JP2004122203A - Cooling unit of robot gun having transformer - Google Patents

Cooling unit of robot gun having transformer Download PDF

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Publication number
JP2004122203A
JP2004122203A JP2002292215A JP2002292215A JP2004122203A JP 2004122203 A JP2004122203 A JP 2004122203A JP 2002292215 A JP2002292215 A JP 2002292215A JP 2002292215 A JP2002292215 A JP 2002292215A JP 2004122203 A JP2004122203 A JP 2004122203A
Authority
JP
Japan
Prior art keywords
welding
transformer
robot
gun
welding gun
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.)
Pending
Application number
JP2002292215A
Other languages
Japanese (ja)
Inventor
Arinobu Mori
毛利　有延
Yutaka Matsubayashi
松林　豊
Naoki Aihara
相原　直樹
Tasuku Mochizuki
望月　翼
Yoshio Sato
佐藤　良夫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Obara Corp
Original Assignee
Obara Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Obara Corp filed Critical Obara Corp
Priority to JP2002292215A priority Critical patent/JP2004122203A/en
Publication of JP2004122203A publication Critical patent/JP2004122203A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a cooling unit of a robot gun having a transformer for reliably and easily cooling the robot gun at a low cost by independently cooling a welding gun body and a welding transformer on the welding gun body side irrespective of a robot body connected thereto. <P>SOLUTION: In the robot gun having the transformer with a welding transformer 3 mounted on a welding gun body 1 connected to a robot arm 2, a circulation pump 15 is disposed on the welding gun body, and a circulation flow passage of a refrigerant circulating the circulation pump, the welding transformer, the welding gun body and a radiator 16 is formed in the welding gun body. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、ロボットア―ムに接続される溶接ガン本体に溶接トランスを搭載したトランス付ロボットガンにおける発熱部である溶接ガン本体や溶接トランス等の発熱箇所を冷却するトランス付ロボットガンの冷却装置に関するものである。
【０００２】
【従来の技術】
従来、ロボットア―ムに接続される溶接ガンに溶接トランスを搭載したトランス付ロボットガンにおける発熱部である溶接ガン本体や溶接トランス等の発熱箇所を冷却するトランス付ロボットガンの冷却装置として、冷却装置のポンプやラジエ―タ―等をロボット本体側に配置して、これらと溶接ガン本体や溶接トランス等を給水ホ―スと排水ホ―スで接続して冷却媒体の循環経路を形成したものがある（例えば、特許文献１参照。）。
【０００３】
【特許文献１】
特開平１０ー２６３８４３号公報（
【０００６】ないし
【００１０】および図１ないし図３）
【０００４】
【発明が解決しようとする課題】
ところで、前記従来のトランス付ロボットガンの冷却装置においては、冷却装置のポンプやラジエ―タ―等がロボット本体側に配置され、これらと溶接ガン本体や溶接トランス等を給水ホ―スと排水ホ―スで接続しているため、これらホ―スがロボットの動作に連動して動いて冷却媒体の供給および排水が正確に行われない場合がある。また、ロボット本体と溶接ガン本体とを接続器具で連結する場合には、該接続器具に給・排水路を形成する必要があり、そのため接続器具が複雑となり且つ漏水防止の意味から精密な接続器具が要求される等の問題がある。
【０００５】
本発明は、従来の技術の有するこのような問題点に鑑みてなされたものであり、その目的とするところは、溶接ガン本体および溶接トランスの冷却を、これらが接続されるロボット本体とは無関係に溶接ガン本体側で独立して行うことにより、ロボットガンの冷却が確実・容易にできるコスト安のトランス付ロボットガンの冷却装置を提供しようとするものである。
【０００６】
【課題を解決するための手段】
上記目的を達成するために、本発明におけるトランス付ロボットガンの冷却装置は、ロボットア―ムに接続される溶接ガン本体に溶接トランスを搭載したトランス付ロボットガンにおいて、溶接ガン本体に循環ポンプを配置し、該溶接ガン本体に循環ポンプと溶接トランスおよび溶接ガン本体とラジエ―タ―とを循環する冷却媒体の循環流路を形成したことを特徴とするものである。
【０００７】
【発明の実施の形態】
添付図面を参照して本発明の実施例について説明する。
図１は本発明に係る冷却装置をＸ型ロボットガンに適用したものの要部の説明図、図２，図３は冷却媒体の循環例を示す説明図である。
【０００８】
図１において、１は溶接ガン本体、２はロボットア―ム、３は溶接ガン本体１に搭載された溶接トランスであり、溶接ガン本体１に溶接トランス３を搭載したトランス付ロボットガンはロボットア―ム２に接続されている。
【０００９】
前記溶接ガン本体１は、一方のガンア―ム４にシャンク５を介して電極６が取り付けられ、他方のガンア―ム７にはシャンク８を介して電極９が取り付けられている。そして、前記両ガンア―ム４，７の中間部は枢軸１０によってガンブラケット１１にそれぞれ軸支され、ガンア―ムの一方または両方が回動自在になされている。また、両ガンア―ム４，７の後端部間にはアクチュエ―タ―１２が配置され、各端部はこのアクチュエ―タ―１２のロッド１３または１４に接続されている。そして、前記ガンブラケット１１の後端部に前記ロボットア―ム２は接続されている。
【００１０】
したがって、溶接ガンはロボットア―ム２の移動に伴って所望の位置に移動され、所望の姿勢に制御されて溶接動作を行う。また、このロボットガンは、前記アクチュエ―タ―１２の駆動によって電極６，９が開閉動作を行うＸ型ロボットガンを構成している。
【００１１】
前記ガンブラケット１１には循環ポンプ１５とラジエ―タ―１６および前記溶接トランス３が配置されており、溶接ガン本体１に循環ポンプ１５と溶接トランス３および溶接ガン本体１とラジエ―タ―１６とを循環する冷却媒体の循環流路が形成されて、溶接ガン本体１と溶接トランス３の発熱部を冷却するようになっている。
【００１２】
前記冷却媒体の循環流路は、図２に示すように循環ポンプ１５から溶接トランス３，ラジエ―タ―１６，溶接ガン本体１，ラジエ―タ―１６を経て循環ポンプ１５に戻る循環路、あるいは図３に示すように循環ポンプ１５から並列に溶接トランス３と溶接ガン本体１に流下しこれらを冷却した後，ラジエ―タ―１６に集められてから循環ポンプ１５に戻る循環路等が考えられる。
【００１３】
以上のように、溶接ガン本体に循環ポンプを配置し、該溶接ガン本体に循環ポンプと溶接トランスおよび溶接ガン本体とラジエ―タ―とを循環する冷却媒体の循環流路を形成して、溶接ガン本体および溶接トランスの冷却をこれらが接続されるロボット本体とは無関係に独立して行うようにしたので、ロボットガンの冷却がロボットの移動に左右されることがない。
【００１４】
なお、溶接ガンとしてＸ型ロボットガンについて説明をしたが、この発明はＣ型ロボットガンにも適用できることは当然のことである。またこの発明に使用される冷却媒体としては水は当然のこととして、水に代えて錆止液あるいは不凍液等を用いてもよい。
【００１５】
【発明の効果】
本発明では、溶接ガン本体に循環ポンプを配置し、該溶接ガン本体に循環ポンプと溶接トランスおよび溶接ガン本体とラジエ―タ―とを循環する冷却媒体の循環流路を形成して、溶接ガン本体および溶接トランスの冷却をこれらが接続されるロボット本体とは無関係に独立して行うようにしたので、ロボットガンの冷却がロボットの移動に左右されず確実・容易にでき、製作コストも安いトランス付ロボットガンの冷却装置となる。
【図面の簡単な説明】
【図１】図１は本発明に係る冷却装置をＸ型ロボットガンに適用したものの要部の説明図である。
【図２】図２は冷却媒体の循環例を示す説明図である。
【図３】図３は冷却媒体の他の循環例を示す説明図である。
【符号の説明】
１　　　　　　　　　　　　溶接ガン本体
２　　　　　　　　　　　　ロボットア―ム
３　　　　　　　　　　　　溶接トランス
１５　　　　　　　　　　　循環ポンプ
１６　　　　　　　　　　　ラジエ―タ―[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a cooling device for a transformer-equipped robot gun that cools a heat-generating portion, such as a welding gun body or a welding transformer, which is a heat-generating part in a robot gun with a transformer in which a welding transformer is mounted on a welding gun body connected to a robot arm. It is about.
[0002]
[Prior art]
Conventionally, as a cooling device for a transformer-equipped robot gun that cools heat-generating parts, such as the welding gun body and welding transformer, which are the heat-generating parts of a robot gun equipped with a transformer mounted on a welding gun connected to the robot arm. The pump and radiator of the device are arranged on the robot body side, and these are connected to the welding gun body and welding transformer by the water supply hose and the drain hose to form a cooling medium circulation path. (For example, see Patent Document 1).
[0003]
[Patent Document 1]
JP-A-10-263843 (
And FIGS. 1 to 3)
[0004]
[Problems to be solved by the invention]
By the way, in the conventional cooling device for a transformer-equipped robot gun, a pump, a radiator, and the like of the cooling device are disposed on the robot body side, and the welding gun body, the welding transformer, and the like are supplied with a water supply hose and a drainage hose. In some cases, these hoses move in conjunction with the operation of the robot, and supply and drainage of the cooling medium may not be performed accurately. Further, when connecting the robot body and the welding gun body with a connecting device, it is necessary to form a water supply / drainage channel in the connecting device, which complicates the connecting device and requires a precise connecting device for preventing leakage. Is required.
[0005]
The present invention has been made in view of the above-mentioned problems of the related art, and has as its object to cool the welding gun body and the welding transformer independently of the robot body to which they are connected. Another object of the present invention is to provide a cooling device for a transformer-equipped robot gun, which can cool the robot gun reliably and easily by performing the operation independently on the welding gun body side.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a cooling device for a robot gun with a transformer according to the present invention is a robot gun with a transformer having a welding transformer mounted on a welding gun body connected to a robot arm. The welding gun body is provided with a circulation flow path for a cooling medium for circulating the circulation pump, the welding transformer, and the welding gun body and the radiator.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is an explanatory view of a main part of a cooling apparatus according to the present invention applied to an X-type robot gun, and FIGS. 2 and 3 are explanatory views showing examples of circulation of a cooling medium.
[0008]
In FIG. 1, reference numeral 1 denotes a welding gun main body, 2 denotes a robot arm, 3 denotes a welding transformer mounted on the welding gun main body 1, and a robot gun with a transformer having the welding transformer 3 mounted on the welding gun main body 1 is a robot arm. -Is connected to
[0009]
The welding gun body 1 has an electrode 6 attached to one gun arm 4 via a shank 5, and an electrode 9 attached to the other gun arm 7 via a shank 8. An intermediate portion between the two gun arms 4 and 7 is supported by a gun bracket 11 by a pivot 10 so that one or both of the gun arms are rotatable. An actuator 12 is disposed between the rear ends of the gun arms 4 and 7, and each end is connected to a rod 13 or 14 of the actuator 12. The robot arm 2 is connected to the rear end of the gun bracket 11.
[0010]
Therefore, the welding gun is moved to a desired position with the movement of the robot arm 2 and controlled to a desired posture to perform a welding operation. Further, this robot gun constitutes an X-type robot gun in which the electrodes 6 and 9 open and close by the driving of the actuator 12.
[0011]
A circulation pump 15, a radiator 16, and the welding transformer 3 are disposed on the gun bracket 11. The circulation pump 15, the welding transformer 3, the welding gun body 1, and the radiator 16 are mounted on the welding gun body 1. Is formed, and a heat generating portion of the welding gun body 1 and the welding transformer 3 is cooled.
[0012]
The circulation path of the cooling medium is, as shown in FIG. 2, a circulation path from the circulation pump 15 to the circulation pump 15 via the welding transformer 3, the radiator 16, the welding gun body 1, and the radiator 16, or As shown in FIG. 3, after flowing down from the circulating pump 15 to the welding transformer 3 and the welding gun body 1 in parallel and cooling them, a circulating path or the like which is collected by the radiator 16 and returns to the circulating pump 15 can be considered. .
[0013]
As described above, the circulation pump is arranged in the welding gun body, and the circulation pump and the welding transformer, and the cooling medium circulation path for circulating the welding gun body and the radiator are formed in the welding gun body, and welding is performed. Since the cooling of the gun body and the welding transformer is performed independently of the robot body to which they are connected, the cooling of the robot gun does not depend on the movement of the robot.
[0014]
Although the X-type robot gun has been described as a welding gun, it is needless to say that the present invention can be applied to a C-type robot gun. In addition, as a cooling medium used in the present invention, naturally, water may be used, and instead of water, a rust preventive liquid or an antifreeze liquid may be used.
[0015]
【The invention's effect】
According to the present invention, a circulation pump is disposed in the welding gun body, and a circulation path for a cooling medium that circulates the circulation pump, the welding transformer, and the welding gun body and the radiator is formed in the welding gun body. Since the cooling of the main body and the welding transformer is performed independently of the robot main body to which they are connected, the cooling of the robot gun can be reliably and easily performed without being affected by the movement of the robot, and the transformer is manufactured at a low cost. It becomes a cooling device for the attached robot gun.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a main part of a cooling device according to the present invention applied to an X-type robot gun.
FIG. 2 is an explanatory diagram showing an example of circulation of a cooling medium.
FIG. 3 is an explanatory diagram showing another example of circulation of a cooling medium.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Welding gun main body 2 Robot arm 3 Welding transformer 15 Circulation pump 16 Radiator

Claims (1)

ロボットア―ムに接続される溶接ガン本体に溶接トランスを搭載したトランス付ロボットガンにおいて、溶接ガン本体に循環ポンプを配置し、該溶接ガン本体に循環ポンプと溶接トランスおよび溶接ガン本体とラジエ―タ―とを循環する冷却媒体の循環流路を形成したことを特徴とするトランス付ロボットガンの冷却装置。In a robot gun with a transformer having a welding transformer mounted on a welding gun main body connected to a robot arm, a circulation pump is arranged on the welding gun main body, and the circulation pump and the welding transformer and the welding gun main body and the radiator are mounted on the welding gun main body. A cooling device for a robot gun with a transformer, wherein a cooling medium circulating flow path for circulating the cooling medium is formed.
JP2002292215A 2002-10-04 2002-10-04 Cooling unit of robot gun having transformer Pending JP2004122203A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002292215A JP2004122203A (en) 2002-10-04 2002-10-04 Cooling unit of robot gun having transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002292215A JP2004122203A (en) 2002-10-04 2002-10-04 Cooling unit of robot gun having transformer

Publications (1)

Publication Number Publication Date
JP2004122203A true JP2004122203A (en) 2004-04-22

Family

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Family Applications (1)

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Country Status (1)

Country Link
JP (1) JP2004122203A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006198631A (en) * 2005-01-18 2006-08-03 Nissan Motor Co Ltd Spot welding gun
JP2012143773A (en) * 2011-01-11 2012-08-02 Kanto Auto Works Ltd Cooling system for welding equipment
WO2017205953A1 (en) * 2016-06-03 2017-12-07 Powermig Automação E Soldagem Ltda Structural arrangement for a cooling system for welding, plasma cutting or laser machines
CN113165191A (en) * 2018-12-13 2021-07-23 川崎重工业株式会社 Cooling device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006198631A (en) * 2005-01-18 2006-08-03 Nissan Motor Co Ltd Spot welding gun
JP4517862B2 (en) * 2005-01-18 2010-08-04 日産自動車株式会社 Spot welding gun
JP2012143773A (en) * 2011-01-11 2012-08-02 Kanto Auto Works Ltd Cooling system for welding equipment
WO2017205953A1 (en) * 2016-06-03 2017-12-07 Powermig Automação E Soldagem Ltda Structural arrangement for a cooling system for welding, plasma cutting or laser machines
CN113165191A (en) * 2018-12-13 2021-07-23 川崎重工业株式会社 Cooling device
KR20210097185A (en) 2018-12-13 2021-08-06 카와사키 주코교 카부시키 카이샤 cooling device
DE112019006204T5 (en) 2018-12-13 2021-10-07 Kawasaki Jukogyo Kabushiki Kaisha Cooling device

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