JP2018008857A - Electrode holder and electrode unit - Google Patents

Electrode holder and electrode unit Download PDF

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JP2018008857A
JP2018008857A JP2016140403A JP2016140403A JP2018008857A JP 2018008857 A JP2018008857 A JP 2018008857A JP 2016140403 A JP2016140403 A JP 2016140403A JP 2016140403 A JP2016140403 A JP 2016140403A JP 2018008857 A JP2018008857 A JP 2018008857A
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electrode
holder
electrode holder
melting furnace
accommodation hole
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JP6794691B2 (en
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昌樹 藤原
Masaki Fujiwara
昌樹 藤原
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Nippon Electric Glass Co Ltd
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Nippon Electric Glass Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide an electrode holder capable of inserting an electrode smoothly thereinto.SOLUTION: In an electrode holder 12 for inserting and holding a rod-like electrode 11 for glass melting, a holding jig 19 for holding the electrode 11 has a spherical body, and is assembled rotatably to the electrode holder 12 body, and is rotated when the electrode 11 collides or is slide contacted therewith at the insertion time of the electrode 11 into the electrode holder 12.SELECTED DRAWING: Figure 1

Description

本発明は、電極ホルダ及び電極ユニットに関するものである。   The present invention relates to an electrode holder and an electrode unit.

従来、ガラスの溶融方式の１つとして、溶融炉内に直接挿入された棒状の電極に通電し、そのジュール熱により溶融炉内のガラスを溶融する直接通電加熱方式が知られている。この方式に用いられる電極は、例えば特許文献１にて開示の筒状の電極ホルダの内側部分に挿入した状態で保持されている。   Conventionally, as one of glass melting methods, a direct current heating method is known in which a rod-shaped electrode inserted directly into a melting furnace is energized and the glass in the melting furnace is melted by its Joule heat. The electrode used in this method is held in a state of being inserted into an inner portion of a cylindrical electrode holder disclosed in Patent Document 1, for example.

特開２０１２−２２９１５３号公報JP 2012-229153 A

ところで、電極ホルダは、保持する電極と電気的に絶縁させる必要がある。そのため、電極ホルダ本体の内周面から突出するように保持具（特許文献１ではスペーサ部材）が複数設置され、各保持具が協働して電極を保持することで、電極と電極ホルダ本体との絶縁が図られている。   By the way, the electrode holder needs to be electrically insulated from the electrode to be held. Therefore, a plurality of holders (spacer members in Patent Document 1) are installed so as to protrude from the inner peripheral surface of the electrode holder main body, and the respective holders cooperate to hold the electrode, so that the electrode, the electrode holder main body, Is insulated.

一方で、電極を電極ホルダに挿入する際に電極が保持具と接触し、保持具が破損するおそれがある。そのため、保持具を含む電極の保持態様に工夫がないと、電極ホルダへの電極の挿入作業を極めて慎重に行う必要があり、煩雑な作業となってしまう。   On the other hand, when the electrode is inserted into the electrode holder, the electrode may come into contact with the holder and the holder may be damaged. Therefore, if there is no contrivance in the manner of holding the electrode including the holder, it is necessary to perform the work of inserting the electrode into the electrode holder extremely carefully, which is a complicated work.

本発明は、上記課題を解決するためになされたものであって、その目的は、電極をスムーズで簡単に挿入することが可能な電極ホルダ、及びその電極ホルダを用いる電極ユニットを提供することにある。   The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an electrode holder capable of inserting an electrode smoothly and easily, and an electrode unit using the electrode holder. is there.

上記課題を解決する電極ホルダは、ガラス溶融用の棒状の電極を挿通して保持する電極ホルダであって、筒状をなす電極ホルダ本体の内側面から一部が突出し、前記電極ホルダ本体の内側を挿通する前記電極を保持すべく前記電極の外側面と当接する保持具を備え、前記保持具は、球体状をなし、前記電極ホルダ本体に対して回転可能に組み付けられている。   An electrode holder that solves the above problems is an electrode holder that inserts and holds a rod-shaped electrode for melting glass, a part of which protrudes from the inner surface of the cylindrical electrode holder main body, and the inner side of the electrode holder main body A holder that abuts against the outer surface of the electrode to hold the electrode, and the holder has a spherical shape and is rotatably assembled to the electrode holder body.

この構成によれば、電極ホルダの保持具は、球体状で電極ホルダ本体に対して回転可能に組み付けられるため、電極ホルダへの電極の挿入時に電極に対する衝撃や摩擦等を自身で回転することで軽減する。これにより、電極をスムーズで簡単に電極ホルダに対して挿入することができる。   According to this configuration, since the holder of the electrode holder is spherical and is assembled to the electrode holder main body so as to be rotatable, when the electrode is inserted into the electrode holder, the impact or friction on the electrode is rotated by itself. Reduce. Thereby, an electrode can be smoothly and easily inserted into an electrode holder.

上記電極ホルダにおいて、前記保持具は、絶縁材にて構成されている。
この構成によれば、電極に直接接触する保持具自身が絶縁体にて構成されるため、保持具周りを特段絶縁構造としなくても、電極と電極ホルダとの間の電気的な絶縁を図ることができる。 In the electrode holder, the holder is made of an insulating material.
According to this configuration, since the holder itself that is in direct contact with the electrode is formed of an insulator, electrical insulation between the electrode and the electrode holder can be achieved without a special insulating structure around the holder. be able to.

上記電極ホルダにおいて、前記保持具は、前記電極の周方向所定間隔に複数配列され、前記電極の軸方向の離間した位置に少なくとも２列以上配置されている。
この構成によれば、電極の周方向所定間隔に複数配列される保持具は、電極の軸方向の離間した位置に少なくとも２列以上配置されているため、１列状に配置するよりも電極の傾斜抑制に寄与することができる。また後述するが、保持具を収容孔に収容する態様と組み合わせた場合、保持具の配置を２列以上とすれば収容孔も２列以上となるため、収容孔の形成による電極ホルダの剛性低下を抑制することもできる。 In the electrode holder, a plurality of the holders are arranged at predetermined intervals in the circumferential direction of the electrode, and at least two rows are arranged at positions spaced apart in the axial direction of the electrode.
According to this configuration, since the plurality of holders arranged at predetermined intervals in the circumferential direction of the electrode are arranged in at least two rows at positions spaced apart in the axial direction of the electrode, the holder of the electrode is arranged rather than arranged in a single row. This can contribute to tilt suppression. As will be described later, when combined with a mode in which the holder is accommodated in the accommodation hole, if the arrangement of the holder is two or more rows, the accommodation holes are also two or more rows, so the rigidity of the electrode holder is reduced due to the formation of the accommodation holes. Can also be suppressed.

上記電極ホルダにおいて、前記電極ホルダ本体には、前記保持具を収容するための収容孔が径方向に貫通形成されるとともに前記収容孔の径方向内側開口から前記保持具の抜け出しが不能となるような開口形状に形成され、前記収容孔に収容状態の前記保持具に当接するような嵌め入れ部材の嵌入にて前記保持具が組み付けられている。   In the electrode holder, an accommodation hole for accommodating the holder is formed in the electrode holder main body in a radial direction so that the holder cannot be pulled out from a radially inner opening of the accommodation hole. The holding tool is assembled by fitting a fitting member that is formed in an open shape and comes into contact with the holding tool in the accommodated state in the accommodation hole.

この構成によれば、保持具は電極ホルダ本体の収容孔に収容され嵌め入れ部材の嵌入にて組み付けられるため、収容孔と嵌め入れ部材とを用いる簡易な構造にて保持具を組み付けることができる。   According to this configuration, since the holder is accommodated in the accommodation hole of the electrode holder body and assembled by fitting the fitting member, the holder can be assembled with a simple structure using the accommodation hole and the fitting member. .

上記電極ホルダにおいて、前記電極ホルダが溶融炉に組み付けられている状態において、前記保持具は、前記電極ホルダの前記溶融炉側の端部に設けられている。
この構成によれば、保持具は電極ホルダの溶融炉側の端部に設けられる、すなわち電極の挿入奥側となる溶融炉側の端部に設けられるため、電極の挿入作業を容易とすることができる。 In the electrode holder, in a state where the electrode holder is assembled in the melting furnace, the holder is provided at an end of the electrode holder on the melting furnace side.
According to this configuration, since the holder is provided at the end of the electrode holder on the melting furnace side, that is, provided at the end of the melting furnace side which is the back side of the electrode insertion, the electrode insertion work can be facilitated. Can do.

上記課題を解決する電極ユニットは、上記電極ホルダに前記電極が挿通されて保持されている。
この構成によれば、電極をスムーズで簡単に挿入可能な電極ホルダを有する電極ユニットとして提供することができる。 In the electrode unit that solves the above-described problems, the electrode is inserted and held in the electrode holder.
According to this structure, it can provide as an electrode unit which has an electrode holder which can insert an electrode smoothly and easily.

本発明の電極ホルダ及び電極ユニットによれば、電極をスムーズで簡単に電極ホルダに対して挿入することができる。   According to the electrode holder and the electrode unit of the present invention, the electrode can be smoothly and easily inserted into the electrode holder.

実施形態の電極ユニット（電極ホルダ）の全体を示す断面図。Sectional drawing which shows the whole electrode unit (electrode holder) of embodiment. 同形態の電極ユニット（電極ホルダ）の一部を拡大した断面図。Sectional drawing which expanded a part of electrode unit (electrode holder) of the same form.

以下、電極ユニット（電極ホルダ）の一実施形態について説明する。
図１に示すように、本実施形態の電極ユニット１０は、電極１１と、電極１１を保持する電極ホルダ１２とを備えて構成されている。電極ユニット１０は、溶融炉３０の壁部の例えば底壁３１を貫通する貫通孔３１ａに電極ホルダ１２の先端部が挿入されて支持されている。 Hereinafter, an embodiment of the electrode unit (electrode holder) will be described.
As shown in FIG. 1, the electrode unit 10 of this embodiment includes an electrode 11 and an electrode holder 12 that holds the electrode 11. The electrode unit 10 is supported by inserting the tip end portion of the electrode holder 12 into a through hole 31 a penetrating the bottom wall 31 of the wall portion of the melting furnace 30.

電極１１は、モリブデン（導電金属）製で円棒状をなしている。電極１１は、先端部が溶融炉３０内に所定長さ露出するように電極ホルダ１２にて保持されている。電極１１の基端部は、外部電源（図示略）と接続され、自身の加熱のための電源供給を受けている。そして、電極１１は、給電による自身（先端部）の加熱により、溶融炉３０内のガラスＧの直接的な加熱を行う。   The electrode 11 is made of molybdenum (conductive metal) and has a circular bar shape. The electrode 11 is held by the electrode holder 12 so that the tip portion is exposed in the melting furnace 30 for a predetermined length. The base end portion of the electrode 11 is connected to an external power source (not shown) and receives power supply for heating itself. The electrode 11 directly heats the glass G in the melting furnace 30 by heating itself (tip portion) by power feeding.

電極ホルダ１２は、金属製で円筒状をなしている。電極ホルダ１２の先端部分は、先端挿入部１２ａとして溶融炉３０の底壁３１の貫通孔３１ａに挿入され、先端挿入部１２ａの先端端面が底壁３１の内側面と略面一となるように電極ホルダ１２が設置されている。この場合、電極ホルダ１２は、自身の基端寄りの外周面に設けたフランジ部１３が、溶融炉３０の底壁３１に設けた取付部３２に対して取付ボルト（図示略）等により取り付けられることで、溶融炉３０に対して固定されている。   The electrode holder 12 is made of metal and has a cylindrical shape. The tip portion of the electrode holder 12 is inserted into the through hole 31a of the bottom wall 31 of the melting furnace 30 as the tip insertion portion 12a so that the tip end surface of the tip insertion portion 12a is substantially flush with the inner side surface of the bottom wall 31. An electrode holder 12 is installed. In this case, the electrode holder 12 has a flange portion 13 provided on the outer peripheral surface near the base end of the electrode holder 12 attached to an attachment portion 32 provided on the bottom wall 31 of the melting furnace 30 with an attachment bolt (not shown) or the like. Thus, it is fixed to the melting furnace 30.

電極ホルダ１２の先端挿入部１２ａは、溶融炉３０に近い約１／４部分が充実部分１４であり、溶融炉３０より遠い残りの約３／４部分が中空部分１５となっている。
先端挿入部１２ａの中空部分１５には、円筒状の電極ホルダ１２を構成する周壁１２ｂ内を周方向に沿って環状をなす環状流路１５ａが設けられている。中空部分１５の反挿入側部は、環状流路１５ａが閉塞されており、対をなす入水管１６ａと出水管１６ｂとがそれぞれ接続されている。入水管１６ａ及び出水管１６ｂは、溶融炉３０から離間する方向に周壁１２ｂから延出している外壁１２ｃにて覆われるようにして配置され、一端は環状流路１５ａと連通し、他端は電極ホルダ１２の外部まで延びている。そして、外部の冷却装置（図示略）から冷却水が入水管１６ａを通って環状流路１５ａに導入され、電極ホルダ１２の内側に配置される電極１１を取り囲むようにして冷却する。環状流路１５ａ内に導入された冷却水は、出水管１６ｂを通って外部に吐出される。 In the tip insertion portion 12 a of the electrode holder 12, the approximately 1/4 portion close to the melting furnace 30 is the solid portion 14, and the remaining approximately 3/4 portion far from the melting furnace 30 is the hollow portion 15.
The hollow portion 15 of the distal end insertion portion 12a is provided with an annular flow path 15a that forms an annular shape along the circumferential direction in the peripheral wall 12b constituting the cylindrical electrode holder 12. On the opposite side of the hollow portion 15, the annular flow path 15a is closed, and a pair of water inlet pipe 16a and water outlet pipe 16b are connected to each other. The water inlet pipe 16a and the water outlet pipe 16b are arranged so as to be covered with an outer wall 12c extending from the peripheral wall 12b in a direction away from the melting furnace 30, one end communicates with the annular flow path 15a, and the other end is an electrode. It extends to the outside of the holder 12. Then, cooling water is introduced from an external cooling device (not shown) into the annular flow path 15a through the water inlet pipe 16a, and is cooled so as to surround the electrode 11 disposed inside the electrode holder 12. The cooling water introduced into the annular flow path 15a is discharged to the outside through the water discharge pipe 16b.

図２に示すように、先端挿入部１２ａの充実部分１４には、電極１１の先端寄り部位を保持する保持構造１７が構成されている。本実施形態の保持構造１７は、軸方向に所定間隔を有して２列の第１及び第２保持部１７ａ，１７ｂを有している。第１及び第２保持部１７ａ，１７ｂは、それぞれ周方向等間隔に例えば３又は４箇所、合計６又は８箇所程度設けられるとともに、周方向において互い違いになるように配置、すなわち隣接の第１保持部１７ａ間に第２保持部１７ｂが位置するように配置されている。各保持部１７ａ，１７ｂは、同一構成をなしそれぞれ先端挿入部１２ａの充実部分１４に径方向に貫通形成される収容孔１８内に保持具１９を収容し、保持具１９を収容孔１８内で位置決めする支持ねじ２０（嵌め入れ部材）が収容孔１８に螺入されてなる。   As shown in FIG. 2, a holding structure 17 that holds a portion closer to the tip end of the electrode 11 is configured in the solid portion 14 of the tip insertion portion 12 a. The holding structure 17 of the present embodiment has two rows of first and second holding portions 17a and 17b with a predetermined interval in the axial direction. The first and second holding portions 17a and 17b are provided, for example, at three or four places, for a total of six or eight places, at equal intervals in the circumferential direction, and arranged so as to be staggered in the circumferential direction, that is, adjacent first holding pieces. It arrange | positions so that the 2nd holding | maintenance part 17b may be located between the parts 17a. Each holding portion 17a, 17b has the same configuration, and each holding portion 19 is accommodated in a receiving hole 18 that is formed through the solid portion 14 of the distal end insertion portion 12a in the radial direction. A support screw 20 (fitting member) to be positioned is screwed into the accommodation hole 18.

保持具１９は、再結晶アルミナからなる球体状をなし、電極１１の外周面に当接する。これに対し、電極ホルダ１２本体側に設けた収容孔１８は、保持具１９を収容可能であり、径方向内側開口１８ａが保持具１９よりも小さい、すなわち保持具１９の一部が電極ホルダ１２（電極ホルダ１２本体）の内周面１２ｄから突出可能でありながら、径方向内側に抜け出し不能に形成されている。また、収容孔１８の内周面は、ねじ山が形成されている。そして、収容孔１８には、保持具１９が収容された状態で、径方向外側から支持ねじ２０が螺入される。このとき、支持ねじ２０は、保持具１９の一部が電極ホルダ１２の内周面１２ｄから突出するまで螺入され、しかも保持具１９が収容孔１８内で回転できるような位置まで螺入されている。   The holder 19 has a spherical shape made of recrystallized alumina and abuts on the outer peripheral surface of the electrode 11. On the other hand, the accommodation hole 18 provided on the electrode holder 12 main body side can accommodate the holder 19, and the radially inner opening 18 a is smaller than the holder 19, that is, a part of the holder 19 is part of the electrode holder 12. While being able to protrude from the inner peripheral surface 12d of the (electrode holder 12 main body), it is formed so as not to come out radially inward. Further, a thread is formed on the inner peripheral surface of the accommodation hole 18. Then, the support screw 20 is screwed into the accommodation hole 18 from the outside in the radial direction in a state where the holder 19 is accommodated. At this time, the support screw 20 is screwed in until a part of the holder 19 protrudes from the inner peripheral surface 12 d of the electrode holder 12, and is screwed into a position where the holder 19 can rotate in the accommodation hole 18. ing.

このような保持構造１７（第１及び第２保持部１７ａ，１７ｂ）において、複数の保持具１９が電極１１の先端寄りの部位に当接し、複数の保持具１９で協働して電極１１を保持している。このように保持具１９によって電極１１を保持することで、電極１１と電極ホルダ１２との間に数ｍｍ程度の空隙が形成されるようになっているため、電極１１と電極ホルダ１２との絶縁が図られている。また、保持具１９自身が絶縁材であることから、電極１１の外周面と当接状態でも互いの絶縁が図られている。   In such a holding structure 17 (first and second holding portions 17 a and 17 b), the plurality of holding tools 19 abut on the portion near the tip of the electrode 11, and the plurality of holding tools 19 cooperate to hold the electrode 11. keeping. Since the electrode 11 is held by the holder 19 in this way, a gap of about several millimeters is formed between the electrode 11 and the electrode holder 12, so that the insulation between the electrode 11 and the electrode holder 12 is achieved. Is planned. Moreover, since the holder 19 itself is an insulating material, mutual insulation is achieved even in a contact state with the outer peripheral surface of the electrode 11.

なお、電極ホルダ１２の基端側には、絶縁性を有する材料からなる円筒状の基端側保持部材２１が組み付けられている。基端側保持部材２１は、電極１１の基端側部位を保持するとともに、入水管１６ａ及び出水管１６ｂを挿通保持している。   A cylindrical proximal end holding member 21 made of an insulating material is assembled on the proximal end side of the electrode holder 12. The base end side holding member 21 holds the base end side portion of the electrode 11 and inserts and holds the water inlet pipe 16a and the water outlet pipe 16b.

このような構成の電極ユニット１０においては、初期設置時や操業途中に消耗した電極１１を継ぎ足す際等、溶融炉３０に固定された電極ホルダ１２に電極１１を基端側（反溶融炉３０側）から挿入することが行われる。電極１１は、電極ホルダ１２の基端側（反溶融炉３０側）から挿入される。その際、電極ホルダ１２の先端側では内周面１２ｄから保持具１９が突出しているものの、球体状をなす保持具１９は、電極１１が衝突や摺接すると回転し衝撃や摩擦等を自身で軽減し、電極１１を電極ホルダ１２にスムーズで簡単に挿入することに寄与する。   In the electrode unit 10 having such a configuration, the electrode 11 is connected to the electrode holder 12 fixed to the melting furnace 30 at the base end side (anti-melting furnace 30), for example, when initializing or when the electrode 11 consumed during operation is added. Insertion from the side). The electrode 11 is inserted from the base end side (anti-melting furnace 30 side) of the electrode holder 12. At this time, although the holder 19 protrudes from the inner peripheral surface 12d on the tip end side of the electrode holder 12, the spherical holder 19 rotates when the electrode 11 collides or slides and causes impact or friction by itself. This contributes to smooth and easy insertion of the electrode 11 into the electrode holder 12.

次に、本実施形態の特徴的な効果を記載する。
（１）電極ホルダ１２の保持具１９は、球体状で電極ホルダ１２本体（先端挿入部１２ａの充実部分１４）に対して回転可能に組み付けられるため、電極ホルダ１２への電極１１の挿入時に電極１１に対する衝撃や摩擦等を自身で回転することで軽減する。これにより、電極１１をスムーズで簡単に電極ホルダ１２に対して挿入することができる。また、保持具１９自身の破損も発生しづらくなる。 Next, characteristic effects of the present embodiment will be described.
(1) Since the holder 19 of the electrode holder 12 has a spherical shape and is rotatably assembled to the electrode holder 12 main body (the solid portion 14 of the tip insertion portion 12a), the electrode 19 is inserted when the electrode 11 is inserted into the electrode holder 12. 11 to reduce the impact and friction by rotating by itself. Thereby, the electrode 11 can be inserted into the electrode holder 12 smoothly and easily. In addition, it is difficult for the holder 19 itself to be damaged.

（２）電極１１に直接接触する保持具１９自身が絶縁体である再結晶アルミナにて構成されるため、保持具１９周りを特段絶縁構造としなくても、電極１１と電極ホルダ１２との間の電気的な絶縁を図ることができる。   (2) Since the holder 19 that is in direct contact with the electrode 11 is made of recrystallized alumina, which is an insulator, the area between the electrode 11 and the electrode holder 12 can be obtained without a special insulating structure around the holder 19 It is possible to achieve electrical insulation.

（３）電極１１の周方向等間隔に複数配列される本実施形態の保持具１９は、電極１１の軸方向の離間した位置に２列で配置されるため、１列状に配置するよりも電極１１の傾斜抑制に寄与することができる。また、保持具１９を収容孔１８に収容する本実施形態のような場合、収容孔１８の形成による電極ホルダ１２本体（先端挿入部１２ａの充実部分１４）の剛性の低下を抑制することができる。   (3) Since a plurality of holders 19 of the present embodiment arranged at equal intervals in the circumferential direction of the electrodes 11 are arranged in two rows at positions spaced apart in the axial direction of the electrodes 11, rather than arranged in a single row. This can contribute to suppression of the inclination of the electrode 11. Further, in the case of the present embodiment in which the holder 19 is accommodated in the accommodation hole 18, it is possible to suppress a decrease in rigidity of the electrode holder 12 main body (the solid portion 14 of the tip insertion portion 12 a) due to the formation of the accommodation hole 18. .

（４）保持具１９は電極ホルダ１２本体の収容孔１８に収容され支持ねじ２０の螺入にて組み付けられるため、収容孔１８と支持ねじ２０とを用いる簡易な構造にて保持具１９を組み付けることができる。なお、保持具１９の支持構造は上記に限らず、支持ねじ２０に代えて、穴埋めキャップ等の部材を収容孔１８に嵌入して保持具１９を組み付けてもよい。   (4) Since the holder 19 is accommodated in the accommodation hole 18 of the electrode holder 12 main body and is assembled by screwing the support screw 20, the holder 19 is assembled with a simple structure using the accommodation hole 18 and the support screw 20. be able to. The support structure of the holder 19 is not limited to the above, and the holder 19 may be assembled by fitting a member such as a hole filling cap into the accommodation hole 18 instead of the support screw 20.

（５）保持具１９は電極ホルダ１２の先端挿入部１２ａの充実部分１４に設けられる、すなわち電極１１の挿入奥側となる溶融炉３０側の端部に設けられるため、電極１１の挿入作業を容易とすることができる。   (5) Since the holder 19 is provided in the solid portion 14 of the distal end insertion portion 12a of the electrode holder 12, that is, provided at the end of the melting furnace 30 side which is the insertion back side of the electrode 11, the insertion work of the electrode 11 is performed. Can be easy.

なお、上記実施形態は、以下のように変更してもよい。
・上記実施形態では、電極１１はモリブデン製であったが、電極１１の材料はこれに限定されない。 In addition, you may change the said embodiment as follows.
In the above embodiment, the electrode 11 is made of molybdenum, but the material of the electrode 11 is not limited to this.

・上記実施形態では、保持具１９は絶縁材である再結晶アルミナ製であったが、他の絶縁材料を用いてもよい。また、保持具１９に導電性を有する材料を用いてもよく、この場合、保持具１９周りを絶縁構造とすればよい。   In the above embodiment, the holder 19 is made of recrystallized alumina which is an insulating material, but other insulating materials may be used. Moreover, you may use the material which has electroconductivity for the holder 19, and what is necessary is just to make the surroundings of the holder 19 into an insulating structure.

・上記実施形態では、保持部１７ａ，１７ｂ（保持具１９）は周方向等間隔に６又は８箇所設け、軸方向に２列配置であったが、数の増減、偶数又は奇数、不等間隔、１列又は３列以上の配置等、適宜変更可能である。   In the above embodiment, the holding portions 17a and 17b (holding tools 19) are provided at six or eight circumferentially spaced intervals and arranged in two rows in the axial direction. The arrangement of one row or three or more rows can be appropriately changed.

・上記実施形態では、電極ユニット１０は溶融炉３０の底壁３１に配置されていたが、溶融炉３０の側壁や上壁に配置するものであってもよい。   In the above embodiment, the electrode unit 10 is disposed on the bottom wall 31 of the melting furnace 30, but may be disposed on the side wall or the upper wall of the melting furnace 30.

１０…電極ユニット、１１…電極、１２…電極ホルダ、１４…充実部分（端部）、１２ｄ…内周面（内側面）、１８…収容孔、１８ａ…径方向内側開口、１９…保持具、２０…支持ねじ（嵌め入れ部材）、３０…溶融炉。   DESCRIPTION OF SYMBOLS 10 ... Electrode unit, 11 ... Electrode, 12 ... Electrode holder, 14 ... Solid part (end part), 12d ... Inner peripheral surface (inner side surface), 18 ... Housing hole, 18a ... Radial direction inner side opening, 19 ... Holder 20 ... support screw (insertion member), 30 ... melting furnace.

Claims (6)

ガラス溶融用の棒状の電極を挿通して保持する電極ホルダであって、
筒状をなす電極ホルダ本体の内側面から一部が突出し、前記電極ホルダ本体の内側を挿通する前記電極を保持すべく前記電極の外側面と当接する保持具を備え、
前記保持具は、球体状をなし、前記電極ホルダ本体に対して回転可能に組み付けられていることを特徴とする電極ホルダ。 An electrode holder for inserting and holding a rod-shaped electrode for melting glass,
A part protrudes from the inner side surface of the cylindrical electrode holder main body, and includes a holder that comes into contact with the outer side surface of the electrode to hold the electrode inserted through the inner side of the electrode holder main body,
The electrode holder according to claim 1, wherein the holder has a spherical shape and is rotatably assembled to the electrode holder body. 前記保持具は、絶縁材にて構成されていることを特徴とする請求項１に記載の電極ホルダ。   The electrode holder according to claim 1, wherein the holder is made of an insulating material. 前記保持具は、前記電極の周方向所定間隔に複数配列され、前記電極の軸方向の離間した位置に少なくとも２列以上配置されていることを特徴とする請求項１または請求項２に記載の電極ホルダ。   The plurality of the holders are arranged at predetermined intervals in the circumferential direction of the electrodes, and are arranged in at least two rows at positions spaced apart in the axial direction of the electrodes. Electrode holder. 前記電極ホルダ本体には、前記保持具を収容するための収容孔が径方向に貫通形成されるとともに前記収容孔の径方向内側開口から前記保持具の抜け出しが不能となるような開口形状に形成され、前記収容孔に収容状態の前記保持具に当接するような嵌め入れ部材の嵌入にて前記保持具が組み付けられていることを特徴とする請求項１から請求項３のいずれか一項に記載の電極ホルダ。   In the electrode holder body, an accommodation hole for accommodating the holder is formed so as to penetrate in the radial direction, and an opening shape is formed so that the holder cannot be removed from the radially inner opening of the accommodation hole. 4. The holder according to claim 1, wherein the holder is assembled by fitting a fitting member that comes into contact with the holder in the accommodated state in the accommodation hole. 5. The electrode holder as described. 前記電極ホルダが溶融炉に組み付けられている状態において、
前記保持具は、前記電極ホルダの前記溶融炉側の端部に設けられていることを特徴とする請求項１から請求項４のいずれか一項に記載の電極ホルダ。 In the state where the electrode holder is assembled in the melting furnace,
The said holder is provided in the edge part by the side of the said melting furnace of the said electrode holder, The electrode holder as described in any one of Claims 1-4 characterized by the above-mentioned. 請求項１から請求項５のいずれか一項に記載の電極ホルダに前記電極が挿通されて保持されていることを特徴とする電極ユニット。   An electrode unit, wherein the electrode is inserted and held in the electrode holder according to any one of claims 1 to 5.
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05237662A (en) * 1992-03-03 1993-09-17 Babcock Hitachi Kk Welding torch
JP2001013193A (en) * 1999-06-30 2001-01-19 Yazaki Corp Connector electric continuity checking tool
JP2011136359A (en) * 2009-12-28 2011-07-14 Kawasaki Heavy Ind Ltd Holder for automatically exchanging welding rod-like electrode
JP2012229153A (en) * 2011-04-26 2012-11-22 Corning Inc Electrode holder for electric glass melting
CN204771101U (en) * 2015-06-10 2015-11-18 苏州市邦成电子科技有限公司 Improved generation spot welder

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05237662A (en) * 1992-03-03 1993-09-17 Babcock Hitachi Kk Welding torch
JP2001013193A (en) * 1999-06-30 2001-01-19 Yazaki Corp Connector electric continuity checking tool
JP2011136359A (en) * 2009-12-28 2011-07-14 Kawasaki Heavy Ind Ltd Holder for automatically exchanging welding rod-like electrode
JP2012229153A (en) * 2011-04-26 2012-11-22 Corning Inc Electrode holder for electric glass melting
CN204771101U (en) * 2015-06-10 2015-11-18 苏州市邦成电子科技有限公司 Improved generation spot welder

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