WO2015064582A1 - 溶接ガン - Google Patents
溶接ガン Download PDFInfo
- Publication number
- WO2015064582A1 WO2015064582A1 PCT/JP2014/078649 JP2014078649W WO2015064582A1 WO 2015064582 A1 WO2015064582 A1 WO 2015064582A1 JP 2014078649 W JP2014078649 W JP 2014078649W WO 2015064582 A1 WO2015064582 A1 WO 2015064582A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gun
- arm
- guide
- guide groove
- movable
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/30—Features relating to electrodes
- B23K11/31—Electrode holders and actuating devices therefor
- B23K11/314—Spot welding guns, e.g. mounted on robots
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/10—Spot welding; Stitch welding
- B23K11/11—Spot welding
- B23K11/115—Spot welding by means of two electrodes placed opposite one another on both sides of the welded parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/36—Auxiliary equipment
Definitions
- the present invention relates to a welding gun. Specifically, the present invention relates to a welding gun (clamp welder gun) that performs welding with a workpiece sandwiched between a pair of electrode tips.
- a welding gun clamp welder gun
- the position of the welding gun during welding is a portion that fits into the guide groove (guide pin in Patent Document 1).
- the roller follower is oriented in the horizontal direction.
- a load in the thrust direction is further applied to the movable gun arm, and it cannot be sufficiently received.
- the component parts are worn, and the movable gun arm is rattled, causing defects such as tip offset, resulting in a decrease in welding quality.
- An object of the present invention is to provide a welding gun that can effectively receive a load in the thrust direction and improve durability, and can have a large and large movable gun arm even if the main body is small. .
- the invention of (1) includes a fixed gun arm fixed to the gun body, a movable gun arm facing the fixed gun arm, and a drive device provided on the gun body side, and the movable gun arm is disposed on the gun body side.
- the arm holder penetrates the guide groove.
- a plurality of guide pins provided integrally with each other, brackets fixed to both ends of the guide pins with a length straddling the guide groove in a direction perpendicular to the axis of the guide pins,
- a thrust direction member having a thrust receiving member provided at both ends of the bracket and abutting against the gun body so as to be movable along the guide groove. Characterized in that it comprises a de mechanism.
- the thrust direction guide mechanism makes it possible to receive a thrust load that is high in wear resistance, low in sliding resistance, and independent of the cam profile. Thereby, even if it does not specify the attitude
- the thrust receiving member is preferably a plain bear that abuts a part of a sphere against the side of the gun body.
- the sphere since the sphere has high durability and reliability and the friction during pressurization is small, it can receive a larger load in the thrust direction.
- the two thrust receiving members are Preferably, the guide groove is provided so as to be inclined at a uniform length on both sides of the guide groove in a direction along the moving surface on the gun body side.
- the moving surface on the gun body side can be moved in a balanced manner, and the thrust receiving member is moved on the reinforcing plate.
- the reinforcing plate can be formed compactly along the guide groove.
- the welding gun which can receive a load of a thrust direction effectively, improves durability, and can provide a large-sized movable gun arm with a large weight even if a main-body part is small can be provided. .
- FIG. 1 is a side view of a main part of a welding gun showing an embodiment of the present invention
- FIG. 2 is a longitudinal front view of the main part of FIG.
- the welding gun 10 is a guide groove type welding gun, and is a so-called servo gun using a servo motor as a drive source.
- the welding gun 10 includes a gun body 11, a fixed gun arm 12, an arm holder 13, a movable gun arm 14, a motor drive unit (drive device) 15, and a transformer 16.
- a pair of left and right side plates 11a of the gun body 11 is formed with a first guide groove 17a whose upper end is curved backward and a second guide groove 17b which is curved forward, separated from each other in the vertical direction. Yes.
- the base end of the fixed gun arm 12 is fixed to the lower part of the gun body 11, and extends forward (rightward in FIG. 1) from the gun body 11.
- An electrode tip (not shown) is attached to the tip of the fixed gun arm 12 upward.
- the arm holder 13 is provided by extending a pair of upper and lower leg portions 13a and 13b between the side plates 11a of the gun body 11, and guide pins 19a and 19b each having a hollow shaft are provided at the ends of the leg portions 13a and 13b. It is penetrated horizontally.
- the pair of upper and lower legs 13a and 13b are integrated by a pair of left and right connecting rods 20, the upper guide pin 19a is separated into the first guide groove 17a, and the lower guide pin 19b is separated into the second guide groove 17b. To be penetrated.
- a roller follower 21a that engages with the first guide groove 17a and a roller follower 21b that engages with the second guide groove 17b are respectively attached around the pins near both ends of each guide pin 19a, 19b.
- roller follower 21a of the upper guide pin 19a moves along the first guide groove 17a
- roller follower 21b of the lower guide pin 19b moves along the second guide groove 17b. And move along the first guide groove 17a and the second guide groove 17b.
- the movable gun arm 14 has a proximal end fixed to the arm holder 13 and extends forward (rightward in FIG. 1) from the arm holder 13.
- An electrode chip (not shown) is attached to the tip of the movable gun arm 14 downward.
- the movable gun arm 14 also moves along the guide groove 17 together with the arm holder 13.
- thrust direction guide mechanisms are provided at both ends of each of the guide pins 19a, 19b that penetrate the pair of left and right side plates 11a of the gun body 11.
- the thrust direction guide mechanism is fixed to both ends of each guide pin 19a, 19b so as to extend across the first and second guide grooves 17a, 17b in a direction perpendicular to the axis of the guide pin 19a, 19b.
- Brackets 23a, 23b and the brackets 23a, 23b are attached to both ends, and a part of the sphere is applied to the side plate 11a of the gun body 11 so as to be movable along the first and second guide grooves 17a, 17b.
- the guide pins 19a and 19b are constituted by both screw bolts, and the brackets 23a and 23b are fitted to the screw portions of the guide pins 19a and 19b.
- the brackets 23a and 23b are screwed to the end portions of the guide pins 19a and 19b by nuts 26a and 26b that are screwed into the screw portions of the guide pins 19a and 19b.
- the planar bearers 24a on both sides are positioned with a uniform length on both sides of the first guide groove 17a. It is provided so as to incline forward in the direction along the side plate 11a of the gun body 11 which is the moving surface.
- brackets 23a and 23b are integrated by the connecting rod 27, it is not necessary to be integrated in particular.
- the plain bears 24a and 24b may be moved on the reinforcing plate 28 made of a material harder than the spheres of the plain bears 24a and 24b, which are attached to the side plates 11a of the gun body 11. Further, the cover 29 may be fixed on the side plate 11a of the gun body 11 so as to completely cover the thrust direction guide mechanism.
- the motor drive unit 15 includes a unit housing (not shown), a servo motor, a feed screw mechanism, an encoder 32, and a pressure rod 33.
- the unit housing accommodates a servo motor, a feed screw mechanism, an encoder 32, and a pressure rod 33.
- the unit housing is integrally fixed to the lower ends of the side plates 11 a of the gun body 11.
- the servo motor and the pressure rod 33 are adapted to convert the rotational movement of the servo motor into a forward / backward movement (vertical movement) in the axial direction of the pressure rod 33 via a feed screw mechanism composed of a ball screw and a nut.
- a feed screw mechanism composed of a ball screw and a nut.
- the tip of the pressure rod 33 is attached to a guide pin 19b that passes through a leg 13b below the arm holder 13 via a knuckle 34.
- the encoder 32 accurately determines the timing of the current flowing between the electrode tips when the electrode tip (not shown) of the movable gun arm 14 is moved relative to the electrode tip (not shown) of the fixed gun arm 12, and In order to control the operation of the movable gun arm 14, the rotation angle of the servo motor is detected.
- the transformer 16 is attached to the outside of the motor drive unit 15. When the work (plate material) is sandwiched between the electrode tip of the movable gun arm 14 and the electrode tip of the fixed gun arm 12, the transformer 16 causes a welding current to flow between the electrode tips.
- the pressure rod 33 moves up and down, and the arm holder 13 is connected via the lower guide pin 19b to which the knuckle 34 of the pressure rod 33 is attached. Moves up and down, thereby opening and closing the movable gun arm 14.
- spot welding is performed by sandwiching a workpiece (plate material) between the electrode tip and the electrode tip of the fixed gun arm 12.
- two guide pins 19a and 19b provided on the arm holder 13 and both ends of the guide pins 19a and 19b are first in a direction perpendicular to the axis of the guide pins 19a and 19b.
- the brackets 23a and 23b have a length straddling the second guide grooves 17a and 17b, and are provided at both ends of the brackets 23a and 23b.
- the first and second guide grooves 17a and 17b A thrust direction guide mechanism having plain bears 24a and 24b that come into contact with the side plate 11a of the gun body 11 is provided.
- This thrust direction guide mechanism makes it possible to receive a thrust load that is highly durable and wear resistant, has low sliding resistance, and is not influenced by the cam profile, and can be welded without specifying the position of the welding gun 10 during welding.
- the load due to the thrust load on the gun 10 can be reduced, and the durability of the welding gun 10 can be improved.
- planar bearers 24a and 24b in which a part of a sphere comes into contact with the side plate 11a of the gun body 11 are used for the thrust receiving member. Accordingly, a larger load in the thrust direction can be received by the sphere having high durability and reliability and small friction during pressurization.
- the two plane bearers 24a and 24b are positioned at a uniform length on both sides of the first guide groove 17a. As shown, it is inclined and provided in a direction along the side plate 11a which is the moving surface of the gun body 11.
- the side plate 11a of the gun body 11 can be moved in a well-balanced manner, and the plane bear 24a is moved on the reinforcing plate 28.
- the reinforcing plate 28 can be compactly formed along the first guide groove 17a.
- the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the present invention.
- the first and second guide grooves may be formed of a series of inverted J shapes.
- the thrust receiving member is not limited to the plain bear but may be another rolling element structure or a sliding element structure.
- the welding gun is not limited to a servo gun that uses a servo motor as a drive source, but may use a pressure cylinder as a drive source.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Robotics (AREA)
- Resistance Welding (AREA)
Abstract
Description
ところが、打点により溶接ガンの姿勢が大きく変わる場合、可動ガンアームに、スラスト方向の荷重がさらに加わり、それを十分に受けられなくなる。
これにより、構成部品が摩耗して、可動ガンアームにガタツキが生じ、チップオフセットなどの不具合が生じて溶接品質の低下を招来する。
図1は本発明の一実施形態を示す溶接ガンの要部側面図、図2は図1の要部縦断正面図である。
スラスト方向ガイド機構は、各ガイドピン19a,19bの両端部に当該ガイドピン19a,19bの軸線と直交する方向に、第1,第2ガイド溝17a,17bを跨ぐ長さを有して固設されたブラケット23a,23bと、該ブラケット23a,23bの両端部に装着されて第1,第2ガイド溝17a,17bに沿って移動可能にガン本体11の側板11a上に球体の一部を当接するプレインベア(スラスト受部材)24a,24bと、を有する。
ユニットハウジングは、サーボモータ、送りねじ機構、エンコーダ32及び加圧ロッド33を収容する。ユニットハウジングは、ガン本体11の両側板11aの下端部に一体的に固定される。
加圧ロッド33の先端部はナックル34を介してアームホルダ13の下方の脚部13bを貫通するガイドピン19bに取り付けられる。
例えば、第1,第2ガイド溝は逆J字状の一連のもので形成しても良い。また、スラスト受部材はプレインベアに限らず、その他の転動体構造や摺動体構造でも良い。また、溶接ガンは、サーボモータを駆動源に用いるサーボガンに限らず、加圧シリンダを駆動源に用いるものでも良い。
11 ガン本体
12 固定ガンアーム
13 アームホルダ
14 可動ガンアーム
15 モータ駆動ユニット
17a 第1ガイド溝
17b 第2ガイド溝
19a,19b ガイドピン
23a,23b ブラケット
24a,24b プレインベア
Claims (3)
- ガン本体に固定された固定ガンアームと、該固定ガンアームに対向する可動ガンアームと、前記ガン本体側に設けられた駆動装置とを備え、前記可動ガンアームが前記ガン本体側に形成されたガイド溝に沿って移動自在なアームホルダに連結され、前記駆動装置により前記アームホルダを介して前記可動ガンアームが開閉作動する溶接ガンにおいて、
前記アームホルダに、前記ガイド溝を貫通した状態で一体化させて設けられた複数本のガイドピンと、
前記ガイドピンの両端部に、当該ガイドピンの軸線と直交する方向に前記ガイド溝を跨ぐ長さを有して固設されたブラケットと、
前記ブラケットの両端部に設けられて、前記ガイド溝に沿って移動可能に前記ガン本体側に当接するスラスト受部材と、
を有するスラスト方向ガイド機構を備えることを特徴とする溶接ガン。 - 前記スラスト受部材は、球体の一部を前記ガン本体側に当接するプレインベアであることを特徴とする請求項1に記載の溶接ガン。
- 前記ブラケットは、少なくとも上方に位置するものは、当該ブラケットが前記ガイド溝の湾曲部に沿って移動する際に、二つのスラスト受部材が前記ガイド溝の両側に均一の長さで位置するように、前記ガン本体側の移動面に沿う方向に傾斜して設けられることを特徴とする請求項1又は2に記載の溶接ガン。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015545238A JP6086990B2 (ja) | 2013-10-29 | 2014-10-28 | 溶接ガン |
US15/032,247 US10307858B2 (en) | 2013-10-29 | 2014-10-28 | Welding gun |
CN201480059268.0A CN105682846B (zh) | 2013-10-29 | 2014-10-28 | 焊枪 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013224576 | 2013-10-29 | ||
JP2013-224576 | 2013-10-29 |
Publications (1)
Publication Number | Publication Date |
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WO2015064582A1 true WO2015064582A1 (ja) | 2015-05-07 |
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ID=53004184
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2014/078649 WO2015064582A1 (ja) | 2013-10-29 | 2014-10-28 | 溶接ガン |
Country Status (4)
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US (1) | US10307858B2 (ja) |
JP (1) | JP6086990B2 (ja) |
CN (1) | CN105682846B (ja) |
WO (1) | WO2015064582A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP7269572B2 (ja) * | 2020-09-30 | 2023-05-09 | 株式会社チップマン | コンタクトチップ取付装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3008034A (en) * | 1960-03-31 | 1961-11-07 | Jr Michael H Wolfbauer | Fluid-operated pressure-applying devices |
FR2459105A1 (fr) * | 1979-06-19 | 1981-01-09 | Wack Andre | Pince pour le soudage par points de deux elements |
EP1442819A2 (en) * | 2003-01-28 | 2004-08-04 | KGR S.r.l. | Resistance welding machine for sheets |
JP2008142752A (ja) * | 2006-12-12 | 2008-06-26 | Honda Motor Co Ltd | 溶接ガン |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4410782A (en) * | 1981-02-20 | 1983-10-18 | Honda Giken Kogyo Kabushiki Kaisha | Spot welding apparatus |
JPS6264481A (ja) * | 1985-09-13 | 1987-03-23 | Hongou Seisakusho:Kk | 溶接用ガン |
JPH0347745Y2 (ja) * | 1985-10-18 | 1991-10-11 | ||
JPH06155035A (ja) * | 1992-11-18 | 1994-06-03 | Honda Motor Co Ltd | X形溶接ガン |
KR100702081B1 (ko) | 2003-07-01 | 2007-04-02 | 가부시끼가이샤 이구찌 기꼬 세이사꾸쇼 | 볼 트랜스퍼 유닛 및 볼 테이블 |
JP5032783B2 (ja) * | 2006-03-31 | 2012-09-26 | 株式会社電元社製作所 | 抵抗スポット溶接機 |
JP5525372B2 (ja) | 2010-08-04 | 2014-06-18 | 本田技研工業株式会社 | 溶接ガン |
CN102941407B (zh) * | 2012-11-23 | 2016-12-21 | 上汽通用五菱汽车股份有限公司 | 焊钳 |
CN203109428U (zh) * | 2012-11-23 | 2013-08-07 | 上汽通用五菱汽车股份有限公司 | 焊钳 |
US9238551B2 (en) | 2013-04-02 | 2016-01-19 | Kalitta Air Llc | Ball transfer unit for cargo bay |
-
2014
- 2014-10-28 JP JP2015545238A patent/JP6086990B2/ja active Active
- 2014-10-28 US US15/032,247 patent/US10307858B2/en active Active
- 2014-10-28 WO PCT/JP2014/078649 patent/WO2015064582A1/ja active Application Filing
- 2014-10-28 CN CN201480059268.0A patent/CN105682846B/zh active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3008034A (en) * | 1960-03-31 | 1961-11-07 | Jr Michael H Wolfbauer | Fluid-operated pressure-applying devices |
FR2459105A1 (fr) * | 1979-06-19 | 1981-01-09 | Wack Andre | Pince pour le soudage par points de deux elements |
EP1442819A2 (en) * | 2003-01-28 | 2004-08-04 | KGR S.r.l. | Resistance welding machine for sheets |
JP2008142752A (ja) * | 2006-12-12 | 2008-06-26 | Honda Motor Co Ltd | 溶接ガン |
Also Published As
Publication number | Publication date |
---|---|
CN105682846B (zh) | 2018-04-17 |
US20160236295A1 (en) | 2016-08-18 |
US10307858B2 (en) | 2019-06-04 |
CN105682846A (zh) | 2016-06-15 |
JP6086990B2 (ja) | 2017-03-01 |
JPWO2015064582A1 (ja) | 2017-03-09 |
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