌
された筒体であって、前記廃盤１２上に支持され、この
筒体１５と型１０との間の空間に、型１０の酸化防止と
保温のために黒鉛粉体１６が充填されている。10 is a mold made of graphite or the like, which includes a lower mold 10a,
It is composed of an upper mold 3b and an outer mold 10e supported by a lower mold 3a, and the space formed by these molds 10a to IOC is filled with sintering raw material 11. In this mold 10, the rotary receiver is concentrically supported via an intermediate member 13 on a discarded product 12 placed concentrically on the upper end of the shaft 1, and the upper end of the upper mold 10b and the lower end of the rotary push shaft 6 An intermediate member 14 is interposed between the portion 6a and the portion 6a. Reference numeral 15 denotes a cylindrical body which is loosely fitted concentrically to the mold 10, and is supported on the scrapped product 12, and a space between the cylindrical body 15 and the mold 10 is filled with a material for preventing oxidation and keeping the mold 10 warm. Graphite powder 16 is filled.
１７は円筒状の誘導コイルであって、回転受は軸１及び
回転押し軸６と同心状態で且つ型１０を誘導加熱し得る
高さに於いて側枠１８に適当な支持手段を介して支持さ
れている。１９は先端に測温部を有する棒状の熱電対で
あって、前記回転受は軸１の下端から座！１２、中間部
材１３、及び下型１０ａの上端近傍まで中心位置に設け
られた挿入孔に一体に回転するように挿入固定され、測
温用電極にはスリップリング２０を介してリード線２１
が接続されている。Reference numeral 17 denotes a cylindrical induction coil, and the rotary receiver is supported by a side frame 18 via appropriate support means at a height that is concentric with the shaft 1 and the rotary push shaft 6 and at a height that allows the mold 10 to be heated by induction. has been done. Reference numeral 19 denotes a rod-shaped thermocouple having a temperature measuring section at its tip, and the rotary receiver is connected to the seat from the lower end of the shaft 1. 12, the intermediate member 13 and the lower die 10a are inserted and fixed into insertion holes provided at the center near the upper end thereof so as to rotate together, and a lead wire 21 is connected to the temperature measuring electrode via a slip ring 20.
is connected.
上記のように構成された焼結装置に於いて、誘導コイル
１７の両端子に高周波電圧を印加することにより型１０
が高周波誘導加熱され、内部の焼結原料１１が所定温度
に加熱される。かかる状態でシリンダーユニット８を作
動させ、回転押し軸６及び中間部材１４を介して上型Ｉ
Ｑｂを下型１０ａに対して押し下げ、両型１０ａ、？Ｏ
ｂ間の焼結原料１１を圧縮することにより、当該焼結原
料１１が焼結される。In the sintering apparatus configured as described above, the mold 10 is heated by applying a high frequency voltage to both terminals of the induction coil 17.
is subjected to high-frequency induction heating, and the sintering raw material 11 inside is heated to a predetermined temperature. In this state, the cylinder unit 8 is operated, and the upper mold I is moved through the rotary push shaft 6 and the intermediate member 14.
Push Qb down against the lower mold 10a, and press both molds 10a, ? O
By compressing the sintering raw material 11 between b, the sintering raw material 11 is sintered.
この焼結工程に於いて、モーター４を稼動させ、チェン
伝動手段５を介して回転受は軸１を自転させることによ
り、型１０及び回転押し軸６が一体に自転することにな
る。この型１０の自転により、誘導コイル１７による誘
導加熱むらを無くし、型１０の温度分布を均一ならしめ
ることが出来る。In this sintering process, the motor 4 is operated and the rotary receiver rotates the shaft 1 via the chain transmission means 5, so that the mold 10 and the rotary push shaft 6 rotate together. This rotation of the mold 10 can eliminate uneven induction heating caused by the induction coil 17 and make the temperature distribution of the mold 10 uniform.
第２図は回転受は軸１と回転押し軸６の両方を強制回転
させるようにした実施例を示している。FIG. 2 shows an embodiment in which the rotary receiver forcibly rotates both the shaft 1 and the rotary push shaft 6.
即ち、上下のフレーム２，７に垂直に支持させた回転伝
動軸２２を設け、モーター４とこの回転伝動軸２２とを
チェン伝動手段２３により連動連結させると共に、回転
受は軸１及び回転押し軸６が同一方向に同一速度で連動
回転するように、これら両軸１，６を夫々チェン伝動手
段２４．２５を介して前記回転伝動軸２２に連動連結さ
せている。尚、回転押し軸６はシリンダーユニット８に
より昇降せしめられるので、チェン伝動手段２５の回転
押し軸６側の歯輪２５ａは、上フレーム７に回転のみ可
能に支持せしめると共に、回転押し軸６に設けたスプラ
イン軸部６ｂにスプライン嵌合させている。That is, a rotary transmission shaft 22 supported vertically on the upper and lower frames 2 and 7 is provided, and the motor 4 and this rotary transmission shaft 22 are interlocked and connected by a chain transmission means 23, and the rotary receiver is connected to the shaft 1 and the rotary push shaft. Both shafts 1 and 6 are interlocked and connected to the rotary transmission shaft 22 via chain transmission means 24 and 25, respectively, so that the shafts 1 and 6 rotate in the same direction and at the same speed. Incidentally, since the rotary push shaft 6 is raised and lowered by the cylinder unit 8, the tooth ring 25a on the rotary push shaft 6 side of the chain transmission means 25 is supported by the upper frame 7 so that it can only rotate, and is also provided on the rotary push shaft 6. The spline shaft portion 6b is spline-fitted to the spline shaft portion 6b.
尚、第１図の実施例では、回転受は軸１により型１０を
自転させている状況に於いても、当該型１０の温度測定
を熱電対１９により自動的且つ遠隔的に行うことが出来
るが、第２図に示すように型１０の外型１０ｃ内に先端
を挿入した測温管２６を利用して、光温度計により型１
０の温度測定を行うときは、型１０を停止させている状
態に於いて測温作業を行えば良い。In the embodiment shown in FIG. 1, even when the rotary receiver is rotating the mold 10 on its own axis using the shaft 1, the temperature of the mold 10 can be automatically and remotely measured using the thermocouple 19. However, as shown in FIG.
When measuring the temperature of 0, it is sufficient to carry out the temperature measuring operation while the mold 10 is stopped.
第３図は、第２図に示した実施例に於ける回転受は軸１
と回転押し軸６との位置を上下逆にした実施例を示して
いる。従ってこの実施例では、シリンダーユニット８は
下フレーム２の下側に配ＩＥされ、型１０を出し入れ作
業高さに位置させるために下フレーム２を支持する支持
台２７内の空間を前記シリンダーユニット８の配置に利
用することが出来るので、装置全体の高さを低くするこ
とが出来る。FIG. 3 shows that the rotary bearing in the embodiment shown in FIG.
An embodiment is shown in which the positions of the rotary push shaft 6 and the rotary push shaft 6 are upside down. Therefore, in this embodiment, the cylinder unit 8 is arranged under the lower frame 2, and in order to position the mold 10 at the working height for loading and unloading, the cylinder unit 8 The height of the entire device can be reduced.
第４図乃至第６図は前記誘導コイル１７の具体構造の一
例を示し、当該誘導コイル１７は、円周方向に於いて２
分割された２つのコイル単体２８．２９から構成されて
いる。各コイル単体２８゜２９は、銅バイブ３０を円柱
面にそって矩形渦巻形に巻回すると共に、内外両端部を
一側方に延出させて夫々に吸排水管接続用ニップル３１
ａ、３１ｂと通電用端子板３２ａ、３２ｂを取り付けて
成るものである。そして両コイル単体２８．２９の外端
側端子板３２ａどうし、及び内端側端子板３２ｂどうし
を夫々導電線３３ａ、３３ｂにより接続している。4 to 6 show an example of the specific structure of the induction coil 17, and the induction coil 17 has two parts in the circumferential direction.
It is composed of two separate coils 28 and 29. Each of the individual coils 28 and 29 has a copper vibrator 30 wound in a rectangular spiral shape along a cylindrical surface, and has both inner and outer ends extending to one side, and each has a nipple 31 for connecting the suction and drainage pipes.
a, 31b and current-carrying terminal plates 32a, 32b are attached. The outer terminal plates 32a and the inner terminal plates 32b of both coil units 28 and 29 are connected by conductive wires 33a and 33b, respectively.
第４図乃至第６図に示すように両コイル単体２８．２９
が互いに対向して一つの円筒状誘導コイル１７を形成し
ている状態では、両コイル単体２８．２９の外端側端子
板３２ａと内端側端子板３２ｂとの間に高周波電圧を印
加することにより、両コイル単体２８．２９の中心部２
８ａ、２９ａを一方から他方に貫通する磁力線が発生す
る。従ってこの磁力線は、誘導コイル１７の中心位置に
セットされた前記型１０を略直径方向に貫通し、当該型
１０を誘導加熱することが出来る。又、一方のコイル単
体２８は固定し、他方のコイル単体２９を誘導コイル１
７の中心線と平行な支軸３４の周りで開閉可能に構成す
れば、この可動コイル単体２９を第７図及び第８図に示
すように開動させることにより、誘導コイル１７の中心
位置にセットされていた型１０を筒体１５等と共に横側
方に取り出すことが出来る。As shown in Figures 4 to 6, both coils alone 28.29
When the two coils face each other to form one cylindrical induction coil 17, a high frequency voltage is applied between the outer end terminal plate 32a and the inner end terminal plate 32b of both single coils 28 and 29. Accordingly, the center part 2 of both coils 28 and 29
Lines of magnetic force are generated that pass through 8a and 29a from one side to the other. Therefore, these lines of magnetic force penetrate the mold 10 set at the center of the induction coil 17 in a substantially diametrical direction, and can heat the mold 10 by induction. Also, one coil 28 is fixed, and the other coil 29 is connected to the induction coil 1.
If configured to be openable and closable around a support shaft 34 parallel to the center line of the induction coil 17, the movable coil 29 can be opened and moved as shown in FIGS. 7 and 8 to set it at the center position of the induction coil 17. The mold 10 that has been placed can be taken out laterally together with the cylindrical body 15 and the like.
このような分割形の特殊誘導コイル１７を使用するとき
は、型１０等に対する誘導加熱が均一に行われない恐れ
があるが、前記のように型１０を強制的に自転させるこ
とにより、この型１０の温度分布を均一化させることが
出来る。When using such a split-type special induction coil 17, there is a risk that the induction heating of the mold 10 etc. will not be performed uniformly, but by forcibly rotating the mold 10 as described above, this mold 10 temperature distributions can be made uniform.
尚、本発明の焼結装置は、内部を真空状態にし得る真空
炉や内部を不活性ガス雰囲気とし得る炉を併用する焼結
装置としても実施することが出来る。又、誘導コイルの
中心軸線が水平となる横型焼結装置としても実施可能で
ある。The sintering apparatus of the present invention can also be implemented as a sintering apparatus that uses a vacuum furnace that can create a vacuum inside or a furnace that can create an inert gas atmosphere inside. Further, it is also possible to implement the present invention as a horizontal sintering apparatus in which the center axis of the induction coil is horizontal.
（発明の作用及び効果）
以上のように本発明の高周波焼結装置によれば、誘導コ
イルにより高周波誘導加熱される型を型回転駆動手段（
第１図の実施例では、回転受は軸１、モーター４、及び
チェン伝動手段５から構成している）により前記誘導コ
イルの中心軸線の周りに自転させることによって、仮に
型の形状が誘導加熱むらの生じるような特殊な形状であ
っても型の温度分布を均一化し得る。従って、特殊な形
状の型を必要とするような焼結体を製造する場合でも、
常に良質の焼結体を得ることが出来る。(Operations and Effects of the Invention) As described above, according to the high-frequency sintering apparatus of the present invention, the mold rotation drive means (
In the embodiment shown in FIG. 1, the rotary receiver is composed of a shaft 1, a motor 4, and a chain transmission means 5). Even if the mold has a special shape that causes unevenness, the temperature distribution of the mold can be made uniform. Therefore, even when manufacturing a sintered body that requires a mold with a special shape,
Good quality sintered bodies can always be obtained.
特に本発明は、第４図乃至第８図に於いて説明したよう
な分割形の特殊な誘導コイルを使用する場合、即ち誘導
加熱むらの生じる可能性が大きい誘導コイルを併用する
場合に有効なものである。In particular, the present invention is effective when using a special split-type induction coil as explained in FIGS. It is something.
第１図は第一実施例の一部縦断正面図、第２図は第二実
施例の一部縦断正面図、第３図は第三実施例一部縦断正
面図、第４図は誘導コイルの具体構造を示す平面図、第
５図は同要部の側面図、第６図は同正面図、第７図は誘
導コイル一部分を開動させた状態の平面図、第８図は同
正面図である１・・・回転受は軸、４・・・モーター、
５，２３〜２５・・・チェン伝動手段、６・・・回転押
し軸、８・・・シリンダーユニット、１０・・・型、１
０ａ・・・下型、１０ｂ・・・上型、１０ｃ・・・外型
、１１・・・焼結原料、１３．１４・・・中間部材、１
５・・・筒体、１６・・・黒鉛粉体、１７・・・誘導コ
イル、１９・・・熱電対、２２・・・回転伝動軸、２８
．２９・・・コイル単体、３０・・・銅パイプ、３１ａ
、３１ｂ・・・吸排水管接続用ニップル、３２ａ、３２
ｂ・・・通電用端子板。
特許出願人 大阪冨士工業株式会社
第４図
第５図 第６図Fig. 1 is a partially longitudinal front view of the first embodiment, Fig. 2 is a partially longitudinal front view of the second embodiment, Fig. 3 is a partially longitudinal front view of the third embodiment, and Fig. 4 is an induction coil. Fig. 5 is a side view of the main parts, Fig. 6 is a front view of the same, Fig. 7 is a plan view of the induction coil partially opened, and Fig. 8 is a front view of the same. 1... Rotating bearing is shaft, 4... Motor,
5, 23-25... Chain transmission means, 6... Rotating push shaft, 8... Cylinder unit, 10... Model, 1
0a...lower mold, 10b...upper mold, 10c...outer mold, 11...sintering raw material, 13.14...intermediate member, 1
5... Cylindrical body, 16... Graphite powder, 17... Induction coil, 19... Thermocouple, 22... Rotation transmission shaft, 28
．． 29... Single coil, 30... Copper pipe, 31a
, 31b... Nipple for connecting suction and drainage pipes, 32a, 32
b... Terminal board for energizing. Patent applicant: Osaka Fuji Kogyo Co., Ltd. Figure 4 Figure 5 Figure 6
Claims (1)
円筒状に配置した誘導コイルにより高周波誘導加熱しな
がら加圧して焼結する高周波焼結装置に於いて、前記型
を前記誘導コイルの中心軸線の周りに自転させる型回転
駆動手段を設けて成る高周波焼結装置。In a high-frequency sintering device, a raw material filled in a heat-resistant mold is pressurized and sintered while being subjected to high-frequency induction heating using an induction coil arranged in a cylindrical shape centered on the mold. A high-frequency sintering device that is equipped with a mold rotation drive means that rotates the coil around its central axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11262385A JPS61270307A (en) | 1985-05-24 | 1985-05-24 | High-frequency sintering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11262385A JPS61270307A (en) | 1985-05-24 | 1985-05-24 | High-frequency sintering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61270307A true JPS61270307A (en) | 1986-11-29 |
Family
ID=14591364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11262385A Pending JPS61270307A (en) | 1985-05-24 | 1985-05-24 | High-frequency sintering device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61270307A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01174894A (en) * | 1987-12-28 | 1989-07-11 | Ishikawajima Harima Heavy Ind Co Ltd | Hot press device |
| JPH02285003A (en) * | 1989-04-27 | 1990-11-22 | Munekata Kk | Method for molding metal powder |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5947303A (en) * | 1982-09-08 | 1984-03-17 | Sumitomo Electric Ind Ltd | Sintering furnace |
-
1985
- 1985-05-24 JP JP11262385A patent/JPS61270307A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5947303A (en) * | 1982-09-08 | 1984-03-17 | Sumitomo Electric Ind Ltd | Sintering furnace |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01174894A (en) * | 1987-12-28 | 1989-07-11 | Ishikawajima Harima Heavy Ind Co Ltd | Hot press device |
| JPH02285003A (en) * | 1989-04-27 | 1990-11-22 | Munekata Kk | Method for molding metal powder |
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