JPH04294872A - C type welding gun device - Google Patents
C type welding gun deviceInfo
- Publication number
- JPH04294872A JPH04294872A JP3058579A JP5857991A JPH04294872A JP H04294872 A JPH04294872 A JP H04294872A JP 3058579 A JP3058579 A JP 3058579A JP 5857991 A JP5857991 A JP 5857991A JP H04294872 A JPH04294872 A JP H04294872A
- Authority
- JP
- Japan
- Prior art keywords
- gun arm
- fixed
- plate
- terminal
- transformer
- 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.)
- Granted
Links
- 238000003466 welding Methods 0.000 title claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052802 copper Inorganic materials 0.000 claims abstract description 16
- 239000010949 copper Substances 0.000 claims abstract description 16
- 230000000694 effects Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
Landscapes
- Resistance Welding (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、トランスを搭載した直
流式のＣ型溶接ガン装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a DC type C-type welding gun device equipped with a transformer.
【０００２】0002
【従来の技術】この種の溶接ガン装置は、加圧シリンダ
と、加圧シリンダの先方に突出するピストンロッドに取
付けた可動ガンアームと、加圧シリンダ側から可動ガン
アームの先方にのびて該可動ガンアームの先端部に対向
する固定ガンアームと、固定ガンアームの尾端側に設け
たトランスとを備えるを一般としている。かかる溶接ガ
ン装置において、実開平２−１０８５８２号公報により
、トランスの二次コイルのセンタータップを給電用中継
部材とオンス銅板を介して可動ガンアームに接続すると
共に、トランスの二次コイルの両端に連なる対向配置さ
れた１対の端子板間に固定ガンアームの尾端部を該各端
子板との間に夫々整流器を介在させた状態で挿入し、両
端子板をその対向方向両外側に設けた１対の押え板間で
挾圧して、固定ガンアームの尾端部を両端子板間に整流
器を介して挾圧固定し、固定ガンアームに整流器から直
接給電し得るようにしたものは知られている。このもの
で前記中継部材は、固定ガンアームの尾端部と端子板と
の挾圧固定箇所を迂回してその側方に張り出すように設
けられており、該中継部材によりオンス銅板の配設位置
を挾圧固定箇所の側方にオフセットし、オンス銅板が可
動ガンアームに追従して動いても端子板等へのオンス銅
板の接触を生じないようにしている。[Prior Art] This type of welding gun device includes a pressurizing cylinder, a movable gun arm attached to a piston rod that projects forward of the pressurizing cylinder, and a movable gun arm that extends from the pressurizing cylinder side to the forward end of the movable gun arm. Generally, the gun includes a fixed gun arm facing the distal end of the gun, and a transformer provided at the tail end of the fixed gun arm. In such a welding gun device, according to Japanese Utility Model Application Publication No. 2-108582, the center tap of the secondary coil of the transformer is connected to the movable gun arm via a power feeding relay member and an ounce copper plate, and the center tap of the secondary coil of the transformer is connected to both ends of the secondary coil of the transformer. The tail end of a fixed gun arm is inserted between a pair of opposing terminal boards with a rectifier interposed between each terminal board, and both terminal boards are provided on both outer sides in the opposing direction. It is known that the tail end of a fixed gun arm is clamped between a pair of holding plates, and the tail end of a fixed gun arm is clamped and fixed between both terminal plates via a rectifier, so that power can be directly supplied to the fixed gun arm from the rectifier. In this device, the relay member is provided so as to bypass the clamping fixation point between the tail end of the fixed gun arm and the terminal plate and protrude to the side thereof, and the relay member allows the location of the ounce copper plate to be placed. is offset to the side of the clamping pressure fixing point to prevent the ounce copper plate from coming into contact with the terminal board etc. even if the ounce copper plate moves following the movable gun arm.
【０００３】0003
【発明が解決しようとする課題】上記のものでは、中継
部材の長さが長くなって通電ロスが大きくなり、更に中
継部材を設ける関係で部品点数が増す不具合がある。本
発明は、以上の点に鑑み、通電ロスの小さな構造簡単な
Ｃ型溶接ガン装置を提供することをその目的としている
。Problems to be Solved by the Invention In the above-mentioned device, there are problems in that the length of the relay member becomes long, resulting in a large current loss, and the number of parts increases due to the provision of the relay member. In view of the above points, it is an object of the present invention to provide a C-type welding gun device with a simple structure and low current loss.
【０００４】0004
【課題を解決するための手段】上記目的を達成すべく、
本発明では、加圧シリンダと、加圧シリンダの先方に突
出するピストンロッドに取付けた可動ガンアームと、加
圧シリンダ側から可動ガンアームの先方にのびて該可動
ガンアームの先端部に対向する固定ガンアームと、固定
ガンアームの尾端側に設けたトランスとを備えるＣ型溶
接ガン装置であって、トランスの二次コイルのセンター
タップを給電用中継部材とオンス銅板を介して可動ガン
アームに接続すると共に、トランスの二次コイルの両端
に連なる対向配置された１対の端子板間に固定ガンアー
ムの尾端部を該各端子板との間に夫々整流器を介在させ
た状態で挿入し、両端子板をその対向方向両外側に設け
た１対の押え板間で挾圧して、固定ガンアームの尾端部
を両端子板間に整流器を介して挾圧固定するものにおい
て、一方の端子板の外側の押え板を該端子板に対し絶縁
し、該押え板に前記センタータップ端子と前記オンス銅
板とを接続して、該押え板を前記中継部材に構成した。[Means for solving the problem] In order to achieve the above purpose,
The present invention includes a pressurizing cylinder, a movable gun arm attached to a piston rod protruding forward of the pressurizing cylinder, and a fixed gun arm extending from the pressurizing cylinder side to the forward end of the movable gun arm and facing the tip of the movable gun arm. , a C-type welding gun device equipped with a transformer provided on the tail end side of a fixed gun arm, in which the center tap of the secondary coil of the transformer is connected to the movable gun arm via a power supply relay member and an ounce copper plate, and the transformer Insert the tail end of the fixed gun arm between a pair of opposing terminal boards that are connected to both ends of the secondary coil, with a rectifier interposed between each terminal board. In a device in which the tail end of a fixed gun arm is clamped and fixed between a pair of presser plates provided on both outer sides in the opposing direction via a rectifier between both terminal plates, the presser plate on the outside of one terminal plate was insulated from the terminal board, and the center tap terminal and the ounce copper plate were connected to the holding plate, so that the holding plate constituted the relay member.
【０００５】[0005]
【作用】固定ガンアームの尾端部と端子板との挾圧固定
箇所の外側に設けた押え板を給電用中継部材として、こ
れと可動ガンアームとの間にオンス銅板が配線されるた
め、オンス銅板が可動ガンアームに追従して動いても、
オンス銅板の端子板等への接触による短絡を生ずること
はない。又、挾圧固定箇所を迂回してその側方に張り出
す従来のような細長い形状の中継部材を用いるものに比
し、通電ロスが小さくなる。[Operation] The holding plate provided outside the clamping fixation point between the tail end of the fixed gun arm and the terminal board is used as a relay member for power supply, and the ounce copper plate is wired between this and the movable gun arm. Even if it moves following the movable gun arm,
No short circuit will occur due to contact of the ounce copper plate with the terminal board, etc. In addition, current loss is reduced compared to the conventional method using an elongated relay member that bypasses the clamping pressure fixing location and protrudes to the side thereof.
【０００６】ところで、固定ガンアームとトランスとは
加圧シリンダに固定的に支持させる必要があるが、この
場合押え板を加圧シリンダのヘッドカバーに一体的に設
けておけば、前記挾圧固定箇所において固定ガンアーム
とトランスとを押え板を介して加圧シリンダに支持させ
ることができ、固定ガンアーム用やトランス用の別個の
支持ブラケットが不要となり、構造の一層の簡素化を図
れる。By the way, the fixed gun arm and the transformer need to be fixedly supported by the pressure cylinder, but in this case, if the presser plate is integrally provided with the head cover of the pressure cylinder, the clamping force can be fixed at the location mentioned above. The fixed gun arm and the transformer can be supported by the pressurizing cylinder via the holding plate, eliminating the need for separate support brackets for the fixed gun arm and the transformer, further simplifying the structure.
【０００７】[0007]
【実施例】図１を参照して、１は加圧シリンダを示し、
該加圧シリンダ１の先方に突出するピストンロッド１ａ
に絶縁材２を介して可動ガンアーム３を取付けると共に
、該加圧シリンダ１の上側に可動ガンアーム３の先方に
のびて該可動ガンアーム３の先端部に対向する固定ガン
アーム４を設け、両ガンアーム３、４の先端の対向面に
取付けた電極３ａ、４ａ間にワークを挾んで溶接するＣ
型溶接ガンを構成した。固定ガンアーム４の尾端側には
トランス５が設けられており、該トランス５の二次コイ
ル５ａに、図５に示す如く、センタータップ５ｂと、ト
ランス５の幅方向に対向するコイル両端の端子板５ｃ、
５ｃとを一体に形成し、これらセンタータップ５ｂと端
子板５ｃ、５ｃとを図１及び図２に示すようにトランス
５の先端面に突出させた。そして、両端子板５ｃ、５ｃ
間に、図２及び図３に示す如く、固定ガンアーム４の板
状に形成した尾端部４ｂを各端子板５ｃとの間に夫々整
流器６を介在させた状態で挿入し、両端子板５ｃ、５ｃ
をその対向方向両外側に設けた１対の押え板７、７間で
絶縁材８及び皿ばね９を介して挾圧し、両端子板５ｃ、
５ｃ間に整流器６、６を介して固定ガンアーム４の尾端
部４ｂを挾圧固定するようにした。図中１０は押え板７
、７の締付ボルトである。[Example] Referring to FIG. 1, 1 indicates a pressurized cylinder,
A piston rod 1a that projects forward of the pressurizing cylinder 1
A movable gun arm 3 is attached to the pressurizing cylinder 1 via an insulating material 2, and a fixed gun arm 4 is provided above the pressurizing cylinder 1, extending beyond the movable gun arm 3 and facing the tip of the movable gun arm 3. Welding by sandwiching the workpiece between electrodes 3a and 4a attached to the opposite surfaces of the tips of 4C
A type welding gun was constructed. A transformer 5 is provided on the tail end side of the fixed gun arm 4, and the secondary coil 5a of the transformer 5 has a center tap 5b and terminals at both ends of the coil opposite in the width direction of the transformer 5, as shown in FIG. board 5c,
5c, and these center taps 5b and terminal plates 5c, 5c were made to protrude from the front end surface of the transformer 5, as shown in FIGS. 1 and 2. And both terminal plates 5c, 5c
In the meantime, as shown in FIGS. 2 and 3, the plate-shaped tail end 4b of the fixed gun arm 4 is inserted between each terminal plate 5c with a rectifier 6 interposed between the two terminal plates 5c. , 5c
is clamped between a pair of presser plates 7, 7 provided on both outer sides in the opposing direction via an insulating material 8 and a disc spring 9, and both terminal plates 5c,
The tail end 4b of the fixed gun arm 4 is clamped and fixed between the rectifiers 6 and 5c. 10 in the figure is the presser plate 7
, 7 tightening bolts.
【０００８】前記両押え板のうち一方の押え板７は、そ
の上縁部尾方に延出した端子部７ａにおいて前記センタ
ータップ５ｂに接続されており、該押え板７の上縁部先
端に形成した端子部７ｂと、固定ガンアーム３に形成し
た図４に示す如き斜め上方に突出する端子部３ｂとの間
にオンス銅板１１を配線し、該押え板７を給電用の中継
部材として可動ガンアーム３に給電するようにした。以
上の構成により、可動ガンアーム３と固定ガンアーム４
との間には、前後１対の整流器６、６で全波整流された
直流電流が流れ、両ガンアーム３、４の電極３ａ、４ａ
間に挾圧されるワークのスポット溶接が行なわれる。
尚、固定ガンアーム４の下縁側方に張り出すリブ４ｃは
片側のみに形成し、該アーム４のリブ４ｃを有しない側
面側にオンス銅板１１の配線スペースを確保して、オン
ス銅板１１がトランス５の幅方向外方に大きく張り出さ
ないようにした。One of the presser plates 7 is connected to the center tap 5b at a terminal portion 7a extending toward the rear of its upper edge, and is formed at the tip of the upper edge of the presser plate 7. An ounce copper plate 11 is wired between the terminal portion 7b formed on the fixed gun arm 3 and the terminal portion 3b formed on the fixed gun arm 3 and protruding diagonally upward as shown in FIG. I tried to supply power to the. With the above configuration, the movable gun arm 3 and the fixed gun arm 4
A direct current that has been full-wave rectified by a pair of front and rear rectifiers 6, 6 flows between the electrodes 3a, 4a of both gun arms 3, 4.
Spot welding of the workpieces that are clamped between them is performed. Note that the rib 4c protruding to the side of the lower edge of the fixed gun arm 4 is formed only on one side, and a wiring space for the ounce copper plate 11 is secured on the side of the arm 4 that does not have the rib 4c, so that the ounce copper plate 11 can be connected to the transformer 5. to prevent it from protruding outward in the width direction.
【０００９】前記加圧シリンダ１は、ピストン１ｂを内
挿したシリンダバレル１ｃと、該バレル１ｃの両端のヘ
ッドカバー１ｄ、１ｄと、該両ヘッドカバー１ｄ、１ｄ
間に延設した複数のタイロッド１ｅとで構成されており
、前記両押え板７、７を加圧シリンダ１の先端側のヘッ
ドカバー１ｄの上方に一体的に突設し、固定ガンアーム
４の尾端部４ｂとトランス５の端子板５ｃ、５ｃとの挾
圧固定箇所において固定ガンアーム４とトランス５とを
押え板７、７を介して加圧シリンダ１に支持させるよう
にした。該加圧シリンダ１は、ロボット等の移動機構の
動作端に取付けられるガンブラケット１２に摺動自在に
支持されており、本実施例ではガイド機構を小型簡素化
すべく、加圧シリンダ１をその下側の１対のタイロッド
１ｅ、１ｅにおいてガンブラケット１２に形成した１対
のガイドスリーブ１２ａ、１２ａに摺動自在に挿通支持
させた。又、ピストンロッド１ａに加圧シリンダ１の尾
方に突出するロッド部１ｆを一体に形成すると共に、ガ
ンブラケット１２に該ロッド部１ｆに対向するストッパ
部１２ｂを一体に形成し、ガン開放時のピストンロッド
１ａの退動に際し、可動ガンアーム３が所定開度に開か
れたところでロッド部１ｆがストッパ部１２ｂに当接し
、以後当接反力でガンブラケット１２に対し加圧シリン
ダ１が前進して固定ガンアーム４が先方に開かれ、所謂
イコライズ動作が与えられるようにした。The pressurizing cylinder 1 includes a cylinder barrel 1c into which a piston 1b is inserted, head covers 1d, 1d at both ends of the barrel 1c, and both head covers 1d, 1d.
The holding plates 7, 7 are integrally provided above the head cover 1d on the tip side of the pressurizing cylinder 1, and the tail end of the fixed gun arm 4 The fixed gun arm 4 and the transformer 5 are supported by the pressurizing cylinder 1 via the presser plates 7, 7 at the clamping fixation locations between the portion 4b and the terminal plates 5c, 5c of the transformer 5. The pressure cylinder 1 is slidably supported by a gun bracket 12 that is attached to the operating end of a moving mechanism such as a robot. A pair of side tie rods 1e, 1e are slidably inserted into and supported by a pair of guide sleeves 12a, 12a formed on the gun bracket 12. Further, a rod portion 1f protruding toward the rear of the pressurizing cylinder 1 is integrally formed on the piston rod 1a, and a stopper portion 12b facing the rod portion 1f is integrally formed on the gun bracket 12, so that the piston can be stopped when the gun is opened. When the rod 1a is retracted, the rod part 1f comes into contact with the stopper part 12b when the movable gun arm 3 is opened to a predetermined opening degree, and from then on, the pressurizing cylinder 1 moves forward with respect to the gun bracket 12 due to the reaction force of the contact and is fixed. The gun arm 4 is opened toward the front, and a so-called equalizing action is applied.
【００１０】0010
【発明の効果】以上の説明から明らかなように、請求項
１の発明によれば、固定ガンアームの尾端部とトランス
の端子板との挾圧固定箇所の外側に設ける押え板を中継
部材としてここからオンス銅板を介して可動ガンアーム
に給電するため、細長形状の中継部材を用いる従来装置
に比し通電ロスを減少できると共に、別個の中継部材が
不要となって構造が簡単となり、更に請求項２の発明に
よれば、押え板を加圧シリンダに対する固定ガンアーム
とトランスとの支持ブラケットに兼用でき、構造を一層
簡素化できる効果を有する。[Effects of the Invention] As is clear from the above description, according to the invention of claim 1, the presser plate provided outside the clamping fixation point between the tail end of the fixed gun arm and the terminal plate of the transformer is used as a relay member. Since power is supplied from here to the movable gun arm via the ounce copper plate, current loss can be reduced compared to conventional devices that use elongated relay members, and a separate relay member is not required, simplifying the structure. According to the second aspect of the present invention, the holding plate can also be used as a supporting bracket for the fixed gun arm and the transformer for the pressurizing cylinder, which has the effect of further simplifying the structure.
【図１】 本発明装置の一例の一部を截除した側
面図[Fig. 1] A partially cutaway side view of an example of the device of the present invention
【図２】 その平面図[Figure 2] Plan view
【図３】 図１のＩＩＩ−ＩＩＩ線截断面図[Figure 3] Cutaway sectional view taken along line III-III in Figure 1
【図
４】 図１のＩＶ−ＩＶ線截断面図[Figure 4] Cross-sectional view taken along the line IV-IV in Figure 1
【図５】
トランスの二次コイルの斜視図[Figure 5]
Perspective view of the secondary coil of the transformer
１ 加圧シリンダ １ａ ピストン
ロッド １ｄ ヘッドカバー
３ 可動ガンアーム ４ 固定ガンアー
ム ５ トランス
５ａ 二次コイル ５ｃ 端子板
６ 整流器1 Pressurized cylinder 1a Piston rod 1d Head cover 3 Movable gun arm 4 Fixed gun arm 5 Transformer 5a Secondary coil 5c Terminal board
6 Rectifier
Claims (2)
に突出するピストンロッドに取付けた可動ガンアームと
、加圧シリンダ側から可動ガンアームの先方にのびて該
可動ガンアームの先端部に対向する固定ガンアームと、
固定ガンアームの尾端側に設けたトランスとを備えるＣ
型溶接ガン装置であって、トランスの二次コイルのセン
タータップを給電用中継部材とオンス銅板を介して可動
ガンアームに接続すると共に、トランスの二次コイルの
両端に連なる対向配置された１対の端子板間に固定ガン
アームの尾端部を該各端子板との間に夫々整流器を介在
させた状態で挿入し、両端子板をその対向方向両外側に
設けた１対の押え板間で挾圧して、固定ガンアームの尾
端部を両端子板間に整流器を介して挾圧固定するものに
おいて、一方の端子板の外側の押え板を該端子板に対し
絶縁し、該押え板に前記センタータップ端子と前記オン
ス銅板とを接続して、該押え板を前記中継部材に構成し
たことを特徴とするＣ型溶接ガン装置。1. A pressurizing cylinder, a movable gun arm attached to a piston rod protruding forward of the pressurizing cylinder, and a fixed gun arm extending from the pressurizing cylinder side to the forward end of the movable gun arm and facing the tip of the movable gun arm. and,
C equipped with a transformer provided on the tail end side of the fixed gun arm
type welding gun device, in which the center tap of the secondary coil of the transformer is connected to the movable gun arm via a power supply relay member and an ounce copper plate, and a pair of oppositely arranged Insert the tail end of the fixed gun arm between the terminal plates with a rectifier interposed between each terminal plate, and sandwich both terminal plates between a pair of holding plates provided on both outer sides in the opposing direction. In a device in which the tail end of a fixed gun arm is clamped and fixed between both terminal plates via a rectifier, the outer presser plate of one terminal plate is insulated from the terminal plate, and the center plate is attached to the presser plate. A C-type welding gun device, characterized in that a tap terminal and the ounce copper plate are connected, and the presser plate is configured as the relay member.
ッドカバーに一体的に設けたことを特徴とする請求項１
に記載のＣ型溶接ガン装置。2. Claim 1, wherein both the presser plates are integrally provided on the head cover of the pressure cylinder.
C type welding gun device described in.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3058579A JPH08305B2 (en) | 1991-03-22 | 1991-03-22 | C-type welding gun device |
| US07/843,430 US5276296A (en) | 1991-03-22 | 1992-02-28 | Welding gun apparatus |
| GB9204511A GB2254031B (en) | 1991-03-22 | 1992-03-02 | Welding gun apparatus |
| GB9410711A GB2278562B (en) | 1991-03-22 | 1992-03-02 | Welding gun apparatus |
| CA002062559A CA2062559C (en) | 1991-03-22 | 1992-03-10 | Welding gun apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3058579A JPH08305B2 (en) | 1991-03-22 | 1991-03-22 | C-type welding gun device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04294872A true JPH04294872A (en) | 1992-10-19 |
| JPH08305B2 JPH08305B2 (en) | 1996-01-10 |
Family
ID=13088366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3058579A Expired - Fee Related JPH08305B2 (en) | 1991-03-22 | 1991-03-22 | C-type welding gun device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08305B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101871923B1 (en) * | 2016-08-16 | 2018-06-27 | (주)유영기업 | Grinding wheel |
-
1991
- 1991-03-22 JP JP3058579A patent/JPH08305B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08305B2 (en) | 1996-01-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19960702 |
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| LAPS | Cancellation because of no payment of annual fees |