JPH0242390Y2 - - Google Patents
Info
- Publication number
- JPH0242390Y2 JPH0242390Y2 JP1348283U JP1348283U JPH0242390Y2 JP H0242390 Y2 JPH0242390 Y2 JP H0242390Y2 JP 1348283 U JP1348283 U JP 1348283U JP 1348283 U JP1348283 U JP 1348283U JP H0242390 Y2 JPH0242390 Y2 JP H0242390Y2
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- insulator
- torch body
- torch
- integrally molded
- 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
Links
- 239000012212 insulator Substances 0.000 claims description 51
- 238000003466 welding Methods 0.000 claims description 18
- 239000012778 molding material Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 description 18
- 238000000465 moulding Methods 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
Landscapes
- Arc Welding In General (AREA)
Description
【考案の詳細な説明】
技術分野
本考案は、トーチ本体の一端部に絶縁物を介し
て筒状のノズルを着脱自在に配設してなる溶接用
トーチに関するものである。[Detailed Description of the Invention] Technical Field The present invention relates to a welding torch having a cylindrical nozzle removably disposed at one end of the torch body via an insulator.
従来技術
従来、この種の溶接用トーチにおいては、第１
図および第２図に示される構造のものが用いられ
ていた。即ち金属よりなるトーチ本体１の一端部
にねじを螺設し、このねじに螺合する絶縁物２′
と金属製の筒状のノズル３′とを着脱自在に螺着
させていた。この場合、ノズル３′の着脱に伴な
う絶縁物２′のねじの損傷を防ぐために、第２図
に示されるごとく、絶縁物２′に金属物３１を挿
入し、接着あるいは焼きばめなどの方法により金
属物３１を絶縁物２′に固定したものが多用され
ていた。ところでノズル３′はいわゆる消耗品で
あつて溶接途上で適宜に新らしいノズル３′と取
替えられる。しかしこの消耗品である金属製のノ
ズル３′にはネジを施さなければならないためコ
スト高となつていた。またノズル３′は溶接時に
使用されるシールド用ガスを溶接部に案内するた
めに用いられるが、上記従来のごとく２ケ所のネ
ジを介してノズル３′がトーチ本体１に螺着され
ていれば、２ケ所のネジのガタ分だけノズル３′
の位置が変位してノズル３′と給電用部材４とが
偏心した状態となる。この場合、給電用部材４に
対してノズル３′が偏心した方向のガス通路が広
くなるため、シールド用ガスは擾乱されて乱流と
なり、溶接部に外気が混入した溶接欠陥を生起さ
せていた。また、一般に溶接時にはノズル３′お
よび絶縁物２′が高温のアーク熱にさらされる。
このため第２図に示されるごとく、金属物３１と
絶縁物２′とが接着されている場合には接着剤が
蒸発して金属物３１が絶縁物２′から抜け落ちる
ことがあつた。さらにまた金属物３１と絶縁物
２′とが焼きばめされている場合には、金属物３
１と絶縁物２′との熱膨張係数の差異により金属
物３１が絶縁物２′より抜け落ちることがあつた。
これに対処するために焼きばめを強固に行なうと
絶縁物２′を破損させる虞れがあつた。また、第
２図に示されるごとく絶縁物２′と金属物３１と
を接着などにより固定したものを用いる場合、適
宜に新しいノズル３′と古いノズルとを取替えて
いるうちに、絶縁物２′のネジ山や絶縁物２′自体
が序々に損傷して、突発的に絶縁物が使用し得な
くなることがあつた。この場合、金属物３１を装
填した新らしい絶縁物２′を入手する迄溶接作業
を中断せざるを得なかつた。勿論、この種の絶縁
物２′を予備として工具箱などにストツクしてお
くことが考えられるが、予備の絶縁物２′の取替
え周期が比較的長いので予備の絶縁物２′を紛失
したりしていざという時に用いることができなか
つた。Prior Art Conventionally, in this type of welding torch, the first
The structure shown in the figure and FIG. 2 was used. That is, a screw is screwed into one end of the torch body 1 made of metal, and the insulator 2' is screwed onto this screw.
and a metal cylindrical nozzle 3' are removably screwed together. In this case, in order to prevent damage to the screws of the insulator 2' due to the attachment and detachment of the nozzle 3', a metal object 31 is inserted into the insulator 2' and bonded or shrink-fitted, as shown in FIG. A method in which a metal object 31 is fixed to an insulator 2' is often used. By the way, the nozzle 3' is a so-called consumable item and is replaced with a new nozzle 3' as needed during welding. However, the metal nozzle 3', which is a consumable item, must be screwed, resulting in high cost. Further, the nozzle 3' is used to guide the shielding gas used during welding to the welding part, but if the nozzle 3' is screwed to the torch body 1 through two screws as in the conventional case, , nozzle 3' by the amount of play in the two screws.
is displaced, and the nozzle 3' and the power feeding member 4 become eccentric. In this case, since the gas passage in the direction in which the nozzle 3' is eccentric with respect to the power supply member 4 becomes wider, the shielding gas is disturbed and becomes a turbulent flow, causing a welding defect where outside air gets mixed into the welded part. . Furthermore, during welding, the nozzle 3' and the insulator 2' are generally exposed to high temperature arc heat.
For this reason, as shown in FIG. 2, when the metal object 31 and the insulator 2' are bonded together, the adhesive evaporates and the metal object 31 sometimes falls off the insulator 2'. Furthermore, when the metal object 31 and the insulator 2' are shrink-fitted, the metal object 31
Due to the difference in thermal expansion coefficient between the metal object 1 and the insulator 2', the metal object 31 sometimes fell off from the insulator 2'.
If a strong shrink fit was performed to deal with this problem, there was a risk that the insulator 2' would be damaged. In addition, when using an insulator 2' and a metal object 31 fixed by adhesive or the like as shown in FIG. 2, while replacing a new nozzle 3' with an old nozzle as appropriate, The screw threads and the insulator 2' itself were gradually damaged, and the insulator suddenly became unusable. In this case, the welding work had to be interrupted until a new insulator 2' loaded with the metal object 31 was obtained. Of course, it is conceivable to keep this type of insulator 2' as a spare in a tool box, etc., but since the replacement cycle of the spare insulator 2' is relatively long, there is no risk of losing the spare insulator 2'. I couldn't use it in an emergency.
考案の目的
本考案はかかる問題に鑑みてなされたものであ
つて、トーチ本体と筒状のノズルとの係合部を１
ケ所とすることにより、ノズルを所定位置に臨ま
せて良好な溶接部を得ることができ、しかし消耗
品である金属製のノズルの加工工数を低減した安
価な溶接用トーチであつて、トーチ本体とノズル
との着脱が確実に行なわれる溶接用トーチを提供
することを目的としている。Purpose of the invention The present invention has been made in view of the above problem, and is designed to reduce the number of engagement parts between the torch body and the cylindrical nozzle.
This is an inexpensive welding torch that allows the nozzle to face the predetermined position and obtain a good welded joint, but also reduces the number of man-hours required for machining the metal nozzle, which is a consumable item. An object of the present invention is to provide a welding torch that can be reliably attached to and detached from a nozzle and a nozzle.
実施例
以下、図示の実施例を参照して本考案を詳細に
説明する。Embodiments Hereinafter, the present invention will be described in detail with reference to illustrated embodiments.
第３図において、１は金属製のトーチ本体、２
はシリコン樹脂や四フツ化エチレン樹脂などの成
形用材料よりなる絶縁物、３は金属製の筒状のノ
ズルで、このノズル３と絶縁物２とは一体成形さ
れるが、成形に先だつて、ノズル３には例えば
X1方向の内部に筒状の段部３０１が形成され、
かつ絶縁物２をＸ方向と回転方向とに対して位置
決めするための係合部３０２、図示の場合半径方
向に貫通する合計４個の丸孔が配設される。この
ノズル３が成形用材料よりなる絶縁物２と図示の
ごとく一体的に成形される。なお絶縁物２にはト
ーチ本体への係合部２０１、図示の場合雌ネジが
配設されている。成形後のノズル３は絶縁物２と
一体となつてトーチ本体１に着脱自在に配設され
る。４は給電用部材、例えば消耗性ワイヤを用い
る場合には、いわゆる給電用チツプである。５は
トーチ本体１を電気的に被覆する絶縁外被で、図
示のごとく絶縁外被５のX2方向の端部が絶縁物
２に覆われていれば絶縁が確実に行なわれる。消
耗性ワイヤを用いる場合には、トーチ本体１の略
軸芯部にワイヤガイド６を設けた方が好ましい。 In Fig. 3, 1 is a metal torch body, 2
is an insulator made of a molding material such as silicone resin or tetrafluoroethylene resin; 3 is a metal cylindrical nozzle; the nozzle 3 and the insulator 2 are integrally molded; however, prior to molding, For example, in nozzle 3
A cylindrical stepped portion 301 is formed inside in the X1 direction,
In addition, an engaging portion 302 for positioning the insulator 2 in the X direction and the rotational direction is provided, and in the illustrated case, a total of four round holes penetrating in the radial direction are provided. This nozzle 3 is integrally molded with an insulator 2 made of a molding material as shown in the figure. Note that the insulator 2 is provided with an engaging portion 201 for engaging the torch body, and in the illustrated case, a female thread. After molding, the nozzle 3 is integrated with the insulator 2 and is detachably attached to the torch body 1. Reference numeral 4 denotes a power feeding member, for example, a so-called power feeding chip when a consumable wire is used. Reference numeral 5 denotes an insulating jacket that electrically covers the torch body 1. If the ends of the insulating jacket 5 in the X2 direction are covered with the insulating material 2 as shown, insulation can be ensured. When using a consumable wire, it is preferable to provide the wire guide 6 approximately at the axial center of the torch body 1.
なお絶縁物２に配設されるトーチ本体への係合
部２０１、図示の場合雌ネジは成形後に螺設する
こともできるが、雌ネジを成形により配設すれば
より安価に製作することができて有利である。 Note that the engaging portion 201 for the torch body disposed on the insulator 2, in the case shown in the figure, the female thread can be screwed after molding, but it can be manufactured at a lower cost if the female screw is provided by molding. It is advantageous to be able to do so.
第４図は本考案の他の実施例を示す図であつ
て、ノズル３には絶縁物２を位置決めするための
係合部３０２が円周方向の適宜の長さの略矩形状
の貫通孔または溝として配設されている。また絶
縁物２にはトーチ本体への係合部２０１として筒
状部が形成され、この筒状の係合部２０１がトー
チ本体１のX2方向の端部に挿入されて、“Ｏ”リ
ングや割形スプリングなどの弾性具７によりノズ
ル３が弾性的に着脱自在に配設される。 FIG. 4 is a diagram showing another embodiment of the present invention, in which the nozzle 3 has a substantially rectangular through hole of an appropriate length in the circumferential direction for positioning the insulator 2. Or arranged as a groove. In addition, a cylindrical part is formed in the insulator 2 as an engaging part 201 to the torch body, and this cylindrical engaging part 201 is inserted into the end of the torch body 1 in the X2 direction, and the "O" ring The nozzle 3 is elastically attached and detached by an elastic member 7 such as a split spring or the like.
なお一体成形されるノズルと絶縁物とが略同一
の外径に形成されるものとすれば、成形を容易に
行なうことができる。このようにノズルと絶縁物
とを一体成形したものを消耗品とすれば、従来は
金属製のノズルにネジを螺設する必要があつたが
このネジ切り作業が不要になり安価に製作するこ
とができる。また一体成形されたノズルはトーチ
本体と単一の係合部を介して配設されるため、ノ
ズルを所定の位置に配設することができ、従つて
シールドガスを層流状に維持しつつ良好な溶接部
を確実に得ることができる。さらにまたノズルと
絶縁物とは係合部により相互に係合されて一体成
形されているため、一体成形されたノズルが高温
のアーク熱にさらされてもノズルと絶縁物とが離
脱する虞れはなく、従つて一体成形されたノズル
がトーチ本体より離脱することはない。さらに一
体成形されたノズルを消耗品とするため、従来比
較的長い周期で部品が損傷していたという事態は
皆無となり従つて溶接を中断することなく作業を
行なうことができる。 Note that if the nozzle and the insulator that are integrally molded are formed to have approximately the same outer diameter, molding can be easily performed. If the nozzle and insulator are integrally molded in this way and made into a consumable item, conventionally it was necessary to screw a screw into the metal nozzle, but this thread-cutting work is no longer necessary and the product can be manufactured at a low cost. Can be done. Additionally, since the integrally molded nozzle is disposed through a single engagement part with the torch body, the nozzle can be positioned in a predetermined position, thus maintaining a laminar flow of the shielding gas. A good welded part can be obtained reliably. Furthermore, since the nozzle and the insulator are integrally molded and are engaged with each other by the engaging portion, there is a risk that the nozzle and the insulator will separate even if the integrally molded nozzle is exposed to high-temperature arc heat. Therefore, the integrally molded nozzle will not separate from the torch body. Furthermore, since the integrally molded nozzle is a consumable item, there is no longer a problem where parts are damaged over a relatively long cycle, and welding can be carried out without interruption.
上記説明のごとく、一体成形される絶縁物の内
方にトーチ本体への係合部を配設すれば、補修用
部品として保管される一体成形されたノズルの係
合部に外力が作用することが殆んどないため、一
体成形されたものの絶縁物の係合部を損傷するこ
となく保管することができる。これにも拘わら
ず、一体成形されたものの絶縁物の外方にトーチ
本体への係合部を配設することができる。また、
第３図に示されるごとく、ノズルと絶縁物との係
合部としてノズルの半径方向に貫通する孔を穿設
すれば孔加工を容易に行なうことができる。勿
論、貫通孔は１以上任意数であればよい。さら
に、第４図に示されるごとく、ノズルと絶縁物と
の係合部として円周方向の適宜の長さの略矩形状
の貫通孔または溝を配設すれば、ノズルと絶縁物
との係合がより強固に行なわれる。勿論、本考案
に係る溶接用トーチとしては非消耗性電極を用い
るものやいわゆるサイドシールド形のものに適用
することができる。 As explained above, if the engaging part for the torch body is arranged inside the integrally molded insulator, external force will not act on the engaging part of the integrally molded nozzle that is stored as a repair part. Since there is almost no damage, it is possible to store the integrally molded product without damaging the engaging portion of the insulator. Despite this, it is possible to arrange the engagement portion for the torch body on the outside of the integrally molded insulator. Also,
As shown in FIG. 3, if a hole is bored through the nozzle in the radial direction as an engagement portion between the nozzle and the insulator, the hole machining can be easily performed. Of course, the number of through holes may be any number greater than or equal to one. Furthermore, as shown in FIG. 4, if a substantially rectangular through hole or groove of an appropriate length in the circumferential direction is provided as the engagement part between the nozzle and the insulator, the engagement between the nozzle and the insulator can be improved. The combination will be stronger. Of course, the welding torch according to the present invention can be applied to a welding torch using a non-consumable electrode or a so-called side shield type welding torch.
また一般に筒状のガスノズルの内周面に亘つて
長手方向もしくは螺旋状に隔壁を設けて、シール
ドガスの層流化を計つているが、本考案において
は、ノズルと絶縁物とを一体に成形するから、絶
縁物のX2方向の内周面の全周に亘つて上記隔壁
を成形により容易に配設することができる。この
場合、絶縁物のX2方向への筒状部は長い程シー
ルドガスの層流化を計れることは勿論である。 Generally, a partition wall is provided in the longitudinal direction or in a spiral shape over the inner peripheral surface of a cylindrical gas nozzle in order to create a laminar flow of the shielding gas, but in the present invention, the nozzle and the insulator are integrally molded. Therefore, the partition wall can be easily provided by molding over the entire circumference of the inner peripheral surface of the insulator in the X2 direction. In this case, it goes without saying that the longer the cylindrical part of the insulator in the X2 direction, the more laminar the shielding gas can be.
考案の効果
上記実施例に詳記した如く、本考案は、ノズル
と絶縁物とを一体的に成形したのでノズルとトー
チ本体との係合部を１ケ所とすることにより、ノ
ズルを所定位置に臨ませて層流状のシールドガス
の噴流を得ることができ、従つて良好な溶接部を
得ることができる。また従来のごとく金属製のノ
ズルにネジ加工を施す必要がないため、消耗品で
ある一体成形したノズルを安価に製作することが
でき、しかもノズルと絶縁物とは係合部により相
互に係合されて一体成形されているため、一体成
形されたノズルが高温のアーク熱にさらされても
ノズルと絶縁物とが離脱することはなく、従つて
トーチ本体とノズルとの着脱が確実に行なわれ
る。Effects of the invention As described in detail in the above embodiment, the present invention has the nozzle and the insulator integrally molded, so that the nozzle and the torch body have only one engagement part, so that the nozzle can be held in a predetermined position. It is possible to obtain a laminar jet of shielding gas directly in front of the weld, and therefore to obtain a good weld. In addition, since there is no need to thread the metal nozzle as in the past, it is possible to manufacture an integrally molded nozzle, which is a consumable item, at low cost, and the nozzle and the insulator are engaged with each other through the engagement part. Since the nozzle and the insulator will not separate even if the integrally molded nozzle is exposed to high-temperature arc heat, the torch body and nozzle can be reliably attached and detached. .
第１図は従来例を示す上半部を断面にした要部
側面図、第２図は第１図の要部変形例を示す上半
部を断面にした側面図、第３図は本考案の実施例
を示す上半部を断面にした要部側面図、第４図は
本考案の他の実施例を示す上半部を断面にした要
部側面図である。
１……トーチ本体、２……成形材料よりなる絶
縁物、３……ノズル。
Figure 1 is a cross-sectional side view of the upper half of a conventional example, Figure 2 is a cross-sectional side view of the upper half of a modification of Figure 1, and Figure 3 is a cross-sectional side view of the upper half of the present invention. FIG. 4 is a side view of the main parts, with the upper half sectioned, showing another embodiment of the present invention. 1... Torch body, 2... Insulator made of molding material, 3... Nozzle.
Claims (1)
ノズルを着脱自在に配設してなる溶接用トーチ
において、前記ノズルに半径方向および長軸方
向の係合部を配設し、該ノズルと成形用材料よ
りなる絶縁物とを前記係合部を介して一体とな
るよう成形し、かつ前記絶縁物にトーチ本体へ
の係合部を配設してなる溶接用トーチ。 ２ 前記一体となるよう成形されるノズルと絶縁
物とは略同一の外径に形成されてなる実用新案
登録請求の範囲第１項に記載の溶接用トーチ。 ３ 前記絶縁物に配設されるトーチ本体への係合
部はネジである実用新案登録請求の範囲第１項
又は第２項に記載の溶接用トーチ。 ４ 前記絶縁物に配設されるトーチ本体への係合
部は筒状部である実用新案登録請求の範囲第１
項又は第２項に記載の溶接用トーチ。[Claims for Utility Model Registration] 1. A welding torch comprising a cylindrical nozzle removably disposed at one end of the torch body via an insulator, which engages the nozzle in the radial and longitudinal directions. the nozzle and an insulator made of a molding material are molded into one body via the engagement part, and the insulator is provided with an engagement part for the torch body. Welding torch. 2. The welding torch according to claim 1, wherein the nozzle and the insulator that are integrally formed have substantially the same outer diameter. 3. The welding torch according to claim 1 or 2, wherein the engaging portion disposed on the insulator and engaging the torch body is a screw. 4. Utility model registration claim 1, wherein the engaging portion of the insulator that engages with the torch body is a cylindrical portion.
The welding torch according to item 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1348283U JPS59120075U (en) | 1983-01-31 | 1983-01-31 | welding torch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1348283U JPS59120075U (en) | 1983-01-31 | 1983-01-31 | welding torch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59120075U JPS59120075U (en) | 1984-08-13 |
| JPH0242390Y2 true JPH0242390Y2 (en) | 1990-11-13 |
Family
ID=30144863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1348283U Granted JPS59120075U (en) | 1983-01-31 | 1983-01-31 | welding torch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59120075U (en) |
-
1983
- 1983-01-31 JP JP1348283U patent/JPS59120075U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59120075U (en) | 1984-08-13 |
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