JPH073325A - Device for heating base stock for forming - Google Patents
Device for heating base stock for formingInfo
- Publication number
- JPH073325A JPH073325A JP5144921A JP14492193A JPH073325A JP H073325 A JPH073325 A JP H073325A JP 5144921 A JP5144921 A JP 5144921A JP 14492193 A JP14492193 A JP 14492193A JP H073325 A JPH073325 A JP H073325A
- Authority
- JP
- Japan
- Prior art keywords
- rod
- coil
- shaped material
- pitch
- diameter portion
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Heat Treatment Of Articles (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、例えば熱間鍛造成形さ
れる素材を、成形前に所定の温度に高周波加熱するため
の成形用素材の加熱装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for heating a molding material for heating a material to be hot forged by high frequency to a predetermined temperature before molding.
【０００２】[0002]
【従来の技術】所定温度、例えば、約１０００℃に加熱
された素材を成形型内に投入し、この素材を加圧するこ
とによって所定の形状の成形品を得る熱間鍛造方法が広
く採用されている。2. Description of the Related Art A hot forging method is widely adopted in which a material heated to a predetermined temperature, for example, about 1000.degree. C. is put into a molding die and the material is pressed to obtain a molded article having a predetermined shape. There is.
【０００３】ところで、この種の熱間鍛造方法で成形さ
れる素材には、種々の形状のものがあり、例えばコネク
ティング・ロッド（以下、コンロッドという）のように
軸方向に沿って異なる外径を有する棒状素材を使用する
場合が多い。その際、成形に先立って前記棒状素材全体
を均一に加熱しておく必要があり、このため、軸方向に
沿って異径形状の素材の外周に対して略一定距離になる
ように巻回径を変化させて高周波コイルを配置した加熱
装置が提案されている（特開平４−２３２２１０号公報
参照）。By the way, there are various shapes of materials formed by this kind of hot forging method, and for example, connecting rods (hereinafter referred to as connecting rods) have different outer diameters along the axial direction. In many cases, the rod-shaped material that they have is used. At that time, it is necessary to uniformly heat the entire rod-shaped material prior to forming.Therefore, the winding diameter is set to be a substantially constant distance from the outer circumference of the different-diameter material along the axial direction. There is proposed a heating device in which a high frequency coil is arranged by changing the temperature (see Japanese Patent Application Laid-Open No. 4-232210).
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記の
従来技術では、高周波コイルが、所望の素材の外径形状
に対応して軸方向に異径形状に構成されている。このた
め、素材の変更に対応して該素材の径が変化すると、高
周波コイルと素材の外周との距離が異なってしまい、前
記素材全体を均一に加熱することができない。これによ
って、種々の径の異なる素材に対応することが困難とな
るという問題が指摘されている。However, in the above-mentioned prior art, the high frequency coil is formed in a different diameter shape in the axial direction corresponding to the outer diameter shape of the desired material. Therefore, if the diameter of the material changes in response to a change in the material, the distance between the high frequency coil and the outer circumference of the material changes, and the entire material cannot be heated uniformly. It has been pointed out that this makes it difficult to deal with various materials having different diameters.
【０００５】本発明は、この種の問題を解決するための
ものであり、種々の径の異なる棒状素材を全体として均
一に加熱することができるとともに、簡単な構成で汎用
性に優れる成形用素材の加熱装置を提供することを目的
とする。The present invention is intended to solve this kind of problem, and is capable of uniformly heating various rod-shaped raw materials having different diameters as a whole, and having a simple construction and excellent versatility. An object of the present invention is to provide a heating device.
【０００６】[0006]
【課題を解決するための手段】前記の目的を達成するた
めに、本発明は、軸方向に沿って異なる外径を有する棒
状素材を、成形に先立って所定の温度に加熱するための
加熱装置であって、前記棒状素材を前記軸方向に間歇送
りする移送手段と、前記棒状素材の外周を周回して該棒
状素材の搬送路に配設される高周波コイルと、を備える
とともに、前記高周波コイルは、前記棒状素材の停止位
置にあって該棒状素材の小径部に対応して設けられかつ
所定の第１コイルピッチに設定された第１コイル部位
と、前記棒状素材の停止位置にあって該棒状素材の大径
部に対応して設けられかつ前記第１コイルピッチより大
きく離間する第２コイルピッチに設定された第２コイル
部位と、を備えることを特徴とする。In order to achieve the above object, the present invention provides a heating device for heating a rod-shaped material having different outer diameters along the axial direction to a predetermined temperature prior to forming. A high-frequency coil, comprising: a transfer unit that intermittently feeds the rod-shaped material in the axial direction; and a high-frequency coil that circulates around the outer periphery of the rod-shaped material and is arranged in a conveyance path of the rod-shaped material. A first coil portion provided at a stop position of the rod-shaped material corresponding to a small diameter portion of the rod-shaped material and set to a predetermined first coil pitch; and a stop position of the rod-shaped material A second coil portion provided corresponding to the large diameter portion of the rod-shaped material and having a second coil pitch spaced apart from the first coil pitch by a larger distance.
【０００７】また、前記高周波コイルが、前記第１およ
び第２コイル部位と一体的にかつ前記棒状素材の移送方
向下流側に設けられ該棒状素材全体を保熱するための第
３コイル部位を備えることが好ましい。Further, the high-frequency coil has a third coil portion which is provided integrally with the first and second coil portions and on the downstream side in the transfer direction of the rod-shaped material for keeping the heat of the entire rod-shaped material. It is preferable.
【０００８】[0008]
【作用】上記の本発明に係る成形用素材の加熱装置で
は、搬送路上を間歇的に送られる棒状素材は、その停止
位置で高周波コイルの第１コイル部位により小径部が誘
導加熱される一方、第２コイル部位により大径部が誘導
加熱される。ここで、第１コイル部位の第１コイルピッ
チが密であり、第２コイル部位の第２コイルピッチが粗
であるため、小径部および大径部に対してそれぞれ適正
な電力を供給することができる。従って、軸方向に沿っ
て異なる外径を有する棒状素材を全体として均一に加熱
することができるとともに、第１および／または第２コ
イルピッチを変更するだけで径の異なる種々の棒状素材
の加熱にも容易に対応することが可能になる。In the heating apparatus for molding material according to the present invention described above, the rod-shaped material that is intermittently fed on the conveying path has its small diameter portion induction-heated by the first coil portion of the high-frequency coil at its stop position. The large diameter portion is induction-heated by the second coil portion. Here, since the first coil pitch of the first coil portion is dense and the second coil pitch of the second coil portion is coarse, it is possible to supply appropriate electric power to the small diameter portion and the large diameter portion, respectively. it can. Therefore, a rod-shaped material having different outer diameters along the axial direction can be uniformly heated as a whole, and various rod-shaped materials having different diameters can be heated only by changing the first and / or the second coil pitch. It becomes possible to cope easily.
【０００９】また、第１および第２コイル部位を通過し
た棒状素材が、第３コイル部位に対応して配置されるこ
とにより、この棒状素材全体が所定の温度に均一な状態
で保温される。Further, since the rod-shaped material that has passed through the first and second coil portions is arranged corresponding to the third coil portion, the entire rod-shaped material is kept warm at a predetermined temperature in a uniform state.
【００１０】[0010]
【実施例】本発明に係る成形用素材の加熱装置について
実施例を挙げ、添付の図面を参照して以下に説明する。EXAMPLES Examples of the heating apparatus for the molding material according to the present invention will be described below with reference to the accompanying drawings.
【００１１】図３において、参照符号１０は、成形に先
立って本実施例に係る加熱装置２０により所定の温度に
加熱されるコンロッド形成用棒状素材を示す。この棒状
素材１０は、両端にそれぞれ異なる外径を有しかつ異な
る長さを有する第１大径部１２および第２大径部１４を
備えるとともに、この第１および第２大径部１２、１４
からテーパ部を介して小径部１６が一体的に設けられて
いる。In FIG. 3, reference numeral 10 indicates a rod-shaped raw material for forming a connecting rod, which is heated to a predetermined temperature by the heating device 20 according to this embodiment prior to forming. The rod-shaped material 10 includes a first large-diameter portion 12 and a second large-diameter portion 14 having different outer diameters and different lengths at both ends, and the first and second large-diameter portions 12 and 14 are provided.
The small-diameter portion 16 is integrally provided via the tapered portion.
【００１２】図１および図２に示すように、加熱装置２
０は、棒状素材１０（１０ａ乃至１０ｃを含む、以下、
同様）を軸方向（矢印Ａ方向）に間歇送り、所謂、タク
ト送りする移送手段２２と、この棒状素材１０の外周を
周回して該棒状素材１０の搬送路Ｈに配設される高周波
コイル２４とを備える。As shown in FIGS. 1 and 2, the heating device 2
0 is a rod-shaped material 10 (including 10a to 10c, hereinafter,
The same) is intermittently sent in the axial direction (direction of arrow A), so-called tact feed, and a high-frequency coil 24 arranged around the outer circumference of the rod-shaped material 10 and arranged in the conveying path H of the rod-shaped material 10. With.
【００１３】高周波コイル２４は、その両端が端子板２
６を介して高周波電源２８に接続されるとともに、冷却
水用配管３０ａ、３０ｂを介してその内部に冷却水が循
環される（図１参照）。Both ends of the high-frequency coil 24 are terminal plates 2
The cooling water is connected to the high frequency power supply 28 via 6 and the cooling water is circulated therein via the cooling water pipes 30a and 30b (see FIG. 1).
【００１４】この高周波コイル２４は、棒状素材１０の
停止位置にあって該棒状素材１０の小径部１６に対応し
て設けられかつ所定の第１コイルピッチＰ１に設定され
た幅狭な第１コイル部位３２と、前記棒状素材１０の停
止位置にあって該棒状素材１０の第１および第２大径部
１２、１４に対応して設けられかつ前記第１コイルピッ
チＰ１より大きく離間する第２コイルピッチＰ２に設定
された幅広な第２コイル部位３４とを備える。高周波コ
イル２４は、さらに第１および第２コイル部位３２、３
４と一体的にかつ棒状素材１０の移送方向（矢印Ａ方
向）下流側に設けられこの棒状素材１０全体を保熱する
ための幅広な第３コイル部位３６を備える。この第３コ
イル部位３６は、棒状素材１０の軸方向の長さより長尺
に構成されており、所定の第３コイルピッチＰ３に設定
されている。The high frequency coil 24 is a narrow first coil provided at the stop position of the rod-shaped material 10 so as to correspond to the small diameter portion 16 of the rod-shaped material 10 and set to a predetermined first coil pitch P1. The part 32 and a second coil which is provided at a stop position of the rod-shaped material 10 in correspondence with the first and second large diameter portions 12 and 14 of the rod-shaped material 10 and which is separated from the first coil pitch P1 by a large distance. And a wide second coil portion 34 set to the pitch P2. The high frequency coil 24 further includes first and second coil portions 32, 3
4, and a wide third coil portion 36 for keeping heat of the entire rod-shaped material 10 is provided on the downstream side in the transfer direction (arrow A direction) of the rod-shaped material 10. The third coil portion 36 is longer than the axial length of the rod-shaped material 10 and is set to a predetermined third coil pitch P3.
【００１５】移送手段２２は、高周波コイル２４の内側
に配設されるセラミックス製筒体３８を備え、この筒体
３８内に形成される搬送路Ｈに複数の棒状素材１０がそ
れぞれの端部を当接させて配置される。筒体３８内に
は、矢印Ａ方向最上流に配置されている棒状素材１０ａ
の端部に係合するプッシャ４０が設けられ、このプッシ
ャ４０は、図示しないアクチュエータを介して複数の棒
状素材１０ａを矢印Ａ方向に間歇送りするように構成さ
れる。筒体３８の矢印Ａ方向下流側端部には、傾斜する
シュート部材４２が設けられ、このシュート部材４２に
より搬送される棒状素材１０は、図示しない熱間鍛造用
成形型内に投入される。The transfer means 22 is provided with a ceramic cylindrical body 38 arranged inside the high frequency coil 24, and a plurality of rod-shaped materials 10 have their respective end portions in a conveying path H formed in the cylindrical body 38. They are placed in contact with each other. In the cylindrical body 38, the rod-shaped material 10a arranged in the uppermost stream in the direction of arrow A
A pusher 40 that engages with the end of the rod is provided, and the pusher 40 is configured to intermittently feed a plurality of rod-shaped materials 10a in the direction of arrow A via an actuator (not shown). An inclined chute member 42 is provided at the downstream end of the cylindrical body 38 in the direction of arrow A, and the rod-shaped material 10 conveyed by this chute member 42 is put into a hot forging die (not shown).
【００１６】次に、このように構成される加熱装置２０
の動作について説明する。Next, the heating device 20 constructed as described above.
The operation of will be described.
【００１７】まず、図１に示すように、筒体３８内に
は、複数の棒状素材１０ａ乃至１０ｃが互いの端部同士
を当接させた状態で配設されており、高周波電源２８が
駆動されて高周波コイル２４に高周波電流が流れる。こ
のため、筒体３８を介して高周波コイル２４内に配置さ
れている棒状素材１０ａ乃至１０ｃは、高周波電流によ
り誘導加熱される。First, as shown in FIG. 1, a plurality of rod-shaped materials 10a to 10c are arranged in a cylindrical body 38 with their ends abutting each other, and a high frequency power source 28 is driven. As a result, a high frequency current flows through the high frequency coil 24. Therefore, the rod-shaped materials 10a to 10c arranged in the high-frequency coil 24 via the tubular body 38 are induction-heated by the high-frequency current.
【００１８】この場合、棒状素材１０ａでは、その小径
部１６が第１コイル部位３２に対応して配置されるとと
もに、その第１大径部１２が第２コイル部位３４に対応
して配置されている。ここで、第１コイル部位３２は、
比較的小さな第１コイルピッチＰ１に設定された幅狭な
部分であり、一方、第２コイル部位３４は、前記第１コ
イルピッチＰ１より大きく離間する第２コイルピッチＰ
２に設定された幅広な部分である。従って、それぞれ直
径の異なる小径部１６と第１大径部１２とに、それぞれ
所望の電力を供給することができ、この小径部１６と第
１大径部１２とを略均一に加熱することが可能になる。In this case, in the rod-shaped material 10a, the small diameter portion 16 is arranged corresponding to the first coil portion 32, and the first large diameter portion 12 is arranged corresponding to the second coil portion 34. There is. Here, the first coil portion 32 is
The second coil portion 34 is a narrow portion set to a relatively small first coil pitch P1, while the second coil portion 34 is separated from the first coil pitch P1 by a second coil pitch P1.
It is a wide part set to 2. Therefore, desired power can be supplied to the small diameter portion 16 and the first large diameter portion 12 having different diameters, and the small diameter portion 16 and the first large diameter portion 12 can be heated substantially uniformly. It will be possible.
【００１９】次いで、移送手段２２を構成するプッシャ
４０が進出し、棒状素材１０ａが棒状素材１０ｂの位置
に、この棒状素材１０ｂが棒状素材１０ｃの位置に、さ
らにこの棒状素材１０ｃがシュート部材４２を介して払
い出されて図示しない成形型内に投入される。棒状素材
１０ｂの位置に至った棒状素材１０ａは、その第２大径
部１４を第２コイル部位３４に対応して位置決めされ
る。このため、第２大径部１４は、上記第１大径部１２
と同様に所望の加熱状態が得られることになる。Next, the pusher 40 constituting the transfer means 22 advances, the rod-shaped material 10a is in the position of the rod-shaped material 10b, this rod-shaped material 10b is in the position of the rod-shaped material 10c, and further this rod-shaped material 10c is the chute member 42. It is dispensed through and put into a molding die (not shown). The rod-shaped material 10a that has reached the position of the rod-shaped material 10b is positioned such that the second large diameter portion 14 thereof corresponds to the second coil portion 34. Therefore, the second large-diameter portion 14 has the first large-diameter portion 12 described above.
A desired heating state can be obtained in the same manner as in.
【００２０】さらに、移送手段２２の作用下に棒状素材
１０ａが棒状素材１０ｃの位置に至ると、第３コイル部
位３６を介して前記棒状素材１０ａの全長にわたって保
温状態が維持される。これにより、棒状素材１０ａは、
全体にわたって均一な温度に加熱保持された状態で、シ
ュート部材４２から図示しない成形型内に搬送される。Further, when the rod-shaped material 10a reaches the position of the rod-shaped material 10c under the action of the transfer means 22, the heat retaining state is maintained over the entire length of the rod-shaped material 10a via the third coil portion 36. As a result, the rod-shaped material 10a is
The whole is heated and maintained at a uniform temperature, and is conveyed from the chute member 42 into a molding die (not shown).
【００２１】このように、本実施例では、高周波コイル
２４のピッチが密な第１コイルピッチＰ１に設定された
第１コイル部位３２で棒状素材１０の小径部１６を加熱
する一方、ピッチが粗な第２コイルピッチＰ２に設定さ
れた第２コイル部位３４で前記棒状素材１０の第１およ
び第２大径部１２、１４を加熱する。このため、棒状素
材１０の直径の異なる部分に対応して磁束密度が変化さ
れ、該直径の異なる部分、すなわち小径部１６と第１お
よび第２大径部１２、１４とを均一な温度に加熱するこ
とができるという効果が得られる。しかも、第１および
第２コイル部位３２、３４に連なって設けられる第３コ
イル部位３６により棒状素材１０全体が保温されるた
め、この棒状素材１０を全体的に均一の温度に調整する
ことが可能になる。As described above, in this embodiment, the small diameter portion 16 of the rod-shaped material 10 is heated by the first coil portion 32 in which the pitch of the high frequency coil 24 is set to the dense first coil pitch P1, while the pitch is coarse. The first and second large diameter portions 12 and 14 of the rod-shaped material 10 are heated by the second coil portion 34 set to the second coil pitch P2. Therefore, the magnetic flux density is changed corresponding to the different diameter portions of the rod-shaped material 10, and the different diameter portions, that is, the small diameter portion 16 and the first and second large diameter portions 12 and 14 are heated to a uniform temperature. The effect of being able to do is obtained. Moreover, since the entire rod-shaped material 10 is kept warm by the third coil portion 36 provided in series with the first and second coil portions 32 and 34, it is possible to adjust the temperature of the rod-shaped material 10 to a uniform temperature as a whole. become.
【００２２】なお、図４には、加熱装置２０で棒状素材
１０を加熱する実験を行った際の棒状素材１０の各部分
の温度分布が示されている。これにより、異径状部材で
ある棒状素材１０の各部分が略同一の温度に高精度に加
熱されていることが了解される。FIG. 4 shows the temperature distribution of each part of the rod-shaped material 10 when an experiment for heating the rod-shaped material 10 with the heating device 20 is performed. From this, it is understood that the respective parts of the rod-shaped material 10 which are different-diameter members are heated to substantially the same temperature with high accuracy.
【００２３】さらにまた、本実施例では、棒状素材１０
とは形状の異なる種々の棒状素材が使用される際、高周
波コイル２４の第１コイルピッチＰ１および／または第
２コイルピッチＰ２を変更するだけでよい。このため、
種々の異径状部材である棒状素材１０等を全体的に均一
に加熱することができ、簡単な構成で汎用性に優れると
いう利点がある。Furthermore, in this embodiment, the rod-shaped material 10 is used.
When various rod-shaped materials having different shapes from are used, it is only necessary to change the first coil pitch P1 and / or the second coil pitch P2 of the high frequency coil 24. For this reason,
There is an advantage that various materials having different diameters, such as the rod-shaped material 10 can be uniformly heated as a whole, and the versatility is excellent with a simple configuration.
【００２４】[0024]
【発明の効果】本発明に係る成形用素材の加熱装置によ
れば、以下の効果が得られる。The heating device for a molding material according to the present invention has the following effects.
【００２５】搬送路上を間歇的に送られる棒状素材は、
その停止位置で高周波コイルの第１コイル部位により小
径部が誘導加熱される一方、第２コイル部位により大径
部が誘導加熱される。ここで、第１コイル部位の第１コ
イルピッチが密であり、第２コイル部位の第２コイルピ
ッチが粗であるため、小径部および大径部に対してそれ
ぞれ適正な電力を供給することができる。従って、簡単
な構成で軸方向に沿って異なる外径を有する棒状素材を
全体として均一に加熱することができるとともに、第１
および／または第２コイルピッチを変更するだけで径の
異なる種々の棒状素材の加熱にも容易に対応することが
可能になる。The rod-shaped material that is intermittently sent on the transport path is
At the stop position, the small-diameter portion is induction-heated by the first coil portion of the high-frequency coil, while the large-diameter portion is induction-heated by the second coil portion. Here, since the first coil pitch of the first coil portion is dense and the second coil pitch of the second coil portion is coarse, it is possible to supply appropriate electric power to the small diameter portion and the large diameter portion, respectively. it can. Therefore, it is possible to uniformly heat the rod-shaped material having different outer diameters along the axial direction as a whole with a simple structure.
And / or by simply changing the second coil pitch, it becomes possible to easily handle heating of various rod-shaped materials having different diameters.
【００２６】また、第１および第２コイル部位を通過し
た棒状素材が、第３コイル部位に対応して配置されるこ
とにより、この棒状素材全体が所定の温度に均一な状態
で保温され、該棒状素材の加熱処理が一層高精度に遂行
される。Further, since the rod-shaped material that has passed through the first and second coil portions is arranged corresponding to the third coil portion, the entire rod-shaped material is kept warm at a predetermined temperature in a uniform state, The heat treatment of the rod-shaped material is performed with higher accuracy.
【図１】本発明の実施例に係る成形用素材の加熱装置の
要部正面説明図である。FIG. 1 is a front view showing the main part of a heating device for a molding material according to an embodiment of the present invention.
【図２】前記加熱装置の側面図である。FIG. 2 is a side view of the heating device.
【図３】前記加熱装置により加熱される棒状素材の説明
図である。FIG. 3 is an explanatory diagram of a rod-shaped material heated by the heating device.
【図４】前記加熱装置で棒状素材を加熱する実験の結果
を示す各部分の加熱温度分布図である。FIG. 4 is a heating temperature distribution chart of each part showing the result of an experiment of heating a rod-shaped material by the heating device.
１０、１０ａ、１０ｂ、１０ｃ…棒状素材 １２、１４…大径部 １６…小径部 ２０…加熱装置 ２２…移送手段 ２４…高周波コイル ３２、３４、３６…
コイル部位 ３８…筒体 ４０…プッシャ ４２…シュート部材 Ｐ１、Ｐ２、Ｐ３…
コイルピッチ10, 10a, 10b, 10c ... Rod-shaped material 12, 14 ... Large diameter part 16 ... Small diameter part 20 ... Heating device 22 ... Transfer means 24 ... High frequency coil 32, 34, 36 ...
Coil part 38 ... Cylindrical body 40 ... Pusher 42 ... Shoot member P1, P2, P3 ...
Coil pitch
───────────────────────────────────────────────────── フロントページの続き (72)発明者 木原 貴司 埼玉県狭山市新狭山１−10−１ ホンダエ ンジニアリング株式会社内 (72)発明者 杉田 浩 埼玉県狭山市新狭山１−10−１ ホンダエ ンジニアリング株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takashi Kihara 1-10-1 Shin-Sayama, Sayama-shi, Saitama Honda Engineering Co., Ltd. (72) Inventor Hiroshi Sugita 1-10-1 Shin-sayama, Sayama-shi, Saitama Prefecture Engineering Co., Ltd.
Claims (2)
材を、成形に先立って所定の温度に加熱するための加熱
装置であって、 前記棒状素材を前記軸方向に間歇送りする移送手段と、 前記棒状素材の外周を周回して該棒状素材の搬送路に配
設される高周波コイルと、 を備えるとともに、 前記高周波コイルは、前記棒状素材の停止位置にあって
該棒状素材の小径部に対応して設けられかつ所定の第１
コイルピッチに設定された第１コイル部位と、 前記棒状素材の停止位置にあって該棒状素材の大径部に
対応して設けられかつ前記第１コイルピッチより大きく
離間する第２コイルピッチに設定された第２コイル部位
と、 を備えることを特徴とする成形用素材の加熱装置。1. A heating device for heating a rod-shaped material having a different outer diameter along the axial direction to a predetermined temperature prior to molding, and a transfer means for intermittently feeding the rod-shaped material in the axial direction. And a high-frequency coil that circulates around the outer periphery of the rod-shaped material and is arranged in a conveyance path of the rod-shaped material, the high-frequency coil being at a stop position of the rod-shaped material and having a small diameter portion of the rod-shaped material. Corresponding to and predetermined first
A first coil portion set to a coil pitch, and a second coil pitch provided at a stop position of the rod-shaped material corresponding to a large-diameter portion of the rod-shaped material and separated from the first coil pitch by a larger distance. And a second coil portion that has been formed.
コイルは、前記第１および第２コイル部位と一体的にか
つ前記棒状素材の移送方向下流側に設けられ該棒状素材
全体を保熱するための第３コイル部位を備えることを特
徴とする成形用素材の加熱装置。2. The apparatus according to claim 1, wherein the high-frequency coil is provided integrally with the first and second coil parts and on the downstream side in the transfer direction of the rod-shaped material to retain heat of the entire rod-shaped material. A heating device for a molding material, comprising a third coil portion for:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5144921A JPH073325A (en) | 1993-06-16 | 1993-06-16 | Device for heating base stock for forming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5144921A JPH073325A (en) | 1993-06-16 | 1993-06-16 | Device for heating base stock for forming |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH073325A true JPH073325A (en) | 1995-01-06 |
Family
ID=15373330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5144921A Pending JPH073325A (en) | 1993-06-16 | 1993-06-16 | Device for heating base stock for forming |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH073325A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017227314A (en) * | 2016-06-24 | 2017-12-28 | Ntn株式会社 | Heat treatment method of rod-like workpiece |
| CN109312419A (en) * | 2016-06-24 | 2019-02-05 | Ntn株式会社 | Equipment for Heating Processing and heat treatment method |
-
1993
- 1993-06-16 JP JP5144921A patent/JPH073325A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017227314A (en) * | 2016-06-24 | 2017-12-28 | Ntn株式会社 | Heat treatment method of rod-like workpiece |
| CN109312417A (en) * | 2016-06-24 | 2019-02-05 | Ntn株式会社 | The heat treatment method of rod-shaped workpiece |
| CN109312419A (en) * | 2016-06-24 | 2019-02-05 | Ntn株式会社 | Equipment for Heating Processing and heat treatment method |
| EP3476955A4 (en) * | 2016-06-24 | 2019-12-04 | NTN Corporation | Heat treatment equipment and heat treatment method |
| EP3476954A4 (en) * | 2016-06-24 | 2020-03-18 | NTN Corporation | Heat treatment method of rod-shape workpiece |
| US10844447B2 (en) | 2016-06-24 | 2020-11-24 | Ntn Corporation | Heat treatment method of rod-shape workpiece |
| US11286535B2 (en) | 2016-06-24 | 2022-03-29 | Ntn Corporation | Heat treatment equipment and heat treatment method |
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