1302860 97.08.22第95149118號專利說明書及申請專利範圍修正本。 七、指定代表圖·· (一) 本案指定代表圖為：第（2 )圖。 (二) 本代表圖之元件符號簡單說明·· 1 基座 111定位架 113固定架 13 工件平台 21作動桿 23 活動塊 232導引孔 312第二結合部 4 動力組 5 焊接電極組 52 第二電極頭 11 立柱 112支撐桿 12 定位平台 2 線性電磁閥 22壓力感知器 231容置槽 3 光學尺 32 彈性元件 41 致動桿 51 第一電極頭 6 焊接工件 八、本案若有化學式時，請揭示最能顯示發明特徵的化學 式： 1302860 97· 08· 22第95149118號專利說明書及申請專利範圍修正本。 九、發明說明： 【發明所屬之技術領域】 Κ 本發明係關於一種微型電阻點焊裝置，特別是關於 藉由一光學尺及一壓力感知器檢測一焊接工件於進行微型 電阻點焊過程中之焊接壓力及電極位移量等參數，以便提 升焊接品質之微型電阻點焊裝置。 【先前技術】 目前常見之大型電阻點焊線上檢測技術，主要係包 含檢測電氣參數及機械參數二大類。該電氣參數係為一焊 接工件之接觸面的一電壓降，以及通過該焊接工件之一焊 接電流，藉由計算該電壓降及焊接電流所獲得之焊接工件 間的動態電阻變化，可預測並控制焊接品質。該機械參數 係為-電極麟加予該焊接卫件之-焊接壓力及—電極位 移1,該焊接壓力可用以顯示該電極頭對該焊接工件表面 之衝擊力，該電極位移量則為該電極頭之下壓行程，藉由 該焊接壓力及電極位移量檢測之檢測結果，可得知該焊接 工件是否具有安裝不當之情形。因此，習知大型電阻點烊 線上檢測技術主要係透過檢測上述電氣參數及機械參數以 維持其焊接品質。 惟以目别電阻點焊之線上檢測技術而言，並無針對 微型」電阻轉技術之應用。*於微型電阻點焊之焊接 工件的尺寸相對m，且相轉接參數對烊接品質之影響 备度亦與大型電阻點焊有顯著不同，故上述習知大型電随 點焊線上檢測技術並不適驗微型電隨焊。另外，現今 1302860 97.08.22帛95149118號專利說明書及申請專利範圍修正本。 產業界於生產線上針對微型電阻點焊所使用之線上檢測方 •式，其係普遍依賴專業資深人員以目視f =寸形狀、焊接點表面色度及焊接較花噴鱗形來判斷 焊接品質。然而’以目視法線上檢測微型電阻點焊過程， 並無法達到精確檢測焊接品質之目的。基於上述原因，有 錢進-步研發出可適用於微型電阻點焊技術的線上裝置 ，以更進一步維持微型電阻點焊之焊接品質。 有鑑於此，本發明改良上述f知大型電阻點焊之線 上檢測技術無法應用於檢測微型電阻點焊之焊接品質的缺 點，其係藉由一線性電磁閥控制一焊接電極組對一焊接工 件進行微型電阻點焊作業，並於微型電阻點焊過程中，利 用一光學尺及一壓力感知器檢測其焊接壓力及電極位移量 等機械參數，且配合以一電壓及電流量測單元檢測一焊接 電流及一電壓降等電氣參數，以便依據前述各動態焊接參 數，建立可直接預測焊點強度的微型電阻點焊系統，因此 能提升其焊接品質。 【發明内容】 本發明之主要目的係提供一種微型電阻點焊裝置， 其係藉由一線性電磁閥控制一焊接電極組對一焊接工件進 行微型電阻點焊作業，以便利用一光學尺、一壓力感知器 及一電壓及電流量測單元檢測各相關焊接參數，使得本發 明具有提升微型電阻點焊之焊接品質的功效。 根據本發明之微型電阻點焊裝置，其包含一基座、 一線性電磁閥、一光學尺、一動力組及一焊接電極組。該 1302860 97· 08· 22第95149118號專利說明書及申請專利範圍修正本〃 線性電磁閥設置於該基座之上方且具有一作動桿，該作動 桿設有一壓力感知器及一活動塊，該光學尺設有一位移量 檢測件以固接該作動桿並抵接該活動塊，該動力組用以致 動該活動塊升降活動，該焊接電極組透過該線性電磁閥之 控制對一焊接元件進行微型電阻點焊作業。藉此，於焊接 過程中，可利用該光學尺及壓力感知器檢測焊接壓力及電 極位移量，再配合以一電壓及電流量測單元檢測焊接電流 及電壓降，以利用各相關焊接參數，使微型電阻點焊可進 行非破壞性的檢測，進而達到線上強度預測及提升焊接品 質之功效。 【實施方式】 為讓本發明之上述及其他目的、特徵及優點能更明 顯易懂，下文特舉本發明之較佳實施例，並配合所附圖式 ，作詳細說明如下： 请參照第1及2圖所示，本發明較佳實施例之微型 電阻點焊裝置係包含一基座丨、一線性電磁閥2、一光學 尺3、一動力組4及一焊接電極組5。該線性電磁閥2及 動力組4用以致動該焊接電極組5對一焊接工件6進行微 型電阻點焊作業，以便於該微型電阻點焊過程中，藉由該 線性電磁閥2之一壓力感知器22、該光學尺3及一電壓 及電流量測單元〔未繪示〕分別檢測各種相關焊接參數， 進而有效提升其焊接品質。 明再參照第1及2圖所示，本發明較佳實施例之基 座1係没有一立柱Π、一定位平台12及一工件平台13。 1302860 97.08.22第95149118號專利說明書及申請專利範圓修正本β 該立柱11設置於該基座1之頂面，且該立柱u之一侧設 ' 一定位架111，該定位架111 土設有數個支撐桿 - 各該支撐桿112頂端結合一固定架113 ,以便固定該線性 電磁閥2、光學尺3及動力組4等構件。該定位平台12 亦設置於該基座1之頂面且相對位於該固定柱u之一侧 ，以便結合該焊接電極組5之一第一電極頭51。該工件 平台13則設置於該基座丨之頂面且相對位於該定位平台 12 —側，以供置放一焊接工件6。 凊再參照第1及2圖所示，本發明難實施例之線 性電磁閥2設有-作動桿21及—壓力感知器22。該作動 桿21結合於該線性電磁閥2之底部，而可藉由該線性電 磁閥2致動該作動桿21朝向該基座i之方向升降移動。 該壓力感知H 22設置於該作祕21之桿身，用以檢測微 型電阻點焊過程中之焊接壓力。 ”月再多妝第1及2圖所示，本發明較佳實施例之動 力、、且4車乂>f土可選自一氣壓缸或一油壓缸等動力裝置，該動 力組4叹有一致動桿41，該致動桿41係連接一活動塊23 ，以便致動該活動塊23於該線性電磁閥2之作動桿21上 $行升降移動。其中脑動塊23可活動的結合於該作動 #21之#身且相對位於該壓力感知器下方，該活動塊 23相對於該作動桿21之一侧形成一容置槽231 ,且該活 $免23叹有自頂面貫穿至底面的至少-導引孔232 ,該 =引孔232可供該支樓桿112穿伸通過，以便該活動塊 ;“作動桿21上進行升降移動的過程中，亦可藉由該 13〇2860 97. 〇8· 22第95149118號專利說明書及申請專利範圍修正本β 支撐桿112提供一導引作用。 請再參照第1及2厨所示，本發明較佳實施例之先 學尺3係結合該基座1之定位架U1且相對位於該線性電 磁閥2之作動桿21側邊。該光學尺3上設有一位移量檢 測件31 ,該位移量檢測件31設有一第一結合部311及第 二結合部312。該第一結合部311係可活動的結合該光學 尺3，使該位移量檢測件31於光學尺3上進行升降移動 的過程中，可藉由該光學尺3量測該位移量檢測件31之 位移量，以便檢測微型電阻點焊過程中之電極位移量。該 第二結合部312係固接該線性電磁閥2之作動桿21且相 對伸入於該容置槽231内，該第二結合部312與該容置槽 231的一槽壁之間設有至少一彈性元件32，以便藉由該彈 性元件32之彈性抵撐作用，使該第二結合部312可確實 抵接該容置槽231之另一槽壁。 Λ 請再參照第1及2圖所示，本發明較佳實施例之焊 接電極組5設有一第一電極頭51及一第二電極頭52。該 第一電極頭51結合於該基座1之平台上，該第二電極 頭52係對應該第一電極頭51而結合於該線性電磁閥2之 作動桿21底端，使該第一電極頭51及第二電極頭52之 •間具有一預定距離，以便藉由該相對應之第一電極頭Η 及第二電極頭52對該焊接工件6進行微型電阻點焊作業 〇 請參照第2圖所示，當使用本發明微型電阻點焊裝 置枯，係朱將一焊接工件6放置於該工件平台13上，今 1302860 97.08· 22第95149118號專利說明書及申請專利範圍修正本β 焊接工件6之預定焊接部位係伸入該第一電極頭Μ及第 ' 電極頭52之間，以便完成微型 ι 作。 請參照第3圖所示，次利用該動力組4之致動桿4ι 帶動該活動塊23向下移動，藉由該活動塊23之容置样 231的槽壁與該位移量檢測件31之第二結合部312相^ 抵接，以及該第二結合部312亦固接該線性電磁閥2之作 動桿21的設計，使該活動塊23向下移動時，可同時帶動 該位移量檢測件31及該作動桿21向下移動，進而令結人 於該作動桿21之末端的第二電極頭52到達一預定位置， 且該第二電極頭52與該焊接工件6之預定焊接部位可維 持一預定距離，以便完成微型電阻點焊之預先動作。 請芩照第4圖所示，最後藉由該線性電磁閥2具有 可提高電極壓力控制之反應速度及精度的特性，而利用該 線性電磁閥2之作動桿21控制該第二電極頭52向下移^ 至該焊接工件6的預定焊接部位，以便對該焊接工件6進 行微型電阻點焊作業。其中當該線性電磁閥2之作動桿 21向下移動的過程中，可同時帶動該位移量檢測件31 : 下移動，並使該彈性元件32酉己合壓縮形變，藉由該位移 量檢=件31之第一結合部311結合該光學尺3之設計， $光+尺3即可檢測微型電阻點坪過程中之電極位移量（ )另外，並藉由設置於該作動桿21上之壓力感知器 22檢測微型電阻點焊過程中之焊接壓力，以及可再利用 -電壓及電流量測單元〔未繪示〕同時量測該微型電阻焊 —11 — l3〇286〇 97· 〇8· 22 金 *第95149118號專利說明書及申請專利範圍修正本❶ 過程中之焊接電流及電壓降，進而獲得微型電阻點焊線上 檢财所需之相调焊接參數。 如上所述，相較於習用電阻點焊技術並無針對「微 型」電阻點焊線上檢測技術之應用等缺點。本發明可於該 焊接電極組5對該焊接工件6進行微型電阻點焊作業的過 程中，藉由該光學尺3之位移量檢測件31及該壓力感知 器22檢測該焊接工件6之電極位移量及焊接壓力等機械 多數，並配合該電壓及電流量測單元〔未繪示〕同時量測 其焊接電流及電壓降等電氣參數。藉此，可將該焊接完成 2焊接工件6進行剝離試驗以確認其焊接強度，用以對照 2述線上檢測所獲得之各相關焊接參數，以便作為焊接品 質之判斷依據，進而建立非破雜的微型電阻點焊之線上 強度預測系統，以大幅提升其焊接品質。 雖然本發明已利用上述較佳實施例揭示，然其並非 用以限定本發明，任何熟習此技藝者在不脫離本發明之精 神和㈣之内，相對上述實施觸行各歡動與修改仍屬 本發明所保護之技術範轉，因此本發明之保護範圍當視後 附之申請專利範圍所界定者為準。 12 — 13〇286〇 97· 22第95149118號專利說明書及申請專利範圍修正本。 【囡式簡單說明】 電〜裝^ 電&叫裝复進行 第1圖：本發明較佳實施例之微型 合前視圖。 第2圖：本發明較佳實施例之微型 點焊前之組合侧視圖。 第3圖：本發明較佳實施例之微型電随點 點焊預先動作之組合側視圖。 又1充成 第4圖：本發明較佳實施例之微型電卩且點 點焊後之組合侧視圖。 ' t置進行 【主要元件符號說明】 11 立杈 112支撐桿 12 定位平台 2線性電礤閥 22壓力感知器 231容置槽 3 光學尺 311第—結合部 32彈性元件 41致動桿 51第—電㈣ 6 焊接工件 1 基座 111定位架 113固定架 13工件平台 21作動桿 23 活動塊 232導引孔 31位移量檢測件 312第二結合部 4 動力組 5 焊接電極組 52 第二電極頭 ——13 —1302860 97.08.22 Patent Specification No. 95149118 and the scope of the patent application. VII. Designation of Representative Representatives (1) The representative representative of the case is: (2). (2) Brief description of the component symbols of the representative diagram·· 1 Base 111 positioning frame 113 fixing frame 13 Workpiece platform 21 Actuating rod 23 Moving block 232 Guide hole 312 Second joint portion 4 Power group 5 Welding electrode group 52 Second Electrode head 11 Column 112 support rod 12 Positioning platform 2 Linear solenoid valve 22 Pressure sensor 231 accommodating groove 3 Optical scale 32 Elastic element 41 Actuating rod 51 First electrode head 6 Welding workpiece 8. If there is a chemical formula in this case, please reveal The chemical formula that best shows the characteristics of the invention: 1302860 97. 08. 22 Patent specification 95149118 and the scope of the patent application. IX. Description of the invention: [Technical field to which the invention pertains] Κ The present invention relates to a micro resistance spot welding device, and more particularly to detecting a welded workpiece by an optical scale and a pressure sensor for performing a micro resistance spot welding process. A miniature resistance spot welding device that increases the welding quality by adjusting parameters such as welding pressure and electrode displacement. [Prior Art] At present, the common large-scale resistance spot welding line detection technology mainly includes two categories of detection electrical parameters and mechanical parameters. The electrical parameter is a voltage drop of a contact surface of the welded workpiece, and a welding current through one of the welding workpieces, and the dynamic resistance change between the welding workpieces obtained by calculating the voltage drop and the welding current can be predicted and controlled Welding quality. The mechanical parameter is - the electrode is added to the welding guard - welding pressure and - electrode displacement 1, the welding pressure can be used to show the impact of the electrode head on the surface of the welded workpiece, the displacement of the electrode is the electrode Under the pressure stroke of the head, by the detection result of the welding pressure and the electrode displacement amount detection, it can be known whether the welding workpiece has improper installation. Therefore, the conventional large-scale resistance point on-line detection technology mainly maintains the welding quality by detecting the above electrical parameters and mechanical parameters. However, in terms of on-line detection technology for resistance spot welding, there is no application for micro-resistance technology. *The size of the welding workpiece in the micro resistance spot welding is relatively m, and the influence of the phase transfer parameter on the quality of the splicing is also significantly different from that of the large resistance spot welding. Therefore, the above-mentioned conventional large-scale electric welding technology with spot welding is It is not suitable for micro electric welding. In addition, the current patent specification of 1302860 97.08.22帛95149118 and the scope of the patent application are revised. In the production line, the industry uses the on-line detection method for micro-resistance spot welding, which relies on professional veterans to visually determine the weld quality by visually determining the shape of the weld, the color of the weld surface, and the shape of the weld. However, the micro-resistance spot welding process is visually detected on the line, and the purpose of accurately detecting the soldering quality cannot be achieved. Based on the above reasons, it is possible to develop an in-line device that can be applied to micro resistance spot welding technology to further maintain the welding quality of micro resistance spot welding. In view of the above, the present invention improves the above-mentioned in-line detection technology for large-scale resistance spot welding, which cannot be applied to the detection of the welding quality of the micro-resistance spot welding, which is controlled by a linear solenoid valve to control a welding electrode set to a welded workpiece. Micro-resistance spot welding operation, in the micro-resistance spot welding process, using an optical scale and a pressure sensor to detect mechanical parameters such as welding pressure and electrode displacement, and cooperate with a voltage and current measuring unit to detect a welding current And a voltage drop and other electrical parameters, in order to establish a micro-resistance spot welding system that can directly predict the strength of the solder joint according to the foregoing dynamic welding parameters, thereby improving the welding quality. SUMMARY OF THE INVENTION The main object of the present invention is to provide a micro resistance spot welding device for controlling a welding workpiece by a linear solenoid valve to perform a micro resistance spot welding operation on a welded workpiece, so as to utilize an optical scale and a pressure. The sensor and a voltage and current measuring unit detect each relevant welding parameter, so that the invention has the effect of improving the welding quality of the micro resistance spot welding. A micro resistance spot welding apparatus according to the present invention comprises a base, a linear solenoid valve, an optical scale, a power pack and a welding electrode set. The patent specification and the scope of the patent scope modification of the 1302860 97·08· 22 95149118 are disposed above the base and have an actuating rod provided with a pressure sensor and a movable block, the optical The shank is provided with a displacement detecting member for fixing the actuating rod and abutting the movable block, wherein the power group is used for actuating the movable block lifting movement, and the welding electrode group is configured to perform micro resistance on a welding component through the control of the linear electromagnetic valve. Spot welding operation. Thereby, during the welding process, the optical scale and the pressure sensor can be used to detect the welding pressure and the electrode displacement, and the welding current and the voltage drop are detected by a voltage and current measuring unit to utilize the relevant welding parameters. Micro resistance spot welding enables non-destructive testing to achieve online strength prediction and improved weld quality. BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, and advantages of the present invention will become more apparent from the aspects of the appended claims appended claims As shown in FIG. 2, the micro resistance spot welding apparatus of the preferred embodiment of the present invention comprises a base cymbal, a linear solenoid valve 2, an optical scale 3, a power pack 4 and a welding electrode set 5. The linear solenoid valve 2 and the power unit 4 are used to actuate the welding electrode assembly 5 to perform a micro resistance spot welding operation on a welding workpiece 6 so as to be pressure sensing by the linear solenoid valve 2 during the micro resistance spot welding process. The optical unit 3, the optical scale 3 and a voltage and current measuring unit (not shown) respectively detect various relevant welding parameters, thereby effectively improving the welding quality. Referring again to Figures 1 and 2, the base 1 of the preferred embodiment of the present invention does not have a post, a positioning platform 12 and a workpiece platform 13. 1302860 97.08.22 Patent Specification No. 95149118 and Patent Application Revision No. β The column 11 is disposed on the top surface of the base 1 and one side of the column u is provided with a positioning frame 111, and the positioning frame 111 is grounded. There are a plurality of support rods - a top end of each of the support rods 112 is coupled to a fixing frame 113 for fixing the linear solenoid valve 2, the optical scale 3 and the power pack 4 and the like. The positioning platform 12 is also disposed on the top surface of the base 1 and opposite to one side of the fixing post u to join the first electrode tip 51 of the welding electrode group 5. The workpiece platform 13 is disposed on the top surface of the base cymbal and opposite to the side of the positioning platform 12 for placing a welding workpiece 6. Referring again to Figures 1 and 2, the linear solenoid valve 2 of the presently difficult embodiment of the present invention is provided with an actuating lever 21 and a pressure sensor 22. The actuating lever 21 is coupled to the bottom of the linear solenoid valve 2, and the actuating lever 21 is actuated by the linear solenoid valve 2 to move up and down in the direction of the base i. The pressure sensing H 22 is disposed on the shaft of the secret 21 to detect the welding pressure during the micro resistance spot welding process. In the first and second figures of the month, the power of the preferred embodiment of the present invention, and the 4 rut>f soil may be selected from a power device such as a pneumatic cylinder or a hydraulic cylinder, and the power unit 4 The actuating lever 41 is connected to a movable block 23 for actuating the movable block 23 to move up and down on the actuating lever 21 of the linear solenoid valve 2. The brain block 23 is movable. The movable body 23 is formed under the pressure sensor, and the movable block 23 forms a receiving groove 231 with respect to one side of the actuating rod 21, and the live $23 sighs from the top surface. At least - a guiding hole 232 to the bottom surface, the = guiding hole 232 is allowed to pass through the branch pole 112 for the movable block; "in the process of lifting and moving the actuating rod 21, the 13" can also be used 2860 97. 〇8·22 95149118 Patent Specification and Patent Application Revision This beta support bar 112 provides a guiding effect. Referring to the first and second kitchens, the first ruler 3 of the preferred embodiment of the present invention is coupled to the positioning frame U1 of the base 1 and opposite to the side of the actuating lever 21 of the linear solenoid valve 2. The optical scale 3 is provided with a displacement detecting member 31. The displacement detecting member 31 is provided with a first joint portion 311 and a second joint portion 312. The first joint portion 311 is movably coupled to the optical scale 3, and the displacement amount detecting member 31 is moved up and down on the optical scale 3, and the displacement amount detecting member 31 can be measured by the optical scale 3. The amount of displacement is used to detect the amount of electrode displacement during the micro resistance spot welding process. The second joint portion 312 is fixed to the actuating rod 21 of the linear solenoid valve 2 and extends into the accommodating groove 231. The second joint portion 312 is disposed between a groove wall of the accommodating groove 231 and the groove wall of the accommodating groove 231. The at least one elastic member 32 is configured to ensure that the second joint portion 312 can abut against the other groove wall of the accommodating groove 231 by the elastic abutting action of the elastic member 32. Referring to Figures 1 and 2 again, the welding electrode assembly 5 of the preferred embodiment of the present invention is provided with a first electrode tip 51 and a second electrode tip 52. The first electrode tip 51 is coupled to the platform of the susceptor 1 , and the second electrode tip 52 is coupled to the bottom end of the actuating rod 21 of the linear solenoid valve 2 corresponding to the first electrode tip 51 to make the first electrode The head 51 and the second electrode tip 52 have a predetermined distance therebetween to perform the micro resistance spot welding operation on the welding workpiece 6 by the corresponding first electrode tip 第二 and the second electrode tip 52. As shown in the figure, when the micro-resistance spot welding device of the present invention is used, a welding workpiece 6 is placed on the workpiece platform 13, and the patent specification and the patent application scope of the present invention are modified. The predetermined welding portion extends between the first electrode tip and the 'electrode tip 52 to complete the micro-mesh. Referring to FIG. 3, the movable block 4 ι of the power unit 4 is used to drive the movable block 23 to move downward, and the groove wall of the movable block 23 and the displacement detecting member 31 are The second joint portion 312 is abutted, and the second joint portion 312 is also fixed to the design of the actuating rod 21 of the linear solenoid valve 2. When the movable block 23 is moved downward, the displacement detecting member can be simultaneously driven. 31 and the actuating rod 21 is moved downward, so that the second electrode head 52 at the end of the actuating rod 21 reaches a predetermined position, and the predetermined welding portion of the second electrode head 52 and the welding workpiece 6 can be maintained. A predetermined distance to complete the pre-action of the micro resistance spot welding. Referring to FIG. 4, finally, the linear solenoid valve 2 has a characteristic of improving the reaction speed and accuracy of the electrode pressure control, and the second electrode head 52 is controlled by the actuating lever 21 of the linear solenoid valve 2. The predetermined welding portion of the welding workpiece 6 is moved down to perform a micro resistance spot welding operation on the welding workpiece 6. In the process of moving the actuating lever 21 of the linear solenoid valve 2 downward, the displacement detecting member 31 can be simultaneously driven to move downward, and the elastic member 32 can be compressed and deformed by the displacement measurement. The first joint portion 311 of the piece 31 is combined with the design of the optical scale 3, and the light + ruler 3 can detect the amount of electrode displacement during the process of the micro-resistance point flat ( ), and by the pressure placed on the actuating rod 21 The sensor 22 detects the welding pressure during the micro resistance spot welding process, and the reusable-voltage and current measuring unit (not shown) simultaneously measures the micro resistance welding - 11 - l3 〇 286 〇 97 · 〇 8 · 22 The gold patent No. 95149118 and the scope of the patent application modify the welding current and voltage drop in the process, and thus obtain the phase adjustment welding parameters required for the micro-resistance spot welding line. As mentioned above, there is no disadvantage of the application of the "micro" resistance spot welding line detection technology compared to the conventional resistance spot welding technology. The present invention can detect the electrode displacement of the welding workpiece 6 by the displacement amount detecting member 31 and the pressure sensor 22 of the optical scale 3 during the micro resistance spot welding operation of the welding workpiece group 5 in the welding electrode group 5. A large number of machines such as the amount and the welding pressure, and the electrical parameters such as the welding current and the voltage drop are simultaneously measured by the voltage and current measuring unit (not shown). Thereby, the welding workpiece 2 can be subjected to a peeling test to confirm the welding strength thereof, and the relevant welding parameters obtained by the line inspection can be checked according to the above-mentioned line, so as to judge the welding quality, thereby establishing non-breaking. Micro-resistance spot welding online strength prediction system to greatly improve the welding quality. Although the present invention has been disclosed in the above-described preferred embodiments, it is not intended to limit the present invention, and those skilled in the art will be able to move and modify relative to the above embodiments without departing from the spirit and scope of the present invention. The technical scope of the present invention is protected by the scope of the invention as defined by the appended claims. 12 — 13〇 286〇 97· 22 Patent Specification No. 95149118 and the scope of the patent application. [Simplified description of the simplification] The electric device is mounted and the device is mounted. Fig. 1 is a front view of the preferred embodiment of the present invention. Figure 2 is a side view of the combination prior to micro spot welding of a preferred embodiment of the present invention. Fig. 3 is a side view showing a combination of a micro electric spot welding operation in accordance with a preferred embodiment of the present invention. Further, 1 is filled. Fig. 4 is a side view showing the combination of the micro-electrode of the preferred embodiment of the present invention and spot welding. 't set to carry out [main component symbol description] 11 vertical 杈 112 support rod 12 positioning platform 2 linear electric 礤 valve 22 pressure sensor 231 accommodating groove 3 optical 311 first - joint portion 32 elastic member 41 actuating rod 51 - Electric (4) 6 Welding workpiece 1 Base 111 Positioning frame 113 Fixing frame 13 Workpiece platform 21 Actuating rod 23 Moving block 232 Guide hole 31 Displacement detecting member 312 Second joint portion 4 Power group 5 Welding electrode group 52 Second electrode head - —13 —