Resistance welding electrode height calibration compensation mechanism and calibration compensation method

Abstract

The application provides a resistance welding electrode height calibration compensation mechanism and a calibration compensation method, relates to the technical field of resistance welding electrode loss detection, and comprises a welding mechanism and a calibration mechanism which are arranged separately. The welding mechanism comprises a bottom plate, a first translation module, a first sliding seat, a connecting plate, a support, a second translation module, a second sliding seat, an upper welding module, an upper electrode, a lower welding module and a lower electrode. The mechanism further comprises a drag chain. The lower electrode moves up and down along the vertical direction under the transmission cooperation of the second translation module, the second sliding seat, an inclined module and the lower welding module. The calibration mechanism comprises a support plate, an upper partition plate, a lower partition plate, a rear partition plate, a support strip, a measurement module, a sensing plate and a contact displacement sensor. The mechanism further comprises a reset member. The contact displacement sensor is in contact with the transmission end of the measurement module. The application can stably, efficiently and accurately detect the electrode height loss and compensate the electrode height.

Description

Technical Field

[0001] This invention relates to the field of resistance welding electrode loss detection technology, and in particular to a resistance welding electrode height calibration and compensation mechanism and calibration and compensation method. Background Technology

[0002] The principle of resistance welding is to apply pressure to the workpiece using electrodes and pass a large current through it. The contact resistance at the workpiece's contact surface generates Joule heat, causing localized melting to form a weld point. As welding progresses, electrode wear is inevitable, primarily manifested as an increase in end-face diameter and a decrease in height. This change in electrode height directly alters the actual pressure applied to the workpiece by the welding mechanism. Insufficient pressure leads to increased contact resistance and spatter, while excessive pressure can deform or even crush the weld point. In some automated welding equipment, if electrode wear is not compensated for, the preset weld point position may deviate from the actual weld point position, affecting welding quality.

[0003] In micro-melting sensor products, the resistance welding electrode between the NTC (Negative Temperature Coefficient) thermistor and the metal terminal is typically manually removed from the equipment periodically to measure its height. This height is then compared with theoretical dimensions to calculate and adjust the electrode position in the welding mechanism, thereby compensating for electrode wear. This entire process is cumbersome, prone to manual measurement and adjustment errors, and significantly impacts equipment production efficiency. Existing technologies also employ electrode pressure monitoring or monitor dynamic resistance during welding to indirectly compensate for electrode wear, but these methods still have limitations and cannot directly and accurately compensate for changes in electrode geometry.

[0004] Therefore, designing a scheme to stably, efficiently, and accurately detect electrode height loss and perform electrode height compensation is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: how to overcome the shortcomings of the prior art and provide a resistance welding electrode height calibration and compensation mechanism and calibration and compensation method that can stably, efficiently and accurately detect electrode height loss and perform electrode height compensation.

[0006] To solve the above technical problem, the present invention provides a resistance welding electrode height calibration and compensation mechanism, comprising a separately arranged welding mechanism and a calibration mechanism. The welding mechanism comprises: a base plate arranged horizontally; a first translation module horizontally arranged on the base plate; a first sliding seat arranged on the top end of the first translation module, and driven by the first translation module to move left and right in the horizontal direction; a connecting plate horizontally arranged in a "convex" structure, and comprising a narrow connecting plate portion and a wide connecting plate portion, wherein the narrow connecting plate portion is fixed to the top end of the first sliding seat, and the wide connecting plate portion extends to the front side of the first sliding seat; a support, wherein the bottom end of the support is fixed to the top end of the narrow connecting plate portion, and the top end of the support extends toward the front side of the support; a second translation module horizontally arranged on the top end of the wide connecting plate portion, and arranged parallel to the first translation module; a second sliding seat arranged on the top end of the second translation module, and driven by the second translation module to move left and right in the horizontal direction; an upper welding module vertically arranged at the extending portion of the top end of the support; an upper electrode arranged at the front side of the upper welding module, and driven by the upper welding module to move up and down in the vertical direction, wherein the welding end of the upper electrode is arranged vertically downward; a lower welding module vertically arranged at the front side of the wide connecting plate portion, and movably connected with the second sliding seat through an oblique module; a lower electrode arranged at the front side of the lower welding module, and driven and cooperated by the second translation module, the second sliding seat, the oblique module and the lower welding module to move up and down in the vertical direction, wherein the welding end of the lower electrode is arranged vertically upward, and arranged opposite to the welding end of the upper electrode; the calibration mechanism is vertically arranged at the right front side of the welding mechanism.

[0007] Optionally, the calibration mechanism comprises: a support plate, an upper partition plate, a lower partition plate, a rear partition plate and a support bar, wherein the support plate is vertically arranged; one end of the upper partition plate is fixed to the top end of the support plate, and the other end extends horizontally toward the rear side of the support plate; one end of the lower partition plate is fixed to the bottom end of the support plate, and the other end extends horizontally toward the front side of the support plate; one end of the rear partition plate is fixed to the rear side of the support plate, and the other end extends horizontally toward the rear side of the support plate; the support bar is arranged in an "L" shaped structure, and is respectively fixed to the front side of the support plate and the top end of the lower partition plate; a measurement module vertically arranged at the rear side of the support plate, with the bottom end fixed to the rear partition plate; an induction plate arranged at the rear side of the measurement module, and driven by the measurement module to move up and down in the vertical direction; a contact displacement sensor vertically arranged above the measurement module through the upper partition plate, and in contact cooperation with the transmission end of the measurement module.

[0008] Optionally, the calibration mechanism further comprises a reset member, the reset member is arranged in a "T" shaped structure. A groove is opened on one side of the support plate, and the reset member is used for fixing the transmission end of the measurement module and the support plate through the groove.

[0009] Optionally, the sensing plate is arranged in an "L" shape and extends horizontally toward the rear side of the measuring module, and the sensing plate is used to contact the welding ends of the upper electrode and the lower electrode respectively.

[0010] Optionally, the inclined module includes: an inclined plate, which is fixed to the front side of the second slide in a right-angled trapezoidal structure and has a groove along its inclined side; the inclined plate moves synchronously with the second slide under the transmission of the second translation module; a cam, one end of which is fixed to the top of the lower welding module and the other end of which is set in the groove in a wheel-shaped structure; the cam slides in the groove when the inclined plate moves and drives the lower welding module carrying the lower electrode to move up and down in the vertical direction under the inclined limit of the groove.

[0011] Optionally, the welding mechanism further includes a cable chain, which is mounted on the base plate and arranged in a "J" shape on the rear side of the first translation module.

[0012] Optionally, one end of the cable chain is connected to the base plate, and the other end is hinged to a baffle; a limit block is provided on the rear side of the first slide; the baffle is used to abut against the limit block when the first slide moves horizontally to the left.

[0013] Optionally, a slider is also provided on the rear side of the first translation module. The slider is fixed to the bottom end of the first slide block by a connecting piece and moves synchronously with the first slide block under the transmission of the first translation module. A limiting member is also provided on the right rear side of the first translation module. The limiting member is used to abut against the slider when the first slide block moves horizontally to the right.

[0014] Optionally, when the first slide moves horizontally to the right until the limiting member abuts against the slider, the upper electrode and the lower electrode are located directly behind the calibration mechanism.

[0015] Optionally, reinforcing plates are provided at both the left and right ends of the lower welding module. The reinforcing plates are arranged in a right-angled trapezoidal structure and are fixed to the rear side of the lower welding module and the bottom of the wide part of the connecting plate, respectively.

[0016] The present invention also provides a calibration compensation method based on the resistance welding electrode height calibration compensation mechanism described above, the method comprising the following steps:

[0017] S1. Upper calibration station: The first translation module drives the first slide block, which carries the upper welding module and the lower welding module and moves horizontally to the right until the limiting component abuts against the slider. The second translation module drives the second slide block, which drives the lower welding module through the oblique module. The lower welding module carries the lower electrode and moves vertically downward a fixed distance to separate the lower electrode from the upper electrode, so that the sensing plate is located between the upper electrode and the lower electrode.

[0018] S2. Electrode height calibration: The reset component removes the fixation of the measuring module, and the measuring module's transmission sensing plate moves up and down in the vertical direction. The sensing plate contacts the welding ends of the upper and lower electrodes respectively. The contact displacement sensor obtains the displacement value of the transmission end of the measuring module. The displacement value is compared with the theoretical value to obtain the electrode height loss. Then, the measuring module's transmission sensing plate returns to its original position, and the reset component restores the fixation of the measuring module.

[0019] S3. Electrode height compensation: The first translation module drives the first slide block, which carries the upper and lower welding modules and returns horizontally to the left. The compensation value is obtained based on the height loss of the upper and lower electrodes. Then, the second translation module drives the second slide block according to the compensation value. The second slide block drives the lower welding module through the oblique module. The lower welding module carries the lower electrode and moves vertically upward to complete the electrode height compensation.

[0020] The present invention adopts the above technical solution and has the following technical effects compared with the prior art:

[0021] (1) The small displacement of the second slide block is transmitted through the sliding fit between the cam and the inclined plate. The action is smooth, the transmission gap and the shaking of the lower welding module are reduced, and the compensation accuracy is improved.

[0022] (2) By setting the inclined module, the second slide block is limited, and the horizontal transmission of the second translation module to the second slide block is converted into the vertical transmission of the lower welding module. It can be driven by the motor installed at the end of the second translation module, effectively transferring the driving device of the lower welding module to a wide and open position for deployment, and realizing intensive design.

[0023] (3) When performing calibration and compensation operations, the lower welding module fixes the upper electrode at its lowest limit position in the vertical direction. During calibration and compensation, only the position of the lower electrode needs to be adjusted, which facilitates the measurement and calculation of electrode height loss.

[0024] (4) By setting the reinforcing plate, the lower welding module is further secured to the wide part of the connecting plate, thereby improving the lateral stability of the lower welding module when it moves under the transmission of the inclined module.

[0025] (5) By setting the reset component, the transmission end of the measuring module is fixed in the same position at the beginning of each calibration operation, ensuring the consistency of the initial position of the sensing plate and facilitating accurate measurement of electrode height loss;

[0026] (6) The drag chain is not only used for cable routing, but also provides the leftmost movement limit for the first slide block through its baffle. The limit position of the baffle can be adjusted through the hinge end between the drag chain and the baffle. The baffle and the limit block are in contact and cooperate, and no additional limit device is required to prevent the first slide block from colliding with the motor located at the end of the translation module.

[0027] (7) By setting the slider and the limiting component, the upper electrode and the lower electrode are moved to the extreme position of the calibration mechanism along with the first slide and set at the calibration station directly behind the calibration mechanism. The limiting component and the slider are in contact and cooperate to ensure that the upper electrode and the lower electrode are accurately moved to the calibration station in each calibration operation without additional positioning operation, thus improving efficiency. Attached Figure Description

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] Figure 1 This is a schematic diagram of the resistance welding electrode height calibration and compensation mechanism in this invention;

[0030] Figure 2 yes Figure 1 Enlarged view of section A;

[0031] Figure 3 This is a rear view of the resistance welding electrode height calibration and compensation mechanism in this invention;

[0032] Figure 4 yes Figure 3 Enlarged view of section B;

[0033] Figure 5 yes Figure 3 Enlarged view of section C;

[0034] Figure 6 yes Figure 3 A schematic diagram after removing the calibration mechanism, support, and upper welding mechanism;

[0035] Figure 7 This is a schematic diagram of the connecting plate in this invention;

[0036] Figure 8 This is a schematic diagram of the transmission and engagement of the second translation module, the second slide block, the inclined module, and the lower welding module in this invention;

[0037] Figure 9 yes Figure 8 A schematic diagram of the D-direction view;

[0038] Figure 10 This is a schematic diagram showing the fixing of the reset component, support plate, and measuring module in this invention;

[0039] Figure 11 This is a schematic diagram of the slider and limiting component in this invention;

[0040] Figure 12 yes Figure 11 Enlarged view of section E in the middle.

[0041] The annotations in the attached figures are explained as follows:

[0042] 100. Welding mechanism; 110. Base plate; 120. First translation module; 121. First slide block; 122. Limiting block; 123. Slider; 124. Connecting piece; 125. Limiting component; 130. Connecting plate; 131. Narrow part of connecting plate; 132. Wide part of connecting plate; 140. Bracket; 150. Second translation module; 151. Second slide block; 160. Upper welding module; 161. Upper electrode; 170. Lower welding module; 171. Lower electrode; 172. Reinforcing plate; 180. Cable chain; 181. Baffle;

[0043] 200. Calibration mechanism; 210. Support plate; 211. Upper partition; 212. Lower partition; 213. Rear partition; 214. Support bar; 215. Groove; 220. Measuring module; 221. Sensing plate; 230. Contact displacement sensor; 240. Reset component;

[0044] 300, Inclined module; 310, Inclined plate; 311, Slide groove; 320, Cam. Detailed Implementation

[0045] The present invention will now be further described in conjunction with the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention in a schematic manner, and therefore only show the components relevant to the invention.

[0046] Example 1

[0047] like Figures 1-7As shown, this embodiment provides a resistance welding electrode height calibration and compensation mechanism, comprising a separately arranged welding mechanism 100 and a calibration mechanism 200. The welding mechanism 100 comprises a base plate 110, a first translation module 120, a first sliding seat 121, a connecting plate 130, a support 140, a second translation module 150, a second sliding seat 151, an upper welding module 160, an upper electrode 161, a lower welding module 170 and a lower electrode 171. The base plate 110 is horizontally arranged, and the first translation module 120 is horizontally arranged on the base plate 110. The first sliding seat 121 is arranged at the top end of the first translation module 120. The connecting plate 130 is of a convex structure and horizontally arranged, and comprises a narrow connecting plate portion 131 and a wide connecting plate portion 132. The narrow connecting plate portion 131 is fixed at the top end of the first sliding seat 121, and the wide connecting plate portion 132 extends to the front side of the first sliding seat 121. The bottom end of the support 140 is fixed at the top end of the narrow connecting plate portion 131, and the top end of the support 140 extends toward the front side thereof. The second translation module 150 is horizontally arranged at the top end of the wide connecting plate portion 132, and is arranged parallel to the first translation module 120. The second sliding seat 151 is arranged at the top end of the second translation module 150. The upper welding module 160 is vertically arranged at the extension portion of the top end of the support 140. The upper electrode 161 is arranged at the front side of the upper welding module 160, and moves vertically up and down under the transmission of the upper welding module 160, and the welding end of the upper electrode 161 is arranged vertically downward. The lower welding module 170 is vertically arranged at the front side of the wide connecting plate portion 132, and is movably connected with the second sliding seat 151 via an oblique module 300. The lower electrode 171 is arranged at the front side of the lower welding module 170, and the welding end of the lower electrode 171 is arranged vertically upward, and is arranged opposite to the welding end of the upper electrode 161. The calibration mechanism 200 is vertically arranged at the right front side of the welding mechanism 100.

[0048] The first sliding seat 121 moves horizontally left and right under the transmission of the first translation module 120, and the second sliding seat 151 moves horizontally left and right under the transmission of the second translation module 150. Both the first translation module 120 and the second translation module 150 can be driven by motors installed at respective ends thereof. After the second translation module 150 is connected with the first sliding seat 121 via the connecting plate 130, it moves synchronously in the horizontal direction along with the first sliding seat 121 under the transmission of the first translation module 120. Similarly, the upper welding mechanism 160 is connected with the first sliding seat 121 via the support 140 and the connecting plate 130, and the lower welding mechanism 170 is connected with the first sliding seat 121 via the oblique module 300, the second sliding seat 151, the second translation module 150 and the connecting plate 130, so both the upper welding mechanism 160 and the lower welding mechanism 170 move synchronously in the horizontal direction along with the first sliding seat 121.

[0049] The upper electrode 161 moves vertically up and down under the drive of the upper welding module 160. The upper welding module 160 can be driven by a lead screw module mounted on it. During welding operations, if the distance between the upper electrode 161 and the lower electrode 171 is too small, the welding module 160 drives the upper electrode 161 to move vertically upward, further separating the upper electrode 161 and the lower electrode 171, making it easier for the workpiece to be welded to enter.

[0050] like Figure 3 , Figure 4 , Figure 6 and Figure 8 As shown, the lower electrode 171 moves vertically up and down under the transmission cooperation of the second translation module 150, the second slide block 151, the inclined module 300, and the lower welding module 170. Specifically, the inclined module 300 includes an inclined plate 310 and a cam 320. The inclined plate 310 is fixed to the front side of the second slide block 151 in a right-angled trapezoidal structure, and a groove 311 is formed along its inclined side. One end of the cam 320 is fixed to the top of the lower welding module 170, and the other end is set in the groove 311 in a wheel-shaped structure. The inclined plate 310 moves synchronously with the second slide block 151 under the transmission of the second translation module 150. When the inclined plate 310 moves, the cam 320 slides in the groove 311, and under the inclined limit of the groove 311, it drives the lower welding module 170 to carry the lower electrode 171 up and down in the vertical direction. The sliding engagement between the cam 320 and the inclined plate 310 enables the transmission of minute displacements to the second slide block 151, resulting in smooth operation, reduced transmission clearance and wobbling of the lower welding module 170, and improved compensation accuracy.

[0051] The space below the lower welding module 170 is relatively small, making it inconvenient to integrate the drive device. The space above is also quite compact due to the constraints imposed by the upper welding module 160, making it difficult to drive the lower welding module 170 using a lead screw module similar to the upper welding module 160. By setting up the inclined module 300, the second slide block 151 is limited, and the horizontal transmission of the second translation module 150 to the second slide block 151 is converted into a vertical transmission to the lower welding module 170. This can be driven by a motor installed at the end of the second translation module 150, effectively transferring the drive device of the lower welding module 170 to a more spacious location for deployment, achieving a compact design.

[0052] When the inclined plate 310 tilts from the upper left to the lower right, the slide groove 311 also tilts from the upper left to the lower right. During calibration, if it is necessary to further separate the upper electrode 161 and the lower electrode 171, the inclined plate 310 moves horizontally to the left along with the second slide block 151, the limiting height of the slide groove 311 decreases, and the cam 320 drives the welding module 170 to move the lower electrode 171 vertically downward. During compensation, the inclined plate 310 moves horizontally to the right along with the second slide block 151, the limiting height of the slide groove 311 increases, and the cam 320 drives the welding module 170 to move the lower electrode 171 vertically upward.

[0053] During calibration and compensation operations, the lower welding module 160 fixes the upper electrode 161 at its lowest vertical position. During calibration and compensation, only the position of the lower electrode 171 needs to be adjusted, which facilitates the measurement and calculation of electrode height loss.

[0054] like Figures 8-9 As shown, reinforcing plates 172 are provided at both ends of the lower welding module 170. The reinforcing plates 172 are arranged in a right-angled trapezoidal structure and are fixed to the rear side of the lower welding module 170 and the bottom end of the connecting plate width 132, respectively. By setting the reinforcing plates 172, the lower welding module 170 is further secured to the connecting plate width 132, improving the lateral stability of the lower welding module 170 when it moves under the transmission of the inclined module 300.

[0055] like Figure 1 and Figure 3 As shown, the calibration mechanism 200 includes a support plate 210, an upper partition 211, a lower partition 212, a rear partition 213, a support bar 214, a measuring module 220, a sensing plate 221, and a contact displacement sensor 230. The support plate 210 is vertically arranged. One end of the upper partition 211 is fixed to the top of the support plate 210, and the other end extends horizontally towards the rear of the support plate 210. One end of the lower partition 212 is fixed to the bottom of the support plate 210, and the other end extends horizontally towards the front of the support plate 210. One end of the rear partition 213 is fixed to the rear of the support plate 210, and the other end extends horizontally towards the rear of the support plate 210. The support bar 214 is arranged in an "L" shape and is fixed to the front of the support plate 210 and the top of the lower partition 212, respectively. The measuring module 220 is vertically arranged behind the support plate 210, and its bottom end is fixed to the rear partition 213. The sensing plate 221 is disposed on the rear side of the measuring module 220 and moves vertically up and down under the drive of the measuring module 220. The contact displacement sensor 230 is vertically disposed above the measuring module 220 via the upper partition 211 and is in contact with the drive end of the measuring module 220.

[0056] like Figure 1 , Figure 3 and Figure 10As shown, the calibration mechanism 200 also includes a reset member 240, which is arranged in a "T" shape. A groove 215 is provided on one side of the support plate 210, and the reset member 240 is used to fix the transmission end of the measurement module 220 to the support plate 210 through the groove 215. By setting the reset member 240, the transmission end of the measurement module 220 is fixed in the same position at the beginning of each calibration operation, ensuring the consistency of the initial position of the sensing plate 221 and facilitating accurate measurement of electrode height loss.

[0057] like Figure 1 , Figure 3 and Figure 5 As shown, the welding mechanism 100 also includes a cable chain 180. The cable chain 180 is mounted on the base plate 110 and is arranged in a "J" shape at the rear of the first translation module 120. Specifically, one end of the cable chain 180 is connected to the base plate 110, and the other end is hinged to a baffle 181. A limit block 122 is provided at the rear of the first slide block 121, and the baffle 181 is used to abut against the limit block 122 when the first slide block 121 moves horizontally to the left. The cable chain 180 is not only used for cable routing, but also provides a leftmost movement limit for the first slide block 121 through its baffle 181. The limit position of the baffle 181 can be adjusted through the hinged end between the cable chain 180 and the limit block 122. The baffle 181 and the limit block 122 are in contact and engaged, eliminating the need for additional limiting devices and preventing the first slide block 121 from colliding with the motor located at the end of the first translation module 120.

[0058] like Figures 11-12 As shown, a slider 123 is also provided on the rear side of the first translation module 120. The slider 123 is fixed to the bottom end of the first slide block 121 through a connecting piece 124, and moves synchronously with the first slide block 121 under the transmission of the first translation module 120. A limiting member 125 is also provided on the rear right end of the first translation module 120. The limiting member 125 is used to abut against the slider 123 when the first slide block 121 moves horizontally to the right.

[0059] When the first slide block 121 moves horizontally to the right until the limiting member 125 abuts against the slider 123, the upper electrode 161 and the lower electrode 171 are located directly behind the calibration mechanism 200. By setting the slider 123 and the limiting member 125, the upper electrode 161 and the lower electrode 171 are positioned at their extreme positions as they move towards the calibration mechanism 200 along with the first slide block 121, at the calibration station directly behind the calibration mechanism 200. The limiting member 125 engages with the slider 123, ensuring that the upper electrode 161 and the lower electrode 171 accurately move to the calibration station in each calibration operation, eliminating the need for additional positioning operations and improving efficiency.

[0060] Example 2

[0061] This embodiment provides a calibration compensation method based on the resistance welding electrode height calibration compensation mechanism provided in Embodiment 1 above. The method includes the following steps:

[0062] S1. Upper calibration station: The first translation module 120 drives the first slide block 121. The first slide block 121 carries the upper welding module 160 and the lower welding module 170 and moves horizontally to the right until the limiting member 125 abuts against the slider 123. The second translation module 150 drives the second slide block 151. The second slide block 151 drives the lower welding module 170 through the inclined module 300. The lower welding module 170 carries the lower electrode 171 and moves vertically downward a fixed distance to separate the lower electrode 171 from the upper electrode 161, so that the sensing plate 221 is located between the upper electrode 161 and the lower electrode 171.

[0063] S2. Electrode height calibration: The reset component 240 removes the fixation of the measuring module 220, and the measuring module 220 moves the transmission sensing plate 221 up and down in the vertical direction. The sensing plate 221 contacts the welding ends of the upper electrode 161 and the lower electrode 171 respectively. The contact displacement sensor 230 obtains the displacement value of the transmission end of the measuring module 220. The displacement value is compared with the theoretical value to obtain the electrode height loss. Then the transmission sensing plate 221 of the measuring module 220 returns to its original position, and the reset component 240 restores the fixation of the measuring module 220.

[0064] S3. Electrode height compensation: The first translation module 120 drives the first slide block 121. The first slide block 121 carries the upper welding module 160 and the lower welding module 170 and returns horizontally to the left. The compensation value is obtained based on the height loss of the upper electrode 161 and the height loss of the lower electrode 171. Then, the second translation module 150 drives the second slide block 151 according to the compensation value. The second slide block 151 drives the lower welding module 170 through the oblique module 300. The lower welding module 170 carries the lower electrode 171 and moves vertically upward to complete the electrode height compensation.

[0065] For example, in step S2, firstly, the measuring module 220 moves the sensing plate 221 vertically upward until the sensing plate 221 contacts the welding end of the upper electrode 161. At this time, the displacement value of the measuring module 220's transmission end is X1a, and the theoretical value corresponds to X1b. Subsequently, the measuring module 220 moves the sensing plate 221 vertically downward until the sensing plate 221 contacts the welding end of the lower electrode 171. At this time, the displacement value of the measuring module 220's transmission end is X2a, and the theoretical value corresponds to X2b. The welding end of the upper electrode 161 wears upward, and the welding end of the lower electrode 171 wears downward; therefore, X1a is greater than X1b, and X2a is greater than X2b. The contact displacement sensor 230 uploads displacement values ​​d1a and d2a to the controller. The controller compares and calculates the displacement values ​​d1a and d2a with the theoretical values ​​d1b and d2b, respectively, to obtain the total height loss of the upper and lower electrodes X = X2a - X2b, the upper electrode height loss X1 = X1a - X1b, and the lower electrode height loss X2 = X - X1. In step S3, the compensation value is the total height loss X of the upper and lower electrodes. The control circuit of the above controller can be implemented by simple programming by those skilled in the art; the specific circuit connection and control principle will not be explained in detail here.

[0066] Of course, in step S2, the measuring module 220 can first make the sensing plate 221 contact with the lower electrode 171, and then make the sensing plate 221 contact with the upper electrode 161. The corresponding measurement and calculation process is similar to the above process, and will not be repeated here.

[0067] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A resistance welding electrode height calibration and compensation mechanism, characterized in that, Comprising a separately arranged welding mechanism (100) and a calibration mechanism (200), wherein the welding mechanism (100) comprises: a base plate (110) arranged horizontally; a first translation module (120) arranged horizontally on the base plate (110); a first sliding seat (121) arranged at the top end of the first translation module (120) and driven by the first translation module (120) to move left and right in the horizontal direction; a connecting plate (130) arranged horizontally in a "convex"-shaped structure, comprising a narrow connecting plate portion (131) and a wide connecting plate portion (132), wherein the narrow connecting plate portion (131) is fixed to the top end of the first sliding seat (121), and the wide connecting plate portion (132) extends to the front side of the first sliding seat (121); a support (140), wherein the bottom end of the support (140) is fixed to the top end of the narrow connecting plate portion (131), and the top end of the support (140) extends toward the front side thereof; a second translation module (150) arranged horizontally at the top end of the wide connecting plate portion (132) and arranged parallel to the first translation module (120); a second sliding seat (151) arranged at the top end of the second translation module (150) and driven by the second translation module (150) to move left and right in the horizontal direction; an upper welding module (160) vertically arranged at the extending portion of the top end of the support (140); an upper electrode (161) arranged at the front side of the upper welding module (160) and driven by the upper welding module (160) to move up and down in the vertical direction, wherein the welding end of the upper electrode (161) is arranged vertically downward; a lower welding module (170) vertically arranged at the front side of the wide connecting plate portion (132) and movably connected to the second sliding seat (151) via an oblique module (300); a lower electrode (171) arranged at the front side of the lower welding module (170), and driven to move up and down in the vertical direction under the transmission cooperation of the second translation module (150), the second sliding seat (151), the oblique module (300) and the lower welding module (170), wherein the welding end of the lower electrode (171) is arranged vertically upward and arranged opposite to the welding end of the upper electrode (161); the calibration mechanism (200) is vertically arranged at the right front side of the welding mechanism (100); the calibration mechanism (200) comprises: The support plate (210), upper partition (211), lower partition (212), rear partition (213), and support strip (214) are provided. The support plate (210) is vertically arranged. One end of the upper partition (211) is fixed to the top of the support plate (210), and the other end extends horizontally toward the rear side of the support plate (210). One end of the lower partition (212) is fixed to the bottom of the support plate (210), and the other end extends horizontally toward the front side of the support plate (210). One end of the rear partition (213) is fixed to the rear side of the support plate (210), and the other end extends horizontally toward the rear side of the support plate (210). The support strip (214) is arranged in an "L" shape and is fixed to the front side of the support plate (210) and the top of the lower partition (212) respectively. The measuring module (220) is vertically arranged on the rear side of the support plate (210), and its bottom end is fixed to the rear partition plate (213); The sensing plate (221) is disposed on the rear side of the measuring module (220) and moves up and down in the vertical direction under the transmission of the measuring module (220); A contact displacement sensor (230) is vertically mounted above the measuring module (220) via the upper partition (211) and is in contact with the transmission end of the measuring module (220).

2. The resistance welding electrode height calibration and compensation mechanism according to claim 1, characterized in that, The calibration mechanism (200) also includes a reset component (240), which is arranged in a "T" shape. A groove (215) is provided on one side of the support plate (210), and the reset component (240) is used to fix the transmission end of the measurement module (220) to the support plate (210) through the groove (215).

3. The resistance welding electrode height calibration and compensation mechanism according to claim 1, characterized in that, The sensing plate (221) is arranged in an "L" shape and extends horizontally toward the rear side of the measuring module (220). The sensing plate (221) is used to contact the welding ends of the upper electrode and the lower electrode respectively.

4. The resistance welding electrode height calibration and compensation mechanism according to claim 1, characterized in that, The oblique module (300) includes: An inclined plate (310) is fixed to the front side of the second slide block (151) in the form of a right-angled trapezoid and has a groove (311) along its inclined side; the inclined plate (310) moves synchronously with the second slide block (151) under the transmission of the second translation module (150); The cam (320) has one end fixed to the top of the lower welding module (170) and the other end is set in the slide groove (311) in a wheel-shaped structure. When the inclined plate (310) moves, the cam (320) slides in the slide groove (311) and drives the lower welding module (170) to move the lower electrode (171) vertically under the oblique limit of the slide groove (311).

5. The resistance welding electrode height calibration and compensation mechanism according to claim 1, characterized in that, The welding mechanism (100) also includes a cable chain (180), which is mounted on the base plate (110) and arranged in a "J" shape on the rear side of the first translation module (120).

6. The resistance welding electrode height calibration and compensation mechanism according to claim 5, characterized in that, One end of the drag chain (180) is connected to the base plate (110), and the other end is hinged to a baffle (181); a limit block (122) is provided on the rear side of the first slide (121); the baffle (181) is used to abut against the limit block (122) when the first slide (121) moves horizontally to the left.

7. The resistance welding electrode height calibration and compensation mechanism according to claim 1, characterized in that, A slider (123) is also provided on the rear side of the first translation module (120). The slider (123) is fixed to the bottom end of the first slide block (121) by a connecting piece (124) and moves synchronously with the first slide block (121) under the transmission of the first translation module (120). A limiting member (125) is also provided on the right rear side of the first translation module (120). The limiting member (125) is used to abut against the slider (123) when the first slide block (121) moves horizontally to the right.

8. The resistance welding electrode height calibration and compensation mechanism according to claim 7, characterized in that, When the first slide (121) moves horizontally to the right until the limiting member (125) abuts against the slider (123), the upper electrode (161) and the lower electrode (171) are located directly behind the calibration mechanism (200).

9. The resistance welding electrode height calibration and compensation mechanism according to claim 1, characterized in that, The lower welding module (170) is provided with reinforcing plates (172) at both ends. The reinforcing plates (172) are arranged in a right trapezoidal structure and are fixed to the rear side of the lower welding module (170) and the bottom end of the wide part (132) of the connecting plate, respectively.

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