WO2018105853A1 - Appareil d'inspection de becs de soudage de pistolets de soudage par points - Google Patents

Appareil d'inspection de becs de soudage de pistolets de soudage par points Download PDF

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Publication number
WO2018105853A1
WO2018105853A1 PCT/KR2017/009210 KR2017009210W WO2018105853A1 WO 2018105853 A1 WO2018105853 A1 WO 2018105853A1 KR 2017009210 W KR2017009210 W KR 2017009210W WO 2018105853 A1 WO2018105853 A1 WO 2018105853A1
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WO
WIPO (PCT)
Prior art keywords
welding tip
tip
welding
spot welding
camera module
Prior art date
Application number
PCT/KR2017/009210
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English (en)
Korean (ko)
Inventor
정명환
장주용
전현환
Original Assignee
오토아이티(주)
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 오토아이티(주) filed Critical 오토아이티(주)
Publication of WO2018105853A1 publication Critical patent/WO2018105853A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
    • G01N2021/8887—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges based on image processing techniques
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/026—Specifications of the specimen
    • G01N2203/0296—Welds

Definitions

  • the present invention is a welding tip inspection device of a spot welding gun, and more particularly, even if the welding tip conveyed by the welding tip transfer gun is inserted and pressed with an error of several millimeters at the reference insertion position, the parts are not damaged and the degree of contamination of the welding tip is
  • the present invention relates to a welding tip inspection apparatus for spot welding guns that can be inspected.
  • spot welding is a kind of resistance welding technique, in which two or three sheets of metal sheet for welding are placed between a pair of spot welding guns and pressurized with a pair of spot welding guns. The current is applied to the spot welding gun and the metal sheet is welded using the resistance heat generated therefrom.
  • spot welding also called spot welding, has a short welding time and is widely used for thin plate welding.
  • spot welding when joining metal, part of the base material is buried at the end of the spot welding gun after welding, which makes the spot welding gun unusable for a long time.
  • a spot welding gun is attached to the end of the spot welding gun to protect the spot welding gun.
  • the condition of the weld tip is important for good quality welding to be performed. However, when welding 100 to 200 times, the tip of the welding tip is contaminated and cannot be used. At this time, the tip of the welding tip is polished using an Auto Tip Dressor (ATD). Using a dresser (ATD), the tip of the contaminated welding tip is scraped off and inspected by the welding tip inspection device to see if there is any foreign material on the end of the welding tip. If the inspection is bad, polish the welding tip by transferring the welding tip to the dresser (ATD) with the welding tip transfer gun (GUN). Typically, the dresser (ATD) and the welding tip inspection device is installed in one package.
  • ATD Auto Tip Dressor
  • the welding tip inspection apparatus is known an inspection apparatus using a color sensor and an inspection apparatus using a camera.
  • the inspection apparatus using the color sensor determines whether the weld tip is contaminated by measuring the spectrum of the light reflected back to the tip of the weld tip after irradiating the white LED. Although the measurement speed was fast, there was a problem that the measurement was not performed properly depending on environmental parts such as the distance and angle of the welding tip.
  • the spot welding electrode inspection apparatus in the inspection apparatus using the camera disclosed in Korean Patent No. 10-1385922 (name of the invention: spot welding electrode inspection apparatus), as shown in FIG. Determine if the tip section is contaminated.
  • the spot welding electrode inspection apparatus according to Korean Patent No. 10-1385922 is attached to the mirror 8 in a state in which an electrode (welding tip) is fixed to a fixing hole 72a of the electrode fixing plate 72.
  • the cross section of the electrode (welding tip) reflected and projected is photographed by the CCD camera 91 supported by the bases 92 and 93 for the plate-shaped camera.
  • the conventional spot welding electrode inspection device is implemented to inspect the welding tip using a camera while the welding tip transfer gun conveys the welding tip and is inserted into the fixing hole 72a and pressurized.
  • the welding tip transfer gun inserts or pressurizes the welding tip in a state where the welding tip is not exactly aligned with the fixing hole 72a, the parts are damaged and the inspection is not made.
  • the present invention has been proposed in the background as described above, even if the welding tip conveyed by the welding tip transfer gun is inserted and pressed with an error of several millimeters at the reference insertion position, the spot is not damaged and the contamination of the welding tip can be inspected.
  • the present invention also relates to a welding tip inspection apparatus for a spot welding gun, which enables a user to quickly and conveniently handle replacement work of a camera module.
  • the spot welding gun welding tip inspection apparatus is a plurality of camera illumination light source, a camera module for photographing the tip of the welding tip, and reflects the light reflected from the welding tip to the camera module
  • a pressure plate having a first through portion through which a welding tip to be inspected passes;
  • a center guide part in which a mounting part on which the pressure plate is mounted is formed;
  • a protective case having an insertion portion for inserting a welding tip at a position corresponding to the first through hole of the pressing plate;
  • the housing is detachably coupled to the main circuit board, and includes a housing having a second through part connected to the first through part of the pressing plate, and a mounting part to which the pressing plate and the center guide part are seated.
  • the pressure plate of the welding tip inspection device of the spot welding gun according to the present invention is formed with a first light passing portion through which the light reflected from the welding tip passes, the housing is formed in the second penetrating portion and radiated from the light source for camera illumination welding tip The second light passing portion through which the light reflected from is passed is formed.
  • the main circuit board of the spot welding gun welding tip inspection apparatus is formed with a camera module connecting portion, the housing is an insertion portion inserted into the circuit board mounted with the camera module at a position corresponding to the camera module connecting portion of the main circuit board It is characterized by being formed.
  • the welding tip inspection apparatus of the spot welding gun according to the present invention is coupled to the housing so as to be attached to the top, it is characterized in that it further comprises a protective member to be rotated when moving forward by the air cylinder to protect the insertion portion of the protective case.
  • the present invention even if the welding tip conveyed by the welding tip transfer gun is inserted and pressed with an error of several millimeters at the reference insertion position, the parts are not damaged and the contamination of the welding tip can be inspected.
  • the user can quickly and conveniently handle the replacement of the camera module.
  • FIG. 1 is an exemplary view for explaining the welding tip inspection apparatus of the spot welding gun according to the present invention.
  • Figure 2a, Figure 2b is an exemplary view for explaining the protection member for the welding tip inspection device of the spot welding gun according to the present invention.
  • FIG. 3 is an exploded view illustrating components of a welding tip inspection apparatus for a spot welding gun according to the present invention.
  • Figure 4 is an embodiment showing a cross section of the welding tip inspection device of the spot welding gun according to the present invention.
  • 5A and 5B are exemplary views for explaining the position change of the pressure plate of the welding tip inspection device of the spot welding gun according to the present invention.
  • FIG. 6 is an exemplary view for explaining a process of replacing the camera module of the welding tip inspection device of the spot welding gun according to the present invention.
  • Figure 7 shows the process of photographing the weld tip cross section through the camera module and reflector used in the welding tip inspection device of the spot welding gun according to the present invention.
  • FIG 8 is an exemplary view for explaining a process of determining whether the weld tip cross-section through the image processing by photographing the weld tip cross-section with the camera module.
  • FIG. 9 is an exemplary view for explaining a welding tip inspection device of a conventional spot welding gun.
  • FIG. 1 is an exemplary view for explaining a welding tip inspection device of the spot welding gun according to the present invention
  • Figures 2a, 2b is an exemplary view for explaining a protective member for the welding tip inspection device of the spot welding gun according to the present invention
  • 3 is an exploded view illustrating components of a welding tip inspection device for a spot welding gun according to the present invention
  • FIG. 4 is an embodiment showing a cross section of the welding tip inspection device for a spot welding gun according to the present invention.
  • the welding tip inspection apparatus 100 of the spot welding gun according to the present invention as shown in Figure 1, Figure 2a, Figure 2b, Figure 3, Figure 4, PLC cable port 110 and Ethernet port 120 and the protective case Including the protection member 160 to block the foreign matter through the 130, 170, the upper housing 140, the lower housing 150 and the insertion portion (131, 171) of the protective case (130, 170) Is implemented.
  • the protection member 160 is detachably coupled to the upper housing 140 and the lower housing 150.
  • the protection member 160 includes a cover part 162 that opens and closes the insertion parts 131 and 171 of the protection cases 130 and 170 when the hinge member is rotated by the air cylinder 161.
  • the welding tip inspection apparatus 100 of the spot welding gun according to the present invention is formed by protruding from the protective case (130, 170) to protect the camera module (reference numeral 330, 360 of Figure 3) and reflector (reference numeral 340, of Figure 3) Protrusions 135 and 175 to which the 370 is mounted are formed.
  • the reflectors 340 and 370 are shown in front of the lenses of the camera modules 330 and 360 in FIG. 3, they are actually mounted on the inner surfaces of the protrusions 135 and 175 as shown in FIG. 4.
  • the internal components of the welding tip inspection apparatus for the spot welding gun according to the present invention are welded with the main circuit board 350 and the first through parts 311 and 391 through which the welding tip to be inspected passes.
  • a lower housing 150 and center guide parts 320 and 380 are welded with the main circuit board 350 and the first through parts 311 and 391 through which the welding tip to be inspected passes.
  • a lower housing 150 and center guide parts 320 and 380 are welded with the main circuit board 350 and the first through parts 311 and 391 through which the welding tip to be inspected passes.
  • the center guide parts 320 and 380 are provided with mounting parts 321 and 381 to which the pressure plates 310 and 390 are mounted.
  • the center guide parts 320 and 380 are made of a material having elastic force (eg, rubber).
  • the center guides 320 and 380 prevent the parts from being damaged even if the welding tip conveyed by the welding tip transfer gun is inserted and pressed with an error of several millimeters at the reference insertion position.
  • the center guide parts 320 and 380 may be manufactured in a mold using, for example, urethane material.
  • the upper housing 140 and the lower housing 150 are detachably coupled.
  • the upper housing 140 has a seating portion 141 on which the pressing plate 310 and the center guide portion 320 are seated, and a second through portion 142 connected to the first through portion 311 of the pressing plate 310. And a second light passing portion 143 extending from the second through portion 142 and passing through the light emitted from the camera illumination light source (reference numeral 391 of FIG. 4) and reflected from the welding tip.
  • the lower housing 150 has a seating portion in which the center guide portion 380 is seated, and a second penetration portion 152 connected to the first penetration portion 391 of the pressing plate 390, similarly to the upper housing 140. And a second light passing portion 153 extending from the second through portion 152 and passing through the light emitted from the camera illumination light source (reference numeral 351 of FIG. 4) and reflected from the welding tip.
  • the main circuit board 350 is provided with a plurality of camera illumination light sources 351 around the inspection space, and receives and drives a display control signal corresponding to the welding tip contamination degree determination result from the main circuit module. 352).
  • the display device 352 is implemented as a three-color LED element, and if the pollution degree determination result is 'normal' green, 'caution' is displayed yellow, 'bad' is displayed red, so that the operator intuitively from outside The contamination level of the test can be confirmed.
  • the main circuit board 350 is provided with a camera module connection part 353 to which the circuit board on which the camera module including the lens module and the image sensor is mounted is detachably coupled.
  • the upper housing 140 and the lower housing 150 are formed with insertion portions 144 and 154 into which a circuit board on which the camera module is mounted is inserted at a position corresponding to the camera module connecting portion 353 of the main circuit board 350. . Accordingly, the user can quickly and conveniently handle the replacement of the camera module.
  • the welding tip includes the insertion parts 131 and 171 of the protective cases 130 and 170 ⁇ the first through parts 311 and 391 of the pressing plates 310 and 390 ⁇ the upper housing 140 and the lower housing ( Passes second through portions 142 and 152 of 150 sequentially.
  • the protrusions 135 and 175 protrude from the protective cases 130 and 170 to protect the camera modules 330 and 360.
  • Reflectors 340 and 370 are mounted on inner surfaces of the protrusions 135 and 175.
  • the center guide part 320 has a deformation distance of ⁇ 3 mm, and when the welding tip is inserted into the first through part 311 of the pressure plate 310 by mounting the center guide part 320 on the pressure plate 310. The position of the pressing plate 310 is not changed more than ⁇ 3mm.
  • FIG. 6 is an exemplary view for explaining a process of replacing the camera module of the welding tip inspection device of the spot welding gun according to the present invention.
  • the protrusion 135 is formed to protrude from the protective case 130 to protect the camera module 330.
  • the reflector 340 is mounted on the inner side surface of the protrusion 135.
  • the upper housing 140 is equipped with a pressing plate 310 and the center guide portion 320.
  • the protective case 130 and the upper housing 140 are detachably coupled by the coupling member 611.
  • the welding tip inspection apparatus of the spot welding gun according to the present invention as shown in Figure 7, the image of the cross-section of the pair of welding tips (11, 12) through the reflector (340, 370) and the camera module (330, 360) Can be obtained.
  • a pair of welding tips 11 and 12 are implemented, for example, 20 mm apart.
  • the process of determining whether the weld tip cross section is contaminated through the image processing by photographing the weld tip cross section according to the present invention is as shown in FIG. 8, the image acquisition step (S811), the channel division step (S812), ROI selection step (S813), projection conversion step (S814), automatic contrast enhancement step (S815), edge detection step (S816), pressure plate inner diameter detection step (S817), welding tip section detection step (S818) , And pollution degree detection step (S819).
  • Image acquisition step (S811) is a step of receiving an RGB image for the tip tip of the welding from the camera module.
  • the RGB image can be converted into YCbCr image including luminance information, blue information and red information to omit unnecessary color information review in the process of analyzing the contamination degree of the welding tip. Can be.
  • the RGB image is input and then converted into a YCbCr image.
  • the present disclosure is not necessarily limited thereto, and the YCbCr image may be directly input from the camera module.
  • the YCbCr image includes luminance information to detect a tip region based on each luminance information, blue information, and red information, and to detect a front end surface using only the Y image including the luminance information. It can be separated into a Y image, a Cb image including luminance information and blue information, and a Cr image including luminance information and red information.
  • a weld tip region may be detected by extracting an area corresponding to preset tip color information from the YCbCr image, and designate the detected weld tip region as the ROI.
  • the projection conversion step S814 is a step of projecting a point in the three-dimensional space onto the image plane.
  • the welding tip binarization data may be acquired by binarizing the welding tip image based on a preset reference value.
  • the welding tip binarization data may be acquired by mapping a region lower than the preset reference value to 0 in the welding tip image and mapping the region higher than the preset reference value to 255.
  • the edge detection step S816 may extract the weld tip edge based on the weld tip binarization data. For example, by detecting a boundary area between 0 and 255 based on the welding tip binarization data, an outer portion of the shape of the welding tip, that is, an edge of the welding tip may be extracted.
  • the pressing plate inner diameter detecting step S817 is a step of detecting a region corresponding to the first penetrating portion 311 of the pressing plate (reference numeral 310 of FIG. 3).
  • an ellipse detecting step of detecting an ellipse may be performed based on the edge information detected in the edge detecting step and the shape information of the welding tip region.
  • the ellipse may be detected using a known Hough based Ellipse detection Algorithm.
  • the ellipse detection step detects a plurality of ellipses, and compares the diameter of each detected ellipse with the height ratio of the detected tip area with a preset reference ratio to determine an ellipse included in the allowable range.
  • a front end face determination step of determining the front end face may be performed. In this case, the diameter of each detected ellipse and the height ratio of the detected region of interest are compared with a preset reference ratio to determine an ellipse having the smallest error among the ellipses included within the allowable range of the reference ratio among the plurality of ellipses as the cross section. Can be.
  • the contamination level of the front end surface may be measured by comparing the color information of each pixel in the detected front end surface with preset reference color information.
  • the contamination level detecting step S819 may include a pixel counting step and a contamination level measuring step. The total number of pixels located inside the edge detected from the divided tip region detection image may be counted, and the black pixels having low luminance among the pixels located inside the edge may be detected as dirty pixels and then counted. By dividing the counted number of contamination pixels by the total number of pixels for the tip end surface, the contamination rate for the tip end surface of the welding tip can be calculated and the degree of contamination can be measured according to the level value of each contamination pixel.
  • the technique according to the present specification is available in a welding tip inspection device.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
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  • General Health & Medical Sciences (AREA)
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  • Computer Vision & Pattern Recognition (AREA)
  • Signal Processing (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

La présente invention concerne un appareil pour inspecter les becs de soudage de pistolets de soudage par points, l'appareil étant apte à inspecter le niveau de contamination des becs de soudage, sans endommager les éléments, même si les becs de soudage transférés par les pistolets à transfert de bec de soudage sont insérés et pressés dans des positions d'insertion de référence avec une erreur de quelques millimètres.
PCT/KR2017/009210 2016-12-05 2017-08-23 Appareil d'inspection de becs de soudage de pistolets de soudage par points WO2018105853A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2016-0164296 2016-12-05
KR1020160164296A KR101926635B1 (ko) 2016-12-05 2016-12-05 스폿 용접건의 용접팁 검사장치

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WO2018105853A1 true WO2018105853A1 (fr) 2018-06-14

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KR102199505B1 (ko) 2019-06-13 2021-01-06 아진산업(주) 어안 카메라에 기반한 용접팁 오염도 검사 장치 및 방법
KR102420519B1 (ko) * 2020-05-15 2022-07-15 (주)엔정보기술 선박 용접부용 60GHz 레이더 비파괴 검사장치

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009285725A (ja) * 2008-06-02 2009-12-10 Toyota Auto Body Co Ltd 溶接電極検査装置及び溶接電極検査方法
US20140333756A1 (en) * 2012-02-01 2014-11-13 Keylex Corporation Electrode inspection apparatus for spot welding
KR20160066086A (ko) * 2014-12-01 2016-06-10 아진산업(주) 스폿 용접건의 용접팁 검사장치
JP2016525690A (ja) * 2013-08-01 2016-08-25 シンテルレーゲ・エス．アール．エル．ＳＩＮＴＥＲＬＥＧＨＥ Ｓ．ｒ．ｌ． 溶接ガン電極の品質を検出するための光学デバイス
KR20160113792A (ko) * 2015-03-23 2016-10-04 주식회사휴비스 스팟용접용 전극 팁 확인 장치

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112010004153B4 (de) 2009-10-27 2017-04-27 Keylex Corp. Vorrichtung zur inspektion von elektroden zum punktschweissen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009285725A (ja) * 2008-06-02 2009-12-10 Toyota Auto Body Co Ltd 溶接電極検査装置及び溶接電極検査方法
US20140333756A1 (en) * 2012-02-01 2014-11-13 Keylex Corporation Electrode inspection apparatus for spot welding
JP2016525690A (ja) * 2013-08-01 2016-08-25 シンテルレーゲ・エス．アール．エル．ＳＩＮＴＥＲＬＥＧＨＥ Ｓ．ｒ．ｌ． 溶接ガン電極の品質を検出するための光学デバイス
KR20160066086A (ko) * 2014-12-01 2016-06-10 아진산업(주) 스폿 용접건의 용접팁 검사장치
KR20160113792A (ko) * 2015-03-23 2016-10-04 주식회사휴비스 스팟용접용 전극 팁 확인 장치

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KR101926635B1 (ko) 2018-12-07

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