Coil resistance welding device

Abstract

The application relates to a coil resistance welding device, which comprises a rack, a driving mechanism comprising a first driving assembly, a second driving assembly and a third driving assembly, the first driving assembly being arranged on the top surface of the rack along the width direction of the rack, the second driving assembly being movably arranged on the first driving assembly along the length direction of the rack, the third driving assembly being arranged above the second driving assembly along the vertical direction, one end of the third driving assembly being provided with a spot welding mechanism and an image acquisition mechanism, and a jig platform being movably arranged at one end of the second driving assembly and used for placing array-arranged coils. The first driving assembly and the second driving assembly are driven to move the jig platform along the X-axis and Y-axis directions, the third driving assembly is driven to move the spot welding mechanism and the image acquisition mechanism along the Z-axis direction, the position adjustment of the coils and the spot welding mechanism is realized, the array-arranged coils are welded, the welding accuracy is improved, the welding efficiency and the welding quality are improved, and the production efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of resistance welding technology for microarray products, and in particular to a coil resistance welding apparatus. Background Technology

[0002] With the rapid development of microarray products, the requirements for the soldering precision of resistors in microarray products (such as headphone coils and IC card induction coils) are becoming increasingly stringent.

[0003] In related technologies, a nine-point calibration method is typically used to complete the welding process of coil resistors. However, this method requires frequent replacement of discharge electrodes or adjustment of product position for recalibration, resulting in a long welding process, cumbersome steps, low welding efficiency, and impact on production flow and efficiency.

[0004] In summary, existing welding equipment suffers from problems such as low welding efficiency, which affects production efficiency. Utility Model Content

[0005] Therefore, it is necessary to provide a coil resistance welding device to address the problems of low welding efficiency and reduced production efficiency of existing welding equipment.

[0006] A coil resistance welding apparatus, comprising:

[0007] frame;

[0008] The drive mechanism includes a first drive component, a second drive component, and a third drive component;

[0009] The first drive assembly is disposed on the top surface of the frame along the width direction of the frame;

[0010] The second drive assembly is movably mounted on the first drive assembly along the length of the frame;

[0011] The third driving component is vertically positioned above the second driving component; one end of the third driving component is provided with a spot welding mechanism and an image acquisition mechanism.

[0012] A fixture platform is movably mounted at one end of the second drive component, and the fixture platform is used to place coils arranged in an array.

[0013] In one embodiment, the image acquisition mechanism is located on one side of the spot welding mechanism; a lighting mechanism is coaxially arranged below the image acquisition mechanism.

[0014] In one embodiment, the image acquisition mechanism is a CCD camera equipped with a telecentric lens; the illumination mechanism uses an LED light source.

[0015] In one embodiment, the CCD camera is disposed on the same side as the spot welding mechanism, and the distance from the CCD camera to the third driving component is greater than the distance from the spot welding mechanism to the third driving component.

[0016] In one embodiment, a fixed bracket is also included, the fixed bracket including two support legs vertically mounted on the top surface of the frame, and a connecting plate is provided between the two support legs; a third drive assembly is vertically mounted on the connecting plate.

[0017] In one embodiment, the first drive assembly, the second drive assembly, and the third drive assembly are respectively provided with a slide rail, a slider, a screw, and a drive motor. One end of the slider is slidably connected to the slide rail, and the other end is connected to the screw. The output end of the drive motor is connected to the screw. The slide rail of the second drive assembly is mounted on the slider of the first drive assembly. The fixture platform is mounted on the slider of the second drive assembly. The lighting mechanism and the spot welding mechanism are mounted on the slider of the third drive assembly via a mounting plate.

[0018] In one embodiment, a pad is mounted on one side surface of the fixture platform, and multiple mounting slots for placing coils are evenly distributed on the pad.

[0019] In one embodiment, the surface of the fixture platform is provided with at least two fixing blocks, which are arranged diagonally and respectively abut against the side of the solder pad.

[0020] In one embodiment, both the fixture platform and the solder pads are square structures; the fixing block is L-shaped, with its two sides abutting against the two sides of the solder pads respectively.

[0021] In one embodiment, an industrial computer and a display are also included, which are respectively mounted vertically on both sides of the third drive assembly.

[0022] The aforementioned coil resistance welding device drives the fixture platform to move along the X and Y axes by driving the first and second drive components. By driving the third drive component to move the spot welding mechanism and image acquisition mechanism along the Z axis, the device adjusts the positions of the coils and the spot welding mechanism, enabling the welding of arrayed coils. This improves welding accuracy, efficiency, and quality, while also simplifying the coil welding process, shortening welding time, and increasing production efficiency. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the coil resistance welding device.

[0024] Figure 2 This is a schematic diagram of the spot welding mechanism and the image acquisition mechanism.

[0025] Figure 3 This is a schematic diagram of the drive mechanism.

[0026] Figure 4 This is a schematic diagram of the fixture platform.

[0027] In the diagram: 10. Frame; 11. Fixed bracket; 111. Support leg; 112. Connecting plate;

[0028] 21. First drive assembly; 22. Second drive assembly; 23. Third drive assembly; 24. Slide rail; 25. Slider; 26. Screw; 27. Drive motor;

[0029] 31. Spot welding mechanism; 32. Image acquisition mechanism; 33. Lighting mechanism;

[0030] 40. Fixture platform; 41. Solder pad; 42. Mounting slot; 43. Fixing block;

[0031] 50. Industrial control computer; 60. Monitor. Detailed Implementation

[0032] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0033] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0034] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0038] Existing welding equipment suffers from problems such as low welding efficiency, which affects production efficiency.

[0039] See Figure 1 , Figure 1 A schematic diagram of the structure of a coil resistance welding apparatus according to an embodiment of this application is shown.

[0040] To address the aforementioned technical problems, one embodiment of this application provides a coil resistance welding apparatus, comprising a frame 10, a drive mechanism, and a fixture platform 40, which enables resistance welding of arrayed coils, thereby improving welding quality and efficiency.

[0041] In this embodiment, the driving mechanism includes a first driving component 21, a second driving component 22, and a third driving component 23. The first driving component 21 is disposed on the top surface of the frame 10 along its width; the second driving component 22 is movably disposed on the first driving component 21 along the length of the frame 10; and the third driving component 23 is vertically disposed above the second driving component 22. One end of the third driving component 23 is provided with a spot welding mechanism 31 and an image acquisition mechanism 32. A fixture platform 40 is movably disposed at one end of the second driving component 22, and the fixture platform 40 is used to place the arrayed coils.

[0042] The frame 10, serving as the supporting framework for the entire device, is made of metal materials such as aluminum alloy or stainless steel to ensure stability. The frame 10 has an overall rectangular frame structure, with a smooth, flat top surface that provides a stable reference surface for the installation of the first drive assembly 21. Four feet are mounted at the bottom of the frame 10, each with a rubber pad to reduce vibration.

[0043] The first drive assembly 21 is disposed on the top surface of the frame 10 along the width direction of the frame 10, that is, it moves along the X-axis direction. The first drive assembly 21 may be driven by a ball screw, a linear motor, or an electric cylinder.

[0044] The second drive assembly 22 is movably mounted on the first drive assembly 21 along the length of the frame 10, i.e., it moves along the Y-axis. The second drive assembly 22 can also be driven by a ball screw, a linear motor, or an electric cylinder. Driven by the first drive assembly 21, the second drive assembly 22 can move along the width of the frame 10, while simultaneously moving linearly along the length of the frame 10. Through the coordinated action of the first drive assembly 21 and the second drive assembly 22, movement in the X and Y axes can be achieved.

[0045] The third drive assembly 23 is vertically positioned above the second drive assembly 22, moving along the Y-axis. The third drive assembly 23 can be driven by a ball screw, a linear motor, or an electric cylinder. One end of the third drive assembly 23 is connected to a mounting bracket for the spot welding mechanism 31 and the image acquisition mechanism 32. The third drive assembly 23 drives the spot welding mechanism 31 and the image acquisition mechanism 32 to move vertically in a linear motion, realizing the downward and upward movements during the welding process.

[0046] The spot welding mechanism 31 includes a welding electrode, an electrode pressure regulating device, and a welding transformer. The welding electrode is made of chromium-zirconium copper. The electrode pressure regulating device adjusts the welding electrode pressure through a spring and screw 26 structure, allowing for appropriate electrode pressure adjustment based on the material and size of different coils to ensure welding quality. The welding transformer provides the required welding current to the spot welding mechanism 31.

[0047] The image acquisition mechanism 32 and the spot welding mechanism 31 are mounted side-by-side on a mounting bracket, employing a high-resolution industrial camera (CCD camera) and lens. The industrial camera has 5 megapixels, capable of clearly capturing image information of the coil. The lens is a telecentric lens with adjustable focal length, which effectively eliminates image distortion and improves the accuracy of image acquisition. The images acquired by the image acquisition mechanism 32 are transmitted to the control system for assisting in coil positioning and welding quality inspection.

[0048] The fixture platform 40 is movably mounted at one end of the second drive assembly 22 and can move along the Y-axis. The surface of the fixture platform 40 is used to place coils arranged in an array. The fixture platform 40 moves along the Y-axis under the drive of the second drive assembly 22, and the second drive assembly 22 and the fixture platform 40 move along the X-axis under the drive of the first drive assembly 21, thereby adjusting the welding position.

[0049] In the specific implementation process, by driving the first driving component 21 and the second driving component 22, the fixture platform 40 is moved along the X-axis and Y-axis directions to adjust the position of the coils on the fixture platform 40. By driving the third driving component 23, the spot welding mechanism 31 and the image acquisition mechanism 32 are moved along the Z-axis direction to adjust the welding position of the coils, thereby realizing the welding of the arrayed coils one by one.

[0050] As described above, the coil resistance welding device uses a drive mechanism to adjust the positions of the fixture platform 40, the spot welding mechanism 31, and the image acquisition mechanism 32, enabling the welding of arrayed coils, improving welding accuracy, efficiency, and quality. Simultaneously, it reduces the number of steps in coil welding, minimizes manual intervention, shortens welding time, and increases production efficiency.

[0051] Combination Figure 2 As shown, Figure 2 This is a schematic diagram of the spot welding mechanism and image acquisition mechanism provided in one embodiment of this application.

[0052] In some embodiments, the image acquisition mechanism 32 is disposed on one side of the spot welding mechanism 31; the image acquisition mechanism 32 is a CCD camera, and the CCD camera is equipped with a telecentric lens.

[0053] Specifically, the image acquisition mechanism 32 uses a CCD camera. The CCD camera has a resolution of 2048*1536 pixels. The CCD camera can clearly capture detailed images of the welding area. A telecentric lens is installed on the CCD camera. The telecentric lens can effectively eliminate perspective distortion and ensure the accuracy of the image size at different working distances. This ensures that, regardless of the position of the coil, the acquired image can truly reflect the actual situation of the welding area during the welding process, improving the accuracy and reliability of the inspection.

[0054] In one embodiment, an illumination mechanism 33 is provided coaxially below the image acquisition mechanism 32; the illumination mechanism 33 uses an LED light source.

[0055] Specifically, the lighting mechanism 33 uses an LED light source. The lighting mechanism 33 and the image acquisition mechanism 32 are coaxially arranged, so that the light can directly illuminate the welding part and coincide with the optical axis of the CCD camera, avoiding the generation of shadows and providing a uniform and bright lighting environment for image acquisition, thereby further improving the image quality.

[0056] In one embodiment, the CCD camera and the spot welding mechanism 31 are disposed on the same side, and the distance from the CCD camera to the third driving component 23 is greater than the distance from the spot welding mechanism 31 to the third driving component 23.

[0057] Specifically, the CCD camera and the spot welding mechanism 31 are set on the same side, so that image acquisition and welding operations can be completed on the same side, reducing the size and improving space utilization.

[0058] The distance from the CCD camera to the third drive component 23 is greater than the distance from the spot welding mechanism 31 to the third drive component 23. During the welding process, the spot welding mechanism 31 needs to be close to the coil for welding operations, while the CCD camera needs to maintain a certain distance to obtain a suitable shooting angle and depth of field. The greater distance allows the CCD camera to capture a larger welding area, while avoiding the influence of welding sparks, high temperatures, and other factors due to excessively close proximity, thus ensuring the normal operation of the camera and image quality.

[0059] Combination Figure 2 As shown, Figure 2 This is a schematic diagram of the spot welding mechanism and image acquisition mechanism provided in one embodiment of this application.

[0060] In some embodiments, the device further includes a fixed bracket 11, which includes two vertically mounted support legs 111 on the top surface of the frame 10, with a connecting plate 112 between the two support legs 111; and a third drive assembly 23 is vertically mounted on the connecting plate 112.

[0061] Specifically, the two support legs 111 are made of metal materials, such as stainless steel. A horizontally arranged connecting plate 112 is provided between the two support legs 111. The connecting plate 112 is fixed to the support legs 111 by welding or bolting to form a frame structure.

[0062] The third drive assembly 23 is vertically mounted on the connecting plate 112 by bolts, which facilitates the drive of the spot welding mechanism 31 to move vertically, that is, along the Z-axis.

[0063] Combination Figure 3 As shown, Figure 3 This is a schematic diagram of the drive mechanism provided in one embodiment of this application. In some embodiments, the first drive assembly 21, the second drive assembly 22, and the third drive assembly 23 are respectively provided with a slide rail 24, a slider 25, a screw 26, and a drive motor 27. One end of the slider 25 is slidably connected to the slide rail 24, and the other end is connected to the screw 26. The output end of the drive motor 27 is connected to the screw 26. The slide rail 24 of the second drive assembly 22 is mounted on the slider 25 of the first drive assembly 21. The fixture platform 40 is mounted on the slider 25 of the second drive assembly 22. The lighting mechanism 33 and the spot welding mechanism 31 are mounted on the slider 25 of the third drive assembly 23 through a mounting plate.

[0064] Specifically, slide rail 24 is a linear guide rail. The top of slider 25 is slidably connected to slide rail 24, allowing it to slide on slide rail 24. The bottom of slider 25 is connected to screw 26, which is a ball screw. The output end of drive motor 27 is connected to screw 26, and drive motor 27 drives screw 26 to rotate, thereby converting rotational motion into linear motion of slider 25.

[0065] The slide rail 24 of the first drive assembly 21 is mounted on the frame 10 along the X-axis. The slide rail 24 of the second drive assembly 22 is mounted on the slider 25 of the first drive assembly 21. The bottom surface of the fixture platform 40 is mounted on the slider 25 of the second drive assembly 22. Through the first drive assembly 21 and the second drive assembly 22, the fixture platform 40 is driven to achieve two-dimensional movement in the horizontal plane.

[0066] The spot welding mechanism 31, the image acquisition mechanism 32, and the lighting mechanism 33 are respectively mounted on the slider 25 of the third drive assembly 23 via mounting plates.

[0067] Combination Figure 4 As shown, Figure 4 This is a schematic diagram of the structure of a fixture platform provided in one embodiment of this application. In some embodiments, a pad 41 is mounted on one side surface of the fixture platform 40, and a plurality of mounting slots 42 for placing coils are evenly distributed on the pad 41.

[0068] Specifically, the solder pads 41 are mounted on the top surface of the fixture platform 40, and multiple mounting slots 42 for placing coils are evenly distributed on the solder pads 41. The mounting slots 42 are square or other shapes. The shape and size of the mounting slots 42 are adjusted according to the specifications of the coils being soldered.

[0069] In one embodiment, the surface of the fixture platform 40 is provided with at least two fixing blocks 43, which are arranged diagonally and respectively abut against the side of the pad 41.

[0070] Specifically, the surface of the fixture platform 40 is provided with at least two fixing blocks 43, which are arranged diagonally. The fixing blocks 43 are made of materials such as hard rubber or plastic, which can provide stable abutment force while avoiding damage to the pads 41. The two fixing blocks 43 abut against the sides of the pads 41 respectively. The diagonal fixing method can position and fix the pads 41 from two different directions, effectively preventing the pads 41 from translating or rotating in the horizontal direction and improving the stability of the pads 41.

[0071] In one embodiment, both the fixture platform 40 and the pad 41 are square structures; the fixing block 43 is L-shaped, with its two sides abutting against the two sides of the pad 41 respectively.

[0072] Specifically, the fixture platform 40 has a square structure and is made of aluminum alloy. The square solder pads 41 also adopt a square structure design to match the fixture platform 40. The solder pads 41 are made of copper-based alloy, which can meet the requirements for current conduction and heat dissipation during resistance welding.

[0073] The fixing block 43 has an L-shaped structure, and the two sides of the L-shaped fixing block 43 are perpendicular to each other.

[0074] Four L-shaped fixing blocks 43 are respectively set at the four corners of the surface of the fixture platform 40 near the square pad 41. The two sides of each fixing block 43 are tightly abutted against the two adjacent sides of the square pad 41. The pad 41 is positioned and fixed from four directions by diagonal cross positioning, which effectively prevents the pad 41 from translating or rotating in the horizontal direction and ensures the stability of the pad 41 during the soldering process.

[0075] In one embodiment, the system also includes an industrial computer 50 and a display 60, which are respectively mounted vertically on both sides of the third drive assembly 23.

[0076] Specifically, the coil resistance welding device also includes an industrial control computer 50, which integrates a control system for receiving image information from the image acquisition mechanism 32, and for controlling the movement of the drive mechanism or controlling the spot welding mechanism 31 to weld the array of coils distributed on the fixture platform 40.

[0077] The display 60 is connected to the industrial computer 50 and is used to display parameter information or image acquisition screens during the welding process, so that operators can understand the welding process, make timely adjustments to the welding process, and ensure welding efficiency.

[0078] In this embodiment, a calibration process based on the aforementioned coil resistance welding apparatus is also provided. Because array-type coil products require frequent electrode replacement during resistance welding, the calibration process is complex and inefficient. If the CCD camera is directly mounted above the welding electrode, i.e., both are in the same coordinate system, the traditional nine-point calibration method can be used. However, if the CCD camera and the welding electrode are far apart, the traditional nine-point calibration method is not applicable, especially in two different coordinate systems, or after replacing the welding electrode.

[0079] The formula for the coordinates of an array-type product photography matrix includes: PX n =X1+(N−1)*D;PY n =Y1+(M−1)*H. Where X1 and Y1 represent the physical coordinates of the first photographed position, serving as the reference starting point. D represents the column spacing, i.e., the distance between adjacent products in the X direction. H represents the row spacing, i.e., the distance between adjacent products in the Y direction. M represents the number of rows, i.e., the number of product rows on the fixture platform 40. N represents the number of columns, i.e., the number of product columns on the fixture platform 40. PX n PY n This represents the physical coordinates of the nth camera position.

[0080] Using the coordinates (X1, Y1) of the first camera position and the array parameters (row spacing, column spacing, number of rows, number of columns), the physical coordinates of all camera positions are calculated to form a matrix coverage.

[0081] Physical coordinate offset correction formula, including: PX n =X1+(N−1)*D+KX n ;PY n =Y1+(M−1)*D+KY n Among them, KX n KY n This represents the X / Y offset of the nth product image feature point. Based on array coordinates, the offset (KX) of the feature point is identified through image recognition. n KY n Correct the actual physical coordinates to eliminate fixture installation errors or product position deviations.

[0082] The array-type product photography matrix coordinate generation includes: placing the array-type coil product on the pad 41 of the fixture platform 40, and fixing the pad 41 by an L-shaped fixing block.

[0083] Move the image acquisition mechanism 32, i.e., the CCD camera, above the first product and record its physical coordinates (X1, Y1).

[0084] Pre-input array parameters (row spacing H, column spacing D, number of rows M, number of columns N).

[0085] The coordinates of all camera positions (PX) are generated using a formula. n PY n This forms a photographic path that covers the entire array.

[0086] A calibration board is used to establish the relationship between product dimensions and pixel coordinates, and to determine the conversion ratio between image feature points and actual physical dimensions.

[0087] The drive mechanism moves sequentially above each product according to the generated matrix coordinates.

[0088] Image acquisition mechanism 32 acquires images of feature points at both ends of the coil.

[0089] The offset (KX) of feature points relative to the reference position is identified using image processing algorithms. n KY n ).

[0090] Combining array coordinates (X1, Y1, D, H, M, N) with offset (KX) n KY n The actual physical coordinates (PX) are calculated using the formula. n PY n ).

[0091] The offset of each feature point relative to the product's reference position is calculated by taking photos sequentially based on the coordinates. The product's reference position needs to be obtained through TCP calibration.

[0092] First, the drive mechanism moves to the first image capture position and aligns the crosshair on the image with the product's reference position. After determining the reference position, the image capture position is recorded, and the control system calculates the image capture matrix coordinates.

[0093] Next, remove the product, take out the calibration card, and move the calibration card so that the crosshair center of the calibration card coincides with the crosshair center of the image.

[0094] Then, the drive mechanism moves to make the TCP point of the welding electrode coincide with the cross center of the calibration card, and records the coordinate value as the reference point of the product.

[0095] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0096] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A coil resistance welding apparatus characterized by comprising: include: Rack (10); The drive mechanism includes a first drive component (21), a second drive component (22), and a third drive component (23); The first drive assembly (21) is disposed on the top surface of the frame (10) along the width direction of the frame (10); The second drive assembly (22) is movably mounted on the first drive assembly (21) along the length of the frame (10); The third driving component (23) is vertically positioned above the second driving component (22); one end of the third driving component (23) is provided with a spot welding mechanism (31) and an image acquisition mechanism (32); A fixture platform (40) is movably disposed at one end of the second drive assembly (22), and the fixture platform (40) is used to place the coils arranged in an array.

2. The coil resistance welding apparatus according to claim 1, characterized by The image acquisition mechanism (32) is located on one side of the spot welding mechanism (31); a lighting mechanism (33) is provided coaxially below the image acquisition mechanism (32).

3. The coil resistance welding apparatus according to claim 2, wherein The image acquisition mechanism (32) is a CCD camera, which is equipped with a telecentric lens; the lighting mechanism (33) uses an LED light source.

4. The coil resistance welding apparatus according to claim 3, wherein The CCD camera and the spot welding mechanism (31) are arranged on the same side, and the distance from the CCD camera to the third driving component (23) is greater than the distance from the spot welding mechanism (31) to the third driving component (23).

5. The coil resistance welding apparatus according to claim 2, wherein It also includes a fixed bracket (11), which includes two support legs (111) mounted vertically on the top surface of the frame (10), and a connecting plate (112) is provided between the two support legs (111); the third drive assembly (23) is mounted vertically on the connecting plate (112).

6. The coil resistance welding apparatus according to claim 2, wherein The first drive assembly (21), the second drive assembly (22), and the third drive assembly (23) are respectively provided with a slide rail (24), a slider (25), a screw (26), and a drive motor (27). One end of the slider (25) is slidably connected to the slide rail (24), and the other end is connected to the screw (26). The output end of the drive motor (27) is connected to the screw (26). The slide rail (24) of the second drive assembly (22) is installed on the slider (25) of the first drive assembly (21). The fixture platform (40) is installed on the slider (25) of the second drive assembly (22). The lighting mechanism (33) and the spot welding mechanism (31) are installed on the slider (25) of the third drive assembly (23) through a mounting plate.

7. The coil resistance welding apparatus according to claim 2, wherein The fixture platform (40) has a solder pad (41) mounted on one side surface, and the solder pad (41) has a plurality of mounting slots (42) evenly distributed on it for placing coils.

8. The coil resistance welding apparatus according to claim 7, wherein The surface of the fixture platform (40) is provided with at least two fixing blocks (43), which are arranged diagonally and respectively abut against the side of the pad (41).

9. The coil resistance welding apparatus according to claim 8, wherein The fixture platform (40) and the pad (41) are both square structures; the fixing block (43) is L-shaped, and the two sides of the fixing block (43) abut against the two sides of the pad (41) respectively.

10. The coil resistance welding apparatus according to claim 2, wherein A work computer (50) and a display (60) are also included, which are respectively installed along the vertical direction on both sides of the third driving assembly (23).

Images