KR200144219Y1 - Bus-bar joint structure of welding gun - Google Patents

Bus-bar joint structure of welding gun Download PDF

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Publication number
KR200144219Y1
KR200144219Y1 KR2019960037677U KR19960037677U KR200144219Y1 KR 200144219 Y1 KR200144219 Y1 KR 200144219Y1 KR 2019960037677 U KR2019960037677 U KR 2019960037677U KR 19960037677 U KR19960037677 U KR 19960037677U KR 200144219 Y1 KR200144219 Y1 KR 200144219Y1
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South Korea
Prior art keywords
welding gun
welding
welding robot
bus
connection structure
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KR2019960037677U
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Korean (ko)
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KR19980024288U (en
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박태진
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양재신
대우자동차주식회사
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Publication of KR19980024288U publication Critical patent/KR19980024288U/en
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    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
    • H01R25/14—Rails or bus-bars constructed so that the counterparts can be connected thereto at any point along their length
    • H01R25/145—Details, e.g. end pieces or joints

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  • Engineering & Computer Science (AREA)
  • Robotics (AREA)
  • Mechanical Engineering (AREA)
  • Resistance Welding (AREA)

Abstract

본 고안은 용접로보트 용접건의 버스바(Bus Bar) 연결구조에 관한 것으로서, 점용접을 실시하는 용접로보트에서, 상·하부 암(12,14)이 가위식으로 상호 연동되는 용접건(10)을 변압기(30)의 양극단자와 음극단자에 연결된 동판상의 버스바(42,44)에 케이블(50,52)로 전기적으로 연결하여 이루어진 용접로보트 용접건의 버스바 연결구조에 있어서, 상기 버스바(42,44)의 선단 외측에 ㄱ자형으로된 연장바(60,62)의 일단이 각각 연결되고, 이 연장바(60,62)의 사이는 절연체(71,72)로 절연이 되며, 상기 연장바(60,62)의 타단과 상기 상·하부 암(12,14)의 후단이 각각 상기 케이블(50,52)로 직접 연결된 구조로 이루어진 것을 특징으로 한다.The present invention relates to a bus bar connection structure of a welding robot welding gun. In a welding robot performing spot welding, a welding gun 10 in which upper and lower arms 12 and 14 are interworked with scissors is provided. In the bus bar connection structure of the welding robot welding gun formed by electrically connecting the bus bars (42, 44) on the copper plate connected to the positive terminal and the negative terminal of the transformer (30) with cables (50, 52), the bus bar (42) One end of each of the extension bars 60 and 62 having an L-shape is connected to the outside of the tip of the 44, respectively, and the extension bars 60 and 62 are insulated by insulators 71 and 72, respectively. The other end of the 60 and 62 and the rear end of the upper and lower arms 12 and 14 are respectively configured to be directly connected to the cables 50 and 52, respectively.

따라서, 용접건의 동작에 의하여 발생하는 진동을 줄여 용접로보트 장비의 수명이 연장되고, 용접건의 회동반경을 줄임으로써 케이블의 손상을 방지하여 케이블의 수명도 연장되는 효과가 있다.Therefore, by reducing the vibration generated by the operation of the welding gun to extend the life of the welding robot equipment, by reducing the rotation radius of the welding gun has the effect of preventing damage to the cable to extend the life of the cable.

Description

용접로보트 용접건의 버스바 연결구조Busbar connection structure of welding robot welding gun

본 고안은 용접로보트 용접건의 버스바(Bus Bar) 연결구조에 관한 것으로서, 특히 자동차 바디패널 조립공정에서 점용접을 실시하는 용접로보트의 용접건을 변압기와 연결할 시 장비의 진동과 케이블의 파손을 방지하도록 한 용접로보트 용접건의 버스바 연결구조에 관한 것이다.The present invention relates to the bus bar connection structure of the welding robot welding gun. In particular, it prevents the vibration of the equipment and the damage of the cable when connecting the welding gun of the welding robot that performs spot welding in the automobile body panel assembly process with the transformer. It relates to a bus bar connection structure of a welding robot welding gun.

잘 아는 바와 같이 용접로보트는 제조분야에서 널리 쓰이고 있는 용접장비로서, 용접로보트라고 하면 예컨대 자동차의 생산공정중 특히 바디패널의 접합공정에서 사용되는 점용점(Spot Welding) 로보트를 그 대표적인 예로 들 수 있다.As is well known, welding robot is a welding equipment widely used in the manufacturing field. For example, a welding robot is a spot welding robot used in the production process of an automobile, especially in the bonding process of a body panel. .

이러한 용접로보트는 각 공정별 특성에 맞게 설치되어 통상 자동이송장치를 통하여 이송되어 온 소정의 판상부재에 또 다른 판상부재를 겹치고, 이 겹쳐진 판상부재의 소정부를 그 용접건으로 접합시켜 예컨대 자동차의 바디 등을 완성하게 된다.Such a welding robot is installed according to the characteristics of each process and overlaps another plate member to a predetermined plate member, which is usually conveyed through an automatic transfer device, and joins a predetermined portion of the overlapped plate member with the welding gun, for example, the body of an automobile. And so on.

이러한 용접로보트에 있어서 그 용접을 수행하는 용접건 부분과 이 용접건의 종래 전기적인 연결관계를 첨부된 도면 제1도에 개략적으로 예시하였는 바, 용접건(10)은 상·하부 암(12,14)이 가위식으로 상호 연동되게 구성된다.In the welding robot, the welding gun portion for performing the welding and the conventional electrical connection relationship of the welding gun are schematically illustrated in FIG. 1 of the accompanying drawings. The welding gun 10 includes the upper and lower arms 12 and 14. ) Is configured to interwork with scissors.

상기 하부 암(14)은 이동대(4)에 그 중간이 상·하로 회동가능하게 힌지되고, 상부 암(12)은 그 후단이 상기 이동대(4)에 설치된 실린더(6)에 연결되며, 상기 이동대(4)는 베이스(2)의 상단에 전·후로 이동가능하게 안착된다.The lower arm 14 is hinged up and down in the middle of the movable table 4, the upper arm 12 is connected to the cylinder (6), the rear end of which is installed on the movable table (4), The movable table 4 is mounted on the upper end of the base 2 so as to be movable back and forth.

이와 같은 용접로보트에서 용접을 실시할 경우에는 소정의 이송장치에 판상부재가 로딩된 후, 이 용접로보트로 이송되어 오면 상기 이동대(4)를 전진시켜 상기 상·하부 암(12,14) 선단의 팁(16,18)을 판상부재의 상·하단으로 진입시키고, 이후 실린더(6)를 작동시킴과 동시에 용접건(10)을 통전시키면, 상기 용접건(10)의 팁(16,18)이 판상부재를 압압하면서 판상부재가 국소적으로 녹아 접합되게 된다.In the case of welding in such a welding robot, when a plate-like member is loaded in a predetermined conveying device, and then transferred to the welding robot, the movable table 4 is advanced to advance the upper and lower arms 12 and 14. Of the tip 16, 18 of the plate member to the upper and lower ends of the plate member, and then operating the cylinder 6 and energizing the welding gun 10 at the same time, the tip (16, 18) of the welding gun 10 While pressing the plate member, the plate member is locally melted and joined.

여기서, 상기 용접건(10)에 전류를 공급하는 종래의 방법은 통상 변압기(30)의 양극단자와 음극단자에 연결된 동판상의 버스바(42,44)를 구비하고, 상·하부 암(12,14)의 후단에도 동판으로된 버스바(46,48)를 볼트(47,47')로 체결하여, 이 버스바(46,48)를 각각 변압기(30)측의 버스바(42,44)에 케이블(50,52)로 연결하여 이루어졌다.Here, the conventional method of supplying current to the welding gun 10 is generally provided with copper plate-shaped bus bars (42, 44) connected to the positive terminal and the negative terminal of the transformer 30, the upper and lower arms (12, The busbars 46 and 48 made of copper are also fastened to the rear ends of 14 by bolts 47 and 47 ', and the bus bars 46 and 48 are respectively connected to the bus bars 42 and 44 on the transformer 30 side. It was done by connecting cables 50,52 to.

그리고, 하나의 용접로보트 장비에는 통상 다수의 용접건(10)이 구비되는데, 이들을 상기 변압기(30)측 버스바(42,44)의 중간중간에 연결하여 사용하였다.In addition, one welding robot equipment is usually provided with a plurality of welding guns 10, these were used by connecting the middle of the bus bar (42, 44) of the transformer 30 side.

그러나, 상기한 전기적 연결구조를 갖는 종래의 버스바 연결구조에 있어서는, 상기 용접건(10)의 상·하부 암(12,14) 후단에 중량이 큰 버스바(46,48)가 길게 구비되므로, 상·하부 암(12,14)이 상·하로 회동될 시, 이 버스바(46,48)의 중량과 큰 회동반경으로 인해 첫째는 상·하부 암(12,14)과 버스바(46,48)를 체결하는 볼트(47,47')가 이완되어 전기적인 단선을 초래하고, 둘째는 상기 이동대(4)가 전·후로 이동될시 그 접동부에 마모를 촉진시켜 장비의 정밀도와 수명을 저하시키는 문제가 있었다.However, in the conventional busbar connection structure having the above electrical connection structure, since the heavy busbars 46 and 48 are provided long at the rear end of the upper and lower arms 12 and 14 of the welding gun 10. When the upper and lower arms (12,14) are rotated up and down, the first and the lower arms (12,14) and the busbars (46) are due to the weight of the bus bars (46,48) and the large turning radius. Bolts 47 and 47 'for fastening 48 are loosened, resulting in electrical disconnection. Second, when the movable table 4 is moved back and forth, wear and tear on the sliding part is promoted, thereby increasing the accuracy of the equipment. There was a problem of degrading the service life.

본 고안은 상기와 같은 문제를 해결하기 위해 안출된 것으로, 본 고안의 목적은 용접건을 변압기와 전기적으로 연결할 시 상기 용접건의 전체적인 중량과 회동반경을 줄일 수 있는 용접로보트의 용접건의 버스바 연결구조를 제공함에 있다.The present invention has been devised to solve the above problems, the object of the present invention is to connect the welding gun to the transformer when the bus bar connection structure of the welding robot welding gun that can reduce the overall weight and the turning radius of the welding gun In providing.

이와 같은 목적을 달성하기 위한 본 고안에 따른 용접로보트의 용접건의 버스바 연결구조는 용접건 후단에 연결되는 버스바를 삭제하고, 변압기에 연결된 버스바의 단부에 ㄱ자형의 연장바를 연결하며, 이 연장바의 단부에 상기 용접건의 후단을 케이블로 직접 연결한 것을 특징으로 한다.Bus bar connection structure of the welding gun of the welding robot according to the present invention for achieving the above object is to remove the bus bar connected to the rear end of the welding gun, connecting the extension bar of the L-shape to the end of the bus bar connected to the transformer, this extension The rear end of the welding gun is directly connected to the end of the bar by a cable.

제1도는 종래의 용접로보트 용접건의 버스바 연결구조를 도시한 도면.1 is a view showing a bus bar connection structure of a conventional welding robot welding gun.

제2도는 본 고안의 버스바 연결구조를 도시한 도면.2 is a view showing a bus bar connection structure of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

2 : 베이스 4 : 이동대2: base 4: mobile

10 : 용접건 12 : 상부 암10: welding gun 12: upper arm

14 : 하부 암 16,18 : 팁14: lower arm 16,18: tip

30 : 변압기 42,44 : 버스바30: transformer 42,44: busbar

50,52 : 케이블 60,62 : 연장바50,52 cable 60,62 extension bar

70,71,72 : 절연체70,71,72: insulator

이하, 첨부된 도면 제2도를 참조하며 본 고안의 바람직한 실시예를 상세히 설명하되, 제1도와 동일한 부분에 대하여는 동일한 부호를 부여하며, 그 반복되는 설명은 생략한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings of FIG. 2, and the same reference numerals are assigned to the same parts as those of FIG. 1, and repeated description thereof will be omitted.

첨부된 도면 제2도는 본 고안의 버스바 연결구조를 도시한 것으로서, 본 고안은 점용접을 실시하는 용접로보트에서, 상·하부 암(12,14)이 가위식으로 상호 연동되는 용접건(10)을 변압기(30)의 양극단자와 음극단자로부터 절연체(70)를 개재시켜 연장된 동판상의 버스바(42,44)에 케이블(50,52)로 전기적으로 연결하여 이루어지는 용접로보트의 용접건의 버스바 연결구조에 있어서, 상기 버스바(42,44)의 선단 외측에 ㄱ자형으로된 연장바(60,62)의 일단을 각각 연결하고, 이 연장바(60,62)의 사이는 절연체(71,72)로 절연을 시키며, 상기 연장바(60,62)의 타단에 상기 상·하부 암(12,14)의 후단을 각각 상기 케이블(50,52)로 직접 연결한 구조로 이루어지되, 상기 연장바(60,62)는 상기 버스바(42,44)와 동일하게 동판상으로 이루어진다.2 is a view illustrating a bus bar connection structure of the present invention, and the present invention is a welding robot for spot welding, in which a welding gun 10 in which upper and lower arms 12 and 14 are interlocked with scissors. ) Is a bus of a welding robot welding gun formed by electrically connecting cables 50 and 52 to copper bus bars 42 and 44 extending through the insulator 70 from the positive and negative terminals of the transformer 30. In the bar connection structure, one end of the L-shaped extension bars 60 and 62 are respectively connected to the outer ends of the bus bars 42 and 44, and the insulator 71 is provided between the extension bars 60 and 62, respectively. And 72, and the rear ends of the upper and lower arms 12 and 14 are directly connected to the cables 50 and 52 at the other ends of the extension bars 60 and 62, respectively. The extension bars 60 and 62 are formed in the same copper plate shape as the bus bars 42 and 44.

이와 같이 본 고안에서는 상·하부의 암(12,14)에 별도의 버스바가 연결되지 않고 케이블(50,52)이 직접 연결되므로 용접건(10)의 전체적인 중량이 감소되는 한편, 상·하부 암(12,14)의 회동반경이 줄어들게 되므로, 상·하부 암(12,14)의 동작에 따른 진동이 감소되고, 이에 따라 이동대(4)와 베이스(2)의 접동부에 과다한 마모가 발생하지 않게 되며, 또한 케이블(50,52)의 움직임이 작게 되므로 케이블(50,52)의 단선 우려도 줄어들게 된다.As such, in the present invention, since the bus bars are not directly connected to the upper and lower arms 12 and 14, and the cables 50 and 52 are directly connected, the overall weight of the welding gun 10 is reduced, and the upper and lower arms Since the rotation radius of the (12, 14) is reduced, vibration caused by the operation of the upper and lower arms (12, 14) is reduced, thereby causing excessive wear on the sliding portions of the movable table (4) and the base (2). In addition, since the movement of the cables 50 and 52 is reduced, the risk of disconnection of the cables 50 and 52 is reduced.

이상 설명한 바와 같이 본 고안의 용접로보트의 용접건의 버스바 연결구조는 용접건에 버스바를 구비하지 않고 케이블을 직접 연결함에 따라, 용접건의 동작에 의하여 발생하는 진동을 줄여 용접로보트 장비 전체의 손상을 방지하게 되므로 장비의 수명을 연장할 수 있으며, 용접건의 회동반경을 줄임으로써 케이블의 손상을 방지하게 되어 케이블의 수명도 연장시킬 수 있는 유용한 효과가 있다.As described above, the busbar connection structure of the welding gun of the welding robot of the present invention is connected to a cable without a busbar directly to the welding gun, thereby reducing the vibration generated by the operation of the welding gun, thereby preventing damage to the entire welding robot equipment. It can extend the life of the equipment, and by reducing the turning radius of the welding gun to prevent damage to the cable has a useful effect that can extend the life of the cable.

Claims (1)

점용접을 실시하는 용접로보트에서, 상·하부 암(12,14)이 가위식으로 상호 연동되는 용접건(10)을 변압기(30)의 양극단자와 음극단자로부터 절연체(70)를 개재시켜 연장된 동판상의 버스바(42,44)에 케이블(50,52)로 전기적으로 연결하여 이루어지는 용접로보트의 용접건의 버스바 연결구조에 있어서, 상기 버스바(42,44)의 선단 외측에 ㄱ자형으로된 연장바(60,62)의 일단이 각각 연결되고, 이 연장바(60,62)의 사이는 절연체(71,72)로 절연이 되며, 상기 연장바(60,62)의 타단과 상기 상·하부 암(12,14)의 후단이 각각 상기 케이블(50,52)로 직접 연결된 구조로 이루어진 것을 특징으로 하는 용접로보트 용접건의 버스바 연결구조.In the welding robot which performs spot welding, the welding gun 10 in which the upper and lower arms 12 and 14 interlock with each other by scissors is extended by interposing the insulator 70 from the positive terminal and the negative terminal of the transformer 30. In the bus bar connection structure of the welding gun of the welding robot which is electrically connected to the copper-shaped bus bars 42 and 44 by the cable 50 and 52, it has a L-shape outside the front end of the bus bars 42 and 44. One end of each of the extension bars 60 and 62 is connected, and between the extension bars 60 and 62 is insulated by an insulator 71 and 72, and the other end of the extension bars 60 and 62 and the image Busbar connection structure of the welding robot welding gun, characterized in that the rear end of the lower arm (12,14) is made of a structure connected directly to the cable (50, 52), respectively.
KR2019960037677U 1996-10-31 1996-10-31 Bus-bar joint structure of welding gun KR200144219Y1 (en)

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Application Number Priority Date Filing Date Title
KR2019960037677U KR200144219Y1 (en) 1996-10-31 1996-10-31 Bus-bar joint structure of welding gun

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KR19980024288U KR19980024288U (en) 1998-07-25
KR200144219Y1 true KR200144219Y1 (en) 1999-06-15

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