KR102127476B1 - Welding system for nut of high tensile strength steel - Google Patents

Welding system for nut of high tensile strength steel Download PDF

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Publication number
KR102127476B1
KR102127476B1 KR1020180152954A KR20180152954A KR102127476B1 KR 102127476 B1 KR102127476 B1 KR 102127476B1 KR 1020180152954 A KR1020180152954 A KR 1020180152954A KR 20180152954 A KR20180152954 A KR 20180152954A KR 102127476 B1 KR102127476 B1 KR 102127476B1
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nut
welding
unit
detection unit
component
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KR1020180152954A
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Korean (ko)
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KR20200065974A (en
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김광용
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조일공업주식회사
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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
    • B23K11/14—Projection welding
    • 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
    • B23K11/002—Resistance welding; Severing by resistance heating specially adapted for particular articles or 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
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/24—Electric supply or control circuits therefor
    • B23K11/25—Monitoring devices
    • B23K11/252—Monitoring devices using digital 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
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/36—Auxiliary equipment
    • 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
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/12—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to investigating the properties, e.g. the weldability, of materials
    • B23K31/125—Weld quality monitoring
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
    • B65G2201/02—Articles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Resistance Welding (AREA)

Abstract

본 개시는 고장력강용 너트 용접 시스템에 관한 것으로, 부품을 적재하여 대기시키는 적재부와, 상기 적재부에 적재된 부품을 이송시켜 용접위치에 위치시키는 이송부와, 상기 용접위치에 위치된 부품에 너트를 공급하는 너트공급부와, 상기 너트를 상기 부품이 용접하는 용접부와, 상기 용접부에 설치되어 상기 용접위치에 위치된 상기 부품과 상기 너트 사이의 갭을 검출하는 검출부 및, 상기 검출부의 신호에 기초하여 상기 용접부에 인가되는 전류와 공압을 제어하는 제어부를 포함한다.The present disclosure relates to a nut welding system for high-tensile strength steel, a loading unit for loading and waiting for a component, a transportation unit for transferring a component loaded in the loading unit to a welding position, and a nut for the component positioned at the welding position. Based on the signal of the nut supplying part, a welding part where the part welds the nut, a detection part installed in the welding part and detecting a gap between the part and the nut located at the welding position, and the detection part signal It includes a control unit for controlling the current and air pressure applied to the welding portion.

Description

고장력강용 너트 용접 시스템{Welding system for nut of high tensile strength steel}Welding system for nut of high tensile strength steel

본 개시는 고장력강 재질의 부품에 너트를 용접할 때 용접불량을 방지할 수 있는 고장력강용 너트 용접 시스템에 관한 것이다.The present disclosure relates to a nut welding system for high tensile steel that can prevent welding failure when welding a nut to a component of high tensile steel material.

자동차에는 철판 재질로 된 각종 부품이 프레스 성형되어 사용되고 있으며, 이러한 철판 재질의 성형부품(이하 '소재'라 칭함)에는 차체에 소재를 고정하거나 또는 소재에 또 다른 부품을 고정하기 위한 용도로 볼트를 체결하기 위한 너트가 용접되고 있다.Various parts made of iron plate materials are press-formed in automobiles, and bolts are used to fix the material to the vehicle body or other parts to the molded parts (hereinafter referred to as'materials'). The nut for fastening is being welded.

통상 소재에 너트를 용접할 때는 볼트가 결합되기 위해 구멍을 먼저 형성하고 구멍이 형성된 위치에 너트를 대고 스폿용접기로 용접을 하는데, 종래 작업자들이 인력으로 소재를 들고 스폿용접기의 하부전극에 구멍을 끼운다음 너트를 구멍 위에 안착시키고 용접기의 상부전극이 하강하여 너트와 소재가 용접이 되도록 하는 방법으로 너트를 용접하였다.Normally, when welding a nut to a material, a hole is first formed for the bolt to be joined, and a nut is placed at the position where the hole is formed, and welding is performed with a spot welder. Next, the nut was seated on the hole, and the upper electrode of the welding machine descended to weld the nut in such a way that the nut and the material were welded.

이러한 종래 너트 용접방법에 의하면 용접을 정해진 위치가 아닌 엉뚱한 위치에 하는 불량이 종종발생하였는데, 소재에는 너트를 용접할 위치가 아닌 위치에도 많은 종류의 구멍이 형성되어 있는바, 작업자가 실수로 정해진 위치의 구멍이 아닌 다른 구멍에 너트를 용접할 가능성이 있기 때문이다.According to such a conventional nut welding method, defects in which the welding is performed in a wrong position rather than a predetermined position often occur. Since many types of holes are formed in a position other than the position where the nut is to be welded, the operator accidentally determines the position. This is because there is a possibility of welding a nut to a hole other than the hole of.

또한, 한 개의 소재에 두 개 이상의 너트를 용접하여야 하는 경우에는 작업자가 이를 정해진 숫자만큼의 너트를 용접하지 않고 일부를 누락하는 불량도 종종 발생하였다.In addition, when two or more nuts need to be welded to a single material, a defect in which a worker does not weld a predetermined number of nuts and omits a part often occurs.

그리고 종래의 인력에 의한 용접방법에 의하면 당연히 그 생산성이 낮고 작업자가 철판소재를 잡고 용접기에 안착시키는 상태와 너트를 구멍 위에 안착시키는 상태에 따라 용접 상태가 매우 불균일한 단점도 있다 할 것이다.And, according to the welding method by the conventional manpower, of course, the productivity is low, and the welding state is very uneven depending on the state where the worker holds the iron plate material and seats the welding machine and the nut seats on the hole.

본 개시는 용접의 균일성과 불량 방지 등의 기능을 갖도록 하여 너트가 용접되는 부품의 품질과 생산성을 향상시킬 수 있는 고장력강용 너트 용접 시스템을 제공하는 것을 목적으로 한다.An object of the present disclosure is to provide a nut welding system for high-tensile steel capable of improving the quality and productivity of parts to which a nut is welded by having functions such as uniformity of welding and defect prevention.

실시예에 의한 고장력강용 너트 용접 시스템은 부품을 적재하여 대기시키는 적재부와, 상기 적재부에 적재된 부품을 이송시켜 용접위치에 위치시키는 이송부와, 상기 용접위치에 위치된 부품에 너트를 공급하는 너트공급부와, 상기 너트를 상기 부품이 용접하는 용접부와, 상기 용접부에 설치되어 상기 용접위치에 위치된 상기 부품과 상기 너트 사이의 갭을 검출하는 검출부 및, 상기 검출부의 신호에 기초하여 상기 용접부에 인가되는 전류와 공압을 제어하는 제어부를 포함한다.The nut welding system for high-tensile steel according to an embodiment includes a loading part that loads and waits for a part, a transportation part that transfers a part loaded in the loading part to a welding position, and supplies a nut to a part located at the welding position. A nut supply unit, a welding unit where the component welds the nut, a detection unit installed in the welding unit to detect a gap between the component located at the welding position and the nut, and the welding unit based on signals from the detection unit It includes a control unit for controlling the applied current and air pressure.

또한, 검출부는 상기 용접위치에 위치된 부품의 두께를 검출하는 두께감지부를 더 포함하며, 상기 제어부는 상기 부품의 두께에 따라 상기 용접부에 인가되는 전류와 공압을 제어하는 것이 바람직하다.In addition, the detection unit further includes a thickness detection unit that detects the thickness of the component located at the welding position, and the control unit preferably controls current and air pressure applied to the welding unit according to the thickness of the component.

또한, 상기 검출부는 상기 부품에 너트가 누락된 것을 감지하는 너트감지부를 더 포함하며, 상기 제어부는 상기 너트감지부의 신호에 기초하여 경고음을 발생함과 동시에 상기 너트공급부 및 상기 용접부의 작동이 정지되도록 제어하는 것이 바람직하다.In addition, the detection unit further includes a nut detection unit that detects that the nut is missing from the component, and the control unit generates a warning sound based on the signal of the nut detection unit and stops operation of the nut supply unit and the welding unit. It is desirable to control.

또한, 상기 용접부는 용접시 발생되는 불꽃의 온도와 색깔을 검출하는 비젼센서부를 더 포함하며, 상기 제어부는 상기 비젼센서부로부터 검출된 정보를 미리 입력된 정보와 비교하여 용접불량 유무를 판단하는 것이 바람직하다.In addition, the welding unit further includes a vision sensor unit that detects the temperature and color of the spark generated during welding, and the control unit compares the information detected from the vision sensor unit with previously inputted information to determine whether there is a welding defect. desirable.

전술한 구성을 갖는 실시예에 따르면, 용접의 균일성과 불량 방지 등의 기능을 갖도록 하여 너트가 용접되는 부품의 품질과 생산성을 향상시킬 수 있는 효과가 있다.According to the embodiment having the above-described configuration, it is possible to improve the quality and productivity of the parts to which the nut is welded by having functions such as uniformity of welding and defect prevention.

도 1은 본 개시의 실시예에 따른 고장력강용 너트 용접 시스템을 개략적으로 도시하는 구성도.1 is a block diagram schematically showing a nut welding system for high-tensile steel according to an embodiment of the present disclosure.

본 개시의 실시예를 첨부도면을 참조하여 보다 상세히 설명하기로 한다. 이과정에서 도면에 도시된 선들의 두께나 구성요소의 크기 등은 설명의 명료성과 편의상 과장되게 도시되어 있을 수 있다.Embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. In this process, the thickness of the lines or the size of components shown in the drawings may be exaggerated for clarity and convenience.

또한, 후술되는 용어들은 본 개시에서의 기능을 고려하여 정의된 용어들로서 이는 사용자, 운용자의 의도 또는 관례에 따라 달라질 수 있다. 그러므로, 이러한 용어들에 대한 정의는 본 명세서 전반에 걸친 내용을 토대로 하여 내려져야 할 것이다.In addition, terms to be described later are terms defined in consideration of functions in the present disclosure, which may vary according to a user's or operator's intention or practice. Therefore, definitions of these terms should be made based on the contents throughout this specification.

도 1은 본 개시의 실시예에 따른 고장력강용 너트 용접 시스템을 개략적으로 도시하는 구성도이다.1 is a configuration diagram schematically showing a nut welding system for high-tensile steel according to an embodiment of the present disclosure.

도 1을 참조하면, 실시예에 따른 고장력강용 너트 용접 시스템(100)은 적재부(110), 이송부(120), 너트 공급부(130), 용접부(140), 검출부(150), 제어부(160)로 구성된다.Referring to FIG. 1, the nut welding system 100 for high-tensile steel according to an embodiment includes a loading unit 110, a transport unit 120, a nut supply unit 130, a welding unit 140, a detection unit 150, and a control unit 160 It consists of.

적재부(110)는 부품을 적재하여 대기시는 것으로서, 부품의 형태를 감안하여 부품이 흐트러지지 않고 적재될 수있는 형상을 가진다.The loading unit 110 is to wait by loading a component, and has a shape in which the component can be loaded without being disturbed in consideration of the shape of the component.

이송부(120)는 적재부()에 적재된 부품을 용접위치로 이송시키는 것으로서, 부품을 파지할 수 있는 클램프(미도시) 또는 진공흡착장치(미도시)를 가진다. 또한, 이송부(120)는 용접위치에서 용접작업이 완료된 부품을 배출하는 기능도 가진다.The transfer unit 120 is to transfer the components loaded on the loading portion () to a welding position, and has a clamp (not shown) or a vacuum adsorption device (not shown) that can grip the components. In addition, the transfer unit 120 also has a function of discharging a part where a welding operation is completed at a welding position.

너트공급부(130)는 용접위치에 위치된 부품에 너트를 공급하는 것으로서, 진동피더방식이 사용된다.The nut supply unit 130 supplies a nut to a component located at a welding position, and a vibration feeder method is used.

용접부(140)는 용접위치에 위치된 부품에 너트를 용접하는 것으로, 하부전극과 상부전극을 갖는 프로젝션 용접기가 사용된다.The welding part 140 welds a nut to a component located at a welding position, and a projection welding machine having a lower electrode and an upper electrode is used.

또한, 용접부(140)는 용접시 발생되는 불꽃의 온도와 색깔을 검출하는 비젼센서부(142)를 더 포함할 수 있다.In addition, the welding unit 140 may further include a vision sensor unit 142 for detecting the temperature and color of the spark generated during welding.

검출부(150)는 용접부(140)에 설치되어 용접위치에 위치된 부품과 너트 사이의 갭을 검출한다.The detection unit 150 is installed in the welding unit 140 to detect the gap between the component and the nut located at the welding position.

또한, 검출부(150)는 용접위치에 위치된 부품의 두께를 검출하는 두께감지부(152)와, 부품에 너트가 누락된 것을 감지하는 너트감지부(154)를 더 포함할 수 있다.In addition, the detection unit 150 may further include a thickness detection unit 152 for detecting the thickness of the component located at the welding position, and a nut detection unit 154 for detecting that a nut is missing from the component.

제어부(160)는 검출부(150)의 신호에 기초하여 용접부(140)에 인가되는 전류와 공압을 제어한다. 즉, 제어부(160)는 검출부(150)로부터 검출된 부품과 너트 사이의 갭에 따라 용접부(140)에 공급되는 전류 및 공압을 미리 입력된 정보에 따라 공급되도록 제어한다.The control unit 160 controls the current and air pressure applied to the welding unit 140 based on the signal from the detection unit 150. That is, the control unit 160 controls the current and air pressure supplied to the welding unit 140 according to the gap between the part and the nut detected from the detection unit 150 to be supplied according to previously input information.

또한, 제어부(160)는 상술한 두께감지부(152), 너트감지부(154), 비젼센서부(142)로부터 획득되는 신호에 기초하여 이송부(120), 너트공급부(130), 용접부(140)를 제어한다.In addition, the control unit 160 based on the signals obtained from the above-described thickness detection unit 152, nut detection unit 154, vision sensor unit 142, the transfer unit 120, the nut supply unit 130, the welding unit 140 To control.

이와 같은 제어부(160)는 두께감지부(152)로부터의 신호에 기초하여 용접부(140)에 인가되는 전류와 공압을 제어하며, 너트감지부(154)의 신호에 기초하여 경고음을 발생함과 동시에 너트공급부(130) 및 용접부(140)의 작동이 정지되도록 제어한다.The control unit 160 controls the current and air pressure applied to the welding unit 140 based on the signal from the thickness sensing unit 152, and generates a warning sound based on the signal from the nut sensing unit 154, and the nut. The operation of the supply unit 130 and the welding unit 140 is stopped.

또한, 제어부(160)는 비젼센서부(142)로부터 검출된 정보를 미리 입력된 정보와 비교하여 용접불량 유무를 판단한다. In addition, the control unit 160 compares the information detected by the vision sensor unit 142 with information previously input to determine whether or not welding defects are present.

이상 본 개시의 실시예를 첨부도면을 참조하여 설명하였지만, 당해 기술분야에 숙련된 사람은 하기의 특허청구범위에 기재된 본 개시의 기술적 사상으로부터 벗어나지 않는 범위 내에서 본 개시를 다양하게 수정 및 변경할 수 있음을 이해할 수 있을 것이다.Although the embodiments of the present disclosure have been described above with reference to the accompanying drawings, those skilled in the art can variously modify and change the present disclosure without departing from the technical spirit of the present disclosure as set forth in the claims below. You will understand that there is.

110; 적재부
120; 이송부
130; 너트 공급부
140; 용접부
142; 비젼센서부
150; 검출부
152; 두께감지부
154; 너트감지부
160; 제어부110; Loading part
120; Transport
130; Nut supply
140; Weld
142; Vision sensor unit
150; Detector
152; Thickness detection unit
154; Nut detection unit
160; Control

Claims (5)

부품을 적재하여 대기시키는 적재부;
상기 적재부에 적재된 부품을 이송시켜 용접위치에 위치시키는 이송부;
상기 용접위치에 위치된 부품에 너트를 공급하는 너트공급부;
상기 너트를 상기 부품이 용접하는 용접부;
상기 용접부에 설치되어 상기 용접위치에 위치된 상기 부품과 상기 너트 사이의 갭을 검출하는 검출부; 및,
상기 검출부의 신호에 기초하여 상기 용접부에 인가되는 전류와 공압을 제어하는 제어부;를 포함하되,
상기 검출부는 상기 용접위치에 위치된 부품의 두께를 검출하는 두께감지부를 더 포함하며,
상기 제어부는 상기 부품의 두께에 따라 상기 용접부에 인가되는 전류와 공압을 제어하고,
상기 검출부는 상기 부품에 너트가 누락된 것을 감지하는 너트감지부를 더 포함하며,
상기 제어부는 상기 너트감지부의 신호에 기초하여 경고음을 발생함과 동시에 상기 너트공급부 및 상기 용접부의 작동이 정지되고, 상기 너트감지부의 신호의 기초하여 경고등을 점멸하도록 제어하고,
상기 용접부는 용접시 발생되는 불꽃의 온도와 색깔을 검출하는 비젼센서부를 더 포함하며,
상기 제어부는 상기 비젼센서부로부터 검출된 정보를 미리 입력된 정보와 비교하여 용접불량 유무를 판단하는 고장력강용 너트 용접 시스템.A loading unit for loading and waiting the parts;
A conveying part for conveying the parts loaded in the loading part and placing them in a welding position;
A nut supply unit supplying a nut to a component located at the welding position;
A welding part for the part to weld the nut;
A detection unit installed in the welding unit to detect a gap between the component and the nut located at the welding position; And,
Includes a control unit for controlling the current and air pressure applied to the welding portion based on the signal of the detection unit,
The detection unit further includes a thickness detection unit for detecting the thickness of the component located at the welding position,
The control unit controls the current and air pressure applied to the welding part according to the thickness of the component,
The detection unit further includes a nut detection unit for detecting that the nut is missing from the component,
The control unit controls to generate a warning sound based on the signal of the nut detection unit, stop operation of the nut supply unit and the welding unit, and blink a warning light based on the signal of the nut detection unit.
The welding portion further includes a vision sensor portion for detecting the temperature and color of the spark generated during welding,
The control unit compares the information detected by the vision sensor unit with previously inputted information to determine whether there is a welding defect or not. 삭제delete 삭제delete 삭제delete 삭제delete
KR1020180152954A 2018-11-30 2018-11-30 Welding system for nut of high tensile strength steel KR102127476B1 (en)

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JP3207062B2 (en) * 1994-11-07 2001-09-10 株式会社電元社製作所 Control method and device for electric pressurized resistance welding machine
KR20100102935A (en) * 2009-03-12 2010-09-27 대일공업주식회사 System for preventing omission of welding spotting
KR101491477B1 (en) * 2013-01-10 2015-02-10 (주)일지테크 Apparatus for preventing omission of nut and method therof

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KR101258170B1 (en) * 2013-01-31 2013-05-02 주식회사 현성오토텍 Welded state image detection apparatus of spot welding robot

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102272305B1 (en) * 2020-10-14 2021-07-01 함만주 Mold manufacture system

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