JP2006051691A - Heater for valve for molding - Google Patents

Heater for valve for molding Download PDF

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Publication number
JP2006051691A
JP2006051691A JP2004234870A JP2004234870A JP2006051691A JP 2006051691 A JP2006051691 A JP 2006051691A JP 2004234870 A JP2004234870 A JP 2004234870A JP 2004234870 A JP2004234870 A JP 2004234870A JP 2006051691 A JP2006051691 A JP 2006051691A
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electric wire
cover member
heater
wire
connection
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JP2004234870A
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Yoshihiro Horikawa
義広 堀川
Fujio Murayama
富士男 村山
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Mitsubishi Materials Corp
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Mitsubishi Materials Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To improve the connection strength between a heater body and an electric wire. <P>SOLUTION: A connection means 21a for the connection between the heater body 21b and the electric wire 25 has a relay member 31 and a cover member 34. In the relay member 31, a first through-hole 29 into which a nichrome wire 26 is inserted from one side is formed in the axial direction X, and a joint 30 made of a male screw is set on the other side. The electric wire 25 is inserted into the cover member 34 from the other side, a second through-hole 32 covering the periphery of the relay member 31 is formed in the axial direction X, and a connection receiving part 33 made of a female screw connected to the joint 30 is set on one side. The joint 30 is connected with the connection receiving part 33, the base end of the nichrome wire 26 is connected with the tip of the electric wire 25 in the cover member 34, and the other side of the cover member 34 is fixed to the electric wire 25. While the joint between the nichrome wire 26 and the electric wire 25 is protected in the cover member 34, since the base end side of the nichrome wire 26 and the tip of the electric wire 25 are connected with the relay member 31 and the cover member 34, respectively, the strength of the joint between the nichrome wire 26 and the electric wire 25 can be improved. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、樹脂の射出成形用金型などで用いられる成形用バルブのヒーターに関する。   The present invention relates to a heater for a molding valve used in a resin injection mold or the like.

従来、この種の成形用バルブの線状ヒーターは、バルブケーシングの外周面に設けられると共に、ヒーターカバーにより外周側から覆われて設けられている。そして、線状ヒーターは電熱線をステンレスからなる外管に同軸的に絶縁材を介して内蔵すると共に、接続手段を介して電線に接続しており、外管の端部からターミナルピンまでに渡って、カバー管が被せてある。このカバー管の一端側は外管に嵌合している。また、カバー管の一端は、外管に銀ろう付けされた封止部となっている。一方、カバー管の他端側は、薄肉の径大部となってガラスが充填されて防湿シールされている。さらに、カバー管の他端は、電線が圧着端子により接続されたターミナルピンにシリコンシールされた封止部となっている。そして、カバー管から電線の端部までにまたがってゴムチューブが被せてある（例えば特許文献１）。
特開平６−２３１８７２号公報 Conventionally, the linear heater of this type of molding valve is provided on the outer peripheral surface of the valve casing and is also provided so as to be covered from the outer peripheral side by a heater cover. The linear heater incorporates a heating wire coaxially in the outer tube made of stainless steel via an insulating material and is connected to the electric wire through the connecting means, and extends from the end of the outer tube to the terminal pin. The cover tube is covered. One end side of the cover tube is fitted to the outer tube. Also, one end of the cover tube is a sealed portion that is silver brazed to the outer tube. On the other hand, the other end side of the cover tube is a thin-walled large diameter portion that is filled with glass and is moisture-proof sealed. Furthermore, the other end of the cover tube is a sealed portion that is silicon-sealed to a terminal pin to which an electric wire is connected by a crimp terminal. And the rubber tube is covered over the edge part of an electric wire from a cover pipe (for example, patent documents 1).
JP-A-6-231872

しかし、従来技術においてはカバー管にはガラスが充填されて防湿シールしているので、取り付け時やその後の取り付け使用状態において外力が加わった際、カバー管がやや変形すると電熱線が断線してしまうなどというおそれがあった。   However, in the prior art, the cover tube is filled with glass and has a moisture-proof seal, so when an external force is applied at the time of installation or in the subsequent installation and use state, the heating wire will be disconnected if the cover tube is slightly deformed. There was a fear that.

解決しようとする問題点は、バルブケーシングの外周面に設けられる成形用バルブの線状ヒーターにおける線状ヒーター本体と電線との接続部において、耐強度の向上を図る点である。   The problem to be solved is to improve strength resistance at the connection portion between the linear heater main body and the electric wire in the linear heater of the molding valve provided on the outer peripheral surface of the valve casing.

請求項１の発明は、電熱線と外管との間に絶縁材を介在しバルブケーシングの外周面に設けられる線状のヒーター本体の基端を電線に接続手段を介して接続する成形用バルブのヒーターにおいて、前記接続手段は、一側より前記電熱線が挿入する第1の貫通孔を軸線方向に設ける共に他側に接続部を設けた中継部材と、他側より前記電線が挿入すると共に前記中継部材の外周を覆う第2の貫通孔を軸線方向に設け、かつ一側に前記接続部に接続する接続受け部を設けたカバー部材を備え、前記接続部を前記接続受け部に接続し、前記カバー部材内で前記電熱線の基端と前記電線の先端を接続し、前記カバー部材の他側を前記電線に固定することを特徴とする成形用バルブのヒーターである。   The invention according to claim 1 is a molding valve in which an insulating material is interposed between a heating wire and an outer tube, and a base end of a linear heater body provided on the outer peripheral surface of the valve casing is connected to an electric wire via a connecting means. In the heater, the connecting means includes a relay member in which a first through hole into which the heating wire is inserted from one side is provided in the axial direction and a connecting portion is provided on the other side, and the electric wire is inserted from the other side. A cover member provided with a second through hole covering the outer periphery of the relay member in the axial direction and provided with a connection receiving portion connected to the connection portion on one side, and connecting the connection portion to the connection receiving portion. In the cover member, the base end of the heating wire and the tip of the electric wire are connected to each other, and the other side of the cover member is fixed to the electric wire.

請求項２の発明は、前記接続部は雄螺子により形成され、前記接続受け部は前記雄螺子が螺着する雌螺子により形成されていることを特徴とする請求項１記載の成形用バルブのヒーターである。   According to a second aspect of the present invention, in the molding valve according to the first aspect, the connection portion is formed by a male screw, and the connection receiving portion is formed by a female screw to which the male screw is screwed. It is a heater.

請求項３の発明は、前記中継部材及びカバー部材は金属製であることを特徴とする請求項１又は２記載の成形用バルブのヒーターである。   A third aspect of the invention is the molding valve heater according to the first or second aspect, wherein the relay member and the cover member are made of metal.

請求項１の発明によれば、電熱線と電線の接続部はカバー部材に収納され、電熱線の基端側、電線の先端が中継部材、カバー部材に固定されていることで、電熱線と電線との接続部の耐強度を向上することができる。   According to invention of Claim 1, the connection part of a heating wire and an electric wire is accommodated in a cover member, and the proximal end side of a heating wire and the front-end | tip of an electric wire are being fixed to the relay member and the cover member, The strength strength of the connection portion with the electric wire can be improved.

請求項２の発明によれば、中継部材とカバー部材を簡単にしかも軸線を一致させて接続することができる。   According to the second aspect of the present invention, the relay member and the cover member can be connected easily with the axes aligned.

請求項３の発明によれば、曲げ強度や耐熱性等の耐強度をいっそう向上できる。   According to the invention of claim 3, the strength such as bending strength and heat resistance can be further improved.

本発明における好適な実施の形態について、添付図面を参照して説明する。なお、以下に説明する実施の形態は、特許請求の範囲に記載された本発明の内容を限定するものではない。また、以下に説明される構成の全てが、本発明の必須要件であるとは限らない。   Preferred embodiments of the present invention will be described with reference to the accompanying drawings. The embodiments described below do not limit the contents of the present invention described in the claims. In addition, all of the configurations described below are not necessarily essential requirements of the present invention.

図１〜図５は実施例１を示しており、図３は樹脂の射出成形に用いるバルブゲート式金型の一例を示している。同図において、１は固定型、２は可動型で、これら固定型１および可動型２は、図示上下方向へ移動して開閉し、型閉時にキャビティ３を内部に形成するものである。そして、固定型１は、固定側型板６の図示上側に受け板７，８があり、そのさらに上方に、図示していないヒーターを内蔵したマニホールド９が設けられている。受け板７には、ゲートブッシュ11が埋め込んで固定してあり、このゲートブッシュ11の下側先端部がキャビティ３へのゲート12となっている。また、マニホールド９と受け板８との間にバルブケーシング13が固定してある。このバルブケーシング13は、受け板７，８を貫通して下部がゲートブッシュ11内に位置している。そして、バルブケーシング13の内部は、このバルブケーシング13の上部に形成された斜め孔14を介してマニホールド９のランナー15に連通している。また、バルブケーシング13内には、ガイドブッシュ16が上部に固定されていると共に、ガイドリング17が下部に固定具18により固定されている。そして、これらガイドブッシュ16およびガイドリング17にバルブピン19が貫通されて支持されている。このバルブピン19は、図示していない油圧シリンダーにより上下方向に駆動され、ゲート12を開閉するものである。また、前記バルブケーシング13の外周面には、円筒コイル状のヒーター21が設けられている。このヒーター21は、円筒状のヒーターカバー22により外周側から覆われており、さらに、このヒータ ーカバー22の外周側に外筒23が設けられている。なお、24はヒーター21の内側でバルブケーシング13の外周面に設けられた温度センサー、25はヒーター21から金型外まで延びる給電用のリード線等と称する電線であり、外周には絶縁性被覆部25ａが設けられている。   1 to 5 show Example 1, and FIG. 3 shows an example of a valve gate type mold used for resin injection molding. In the figure, 1 is a fixed mold, 2 is a movable mold, and these fixed mold 1 and movable mold 2 move in the vertical direction in the figure to open and close, and form a cavity 3 inside when the mold is closed. The fixed mold 1 has receiving plates 7 and 8 on the upper side of the fixed-side mold plate 6 in the figure, and a manifold 9 containing a heater (not shown) in the upper side. A gate bush 11 is embedded and fixed in the receiving plate 7, and a lower end portion of the gate bush 11 serves as a gate 12 to the cavity 3. A valve casing 13 is fixed between the manifold 9 and the receiving plate 8. The valve casing 13 passes through the receiving plates 7 and 8 and the lower part is located in the gate bush 11. The interior of the valve casing 13 communicates with the runner 15 of the manifold 9 through an oblique hole 14 formed in the upper portion of the valve casing 13. In the valve casing 13, a guide bush 16 is fixed to the upper part, and a guide ring 17 is fixed to the lower part by a fixture 18. A valve pin 19 is penetrated and supported by the guide bush 16 and the guide ring 17. The valve pin 19 is driven up and down by a hydraulic cylinder (not shown) to open and close the gate 12. A cylindrical coil heater 21 is provided on the outer peripheral surface of the valve casing 13. The heater 21 is covered from the outer peripheral side by a cylindrical heater cover 22, and an outer cylinder 23 is provided on the outer peripheral side of the heater cover 22. In addition, 24 is a temperature sensor provided on the outer peripheral surface of the valve casing 13 inside the heater 21, 25 is an electric wire called a power supply lead wire extending from the heater 21 to the outside of the mold, and the outer periphery has an insulating coating A portion 25a is provided.

前記ヒーター21は、図４、５に示すように、線状のもので、一端部が非発熱部となって接続手段21ａになっており、それ以外はヒーター本体21bとなって発熱部としてコイル状に巻かれて、バルブケーシング13の外周面に嵌合されるものである。そして、ヒーター21は、電熱線である直線状のニクロム（ニッケル−クローム）線26をステンレスなどからなる断面角筒形の外筒27に同軸的に内蔵すると共に、これらニクロム線26と外管27との間およびニクロム線26間に絶縁材であるマグネシア28を介在させた構造になっている。   As shown in FIGS. 4 and 5, the heater 21 is linear and has one end portion as a non-heat generating portion as a connecting means 21a, and the other heater 21b as a heat generating portion as a coil. And is fitted to the outer peripheral surface of the valve casing 13. The heater 21 coaxially incorporates a linear nichrome (nickel-chrome) wire 26, which is a heating wire, into an outer tube 27 having a rectangular cross section made of stainless steel or the like, and the nichrome wire 26 and the outer tube 27. And magnesia 28, which is an insulating material, are interposed between the nichrome wire 26 and the nichrome wire 26.

ヒーター本体21bに電線25を接続するための接続手段21ａは、一側より電熱線26が挿入する第1の貫通孔29を軸線方向Ｘに設ける共に外周他側に径大となった雄螺子からなる接続部30を設けた円筒状のジャンクション等と称する中継部材31と、他側より電線25が挿入すると共に中継部材31の外周を覆う第2の貫通孔32を軸線方向Ｘに設け、外周一側に接続部30に接続する雌螺子からなる接続受け部33を設けたほぼ同一径の円筒状のジャンクションカバー等と称するカバー部材34を備える。なお、ニクロム線26における基端側においてはニクロム線26に、より抵抗の小さい導線であるニッケル線26ａを撚り合わせて、撚り線としてあり、このように断線を防ぐようにした撚り合わせ部分を、電線25の先端にロウ付け等の接続手段35を介して接続している。   The connecting means 21a for connecting the electric wire 25 to the heater main body 21b includes a first through hole 29 into which the heating wire 26 is inserted from one side in the axial direction X and a male screw having a large diameter on the other outer periphery. A relay member 31 referred to as a cylindrical junction provided with a connecting portion 30 and a second through hole 32 in which the electric wire 25 is inserted from the other side and covers the outer periphery of the relay member 31 are provided in the axial direction X. A cover member 34 referred to as a cylindrical junction cover or the like having substantially the same diameter and provided with a connection receiving portion 33 made of a female screw connected to the connection portion 30 is provided. In addition, on the base end side in the nichrome wire 26, the nickel wire 26a, which is a conductive wire having a lower resistance, is twisted to the nichrome wire 26 to form a stranded wire, and thus a twisted portion that prevents disconnection, The end of the electric wire 25 is connected via a connecting means 35 such as brazing.

そして、外管27の基端をロウ付け等の接続手段36により中継部材31の一側に封止するように接続すると共に、ニクロム線26を第1の貫通孔29に貫通して該第1の貫通孔29より突設させておき、一方電線25は第2の貫通孔32の他側より一側に貫通して、その先端を接続手段35によりニクロム線26に接続している。さらにカバー部材34の接続受け部33は接続部30に螺着して固定されると共に、カバー部材34の他側を径小に形成したカシメ部37により封止するように固定手段により電線25の絶縁性被覆部25ａを固定している。したがって、ニクロム線26と電線25の先端とはロウ付け等の接続手段35により接続されると共に、該接続手段35は中継部材31とカバー部材34との内部に封じ込まれて収容されている。さらに中継部材31とカバー部材34は、ステンレス鋼或いは真鍮等の金属によって形成されるものであり、耐蝕性や熱伝導率を考慮するとステンレス鋼が好ましい。   Then, the base end of the outer tube 27 is connected so as to be sealed to one side of the relay member 31 by connection means 36 such as brazing, and the nichrome wire 26 passes through the first through hole 29 and the first The electric wire 25 penetrates from the other side of the second through-hole 32 to one side, and the tip thereof is connected to the nichrome wire 26 by the connecting means 35. Further, the connection receiving portion 33 of the cover member 34 is screwed and fixed to the connection portion 30, and the other side of the cover member 34 is fixed by the fixing means so that the other side of the cover member 34 is sealed with a caulking portion 37 formed with a small diameter. The insulating covering portion 25a is fixed. Therefore, the nichrome wire 26 and the tip of the electric wire 25 are connected by connection means 35 such as brazing, and the connection means 35 is sealed and accommodated inside the relay member 31 and the cover member 34. Furthermore, the relay member 31 and the cover member 34 are formed of a metal such as stainless steel or brass, and stainless steel is preferable in consideration of corrosion resistance and thermal conductivity.

次に接続手段21ａの組み立てについて説明する。ニクロム線26を第1の貫通孔29に貫通して該第1の貫通孔29の他側より突設させた状態で、外管27の基端をロウ付け等の接続手段36により中継部材31の一側に封止するように接続する。次に図１の二点鎖線で示すようにカバー部材34を予め電線25に外嵌しておいた状態でニクロム線26と電線25とを接続する。この後、カバー部材34を移動して接続受け部33を接続部30に螺着してカバー部材34を固定し、さらにカバー部材34の他側にカシメ部37により電線25を固定するものである。   Next, assembly of the connecting means 21a will be described. In a state where the nichrome wire 26 penetrates the first through hole 29 and protrudes from the other side of the first through hole 29, the relay member 31 is connected to the base end of the outer tube 27 by connecting means 36 such as brazing. To be sealed to one side. Next, as shown by a two-dot chain line in FIG. 1, the nichrome wire 26 and the electric wire 25 are connected in a state in which the cover member 34 is fitted on the electric wire 25 in advance. Thereafter, the cover member 34 is moved, the connection receiving portion 33 is screwed to the connection portion 30 to fix the cover member 34, and the electric wire 25 is fixed to the other side of the cover member 34 by the crimping portion 37. .

次に前記構成についてその作用を説明する。成形時には、型閉し、かつ、ゲート12を開放した状態で、金型が取付けられた射出成形機から溶融樹脂を射出する。この溶融樹脂は、マニホールド９のランナー15およびバルブケーシング13内を通って、ゲート12からキャビティ３内に流入する。このキャビティ３内に充填された樹脂が固化した後、バルブピン18によりゲート12を閉じる。また、型開して、成形品を取り出す。その後、再び型閉されて、以上の工程が繰り返される。そして、全工程において、ヒーター21の加熱により、バルブケーシング13内の樹脂は、常時溶融状態に保たれて成形が行われる。   Next, the operation of the above configuration will be described. At the time of molding, the molten resin is injected from an injection molding machine to which a mold is attached while the mold is closed and the gate 12 is opened. The molten resin flows into the cavity 3 from the gate 12 through the runner 15 of the manifold 9 and the valve casing 13. After the resin filled in the cavity 3 is solidified, the gate 12 is closed by the valve pin 18. The mold is opened and the molded product is taken out. Thereafter, the mold is closed again, and the above steps are repeated. In all steps, the resin in the valve casing 13 is always kept in a molten state by the heating of the heater 21 and is molded.

したがって、ニクロム線26の基端側においては外管27の基端を接続手段36により中継部材31の一側に接続され、カバー部材34の他側にカシメ部37により電線25が固定され、しかもカバー部材34Ｍの内部にニクロム線26の基端側と電線25の先端との接続手段35による接続部が収納されていることにより、樹脂の成形の際や、或いはヒーター21を金型に組み込む際に、カバー部材34に外力が加わっても、ニクロム線26と電線25との接続部が保護されていることにより、ニクロム線26等の断線のおそれを低減することができる。   Therefore, on the base end side of the nichrome wire 26, the base end of the outer tube 27 is connected to one side of the relay member 31 by the connecting means 36, and the electric wire 25 is fixed to the other side of the cover member 34 by the crimping portion 37. The cover member 34M accommodates a connecting portion 35 connecting the base end side of the nichrome wire 26 and the tip end of the electric wire 25, so that when molding the resin or assembling the heater 21 into the mold. In addition, even when an external force is applied to the cover member 34, the connection between the nichrome wire 26 and the electric wire 25 is protected, so that the possibility of disconnection of the nichrome wire 26 and the like can be reduced.

以上のように、前記実施例においてはニクロム線26と電線25との接続手段21ａは、一側よりニクロム線26が挿入する第1の貫通孔29を軸線方向Ｘに設ける共に他側に接続部30を設けた中継部材31と、他側より電線25が挿入すると共に中継部材31の外周を覆う第2の貫通孔32を軸線方向Ｘに設け、一側に接続部30に接続する接続受け部33を設けたカバー部材34を備え、接続部30を接続受け部33に接続し、前記カバー部材34内でニクロム線26の基端と電線25の先端を接続し、カバー部材34の他側を電線25に固定することで、ニクロム線26と電線25との接続部がカバー部材34内で保護された状態で、ニクロム線26の基端側、電線25の先端が中継部材31、カバー部材34に固定されていることで、ニクロム線26と電線25との接続部の耐強度を向上することができる。   As described above, in the embodiment, the connecting means 21a between the nichrome wire 26 and the electric wire 25 is provided with the first through hole 29 into which the nichrome wire 26 is inserted from one side in the axial direction X and the connecting portion on the other side. A relay member 31 provided with 30 and a connection receiving portion for inserting the electric wire 25 from the other side and providing a second through hole 32 covering the outer periphery of the relay member 31 in the axial direction X and connecting to the connection portion 30 on one side A connecting member 30 is connected to the connection receiving portion 33, the proximal end of the nichrome wire 26 and the distal end of the electric wire 25 are connected in the cover member 34, and the other side of the covering member 34 is connected By fixing to the electric wire 25, the connection portion between the nichrome wire 26 and the electric wire 25 is protected in the cover member 34, and the proximal end side of the nichrome wire 26 and the distal end of the electric wire 25 are the relay member 31 and the cover member 34. By being fixed to, the strength resistance of the connection portion between the nichrome wire 26 and the electric wire 25 can be improved.

また、前記接続部30は雄螺子により形成され、前記接続受け部33は前記雄螺子が螺着する雌螺子により形成されていることにより、両者を螺着することで中継部材31とカバー部材34を簡単にしかも軸線Ｘを一致させて接続することができる。   Further, since the connecting portion 30 is formed by a male screw and the connection receiving portion 33 is formed by a female screw to which the male screw is screwed, the relay member 31 and the cover member 34 are screwed together. Can be connected with the axis X coincided.

さらに、中継部材31及びカバー部材34は金属製であるので、曲げ強度や引張強度の他に耐熱性を向上でき、耐強度をいっそう向上できる。   Furthermore, since the relay member 31 and the cover member 34 are made of metal, heat resistance can be improved in addition to bending strength and tensile strength, and the strength resistance can be further improved.

以上のように本発明にかかる成形用バルブのヒーターにおいては、接続部と接続受け部とを嵌着などにより接続するようにしてもよいなど種々の変形が可能である。   As described above, the heater of the molding valve according to the present invention can be variously modified such that the connection portion and the connection receiving portion may be connected by fitting or the like.

本発明の実施例１示す接続手段の透視斜視図である。It is a see-through | perspective perspective view of the connection means which shows Example 1 of this invention. 本発明の実施例１を示す接続手段の分解断面図である。It is an exploded sectional view of the connection means showing Example 1 of the present invention. 本発明の実施例１を示す金型全体の断面図である。It is sectional drawing of the whole metal mold | die which shows Example 1 of this invention. 本発明の実施例１を示す電熱線の一部切り欠き斜視図である。It is a partially cutaway perspective view of a heating wire showing Example 1 of the present invention. 本発明の実施例１を示すヒーターの斜視図である。It is a perspective view of the heater which shows Example 1 of this invention.

符号の説明Explanation of symbols

21 ヒーター
21ａ 接続手段
21ｂ ヒーター本体
25 電線
26 ニクロム線（電熱線）
27 外管
28 マグネシア（絶縁材）
29 第1の貫通孔
30 接続部
31 中継部材
32 第2の貫通孔
33 接続受け部
34 カバー部材
Ｘ 軸線方向 21 Heater
21a Connection method
21b Heater body
25 wire
26 Nichrome wire (heating wire)
27 outer pipe
28 Magnesia (insulating material)
29 1st through hole
30 connections
31 Relay member
32 Second through hole
33 Connection receiver
34 Cover member X Axial direction

Claims (3)

電熱線と外管との間に絶縁材を介在しバルブケーシングの外周面に設けられる線状のヒーター本体の基端を電線に接続手段を介して接続する成形用バルブのヒーターにおいて、前記接続手段は、一側より前記電熱線が挿入する第1の貫通孔を軸線方向に設ける共に他側に接続部を設けた中継部材と、他側より前記電線が挿入すると共に前記中継部材の外周を覆う第2の貫通孔を軸線方向に設け、かつ一側に前記接続部に接続する接続受け部を設けたカバー部材を備え、前記接続部を前記接続受け部に接続し、前記カバー部材内で前記電熱線の基端と前記電線の先端を接続し、前記カバー部材の他側を前記電線に固定することを特徴とする成形用バルブのヒーター。   In the heater for a molding valve in which an insulating material is interposed between the heating wire and the outer tube, and the base end of a linear heater body provided on the outer peripheral surface of the valve casing is connected to the electric wire via the connecting means, the connecting means Are provided with a first through-hole into which the heating wire is inserted from one side in the axial direction and a relay member provided with a connection portion on the other side, and the electric wire is inserted from the other side and covers the outer periphery of the relay member A cover member provided with a second through hole in the axial direction and provided with a connection receiving portion connected to the connection portion on one side, connecting the connection portion to the connection receiving portion, and within the cover member A heater for a molding valve, wherein a base end of a heating wire and a tip of the electric wire are connected, and the other side of the cover member is fixed to the electric wire. 前記接続部は雄螺子により形成され、前記接続受け部は前記雄螺子が螺着する雌螺子により形成されていることを特徴とする請求項１記載の成形用バルブのヒーター。   2. The heater for a molding valve according to claim 1, wherein the connecting portion is formed by a male screw, and the connection receiving portion is formed by a female screw to which the male screw is screwed. 前記中継部材及びカバー部材は金属製であることを特徴とする請求項１又は２記載の成形用バルブのヒーター。   3. The molding valve heater according to claim 1, wherein the relay member and the cover member are made of metal.
JP2004234870A 2004-08-11 2004-08-11 Heater for valve for molding Withdrawn JP2006051691A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004234870A JP2006051691A (en) 2004-08-11 2004-08-11 Heater for valve for molding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004234870A JP2006051691A (en) 2004-08-11 2004-08-11 Heater for valve for molding

Publications (1)

Publication Number Publication Date
JP2006051691A true JP2006051691A (en) 2006-02-23

Family

ID=36029463

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004234870A Withdrawn JP2006051691A (en) 2004-08-11 2004-08-11 Heater for valve for molding

Country Status (1)

Country Link
JP (1) JP2006051691A (en)

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