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KR950003261B1 - Linear welding device of a lower side flame in power shovel - Google Patents

Linear welding device of a lower side flame in power shovel Download PDF

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Publication number
KR950003261B1
KR950003261B1 KR1019930003853A KR930003853A KR950003261B1 KR 950003261 B1 KR950003261 B1 KR 950003261B1 KR 1019930003853 A KR1019930003853 A KR 1019930003853A KR 930003853 A KR930003853 A KR 930003853A KR 950003261 B1 KR950003261 B1 KR 950003261B1
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KR
South Korea
Prior art keywords
welding
side frame
lower side
power
welded
Prior art date
Application number
KR1019930003853A
Other languages
Korean (ko)
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KR940021179A (en
Inventor
김태주
Original Assignee
삼성중공업 주식회사
김연수
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Priority to KR1019930003853A priority Critical patent/KR950003261B1/en
Publication of KR940021179A publication Critical patent/KR940021179A/en
Application granted granted Critical
Publication of KR950003261B1 publication Critical patent/KR950003261B1/en

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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
    • B23K9/00—Arc welding or cutting
    • B23K9/02—Seam welding; Backing means; Inserts
    • B23K9/025—Seam welding; Backing means; Inserts for rectilinear seams
    • 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
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/0426—Fixtures for other work
    • 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
    • B23K9/00—Arc welding or cutting
    • B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
    • B23K9/127—Means for tracking lines during arc welding or cutting
    • B23K9/1272—Geometry oriented, e.g. beam optical trading
    • B23K9/1278—Using mechanical means
    • 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
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/006—Vehicles

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Geometry (AREA)
  • Optics & Photonics (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Arc Welding In General (AREA)

Abstract

The apparatus for automatically welding a lower side frame having a plurality of the reinforced plates with the base plate, comprises the welding-wire tracking guide rollers (52)(53) having a plurality of power mollers (22)(23) for loading / unloading welding torches (25)(26) running forward or backward along the rollers (52)(53); a feeding section on the device (27), for supplying the welding wire (61) to the torches (25)(26); subsidiary rollers (33)(34) for helding the power moller, lifting when the welding material is input/output. The apparatus simultaneously welds the left/right sides after the welding material input to the power moller is fixed according to the already-input program.

Description

중형굴삭기의 하부 사이드프레임 직선용접장치Lower side frame linear welding device for medium excavator

제1도는 본 발명에 의한 직선용접장치가 적용되는 하부 사이드프레임을 용접하기 위한 용접시스템의 개략도.1 is a schematic diagram of a welding system for welding a lower side frame to which a linear welding device according to the present invention is applied.

제2도는 본 발명에 의한 직선용접장치의 개략적인 정면도.2 is a schematic front view of a linear welding device according to the present invention.

제3도는 본 발명에 의한 직선용접장치를 설명하기 위한 제2도 일측부의 개략도.3 is a schematic view of a side portion of FIG. 2 for explaining a straight line welding apparatus according to the present invention.

제4도는 본 발명에 의한 직선용접장치의 개략적인 평면도.4 is a schematic plan view of a linear welding device according to the present invention.

제5도의 제5(a)도, 제5(b)도, 제5(c)도, 제5(d)도는 본 발명에 의한 제4도의 요부발췌도이다.5 (a), 5 (b), 5 (c) and 5 (d) of FIG. 5 are excerpts of the main portion of FIG. 4 according to the present invention.

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

21 : 용접부재 22,23 : 파워몰러(POWER MOLLER)21: welding member 22,23: power moller (POWER MOLLER)

24 : 몸체 25,26 : 용접토치24: body 25, 26: welding torch

27,28 : 이송장치 29,30 : 랙27,28: Feeder 29,30: Rack

31,32,39,40 : 유압실린더 33,34 : 보조롤러31,32,39,40: Hydraulic cylinder 33,34: Auxiliary roller

35,36 : 레버 37,38 : 롤러35,36 Lever 37,38 Roller

41,42 : 고정구 43 : 링크41,42: Fixture 43: Link

44,45 : 피니언 46,47 : 주행축44,45: pinion 46,47: driving shaft

48,49 : 헤드부 50,51 : 좌, 우 조정축48,49: head part 50,51: left and right adjustment shaft

52,53 : 안내롤러 54,55 : 안내봉52,53: guide roller 54,55: guide rod

56,57 : 안내핀 58 : 탄성부재56, 57: guide pin 58: elastic member

59,60 : 상,하 조정축 61 : 와이어59,60: up and down adjustment shaft 61: wire

62 : 피이딩부 63 : 팩62: feeding part 63: pack

본 발명은 중형굴삭기의 하부 사이드프레임을 로봇트 용접하는 경우 베이스판이 가접된 하부 사이드프레임의 양측에 대해 횡방향으로 이동하면서 동시에 용접하는 직선용접장치에 관한 것으로, 더욱 상세하게는 내측에 수개의 보강판이 용접된 후 이송수단에 의해 전달되는 베이스판이 가접완료된 하부 사이드프레임의 가접부위를 양측에 대해 주행하면서 동시에 메인용접하게 되는 직선용접장치에 관한 것이다.The present invention relates to a linear welding device for welding at the same time while moving in the transverse direction with respect to both sides of the lower side frame when the base plate is robotized welding the lower side frame of the medium excavator, more specifically, several reinforcement plate is The present invention relates to a linear welding device in which a base plate transmitted by a conveying means is welded to the both sides of the lower side frame where the base plate is welded and then welded to both sides.

일반적으로 중형굴삭기의 하부 사이드프레임과 같이 중량이 무거운 공작물을 용접로봇트를 이용하여 자동용접하기 위한 용접자동 시스템은 제1도에 개략적으로 도시된 바와같이, 사이드프레임의 내측에 보강되는 수개의 보강판 가접위치를 자동적으로 선정해주는 1차 서브가접지그(1)와, 이의 일측에 설치되어 서브가접 완료된 공작물을 이송시키는 로울러 컨베이어(2)와, 상기 로울러 컨베어(2)로부터 전달되는 공작물이 다음 공정에 이동 및 무인반송대차(3)의 로딩이 가능하도록 공작물을 180℃ 반전시키는 반전장치(4)와, 상기 무인 반송대차(3)에 의해 이송되는 공작물의 메인용접이 용접로봇트(5)(6)에 의해 가능하도록 공작물을 클램핑시키는 용접로봇트용 자동지그(7)(8)와, 무인반송대차(9)일측에 설치된 매인용접 완료된 공작물의 잔여용접을 위한 270°반전장치(10)와, 수개의 보강판이 용접완료된 공작물에 베이스판(11)을 가접하는 2차 서브 어셈블리 가접지그(12)와, 베이스판이 가접완료된 공작물의 가접부위 양측을 동시에 용접하는 직선용접장치(13)와, 보강판 및 베이스판이 용접완료된 공작물에 기어케이스를 가접하는 어셈블리 가접지그(14)와, 기어케이스가 가접된 공작물을 메인용접하는 어셈블리 용접로봇트(15)(16)용 가접지그(17)(18)와, 기어케이스가 용접완료된 공작물의 잔여용접을 위한 잔여용접장치(19)와, 상기와 같은 단위장치들이 연속적으로 자동제어하는 PLC 제어방식의 제어장치(20)등이 필요하게 된다.In general, a welding automatic system for automatically welding heavy workpieces using a welding robot, such as a lower sideframe of a medium excavator, has several reinforcement plates reinforced inside the sideframe, as schematically shown in FIG. The primary sub-folding jig 1 for automatically selecting the temporary welding position, the roller conveyor 2 for transporting the work that has been sub-welded and installed on one side thereof, and the workpiece delivered from the roller conveyor 2 are next. An inverting device 4 for inverting the workpiece by 180 ° C. so as to allow movement and loading of the unmanned conveying bogie 3 in the process, and the main welding of the workpiece conveyed by the unmanned conveying bogie 3 is a welding robot 5 ( 6) Automatic jig for welding robot (7) (8) for clamping the workpiece to be possible by 2) and 2 for the residual welding of the main welding completed workpiece installed on one side of the unmanned transfer truck (9) The 70 ° reversing device 10, the secondary sub-assembly joining jig 12 for joining the base plate 11 to the workpiece to which several reinforcement plates are welded, and the welded portions of the welded part of the workpiece to which the base plate is welded simultaneously The linear welding device 13, the assembly welding jig 14 for welding the gear case to the workpiece welded to the reinforcement plate and the base plate, and the assembly welding robot 15 and 16 for main welding the workpiece welded to the gear case. Welding welding jig (17) (18), the residual welding device 19 for the residual welding of the workpiece welded gear case, and the control device of the PLC control method 20 that the unit devices as described above continuously control automatically ) Is required.

본 발명은 중형굴삭기와 하부 사이드프레임을 용접로봇트를 이용하여 자동용접하는 경우 사이드프레임에 가접된 베이스판의 가접부위 메인용접시간용 전용 직선용접장치를 활용하여 사이드프레임의 용접부위를 가접단계와 양분시켜 메인용접함으로서 용접시간의 단축 및 용접부위의 품질이 향상되는 직선용접장치를 제공하는데 그 목적이 있는 것이다.According to the present invention, when the medium excavator and the lower side frame are automatically welded using a welding robot, the welding part of the side frame is welded to the side frame by using a linear welding device exclusively for the main welding time. The main purpose of the present invention is to provide a straight welding device which shortens the welding time and improves the quality of the welded portion by welding the main welding.

본 발명의 다른 목적은 가접완료된 공작물을 메인용접하는 도중 용접부위에 발생되는 용접부재의 가접상태에 따라 직선용접장치가 능동적으로 대처한 후 용접작업이 실시됨으로서 정확한 용접작업이 이루어져 제품의 품질이 더욱 향상되는 직선용접장치를 제공하는데 있는 것이다.Another object of the present invention is to improve the quality of the product is made by the welding operation is carried out after the linear welding device actively cope with the welding state of the welding member generated in the welding portion during the main welding of the workpiece is completed It is to provide a straight welding device.

상기와 같은 목적을 달성하기 위한 본 발명의 특징은 수개의 보강판이 용접된 중형굴삭기의 하부 사이드프레임에 가접된 베이스판을 자동용접함에 있어서, 용접부재를 로딩, 언로딩시키는 수개의 파워몰러가 형성된 몸체 양측에 용접선 추적용 안내롤러를 따라 전,후방으로 주행되는 용접토치를 구비한 이송장치가 형성되고, 상기 용접토치에 용접용 와이어를 공급하는 피이딩부가 이송장치에 형성되며, 상기 파워몰러의 전,후에 용접부재의 반입 및 반출시 승,하강되도록 보조롤러가 설치되어 직선용접장치를 구성하게 되며, 상기 파워몰러에 반입되는 용접부재를 미리 입력된 프로그램에 의해 고정시킨 후 좌,우 양측에 대해 주행하면서 동시에 용접하게 되는 것이다.A feature of the present invention for achieving the above object is that in the automatic welding of the base plate welded to the lower side frame of the medium excavator with several reinforcement plate welded, there are formed several power molar for loading and unloading the welding member A conveying device having a welding torch running forward and backward along the weld roller tracking guide rollers is formed on both sides of the body, and a feeding unit for supplying a welding wire to the welding torch is formed in the conveying device. Auxiliary rollers are installed to move up and down when the welding member is brought in and taken out before and after, so as to construct a linear welding device. We will run at the same time while welding.

이하, 본 발명에 의한 직선용접장치의 구성을 첨부된 도면을 참조하여 구체적으로 설명하면 다음과 같다.Hereinafter, the configuration of the linear welding device according to the present invention will be described in detail with reference to the accompanying drawings.

제2도 내지 제5도에 도시된 바와같이 수개의 보강판이 내측에 용접된 후 저면에 베이스판이 가접되어 이송되는 중형굴삭기의 하부 사이드프레임을 자동용접시키는 직선용접장치는 하부 사이드프레임(이하, 용접부재라고 함)(21)의 로딩, 언로딩용 수개의 파워몰러(power moller)(22)(23)가 형성된 몸체(24)와, 상기 몸체(24)의 좌,우 양측에 결합되어 전,후방향으로 이송되는 용접토치(25)(26)가 구비된 이송장치(27)(28)로서 이루어지며, 더욱 상세하게 설명하면, 상기 몸체(24)의 좌, 우 양측에 랙(29)(30)이 형성되고 파워몰러(22)(23)에 용접부재(21)의 반입, 반출시 각 유압실린더(31)(32)에 의해 승,하강되는 보조롤러(33)(34)가 몸체(24)의 전,후에 형성되며, 상기 보조롤러(33)(34)내측으로 용접부재(21)를 X축 방향으로 센터링시키는 레버(35)(36)과 롤러(37)(38)가 유압실린더(39)에 의해 링크적으로 작동되도록 형성되는 한편, 상기 파워몰러(22)(23)에 반입되는 용접부재(21)의 전,후부를 클램핑시키는 유압실린더(40)에 의해 수개의 링크(43)로서 작동되는 고정구(41)(42)가 상기 보조롤러(33)(34)외측으로 형성된다.As shown in FIGS. 2 to 5, a straight welding device for automatically welding the lower side frame of the medium excavator, in which several reinforcement plates are welded to the inside and the base plate is welded to the bottom, is transferred to the lower side frame (hereinafter, welded). And a body 24 formed with several power mollers 22 and 23 for loading and unloading the member 21, and coupled to both left and right sides of the body 24, It is made as a conveying device 27, 28 is provided with a welding torch 25, 26 that is conveyed in the rearward direction, in more detail, the rack 29 (on both left and right sides of the body 24) ( 30 is formed and the auxiliary rollers 33 and 34 which are lifted and lowered by the hydraulic cylinders 31 and 32 when the welding member 21 is carried in and out of the power molars 22 and 23. It is formed before and after the 24, the lever 35, 36 and the roller 37, 38 for centering the welding member 21 in the X-axis direction inside the auxiliary rollers 33 and 34 are hydraulic cylinders. To 39 It is formed to be linked by the operation, while being operated as several links 43 by the hydraulic cylinder 40 for clamping the front and rear of the welding member 21 carried in the power molar 22, 23. Fixtures 41 and 42 are formed outside the auxiliary rollers 33 and 34.

그리고, 상기 몸체(24)의 랙(29)(30)과 맞물려 용접토치(25)(26)의 주행속도 및 귀환동작을 하게되는 피니언(44)(45)을 단부에 구비한 주행축(46)(47)이 이송장치(27)(28)의 저면양측에 형성되고, 상기 이송장치(27)(28)에 용접토치(25)(26)를 360°각도 조정하며 용접시 Z축 방향으로 자체적으로 센터링 가능한 헤드부(48)(49)가 구비되며 용접부재(21)의 모델에 따라 좌, 우 위치이동되는 좌,우 조정축(50)(51)을 설치하되, 상기 헤드부(48)(49)에는 용접부재(21)의 측면에 밀착되어 이송되는 롤러(52)(53)를 단부에 구비한 안내봉(54)(55)이 형성되며, 상기 롤러(52)(53)를 따라 안내되는 용접토치(25)(26)가 용접부재(21)의 가접된 상태에 따라 용접부위와 일정간격을 유지할 수 있도록 안내핀(56)(57) 및 탄성부재(58)에 의해 탄력설치된 것이다.In addition, a traveling shaft 46 having pinions 44 and 45 at the end thereof engaged with the racks 29 and 30 of the body 24 to perform the traveling speed and the feedback operation of the welding torches 25 and 26. (47) are formed on both sides of the bottom of the conveying device (27) 28, the welding torches 25, 26 to the conveying device (27) 28 is adjusted by 360 ° angle in the Z-axis direction during welding Self-centering heads 48 and 49 are provided, and left and right adjustment shafts 50 and 51 which are moved to the left and right positions according to the model of the welding member 21 are installed. 49 is formed with guide rods 54 and 55 having end portions of rollers 52 and 53 which are brought in close contact with the side surfaces of the welding member 21, and the rollers 52 and 53 are formed in the end 49. As shown in FIG. The welding torches 25 and 26 guided along are elastically installed by the guide pins 56 and 57 and the elastic member 58 so as to maintain a predetermined interval with the welding portion according to the welded state of the welding member 21. .

상기 이송장치(27)(28)는 또한 용접부재(21)의 모델에 따라 상,하 이동조정이 가능한 상,하조정축(59)(60)이 형성되고, 상기 이송장치(27)(28)의 후방에 용접토치(25)(26)에 용접용 와이어(61)를 공급하는 피이딩부(62)가 형성되며, 상기 몸체(24)의 일측에 와이어(61) 저장용 팩(63)이 설치된다.The conveying apparatuses 27 and 28 are also provided with upper and lower adjusting shafts 59 and 60 capable of adjusting the upper and lower movements according to the model of the welding member 21, and the conveying apparatuses 27 and 28. Feeding part 62 for supplying the welding wire 61 to the welding torches 25 and 26 is formed at the rear of the body, and the wire 61 storage pack 63 is installed at one side of the body 24. do.

상기와 같이 구성되는 본 발명에 의한 직선용접장치의 작용, 효과를 설명하면, 제1도 및 제5도에 개략적으로 도시된 바와같이 중형굴삭기의 하부 사이드프레임(용접부재)(21) 내측에 수개의 보강판 가접위치를 선정해주는 1차 서브가접지그(1)에 의해 소정위치에 수동작으로서 보강한 후, 이송수단에 의해 다음공정으로 이송되는 용접부재에 베이스판을 가접하는 2차 서브 어셈블리 가접지그(12)에 의해 가접완료된 후 작업자에 의해 용접부재(21)가 몸체(24)의 파워몰러(22)(23)에 반입되는 것이다.Referring to the operation and effect of the linear welding device according to the present invention configured as described above, as shown schematically in Figs. 1 and 5, the inner side of the lower side frame (welding member) 21 of the medium excavator can be Secondary sub-assembly which reinforces by hand the first sub temporary contact jig 1 for selecting the reinforcement position of two reinforcement plates, and then welds the base plate to the welding member conveyed to the next process by the conveying means. After the temporary welding is completed by the temporary jig 12, the welding member 21 is carried into the power molar 22, 23 of the body 24 by the operator.

상기 파워몰러(22)(23)에 반입될때 보조롤러(33)(34)는 미리 프로그램화된 제어에 의해 유압실린더(31)(32)의 작동으로 인접한 파워몰러(22)(23)높이와 동일한 높이로 상승하게 되는 것이며, 상기 용접부재(21)가 몸체(24)의 소정위치에 반입되어 정지된 후 몸체(24)의 전,후방에 형성된 유압실린더(39)에 의해 작동되는 레버(35)(36)와 롤러(37)(38)에 의해 용접부재(21)가 X축 방향으로 센터링 완료되는 것이다.The auxiliary rollers 33 and 34, when loaded into the power mallers 22 and 23, are operated by the hydraulic cylinders 31 and 32 by pre-programmed control and the height of the adjacent power mallers 22 and 23. The lever 35 is operated by the hydraulic cylinder 39 formed in front and rear of the body 24 after the welding member 21 is brought into a predetermined position of the body 24 and stopped after the same height. By 36) and the rollers 37 and 38, the welding member 21 is completed centering in the X-axis direction.

한편, 상기와 같이 센터링 완료된 용접부재(21)는 몸체(24)의 전,후방에 설치된 고정구(41)(42)의 유압실린더(40)작동으로 링크(43)가 용접부재(21)의 베이스판(11)을 X축, Z축 방향으로 체결시킴에 따라 용접부재(21)의 고정작업이 완료되고, 이에따라 상기 보조롤러(33)(34)는 유압실린더(31)(32)의 후퇴로 인해 본래 높이로 하강되는 것이며, 고정작업이 완료된 용접부재(21)의 모델에 따라 작업자가 제어장치의 조작판넬(도면에 미도시됨)을 조작함으로서 용접부재(21)가 반입된 몸체(24)에 대해 이송장치(27)(28)의 주행축(46)(47)이 구동되어 정위치에 이송되어지며, 이송장치(27)(28)의 좌,우 조정축(50)(51)에 형성된 용접토치(25)(26)가 용접부재(21)의 용접위치로 이동되어 용접부재(21)의 측면에 밀착되어 이송되는 안내봉(54)(55)이 롤러(52)(53)를 따라 가접부위를 용접하게 되는 것이다.On the other hand, the centering welding member 21 as described above is the link 43 is the base of the welding member 21 by the operation of the hydraulic cylinder 40 of the fasteners 41, 42 installed in front and rear of the body 24 As the plate 11 is fastened in the X-axis and Z-axis directions, the fixing operation of the welding member 21 is completed. Accordingly, the auxiliary rollers 33 and 34 return to the hydraulic cylinders 31 and 32. Due to the descending to the original height, according to the model of the welding member 21 has been fixed, the operator manipulates the operation panel (not shown in the figure) of the control device body 24 into which the welding member 21 is loaded The driving shafts 46 and 47 of the conveying devices 27 and 28 are driven to be conveyed in the correct positions, and the left and right adjusting shafts 50 and 51 of the conveying devices 27 and 28 are driven. The formed welding torches 25 and 26 are moved to the welding position of the welding member 21, and the guide rods 54 and 55 which are brought into close contact with the side surfaces of the welding member 21 carry the rollers 52 and 53. Along the weld Will.

한편, 상기와 같이 주행축(46)(47)의 구동에 의해 몸체(24)의 전,후방향으로 주행하면서 용접부재(21)의 양측을 동시에 용접하는 도중 용접부재(21)의 측면에 밀착되어 이송되면서 용접토치(25)(26)를 안내하는 안내봉(54)(55)의 롤러(52)(53)가 용접부재(21)측면이 베이스판(11)의 정위치에 가접되지 않아 용접토치(25)(26)와 용접부위와의 거리가 일정치 않는 경우, 상기 용접토치(25)(26)가 고정되는헤드부(48)(49)를 이송장치(27)(28)에 탄설시킨 탄성부재(58)가 안내핀 (56)(57)을 따라 수축작용을 하게되어 헤드부(48)(49)가 순간적으로 백이동됨에 따라 용접토치(25)(26)는 용접부재(21)의 용접부위와 일정한 간격을 유지하면서 용접을 할 수 있는 것이다.On the other hand, while traveling in the front and rear directions of the body 24 by the driving of the driving shaft 46, 47 as described above, while contacting both sides of the welding member 21 at the same time close to the side of the welding member 21 The rollers 52 and 53 of the guide rods 54 and 55 for guiding the welding torches 25 and 26 are not welded to the correct position of the base plate 11 while being transported. When the distance between the welding torches 25 and 26 and the welding portion is not constant, the head parts 48 and 49 to which the welding torches 25 and 26 are fixed are installed in the conveying device 27 and 28. As the elastic member 58 is contracted along the guide pins 56 and 57 and the heads 48 and 49 are temporarily moved back, the welding torches 25 and 26 are weld members 21. You can weld while keeping a certain distance from the welding part of).

한편, 용접작업이 완료되면 용접부재(21)의 전,후부를 고정시킨 고정구(41)(42)의 클램핑이 유압실린더(40)의 후퇴로 해제되며, 상기 보조롤러(33)(34)는 다시 파워몰러(22)(23)와 동일한 높이로 상승하게 되며 파워몰러(22)(23)의 구동으로 용접완료된 용접부재(21)는 기어케이스를 가접하는 다음공정의 어셈블리 가접지그(14)로 이송되는 것이다.On the other hand, when the welding operation is completed, the clamping of the fasteners 41 and 42 fixed to the front and rear of the welding member 21 is released by the retraction of the hydraulic cylinder 40, the auxiliary rollers 33 and 34 are The welding member 21 is raised to the same height as the power molars 22 and 23, and the welding member 21 welded by the driving of the power molars 22 and 23 is welded to the assembly case 14. Is transferred to.

상기 적선용접장치는 하부 사이드프레임의 모델변경에 따라 그 크기가 달라지는 경우에는 전방고정구(41)의 일측으로 용접하고자 하는 용접부재(21A)(21B)의 크기에 따라 고정구(41A)(41B)의 위치를 달리 형성함으로서 하부 사이드프레임의 크기에 따라 능동적으로 대처하여 사용범위를 확대시킨 것이다.When the size of the locating welding device is changed according to the change of the model of the lower side frame of the fixture (41A) (41B) according to the size of the welding member (21A) (21B) to be welded to one side of the front fixture 41 By forming the position differently, the use range is expanded by actively coping with the size of the lower side frame.

이상에서 설명한 바와같이 본 발명에 따른 직선용접장치는 하부 사이드프레임에 가접된 베이스판을 용접로봇트로써 자동용접하는 경우 가접된 베이스판의 양측에 대해 주행하면서 동시에 메인용접함으로서 용접시간이 단축되어 제품의 대량생산이 가능해 가격을 낮출수가 있으며, 용접부재를 메인용접하는 도중 용접부재의 가접상태에 따라 용접토치가 용접부위와 일정한 간격을 유지하면서 용접하게 되므로 용접부재가 정확하게 용접되므로 제품의 품질이 더욱 향상되어 제품의 신뢰도가 향상되는 것이다.As described above, the linear welding device according to the present invention, when automatically welding the base plate welded to the lower side frame with the welding robot, while traveling to both sides of the welded base plate while simultaneously welding the main welding time is shortened The mass production is possible, so that the price can be lowered, and the welding torch is welded at regular intervals from the welded part according to the welding state of the welding member during the main welding of the welding member. Product reliability is improved.

Claims (5)

수개의 보강판이 용접된 중형굴삭기의 하부 사이드프레임에 가접된 베이스판을 자동용접함에 있어서, 용접부재(21)를 로딩, 언로딩시키는 수개의 파워몰러(22)(23)가 형성된 몸체 양측에 용접선 추적용 안내롤러(52)(53)를 따라 전,후방으로 주행되는 용접토치(25)(26)를 구비한 이송장치(27)(28)가 형성되고, 상기 용접토치(25)(26)에 용접용 와이어(61)를 공급하는 피이딩부(62)가 이송장치(27)에 형성되며, 상기 파워몰러(22)(23)의 전,후에 용접부재(21)의 반입 및 반출시 승,하강되도록 보조롤러(33)(34)가 설치되어 직선용접장치를 구성하게 되며, 상기 파워몰러(22)(23)에 반입되는 용접부재(21)를 미리 입력된 프로그램에 의해 고정시킨 후 좌,우 양측에 대해 주행하면서 동시에 용접함을 특징으로 하는 중형굴삭기가 하부 사이드프레임 직선용접장치.In the automatic welding of the base plate welded to the lower side frame of the medium excavator with several reinforcing plates welded, welding lines are formed on both sides of the body on which several power molars 22 and 23 for loading and unloading the welding member 21 are formed. A conveying device 27, 28 having a welding torch 25, 26 traveling forward and backward along the tracking guide rollers 52, 53 is formed, and the welding torch 25, 26 is formed. Feeding part 62 for supplying the welding wire 61 to the feeder 27 is formed in the transfer device (27), the power before and after the transfer of the welding member 21 before and after the power molar (22, 23), Auxiliary rollers 33 and 34 are installed to descend so as to form a straight welding device, and after fixing the welding member 21 carried in the power molar 22 and 23 by a pre-programmed left, Mid-sized excavator is a lower side frame linear welding device characterized in that the welding at the same time while traveling on both sides. 제1항에 있어서, 상기 이송장치(27)(28)는 이의 저면에 형성된 피니언(44)(45)과 몸체(24)에 형성된 랙(29)(30)의 구동에 의해 전,후진됨을 특징으로 하는 중형굴삭기의 하부 사이드프레임 직선용접장치.The method of claim 1, wherein the transfer device 27, 28 is moved forward and backward by driving the pinions 44, 45 formed on the bottom surface thereof and the racks 29, 30 formed on the body 24. Low side frame linear welding device for medium excavators. 제1항에 있어서, 상기 이송장치(27)(28)에 용접토치(25)(26)의 각도조정이 가능하며 용접시 Z축 방향으로 센터링되는 헤드부(48)(49)가 형성됨을 특징으로 하는 중형굴삭기의 하부 사이드프레임 직선용접장치.The method of claim 1, wherein the angle of the welding torch 25, 26 is possible to the transfer device 27, 28, and the head portion 48, 49 is centered in the Z-axis direction during welding is formed. Low side frame linear welding device for medium excavators. 제1항에 있어서, 상기 용접토치(25)(26)는 용접부재(21)를 따라 이송되는 안내롤러(52)(53)가 고정된 헤드부(48)(49)가 이송장치(27)(28)에 탄력설치되어 용접부위와 일정한 간격을 유지하게 됨을 특징으로 하는 중형굴삭기의 하부 사이드프레임 직선용접장치.According to claim 1, The welding torch 25, 26 is the head portion 48, 49 is fixed to the guide rollers 52, 53 are conveyed along the welding member 21, the conveying device 27 The lower side frame linear welding device of the medium excavator, characterized in that it is elastically installed on the 28 to maintain a constant distance from the welding site. 제1항에 있어서, 상기 용접부재(21)는 파워몰러(22)(23)사이에 설치된 유압실린더(39)에 의해 링크적으로 작동되는 레버(35)(36)와 롤러(37)(38)에 의해 X축 방향으로 센터링됨을 특징으로 하는 중형굴삭기의 하부 사이드프레임 직선용접장치.2. The roller (35) and the roller (37) (38) according to claim 1, wherein the welding member (21) is linked by a hydraulic cylinder (39) installed between the power molars (22) and (23). The lower side frame linear welding device of the medium excavator, characterized in that the center in the X-axis direction by).
KR1019930003853A 1993-03-13 1993-03-13 Linear welding device of a lower side flame in power shovel KR950003261B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100770532B1 (en) * 2003-08-19 2007-10-25 현대중공업 주식회사 Fit-up machine for ring frame

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100770532B1 (en) * 2003-08-19 2007-10-25 현대중공업 주식회사 Fit-up machine for ring frame

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