A Portable Spot Welding Electrode Neutrality Detection Device and Method

Abstract

The present invention relates to the technical field of centering detection, and provides a portable spot welding electrode centering detection device and method. Among them, a portable spot welding electrode centering detection device includes a first fixing ring and a data collector. A lower electrode is installed on the first fixing ring, a lower-layer PCB board is installed on the lower electrode, a support rod is slidably installed on the lower-layer PCB board, an upper-layer PCB board is arranged above the support rod, an upper electrode is installed in the middle of the upper-layer PCB board, electromagnetic detection Hall sensors are installed on both the lower-layer PCB board and the upper-layer PCB board, and the data collector is connected to the electromagnetic detection Hall sensors. Through the above technical solution, the problem that the spot welding electrodes often shift due to external forces such as interference with workpieces and unreasonable assembly of spot welding parts, resulting in misalignment of the upper and lower electrodes and a decrease in spot welding quality, is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of centering detection, and specifically, to a portable spot welding electrode centering detection device and method. Background Art

[0002] Resistance spot welding is a welding process commonly used for connecting metal materials. By pressing two metal materials together and heating them with an electric current, a weld spot is formed. Electrode centering is to ensure that the electrodes always maintain the correct contact position during the welding process to guarantee welding quality and consistency. Existing spot welding electrode centering detection devices still have some defects.

[0003] For example, the invention patent with the publication number CN102470477A discloses an electrode inspection device for spot welding. Since the distance from the electrode to the camera via the mirror is fixed, it is difficult for the measurement value to deviate. Moreover, since the electrode tip can be photographed from the front by the camera using the mirror, by processing the photographed image in the arithmetic unit, the tip diameter in at least two directions can be measured at one time. In this way, the measurement of the electrode tip diameter, that is, whether it is circular, can be accurately performed without reducing the production line operation rate. By simultaneously reflecting the electrode tips on both sides of the mirror, the images of a pair of electrode tips can be photographed at the same time, so that the measurement of the electrode tips can be carried out without reducing the production line operation rate. Moreover, since no camera is arranged between a pair of electrode tips, only a mirror is arranged, the distance between the electrodes of the inspection device main body can be shortened, and thus a compact overall structure can be formed. Although the above device can ensure the compactness of the overall structure, during the resistance spot welding process, the spot welding electrodes often shift due to external forces such as interference with the workpiece and unreasonable assembly of the spot welding parts, resulting in the phenomenon of misalignment between the upper and lower electrodes, causing a decrease in spot welding quality, being unable to accurately adjust the centering detection range, and being unable to adjust the overall support range of the device using a movable support structure during detection, with insufficient adaptability. Summary of the Invention

[0004] The present invention provides a portable spot welding electrode centering detection device and method, which solves the problem that the spot welding electrodes often shift due to external forces such as interference with the workpiece and unreasonable assembly of the spot welding parts, resulting in the phenomenon of misalignment between the upper and lower electrodes and causing a decrease in spot welding quality.

[0005] The technical solution of the present invention is as follows:

[0006] A portable spot welding electrode neutrality detection device, comprising a first fixing ring and a data collector. A lower electrode is installed on the first fixing ring, a lower layer PCB board is installed on the lower electrode, a support rod is slidably installed on the lower layer PCB board, an upper layer PCB board is arranged above the support rod, an upper electrode is installed in the middle of the upper layer PCB board, electromagnetic detection Hall sensors are installed on both the lower layer PCB board and the upper layer PCB board, the data collector is connected to the electromagnetic detection Hall sensors, and a connection component is installed between the upper electrode and the first fixing ring.

[0007] As a preferred solution of the present invention, a circular groove for the movement of the support rod is opened on the lower layer PCB board. A first support plate and a second support plate are fixedly connected to the lower layer PCB board. A fixed rod is fixedly connected to the first support plate, a second connection plate is fixedly arranged on the fixed rod, and the data collector is fixedly connected to the fixed rod.

[0008] As a preferred solution of the present invention, a fixed block is fixedly connected to the second support plate, a first connection plate is fixedly arranged on the fixed block, the first connection plate is fixedly connected to the upper layer PCB board, and marking components are installed on both the second support plate and the first support plate.

[0009] As a preferred solution of the present invention, the connection component includes a connecting plate rotatably installed on the first fixing ring, a second fixing ring is rotatably installed on the connecting plate, the second fixing ring is fixedly connected to the upper electrode, a spring button is fixedly arranged on the second fixing ring, a pressure rod is fixedly connected to one side of the upper electrode, an electric push rod is fixedly arranged on the connecting plate, and a pressing plate is fixedly connected to the top of the electric push rod.

[0010] As a preferred solution of the present invention, the pressing plate is rotatably connected to the upper electrode, and the central axis of the upper electrode is collinear with the central axes of the first fixing ring and the second fixing ring.

[0011] As a preferred solution of the present invention, the second connection plate is fixedly connected to the upper layer PCB board, a guiding block is fixedly connected to the second connection plate, two columns of the guiding blocks are equidistantly arranged on the second connection plate, adjusting components are installed on both the upper layer PCB board and the lower layer PCB board, and a clamping component is installed on the adjusting component.

[0012] As a preferred embodiment of the present invention, the adjusting assembly includes a rotating ring rotatably mounted on the upper-layer PCB board. Elastic ropes are fixedly connected to the four surrounding sides of the rotating ring. The elastic ropes are fixedly connected to both sides of the electromagnetic detection Hall sensor. A fixing plate is fixedly arranged on the upper-layer PCB board. A damping shaft is fixedly mounted on the fixing plate. The damping shaft is rotatably connected to the electromagnetic detection Hall sensor. Through holes for the left eccentric circular motion of the electromagnetic detection Hall sensor are formed on both the upper-layer PCB board and the lower-layer PCB board.

[0013] As a preferred embodiment of the present invention, the engaging assembly includes a lapping plate fixedly connected to the rotating ring. A plurality of docking grooves are formed on the upper-layer PCB board. A docking rod is slidably mounted on the lapping plate. A support spring is installed between the lapping plate and the docking rod. The adjusting assembly and the engaging assembly have the same connection structure between the upper-layer PCB board and the lower-layer PCB board.

[0014] As a preferred embodiment of the present invention, the marking assembly includes a moving groove and a groove formed on the second support plate. A marking block is slidably mounted in the moving groove. A rubber connecting block is fixedly arranged on the marking block. A moving groove and an extending groove are formed on the second support plate. A convex rod is slidably mounted in the extending groove. The convex rod is fixedly connected to the support rod. A scale mark is arranged on the second support plate. A damping block is fixedly arranged in the groove. The marking assembly has the same connection structure between the first support plate and the second support plate.

[0015] A portable spot welding electrode alignment detection method includes the following steps:

[0016] S1: Preparation work: Replace the electrode caps of the new upper electrode and lower electrode or use an electrode grinder to grind the electrodes to reduce the influence of the contact surface state of the upper electrode and lower electrode on the magnetic field around the electrodes, and adjust appropriate welding parameters.

[0017] S2: Install the upper electrode and lower electrode: Install the upper electrode and lower electrode on the lower-layer PCB board and the upper-layer PCB board so that the central axes of the upper electrode and lower electrode are collinear.

[0018] S3: Detection stage: Select appropriate welding parameters to energize the electrodes. While energizing, use the electromagnetic detection Hall sensor to detect the electrical signal of the magnetic field size around the electrodes, and use a data collector to collect and record each magnetic field electrical signal.

[0019] S4: Data processing: Use the data collector to process the collected data, judge whether the electrodes are aligned, the deviation direction W and size H of the electrodes, and display them on the screen, and perform alarm processing for those with a neutrality deviation exceeding the range.

[0020] The working principle and beneficial effects of the present invention are as follows:

[0021] 1. By setting the upper electrode, lower electrode and electromagnetic detection Hall sensor, the direction of electrode deflection is detected, and numerical and image feedback are formed through calculation and processing, solving the problem that the mechanical mechanism design in the prior art is complex and it is difficult to realize the centering detection of spot welding electrodes. When the device is in use, it can center the upper and lower electrodes to ensure the welding quality.

[0022] 2. The device is provided with a slidable support rod. When the range of the welding area is large, the support rod can be slid to the first support plate or the second support plate on the device. While maintaining the support function, the support rod can also adjust the position of welding detection, improving the convenience of the device during use.

[0023] 3. Through the set marking component, the function of adjusting the support range and detection range by using the support structure is realized. When the support rod for supporting the upper PCB board and the lower PCB board moves to the position of the second support plate, the support position of the device is accurately adjusted by using the scale markings on the second support plate and the marking block pointing to the scale markings, so as to adjust the support position of the device according to the needs of welding detection subsequently, enhancing the applicability of the device.

[0024] 4. Through the set connection component, adjustment component and clamping component, the device can accurately adjust the spot welding detection range. By rotating the rotating ring, the tensioning rope pulls the electromagnetic detection Hall sensor to make an eccentric circular motion on the fixed plate, so that the detection range of the device is reduced. After the adjustment is completed, the docking rod is installed into the docking groove, thereby adjusting and fixing the positions of the four electromagnetic detection Hall sensors at the same time. Subsequently, the electromagnetic detection Hall sensor can be automatically reset by the tensioning ropes symmetrically distributed on both sides of the electromagnetic detection Hall sensor, solving the problem that the existing centering detection device cannot accurately adjust the centering detection range. The connection component on the device can trigger the spring button during the downward movement of the upper electrode, facilitating the automatic power-on of the upper electrode after centering adjustment, enhancing the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The following further describes the present invention in detail with reference to the drawings and specific embodiments.

[0026] Figure 1 is the overall structural schematic diagram of a portable spot welding electrode centering detection device of the present invention;

[0027] Figure 2 is Figure 1 the enlarged schematic diagram of the structure at A in

[0028] Figure 3 the connection structural schematic diagram of the first fixing ring and the connection component of the present invention;

[0029] Figure 4 It is a schematic diagram of the connection structure between the data collector and the fixed rod of the present invention;

[0030] Figure 5 It is a schematic diagram of the connection structure between the fixed block and the first connecting plate of the present invention;

[0031] Figure 6 is Figure 5 An enlarged schematic diagram of the structure at position B in

[0032] Figure 7 is Figure 5 An enlarged schematic diagram of the structure at position C in

[0033] Figure 8 is Figure 5 An enlarged schematic diagram of the structure at position D in

[0034] Figure 9 is Figure 5 An enlarged schematic diagram of the structure at position E in

[0035] Figure 10 It is a schematic diagram of the connection structure between the swivel ring and the overlapping plate of the present invention;

[0036] Figure 11 It is a schematic diagram of the connection structure between the second support plate and the fixed block of the present invention;

[0037] Figure 12 is Figure 11 An enlarged schematic diagram of the structure at position F in

[0038] Reference numerals: 1, first fixed ring; 2, lower-layer PCB board; 3, electromagnetic detection Hall sensor; 4, support rod; 5, upper-layer PCB board; 6, upper electrode; 7, lower electrode; 8, data collector; 9, first support plate; 10, second support plate; 11, fixed block; 12, first connecting plate; 13, connecting assembly; 1301, connecting plate; 1302, second fixed ring; 1303, spring button; 1304, pressing rod; 1305, electric push rod; 1306, pressing plate; 14, fixed rod; 15, second connecting plate; 16, guiding block; 17, adjusting assembly; 1701, swivel ring; 1702, elastic cord; 1703, fixing plate; 1704, damping shaft; 18, through hole; 19, engaging assembly; 1901, overlapping plate; 1902, docking groove; 1903, docking rod; 1904, support spring; 20, circular groove; 21, marking assembly; 2101, marking block; 2102, moving groove; 2103, scale marking; 2104, groove; 2105, damping block; 2106, connecting block; 22, extending groove; 23, convex rod. Detailed implementation manners

[0039] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0040] Embodiment 1

[0041] As Figures 1 - 4 shown, this embodiment proposes a portable spot welding electrode alignment detection device, including a first fixing ring 1 and a data collector 8, characterized in that: a lower electrode 7 is installed on the first fixing ring 1, a lower layer PCB board 2 is installed on the lower electrode 7, a support rod 4 is slidably installed on the lower layer PCB board 2, an upper layer PCB board 5 is arranged above the support rod 4, an upper electrode 6 is installed in the middle of the upper layer PCB board 5, electromagnetic detection Hall sensors 3 are installed on both the lower layer PCB board 2 and the upper layer PCB board 5, the data collector 8 is connected to the electromagnetic detection Hall sensors 3, and a connection component 13 is installed between the upper electrode 6 and the first fixing ring 1. During use, replace the electrode caps of the new upper electrode 6 and the lower electrode 7 or use an electrode grinder to grind the electrodes. The electrode diameter is 20 mm to reduce the influence of the contact surface state of the upper electrode 6 and the lower electrode 7 on the magnetic field around the electrodes, and adjust appropriate welding parameters. Install the upper electrode 6 and the lower electrode 7 on the lower layer PCB board 2 and the upper layer PCB board 5 so that the central axes of the upper electrode 6 and the lower electrode 7 are collinear. Select appropriate welding parameters to energize the electrodes. The welding current is 3 KA and the welding time is 20 CYC this time. While energizing, use the electromagnetic detection Hall sensor 3 to detect the electrical signal of the magnetic field size around the electrodes, and use the data collector 8 to collect and record each magnetic field electrical signal. The sampling frequency is 10 KHz. Mark the coordinate system with the azimuth of sensor D1 as the X-axis and the azimuth of D4 as the Y-axis. The four sensor signals of the upper layer PCB board 5 are respectively recorded as X2+, X2-, Y2+, Y2-, and the four sensor signals of the lower layer PCB board 2 are respectively recorded as X1+, X1-, Y1+, Y1-.

[0042] Use the data collector 8 to process the collected data. The data collector 8 is a single-chip microcomputer or a data acquisition card, judge whether the electrodes are aligned, the direction W and size H of the electrode offset, and display them on the screen, and perform alarm processing for the alignment deviation exceeding the range. The data acquisition module 8 is composed of a signal processing module, an A / D analog-to-digital conversion circuit, a CPU control module, and a data transmission module, and is connected to an industrial computer through the RS232 / RS485 bus.

[0043] Calculate the average values of the sensor signals, which are respectively recorded as U X1+ 、U X1- 、U Y1+ 、U Y1-, U X2+ , U X2- , U Y2+ , U Y2- .

[0044] Calculate the magnetic field strength values B according to the relationship between the acquired signal values and the magnetic field strength respectively X1+ , B X1- , B Y1+ , B Y1- , B X2+ , B X2- , B Y2+ , B Y2- .

[0045] Calculate the magnetic field strength values B according to the relationship between the acquired signal values and the magnetic field strength respectively X1+ , B X1- , B Y1+ , B Y1- , B X2+ , B X2- , B Y2+ , B Y2- .

[0046] B = (μ0 * I) / (2 * π * r) μ0 = 4π × 10 -7 Tm / A

[0047] Calculate the distance D from the sensor to the electrode according to the above magnetic field strength formula X1+ , D X1- , D Y1+ , D Y1- , D X2+ , D X2- , D Y2+ , D Y2- .

[0048] Sensor signal number X1+ X1- Y1+ Y1- X2+ X2- Y2+ Y2- Acquired voltage value U (V) 3.07 3.39 3.10 3.33 3.17 3.22 3.22 3.23 Magnetic field strength value B (mT) 380.9 593.7 399.5 552.5 445.5 477.9 478.0 488.3 Distance D from sensor to electrode (mm) 15.75 10.11 15.02 10.86 13.47 12.55 12.55 12.29

[0049] Calculate the offset in the X-axis direction of the electrode Offset in the Y-axis direction Offset distance Calculate the offset angle of the electrode as

[0050] Display the offset direction and offset value of the upper electrode, and alarm for the case where the offset value exceeds the required range.

[0051] Embodiment 2

[0052] As Figures 1 - 12 shown, based on the same concept as the above Embodiment 1, this embodiment also proposes a portable spot welding electrode neutrality detection device.

[0053] In this embodiment, a circular groove 20 for the movement of the support rod 4 is formed on the lower-layer PCB board 2. A first support plate 9 and a second support plate 10 are fixedly connected to the lower-layer PCB board 2. A fixed rod 14 is fixedly connected to the first support plate 9. A second connecting plate 15 is fixedly arranged on the fixed rod 14. The data collector 8 is fixedly connected to the fixed rod 14. The support rod 4 can slide through the circular groove 20, thereby changing the support position of the device so as to adjust the support range of the device subsequently.

[0054] In this embodiment, a fixed block 11 is fixedly connected to the second support plate 10. A first connecting plate 12 is fixedly arranged on the fixed block 11. The first connecting plate 12 can support the rear side of the device. The first connecting plate 12 is fixedly connected to the upper-layer PCB board 5. Marking components 21 are installed on both the second support plate 10 and the first support plate 9. The marking components 21 on the first support plate 9 and the second support plate 10 facilitate the precise adjustment of the support range of the device.

[0055] In this embodiment, the connecting component 13 includes a connecting plate 1301 rotatably installed on the first fixing ring 1. A second fixing ring 1302 is rotatably installed on the connecting plate 1301. The second fixing ring 1302 is fixedly connected to the upper electrode 6. A spring button 1303 is fixedly arranged on the second fixing ring 1302. A pressure rod 1304 is fixedly connected to one side of the upper electrode 6. An electric push rod 1305 is fixedly arranged on the connecting plate 1301. The top of the electric push rod 1305 is fixedly connected to a pressing plate 1306. When the electric push rod 1305 shortens, it will press down the upper electrode 6 through the pressing plate 1306, so that the pressure rod 1304 presses down the spring button 1303, enabling the upper electrode 6 to be automatically powered on, enhancing the convenience of the device during use.

[0056] In this embodiment, the pressing plate 1306 is rotatably connected to the upper electrode 6. The central axis of the upper electrode 6 is collinear with the central axes of the first fixing ring 1 and the second fixing ring 1302, ensuring the overall stability of the device. The rotatably installed pressing plate 1306 facilitates subsequent adjustment of the pressing plate 1306 without affecting the pressing effect on the upper electrode 6.

[0057] In this embodiment, the second connecting plate 15 is fixedly connected to the upper-layer PCB board 5. A guiding block 16 is fixedly connected to the second connecting plate 15. Two columns of guiding blocks 16 are equidistantly arranged on the second connecting plate 15. Adjusting components 17 are installed on both the upper-layer PCB board 5 and the lower-layer PCB board 2. A clamping component 19 is installed on the adjusting component 17. The detection range of the device is changed through the adjusting component 17 on the device, and the clamping component 19 can fix the detection range after adjusting the detection range, enhancing the practicality of the device.

[0058] In this embodiment, the adjusting assembly 17 includes a rotating ring 1701 rotatably mounted on the upper-layer PCB board 5. Elastic ropes 1702 are fixedly connected to the four sides of the rotating ring 1701. The elastic ropes 1702 are fixedly connected to both sides of the electromagnetic detection Hall sensor 3. A fixing plate 1703 is fixedly arranged on the upper-layer PCB board 5. A damping shaft 1704 is fixedly mounted on the fixing plate 1703. The damping shaft 1704 is rotatably connected to the electromagnetic detection Hall sensor 3. Through holes 18 for the left eccentric circular motion of the electromagnetic detection Hall sensor 3 are formed on both the upper-layer PCB board 5 and the lower-layer PCB board 2. When the rotating ring 1701 rotates, it can pull the elastic rope 1702 on one side of the electromagnetic detection Hall sensor 3, causing the electromagnetic detection Hall sensor 3 to rotate within the through hole 18. When the electromagnetic detection Hall sensor 3 performs eccentric circular motion, the detection range of the device can be changed to adapt to different detection requirements for use.

[0059] In this embodiment, the clamping assembly 19 includes a lapping plate 1901 fixedly connected to the rotating ring 1701. A plurality of docking grooves 1902 are formed on the upper-layer PCB board 5. A docking rod 1903 is slidably mounted on the lapping plate 1901. A support spring 1904 is installed between the lapping plate 1901 and the docking rod 1903. The adjusting assembly 17 and the clamping assembly 19 have the same connection structure between the upper-layer PCB board 5 and the lower-layer PCB board 2. When the rotating ring 1701 and the lapping plate 1901 rotate to a suitable angle, the docking rod 1903 can be clamped into the docking groove 1902 through the support spring 1904 to complete the adjustment and fixing of the detection range of the device.

[0060] In this embodiment, the marking assembly 21 includes a moving groove 2102 and a groove 2104 formed on the second support plate 10. A marking block 2101 is slidably mounted in the moving groove 2102. A rubber connecting block 2106 is fixedly arranged on the marking block 2101. A moving groove 2102 and an extension groove 22 are formed on the second support plate 10. A convex rod 23 is slidably mounted in the extension groove 22. The convex rod 23 is fixedly connected to the support rod 4. A scale mark 2103 is arranged on the second support plate 10. A damping block 2105 is fixedly arranged in the groove 2104. The marking assembly 21 has the same connection structure between the first support plate 9 and the second support plate 10. The device can move the support rod 4 to a suitable position on the first support plate 9 or the second support plate 10, so that the two rubber connecting blocks 2106 are sleeved on the support rod 4. Then, the support position of the support rod 4 can be accurately adjusted through the marking block 2101 and the scale mark 2103, so as to adjust the support range of the device according to the size of the detection area subsequently.

[0061] Specifically, the present invention is a portable spot welding electrode alignment detection device and method. First, as Figure 1As shown, replace the electrode caps of the new upper electrode 6 and lower electrode 7 or use an electrode grinder to grind the electrodes to reduce the influence of the contact surface state of the upper electrode 6 and lower electrode 7 on the magnetic field around the electrodes, and adjust appropriate welding parameters. Install the upper electrode 6 and lower electrode 7 on the lower-layer PCB board 2 and the upper-layer PCB board 5 so that the central axes of the upper electrode 6 and lower electrode 7 are collinear. Select appropriate welding parameters to energize the electrodes. While energizing, use the electromagnetic detection Hall sensor 3 to detect the electrical signal of the magnetic field magnitude around the electrodes, and use the data collector 8 to collect and record each magnetic field electrical signal. Use the data collector 8 to process the collected data, judge whether the electrodes are centered, the direction W and magnitude H of the electrode offset, and display them on the screen, and perform alarm processing for those with a centering deviation exceeding the range.

[0062] As Figures 1 - 6 and Figures 10 - 12 shown, when the device is in use, adjust the support range of the device according to the position to be detected. Since the adjustment components 17 and the engaging components 19 have the same connection structure between the upper-layer PCB board 5 and the lower-layer PCB board 2, and the marking component 21 has the same connection structure between the first support plate 9 and the second support plate 10, the device can pass through the extension slot 22 and the circular slot 20, so that the convex rod 23 on the support rod 4 can slide between the first support plate 9 and the second connecting plate 15, between the second support plate 10 and the first connecting plate 12, on the lower-layer PCB board 2, and on the upper-layer PCB board 5, thereby adjusting the support positions of the four support rods 4. Move the support rod 4 to a suitable position on the first support plate 9 or the second support plate 10, so that the two rubber connecting blocks 2106 are sleeved on the support rod 4, and then precisely adjust the support position of the support rod 4 through the marking block 2101 and the scale mark 2103. Adjust the support range of the device according to the size of the detection area. The damping block 2105 in the groove 2104 can tighten the support rod 4, so that the support rod 4 remains fixed after being adjusted to a suitable position. During centering detection, the electric push rod 1305 can be shortened, and the upper electrode 6 can be pressed down by the pressing plate 1306, so that the pressing rod 1304 presses down the spring button 1303, so that the upper electrode 6 can be automatically energized during operation. As Figures 3 - 12 shown, when the device adjusts the detection range, pull up the docking rod 1903, so that the support spring 1904 is compressed, and the docking rod 1903 can be removed from the docking groove 1902. Rotate the overlapping plate 1901 and the rotating ring 1701, and pull the tightening rope 1702 on one side of the electromagnetic detection Hall sensor 3, so that the electromagnetic detection Hall sensor 3 rotates in the through hole 18. When the electromagnetic detection Hall sensor 3 makes an eccentric circular motion, the detection range of the device can be changed to meet different detection requirements. When the electromagnetic detection Hall sensor 3 is adjusted to a suitable position, the docking rod 1903 is snapped into the docking groove 1902 through the support spring 1904 to complete the adjustment and fixing work of the detection range of the device.

[0063] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A portable spot welding electrode neutrality detection device, comprising a first fixing ring and a data collector, characterized in that: A lower electrode is installed on the first fixing ring, a lower-layer PCB board is installed on the lower electrode, a support rod is slidably installed on the lower-layer PCB board, an upper-layer PCB board is arranged above the support rod, an upper electrode is installed in the middle of the upper-layer PCB board, electromagnetic detection Hall sensors are installed on both the lower-layer PCB board and the upper-layer PCB board, a data collector is connected to the electromagnetic detection Hall sensors, and a connection component is installed between the upper electrode and the first fixing ring; A circular groove for the movement of the support rod is formed on the lower-layer PCB board, a first support plate and a second support plate are fixedly connected to the lower-layer PCB board, a fixing rod is fixedly connected to the first support plate, and a second connection plate is fixedly arranged on the fixing rod; The second connection plate is fixedly connected to the upper-layer PCB board, a guiding block is fixedly connected to the second connection plate, the guiding blocks are arranged in two columns at equal intervals on the second connection plate, adjusting components are installed on both the upper-layer PCB board and the lower-layer PCB board, and a clamping component is installed on the adjusting component; The adjusting component includes a rotating ring rotatably installed on the upper-layer PCB board, tightening ropes are fixedly connected to the four circumferences of the rotating ring, the tightening ropes are fixedly connected to both sides of the electromagnetic detection Hall sensor, a fixing plate is fixedly arranged on the upper-layer PCB board, and a damping shaft is fixedly installed on the fixing plate; The clamping component includes a lapping plate fixedly connected to the rotating ring, a plurality of docking grooves are formed on the upper-layer PCB board, a docking rod is slidably installed on the lapping plate, and a support spring is installed between the lapping plate and the docking rod.

2. The portable spot welding electrode neutrality detection device according to claim 1, characterized in that The data collector is fixedly connected to the fixing rod.

3. The portable spot welding electrode neutrality detection device according to claim 2, characterized in that, A fixing block is fixedly connected to the second support plate, a first connection plate is fixedly arranged on the fixing block, the first connection plate is fixedly connected to the upper-layer PCB board, and marking components are installed on both the second support plate and the first support plate.

4. A portable spot welding electrode neutrality detection device according to claim 1, characterized in that, The connection component includes a connecting plate rotatably installed on the first fixing ring, a second fixing ring is rotatably installed on the connecting plate, the second fixing ring is fixedly connected to the upper electrode, a spring button is fixedly arranged on the second fixing ring, a pressing rod is fixedly connected to one side of the upper electrode, an electric push rod is fixedly arranged on the connecting plate, and a pressing plate is fixedly connected to the top of the electric push rod.

5. A portable spot welding electrode neutrality detection device according to claim 4, characterized in that, The pressing plate is rotatably connected to the upper electrode, and the central axis of the upper electrode is collinear with the central axes of the first fixing ring and the second fixing ring.

6. The portable spot welding electrode neutrality detection device according to claim 1, characterized in that, The damping shaft is rotatably connected to the electromagnetic detection Hall sensor, and through holes for the left eccentric circular motion of the electromagnetic detection Hall sensor are formed on both the upper-layer PCB board and the lower-layer PCB board.

7. A portable spot welding electrode neutrality detection device according to claim 6, characterized in that, The connection structures of both the adjusting component and the clamping component with the upper-layer PCB board and the lower-layer PCB board are the same.

8. A portable spot welding electrode neutrality detection device according to claim 3, characterized in that, The marking component includes a moving groove and a groove formed in the second support plate. A marking block is slidably installed in the moving groove. A rubber connecting block is fixedly arranged on the marking block. A moving groove and an extending groove are formed in the second support plate. A convex rod is slidably installed in the extending groove. The convex rod and the support rod are fixedly connected. A scale mark is arranged on the second support plate. A damping block is fixedly arranged in the groove. The connection structures between the marking component and the first support plate and the second support plate are the same.

9. A portable spot welding electrode neutrality detection method, using a portable spot welding electrode neutrality detection device described in claim 1, characterized in that, The steps include: S1: Preparation: Replace the electrode caps of the new upper electrode and lower electrode or use an electrode grinder to grind the electrodes to reduce the influence of the contact surface state of the upper electrode and lower electrode on the magnetic field around the electrodes, and adjust appropriate welding parameters; S2: Install the upper electrode and lower electrode: Install the upper electrode and lower electrode on the lower-layer PCB board and the upper-layer PCB board so that the central axes of the upper electrode and lower electrode are collinear; S3: Detection stage: Select appropriate welding parameters to energize the electrodes. While energizing, use an electromagnetic detection Hall sensor to detect the electrical signal of the magnetic field magnitude around the electrodes, and use a data collector to collect and record each magnetic field electrical signal; S4: Data processing: Use the data collector to process the collected data, judge whether the electrodes are centered, the deviation direction W and magnitude H of the electrodes, and display them on the screen. Alarm processing is performed for those with a centering deviation exceeding the range.

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