JP2968880B2 - Method of welding connection between lead pin penetration plug and electric bridge element - Google Patents
Method of welding connection between lead pin penetration plug and electric bridge elementInfo
- Publication number
- JP2968880B2 JP2968880B2 JP35698091A JP35698091A JP2968880B2 JP 2968880 B2 JP2968880 B2 JP 2968880B2 JP 35698091 A JP35698091 A JP 35698091A JP 35698091 A JP35698091 A JP 35698091A JP 2968880 B2 JP2968880 B2 JP 2968880B2
- Authority
- JP
- Japan
- Prior art keywords
- lead pin
- bridge element
- plug
- electric bridge
- welding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000003466 welding Methods 0.000 title claims description 32
- 238000000034 method Methods 0.000 title claims description 8
- 230000035515 penetration Effects 0.000 title claims description 5
- 208000005189 Embolism Diseases 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000037452 priming Effects 0.000 description 4
- 230000008646 thermal stress Effects 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 3
- 239000005394 sealing glass Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 230000003073 embolic effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Air Bags (AREA)
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明はリ−ドピン貫通栓と電橋
エレメントとを溶接接合する方法に関し、電気雷管点火
部の塞栓のリ−ドピン先端間に電橋エレメントを橋設す
る場合に有用なものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for welding a lead pin penetration plug and a bridge element by welding, and is useful when a bridge element is bridged between the tip of a lead pin of an embolus of an electric detonator ignition part. It is something.
【０００２】[0002]
【従来の技術】電気雷管においては、絶縁性栓体に一対
のリ−ドピンを貫設した塞栓のリ−ドピン先端間に電橋
エレメントを溶接により橋設したものを点火部材として
使用しており、一端開口の金属筒体内に奥方から順次に
添装薬、起爆薬、点火薬を装填し、該筒体の一端開口に
上記の電橋エレメント付き塞栓を取着し、電橋エレメン
トを点火薬に接触させると共に当該塞栓で筒体の一端開
口を封止することによって電気雷管を構成している。2. Description of the Related Art An electric detonator uses, as an ignition member, an electric plug element in which an electric bridge element is bridged by welding between the tip of a lead pin of an embolus having a pair of lead pins penetrating an insulating plug. The charging agent, the priming agent, and the igniting agent are sequentially loaded from the back into the metal cylinder body having one end opening, and the plug with the electric bridge element is attached to one end opening of the cylindrical body, and the electric bridge element is connected with the igniting agent. , And an end of the cylinder is sealed with the plug to form an electric detonator.
【０００３】上記の電気雷管においては、塞栓とリ−ド
ピンとの間の気密固定性が不良であると、吸湿による点
火薬の点火性低下が招来されたり、リ−ドピンの移動に
よるリ−ドピンと点火薬との摩擦のために点火薬が不測
的に着火して暴発に至ったり、或いは、点火発火時、リ
−ドピンが抜脱して爆破圧力が漏れ、筒体底部を破壊さ
せ得ず本来の爆破を遂行させ得ないなど、重大な支障が
惹起される。In the above electric detonator, if the hermetic fixation between the embolus and the lead pin is poor, the ignitability of the igniter is reduced by moisture absorption, or the lead pin is moved by the movement of the lead pin. Unexpected ignition of the priming due to friction between the priming and the priming leads to explosion, or at the time of ignition ignition, the lead pin comes off and the blast pressure leaks, and the bottom of the cylinder cannot be destroyed. Serious obstacles, such as the inability to carry out the blasting.
【０００４】上記電橋エレメントをリ−ドピンに接合す
るには、従来、図３に示すようにリ−ドピン２’の先端
端面２０’に電橋エレメント５’を位置決めし、そのリ
−ドピン先端端面箇所２０’の電橋エレメント部分５
０’とリ−ドピン後端端面２０”とに抵抗溶接機の各電
極６１’，６２’を当接し、これら電極６１’，６２’
を通じて溶接電流を通電している。In order to join the above-mentioned bridge element to a lead pin, conventionally, as shown in FIG. 3, a bridge element 5 'is positioned on a tip end face 20' of a lead pin 2 ', and the tip of the lead pin is formed. Electric bridge element part 5 at end face location 20 '
The electrodes 61 'and 62' of the resistance welding machine are brought into contact with 0 'and the rear end face 20 "of the lead pin, and these electrodes 61' and 62 '.
The welding current is passed through.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上記の
接合方法ではリ−ドピン全体に溶接電流が流れ、リ−ド
ピン全体がジュ−ル発熱により相当高温になるので、リ
−ドピンと栓体との界面に両者の熱膨張係数の差のため
に熱ストレスが発生し、界面剥離が生じてリ−ドピンの
栓体に対する充分な気密固定性を確保し難い。However, in the above joining method, a welding current flows through the entire lead pin, and the entire lead pin becomes considerably high due to the heat generated by the joule. Thermal stress is generated at the interface due to the difference in thermal expansion coefficient between the two, and the interface is peeled off, making it difficult to secure sufficient airtight fixing of the lead pin to the plug.
【０００６】本発明の目的はリ−ドピンを貫設した栓体
のリ−ドピンの先端間に電橋エレメントを抵抗溶接法に
より接合する場合、リ−ドピンと栓体との間の気密固定
性を良好に保持してこの接合を可能とするリ−ドピン貫
通栓と電橋エレメントとを溶接接合する方法を提供する
ことにある。It is an object of the present invention to provide an airtight fixation between a lead pin and a plug when an electric bridge element is joined by a resistance welding method between tips of the lead pins of the plug having the lead pin passed therethrough. It is an object of the present invention to provide a method for welding and joining a lead pin penetration plug and an electric bridge element, which makes it possible to carry out this joining while holding the wire well.
【０００７】[0007]
【課題を解決するための手段】本発明のリ−ドピン貫通
栓と電橋エレメントとを溶接接合する方法は、リ−ドピ
ンを貫設した栓体のそのリ−ドピン先端部外面に電橋エ
レメント端部を位置させ、抵抗溶接機の一方の電極をリ
−ドピン先端部外面に接触した電橋エレメント箇所に当
接し、他方の電極を前記電橋エレメント箇所以外のリ−
ドピン先端部外面に直接当接し、これらの両電極を通じ
て溶接電流を通電しリ−ドピンと電橋エレメントとを溶
接することを特徴とする構成である。SUMMARY OF THE INVENTION According to the present invention, there is provided a method for welding a lead pin penetrating plug to an electric bridge element by welding the electric bridge element to an outer surface of a lead pin penetrating plug body. With the end positioned, one electrode of the resistance welding machine is brought into contact with the bridge element location in contact with the outer surface of the lead pin tip, and the other electrode is connected to a lead other than the bridge element location.
The structure is characterized in that the lead pin and the bridge element are directly contacted with the outer surface of the tip of the doping pin, and a welding current is applied through these two electrodes to weld the lead pin and the bridge element.
【０００８】[0008]
【作用】リ−ドピンでの溶接電流の経路が電橋エレメン
トに接触するリ−ドピン先端部箇所からこの箇所とは別
箇所のリ−ドピン先端部箇所との間であり、栓体に接触
するリ−ドピン部分には溶接電流が流れないので、溶接
時、リ−ドピンと栓体との間の界面での熱ストレスの発
生をよく排除でき、その界面の剥離を良好に防止でき
る。The path of the welding current at the lead pin is between the lead pin tip where it contacts the electric bridge element and a lead pin tip that is different from this point, and contacts the plug. Since the welding current does not flow through the lead pin portion, the occurrence of thermal stress at the interface between the lead pin and the plug during welding can be eliminated well, and the separation at the interface can be prevented well.
【０００９】[0009]
【実施例】以下、図面により本発明の実施例を説明す
る。図１は電気雷管の点火部材として使用される塞栓を
示し、絶縁性栓体１、例えばセラミックス製栓体の孔１
１，１１にリ−ドピン２，２を挿入し、そのリ−ドピン
２の先端端面と栓体１の前面とをほぼ面一にし、栓体１
に金属製内筒３を嵌着し、この内筒３内に封着ガラス４
を装填してある。５はリ−ドピン２，２の先端端面に溶
接により接合した電橋エレメントである。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embolus used as an ignition member of an electric detonator, and an insulating plug 1, for example, a hole 1 of a ceramic plug.
The lead pins 2 and 2 are inserted into the plugs 1 and 11, and the front end surface of the lead pin 2 and the front surface of the plug 1 are substantially flush with each other.
A metal inner cylinder 3 is fitted into the inner cylinder 3, and a sealing glass 4
Is loaded. Reference numeral 5 denotes an electric bridge element joined to the end faces of the lead pins 2 and 2 by welding.
【００１０】図２の（ロ）に示されているように、リ−
ドピン２断面の横幅ａは電橋エレメント５の直径ｂより
もやや広くされ、リ−ドピン２断面の縦幅ｃは横幅ａの
２〜４倍としてある。[0010] As shown in FIG.
The width a of the cross section of the doping 2 is slightly larger than the diameter b of the bridge element 5, and the length c of the cross section of the lead pin 2 is 2 to 4 times the width a.
【００１１】上記栓体１の半径は通常４．０ｍｍ〜６．
０ｍｍであり、リ−ドピン２には幅１．０ｍｍ〜１．４
ｍｍの断面長方形のニッケル鉄合金を使用でき、電橋エ
レメント５には半径２５μｍのニッケルクロム電熱線を
使用できる。The radius of the plug 1 is usually 4.0 mm to 6.0 mm.
0 mm, and the lead pin 2 has a width of 1.0 mm to 1.4 mm.
For example, a nickel-iron heating wire having a radius of 25 μm can be used for the bridge element 5.
【００１２】本発明によって上記塞栓のリ−ドピン２，
２の先端間に電橋エレメント５を溶接により接合するに
は、リ−ドピン２，２の先端面間に跨って電橋エレメン
ト５を配置し、図２の（イ）並びに（ロ）（図２の
（イ）における平面図）に示すように、リ−ドピン先端
面に接触する電橋エレメント部分５０に抵抗溶接機の一
方のスポット溶接用電極６１を当接し、他方の電極６２
をリ−ドピン先端端面２０に直接当接し、これらの電極
６１，６２を通じて溶接電流を通電する。According to the present invention, the embolic lead pin 2,
In order to join the electric bridge element 5 between the tips of the lead wires 2 by welding, the electric bridge element 5 is disposed so as to straddle between the end faces of the lead pins 2 and 2, and FIGS. As shown in FIG. 2 (a), one spot welding electrode 61 of the resistance welding machine is brought into contact with the bridge element portion 50 in contact with the lead pin tip surface, and the other electrode 62.
Is brought into direct contact with the lead pin tip end face 20, and a welding current is supplied through these electrodes 61 and 62.
【００１３】上記において溶接電流の経路は図２の
（イ）の矢印で示す通りであり、この通電路における電
橋エレメント材並びにリ−ドピン材が溶融されて電橋エ
レメント箇所５０のリ−ドピン先端２０への溶着が行わ
れる。In the above description, the path of the welding current is as shown by the arrow in FIG. 2 (A), and the electric bridge element material and the lead pin material in this current path are melted and the lead pin at the electric bridge element location 50 is melted. Welding to the tip 20 is performed.
【００１４】而して、溶接電流により加熱されるリ−ド
ピン部分はリ−ドピン２の極く先端部に限られ、リ−ド
ピン２の大部分が加熱されず、リ−ドピン２と栓体１並
びに封着ガラス４との間の界面のほぼ全体を溶接熱に曝
さなくてもすむから、リ−ドピン２と栓体１並びに封着
ガラス４との間の界面での熱ストレスの発生を排除して
この界面の固定気密性を安定に維持できる。The lead pin heated by the welding current is limited to the very tip of the lead pin 2. Most of the lead pin 2 is not heated, and the lead pin 2 and the plug are not heated. Since it is not necessary to expose the entire interface between the lead pin 2 and the sealing glass 4 to the welding heat, the generation of thermal stress at the interface between the lead pin 2 and the plug 1 and the sealing glass 4 is reduced. By excluding it, the fixed airtightness of this interface can be stably maintained.
【００１５】上記において他方のリ−ドピンの先端端面
と電橋エレメントとの溶接接合も上記と同様にして行な
われる。In the above, the welding connection between the tip end face of the other lead pin and the electric bridge element is performed in the same manner as described above.
【００１６】[0016]
【発明の効果】本発明のリ−ドピン貫通栓と電橋エレメ
ントとを溶接接合する方法によれば、上述した通りリ−
ドピンと栓体との間の界面に熱ストレスを作用させるこ
となく、リ−ドピンの先端間に電橋エレメントを抵抗溶
接により溶接接合でき、リ−ドピンと栓体との間の気密
固定性を当初のままによく保持できる。According to the method of welding the lead pin penetration plug and the electric bridge element of the present invention by welding, as described above,
Without applying thermal stress to the interface between the dopin and the plug, the bridge element can be welded to the tip of the leadpin by resistance welding, and the hermetic fixation between the lead pin and the plug can be improved. Can be kept well as originally.
【００１７】従って、リ−ドピンと栓体との間からの吸
湿による点火薬の点火性低下、リ−ドピンの移動による
リ−ドピンと点火薬との摩擦に起因する点火薬が不測の
着火・暴発、或いは、点火発火時、リ−ドピンの抜脱に
よる爆破圧力の漏れに起因する爆破不良等を確実に排除
して安全作動の電気雷管を製造できる。Therefore, the ignition characteristics of the igniter decrease due to moisture absorption from between the lead pin and the plug, and the igniter is unexpectedly ignited due to friction between the lead pin and the igniter due to the movement of the lead pin. An electric detonator with a safe operation can be manufactured by reliably eliminating blasting failure or the like caused by a blast pressure leak due to a lead pin withdrawal during explosion or ignition.
【図１】電気雷管の点火部材を示す断面図である。FIG. 1 is a sectional view showing an ignition member of an electric detonator.
【図２】図２の（イ）は本発明の実施例を示す断面説明
図、図２の（ロ）は同じく平面説明図である。FIG. 2A is a cross-sectional explanatory view showing an embodiment of the present invention, and FIG. 2B is a plan explanatory view of the same.
【図３】従来例を示す断面説明図である。FIG. 3 is an explanatory sectional view showing a conventional example.
１ 栓体 ２ リ−ドピン ２０ リ−ドピン端部外面 ５ 電橋エレメント ５０ リ−ドピン端部外面箇所の電橋エレメント部 ６１ 電極 ６２ 電極 DESCRIPTION OF SYMBOLS 1 Plug body 2 Lead pin 20 Lead pin end outer surface 5 Electric bridge element 50 Electric bridge element part on the outer surface of lead pin end 61 Electrode 62 Electrode
───────────────────────────────────────────────────── フロントページの続き (72)発明者 吉田 信生 兵庫県姫路市豊富町御蔭3353−15 (72)発明者 木村 歩 兵庫県姫路市豊富町御蔭690−１ (58)調査した分野(Int.Cl.6，ＤＢ名) F42B 3/12 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Nobuo Yoshida, Inventor 3353-15 Oinaka, Tomimachi, Himeji City, Hyogo Prefecture (72) Ayumu Kimura, 690-1 Okain, Tomimachi, Himeji City, Hyogo Prefecture (58) .Cl. 6 , DB name) F42B 3/12
Claims (1)
ン先端部外面に電橋エレメント端部を位置させ、抵抗溶
接機の一方の電極をリ−ドピン先端部外面に接触した電
橋エレメント箇所に当接し、他方の電極を前記電橋エレ
メント箇所以外のリ−ドピン先端部外面に直接当接し、
これらの両電極を通じて溶接電流を通電しリ−ドピンと
電橋エレメントとを溶接することを特徴とするリ−ドピ
ン貫通栓と電橋エレメントとを溶接接合する方法。An end of an electric bridge element is located on the outer surface of the leading end of a plug body through which a lead pin is inserted, and one electrode of a resistance welding machine is brought into contact with the outer surface of the leading end of the lead pin. Abuts the bridge element location, and directly contacts the other electrode to the outer surface of the lead pin tip other than the electric bridge element location,
A method for welding a lead pin penetration plug and an electric bridge element, characterized in that a welding current is passed through these two electrodes to weld the lead pin and the electric bridge element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35698091A JP2968880B2 (en) | 1991-12-24 | 1991-12-24 | Method of welding connection between lead pin penetration plug and electric bridge element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35698091A JP2968880B2 (en) | 1991-12-24 | 1991-12-24 | Method of welding connection between lead pin penetration plug and electric bridge element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05172498A JPH05172498A (en) | 1993-07-09 |
| JP2968880B2 true JP2968880B2 (en) | 1999-11-02 |
Family
ID=18451751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35698091A Expired - Fee Related JP2968880B2 (en) | 1991-12-24 | 1991-12-24 | Method of welding connection between lead pin penetration plug and electric bridge element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2968880B2 (en) |
-
1991
- 1991-12-24 JP JP35698091A patent/JP2968880B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05172498A (en) | 1993-07-09 |
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|---|---|---|---|
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Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
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