A welding strip device

Abstract

This utility model relates to the field of welding equipment technology, specifically disclosing a strip welding device, including a frame on which a welding assembly, a welding table, and a rotary dual-station mechanism are mounted. The welding assembly includes a gantry frame slidably mounted on the top of the frame, a welding head disposed within the gantry frame, and a dynamic pressure compensation mechanism connecting the welding head and the gantry frame. The gantry frame spans across the welding table, which is located directly below the welding head. The dynamic pressure compensation mechanism includes a pressure sensor mounted on the welding head and a lifting device slidably mounted on the top of the gantry frame. This strip welding device, through the combination of closed-loop dynamic pressure compensation and a high-precision rotary indexing dual-station mechanism, significantly improves the consistency of welding quality and production efficiency, while solving the problems of incomplete welds / damage caused by uneven pressure and low single-station loading and unloading efficiency in traditional welding.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, and specifically discloses a welding strip welding device. Background Technology

[0002] In the manufacturing of photovoltaic modules, integrated circuits, and other related industries, the welding quality of the solder strip directly affects the conductivity and structural stability of the product. Traditional solder strip welding equipment mostly adopts a single-station operation mode, requiring machine stoppage for loading and unloading operations during the welding process, resulting in low production efficiency and making it difficult to meet the needs of large-scale industrial production. Meanwhile, existing welding equipment suffers from insufficient precision in controlling welding pressure. The unstable pressure between the welding head and the workpiece easily leads to problems such as incomplete welds and over-welding, affecting welding quality. Furthermore, the lack of real-time monitoring and control of welding temperature further exacerbates the instability of welding quality. Moreover, traditional equipment has low material loading and positioning accuracy, making the workpiece prone to displacement during welding, resulting in welding position deviations and reducing product yield. Utility Model Content

[0003] This utility model proposes a welding strip welding device that improves production efficiency through a rotary dual-station mechanism, ensures welding quality through a dynamic pressure compensation mechanism and temperature monitoring and control, enhances positioning accuracy through a precise positioning structure, protects the workpiece and ensures operational safety, and meets the needs of large-scale industrial production.

[0004] This utility model is implemented as follows: a welding strip welding device includes a frame, on which welding components, a welding table and a rotary dual-station mechanism are arranged. The welding assembly includes a gantry frame slidably mounted on top of the frame, a welding head disposed within the gantry frame, and a dynamic pressure compensation mechanism connecting the welding head and the gantry frame. The gantry frame spans across the welding table, which is located directly below the welding head. The dynamic pressure compensation mechanism includes a pressure sensor mounted on the welding head, a lifting device slidably mounted on the top of the gantry frame, and a controller mounted on top of the gantry frame. The output end of the lifting device is rigidly connected to the top of the pressure sensor via a flange, and the bottom end of the pressure sensor is connected to the welding head via a ball joint structure. The controller receives real-time detection signals from the pressure sensor and controls the extension and retraction of the lifting device. The rotary dual-station mechanism includes a rotary table rotatably mounted on the frame and located to the side of the welding table, and a drive motor mounted on the frame that drives the rotary table to rotate intermittently; the top of the rotary table is flush with the top of the welding table; the bottom center of the rotary table is rigidly connected to the output shaft of the drive motor; two material carriers are symmetrically arranged on the top of the rotary table, and the drive motor drives the rotary table to rotate intermittently by 180° so that the two material carriers alternately align with the welding components located above the welding table.

[0005] As a preferred embodiment of the welding strip device of this utility model, the top surface of the rotary table is symmetrically provided with dovetail grooves, a linear driver is provided in the dovetail grooves, the output end of the linear driver is connected to a dovetail slider, the upper end of the dovetail slider is detachably connected to the bottom of one side of the material carrier, and the linear driver is a cylinder or an electric push rod.

[0006] As a preferred embodiment of the welding strip device of this utility model, the material loading area of ​​the material loading platform is provided with a positioning slot, and an elastic buffer pad is embedded in the positioning slot, the thickness of the elastic buffer pad being 0.5-2mm.

[0007] In a preferred embodiment of the welding strip welding device of this utility model, a temperature sensor is provided at the end of the welding head, and the temperature sensor is electrically connected to the temperature control module of the welding assembly.

[0008] As a preferred embodiment of the welding strip device of this utility model, the bottom edge of the rotary table is provided with an annular guide rail, and the top of the frame is provided with a guide groove that slides in cooperation with the annular guide rail.

[0009] As a preferred embodiment of the welding strip device of this utility model, the drive motor is a servo motor with an absolute encoder; the intermittent rotation angle of the rotary table is 180°, and the rotation positioning accuracy is ≤±0.05mm.

[0010] As a preferred embodiment of the welding strip device of this utility model, the lifting device is an electric push rod, a servo cylinder or a ball screw module.

[0011] The beneficial effects of this utility model are: 1. The rotary dual-station mechanism combined with the linear drive material transfer design enables parallel welding loading and unloading operations; when one material carrier is pushed to the welding station by the linear driver to complete welding, the other material carrier can simultaneously load and unload workpieces without stopping the machine, thus increasing the welding volume per unit time. The dynamic pressure compensation mechanism monitors the welding pressure in real time through a pressure sensor. The controller adjusts the extension and retraction of the lifting device in real time based on the feedback signal. Combined with the adaptive angle compensation of the ball joint structure, it ensures that the welding pressure deviation is ≤±0.5N, effectively avoiding defects such as incomplete welding and over-welding.

[0012] 2. The rigid fit between the dovetail groove and the dovetail slider, combined with the micron-level displacement control of the linear actuator, ensures that the positioning error of the material stage being transferred to the welding stage is ≤ ±0.03mm; the positioning accuracy of the rotary table during 180° intermittent rotation is ≤ ±0.05mm. With these dual safeguards, the welding position deviation is controlled within 0.1mm.

[0013] 3. The positioning slot of the loading platform is embedded with a 0.5-2mm elastic buffer pad, which not only achieves stable positioning of the workpiece through interference fit, but also absorbs the impact of the welding head descending, reducing the risk of indentation and deformation on the workpiece surface. It is especially suitable for brittle materials or precision parts. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a side view of the welding assembly of this utility model.

[0017] Figure 3 This is a schematic diagram of the structure of the annular guide rail and guide groove of this utility model.

[0018] Figure 4 This is a cross-sectional view of the material carrier platform of this utility model.

[0019] The markings in the diagram are: 1. Frame; 2. Welding assembly; 3. Welding table; 4. Rotary dual-station mechanism; 5. Gantry; 6. Welding head; 7. Pressure sensor; 8. Lifting device; 9. Controller; 10. Rotary table; 11. Drive motor; 12. Carrying platform; 13. Dovetail groove; 14. Linear actuator; 15. Dovetail slider; 16. Positioning slot; 17. Elastic buffer pad; 18. Temperature sensor; 19. Circular guide rail; 20. Guide chute. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0021] Please see Figure 1-4 A welding strip welding device includes a frame 1, on which a welding assembly 2, a welding table 3 and a rotary double-station mechanism 4 are mounted. The welding assembly 2 includes a gantry 5 slidably mounted on the top of the frame 1, a welding head 6 disposed within the gantry 5, and a dynamic pressure compensation mechanism connecting the welding head 6 and the gantry 5. The gantry 5 is positioned across the welding table 3, which is located directly below the welding head 6. The dynamic pressure compensation mechanism includes a pressure sensor 7 mounted on the welding head 6, a lifting device 8 slidably mounted on the top of the gantry 5, and a controller 9 mounted on the top of the gantry 5. The output end of the lifting device 8 is rigidly connected to the top of the pressure sensor 7 via a flange, and the bottom end of the pressure sensor 7 is connected to the welding head 6 via a ball joint structure. The controller 9 receives the real-time detection signal from the pressure sensor 7 and controls the extension and retraction of the lifting device 8. The rotary dual-station mechanism 4 includes a rotary table 10 rotatably mounted on the frame 1 and located to the side of the welding table 3, and a drive motor 11 mounted on the frame 1 to drive the rotary table 10 to rotate intermittently; the top of the rotary table 10 is flush with the top of the welding table 3; the bottom center of the rotary table 10 is rigidly connected to the output shaft of the drive motor 11; two material carriers 12 are symmetrically arranged on the top of the rotary table 10, and the drive motor 11 drives the rotary table 10 to rotate intermittently by 180° so that the two material carriers 12 are alternately aligned with the welding assembly 2 located above the welding table 3.

[0022] In this embodiment: the drive motor 11 drives the rotary table 10 to rotate intermittently by 180°, so that the two loading platforms 12 alternately occupy the welding position and the loading and unloading position; the loading platform 12 in the welding position slides along the dovetail groove 13 to the surface of the welding platform 3 through the cooperation of the dovetail slider 15 and the linear driver 14, so as to achieve precise alignment between the workpiece and the welding head 6; the loading platform 12 in the loading and unloading position simultaneously changes the workpiece, forming a continuous cycle of welding or loading and unloading; during welding, the pressure sensor 7 collects the pressure signal between the welding head 6 and the workpiece in real time, and the controller 9 compares the detected value with the set value and drives the lifting device 8 to extend and retract; through the rigid transmission of the flange and the flexible connection of the ball joint structure, the real-time pressure transmission is ensured, and the welding head 6 is allowed to adaptively adjust the angle within the range of ±3°, so as to ensure that the pressure is applied evenly to the welding surface, thus achieving the dual goals of high-efficiency operation and high-precision welding, and solving the pain points of low efficiency and unstable pressure of traditional single-station equipment; A protective cover is installed on the frame 1. A transparent observation window is installed on the protective cover corresponding to the position of the welding component 2. The protective cover and the transparent observation window are not shown in the figure. The protective cover and the transparent observation window play a safety protection role, protecting the safety of the operator and facilitating the observation of the welding process, thereby improving the safety of the device and the convenience of operation.

[0023] As a technical optimization of this utility model, the top surface of the rotary table 10 is symmetrically provided with a dovetail groove 13, and a linear driver 14 is provided in the dovetail groove 13. The output end of the linear driver 14 is connected to a dovetail slider 15. The upper end of the dovetail slider 15 is detachably connected to the bottom of one side of the loading platform 12. The linear driver 14 is a cylinder or an electric push rod.

[0024] In this embodiment, the dovetail groove 13, the linear actuator 14 and the dovetail slider 15 work together to achieve fine adjustment of the position of the loading platform 12, improve the positioning accuracy of the workpiece, further ensure the accuracy of the welding position, and thus improve the welding quality.

[0025] As a technical optimization of this utility model, the loading area of ​​the loading platform 12 is provided with a positioning slot 16, and an elastic buffer pad 17 is embedded in the positioning slot 16. The thickness of the elastic buffer pad 17 is 0.5-2mm.

[0026] In this embodiment: the positioning slot 16 ensures accurate placement of the workpiece, the elastic buffer pad 17 protects the surface of the workpiece, reduces impact damage, and at the same time ensures the stability of the workpiece during welding, thereby improving the product qualification rate.

[0027] As a technical optimization of this utility model, a temperature sensor 18 is provided at the end of the welding head 6, and the temperature sensor 18 is electrically connected to the temperature control module of the welding assembly 2.

[0028] In this embodiment: a temperature sensor 18 is installed on the welding head 6 and electrically connected to the temperature control module, which realizes real-time monitoring and control of the welding temperature, avoids welding quality problems caused by excessively high or low temperatures, and further ensures the stability of welding quality. The temperature sensor 18 is a K-type thermocouple. The probe is embedded in the end of the welding head 6 (2mm from the welding surface). It is passed through the internal through hole of the welding head 6 by a high-temperature resistant wire (temperature resistance ≥200℃) and electrically connected to the temperature control module (PID controller) (terminal block connection).

[0029] As a technical optimization of this utility model, the bottom edge of the rotary table 10 is provided with an annular guide rail 19, and the top of the frame 1 is provided with a guide groove 20 that slides in cooperation with the annular guide rail 19.

[0030] In this embodiment, the guide groove 20 is located on the top of the frame 1 and slides in cooperation with the annular guide rail 19, which guides and supports the rotation of the rotary table 10, ensuring the stability and accuracy of the rotary table 10 during rotation.

[0031] As a technical optimization of this utility model, the drive motor 11 is a servo motor with an absolute encoder; the intermittent rotation angle of the rotary table 10 is 180°, and the rotation positioning accuracy is ≤ ±0.05mm.

[0032] In this embodiment, the servo motor with an absolute encoder improves the rotation accuracy and positional accuracy of the rotary table 10, ensuring that the loading platform 12 can be accurately aligned with the welding assembly 2, guaranteeing the accuracy of the welding position, and improving the welding quality and the reliability of the device.

[0033] As a technical optimization of this utility model, the lifting device 8 is an electric push rod, a servo electric cylinder or a ball screw module.

[0034] In this embodiment, the electric push rod, servo electric cylinder or ball screw module all have high control accuracy and stability, which can meet the requirements of the dynamic pressure compensation mechanism for the lifting and lowering of the welding head 6 and the pressure adjustment, and ensure the precise control of the welding pressure.

[0035] Working principle and usage process of this utility model: The operator places the workpiece into the positioning slot 16 on the loading platform 12 (loading platform 12A) on one side of the rotary table 10, with the elastic buffer pad 17 adaptively conforming to the bottom of the workpiece. The drive motor 11 drives the rotary table 10 to rotate 180°, and the loading platform 12A moves with the rotary table 10 to the side of the welding table 3. At this time, the dovetail slider 15 of the loading platform 12A is aligned with the dovetail groove 13 on the side of the welding table 3. The linear driver 14 is activated, pushing the dovetail slider 15 to slide along the dovetail groove 13, accurately pushing the loading platform 12A onto the surface of the welding table 3 to complete the welding position docking. The gantry 5 slides above the welding position, and the lifting device 8 drives the welding head 6. As the welding head descends, pressure sensor 7 begins to detect contact pressure, and controller 9 adjusts the lifting amount according to preset parameters (e.g., 20-50N). The ball joint structure automatically compensates for the flatness error of the workpiece surface. Welding head 6 is energized and heated, and temperature sensor 18 monitors the end temperature in real time (e.g., 200-300℃) and feeds it back to the temperature control module to maintain constant temperature welding. At the same time, pressure sensor 7 continuously feeds back pressure data, and lifting device 8 dynamically fine-tunes to ensure stable pressure. After welding is completed, lifting device 8 moves welding head 6 upward, and linear driver 14 pulls dovetail slider 15 to return loading platform 12A to rotary table 10. Drive motor 11 drives rotary table 10 to rotate 180° again, and the completed loading platform 12A is moved to the unloading position. Another loading platform 12 (loading platform 12B) is moved to the side of welding table 3, and steps 3-5 are repeated. The operator unloads and reloads the material on loading platform 12A, which is synchronized with the welding process on loading platform 12B, forming a continuous production closed loop.

[0036] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0037] However, the above are merely specific embodiments of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A strip bonding device comprising a frame (1), characterized in that: The frame (1) is equipped with a welding assembly (2), a welding table (3), and a rotary dual-station mechanism (4). The welding assembly (2) includes a gantry frame (5) slidably mounted on the top of the frame (1), a welding head (6) mounted inside the gantry frame (5), and a dynamic pressure compensation mechanism connecting the welding head (6) and the gantry frame (5); the gantry frame (5) is mounted across the welding table (3), which is located directly below the welding head (6); the dynamic pressure compensation mechanism includes a pressure sensor (7) mounted on the welding head (6), a lifting device (8) slidably mounted on the top of the gantry frame (5), and a controller (9) mounted on the top of the gantry frame (5); the output end of the lifting device (8) is rigidly connected to the top of the pressure sensor (7) via a flange, and the bottom end of the pressure sensor (7) is connected to the welding head (6) via a ball joint structure; the controller (9) receives the real-time detection signal from the pressure sensor (7) and controls the extension and retraction of the lifting device (8); The rotary dual-station mechanism (4) includes a rotary table (10) rotatably mounted on the frame (1) and located on the side of the welding table (3), and a drive motor (11) mounted on the frame (1) to drive the rotary table (10) to rotate intermittently; the top of the rotary table (10) is flush with the top of the welding table (3); the bottom center of the rotary table (10) is rigidly connected to the output shaft of the drive motor (11); two material carriers (12) are symmetrically arranged on the top of the rotary table (10), and the drive motor (11) drives the rotary table (10) to rotate intermittently by 180° so that the two material carriers (12) are alternately aligned with the welding assembly (2) located above the welding table (3).

2. A solder strip welding device according to claim 1, characterized in that: The top surface of the rotary table (10) is symmetrically provided with a dovetail groove (13), and a linear driver (14) is provided in the dovetail groove (13). The output end of the linear driver (14) is connected to a dovetail slider (15). The upper end of the dovetail slider (15) is detachably connected to the bottom of one side of the loading platform (12). The linear driver (14) is a cylinder or an electric push rod.

3. A solder strip welding device according to claim 1, characterized in that: The loading area of ​​the loading platform (12) is provided with a positioning slot (16), and an elastic buffer pad (17) is embedded in the positioning slot (16). The thickness of the elastic buffer pad (17) is 0.5-2mm.

4. A solder strip welding apparatus according to claim 1, characterized in that: A temperature sensor (18) is provided at the end of the welding head (6), and the temperature sensor (18) is electrically connected to the temperature control module of the welding assembly (2).

5. A solder strip welding apparatus according to claim 1, characterized in that: The bottom edge of the rotary table (10) is provided with an annular guide rail (19), and the top of the frame (1) is provided with a guide groove (20) that slides with the annular guide rail (19).

6. A solder strip welding apparatus according to claim 1, characterized in that: The drive motor (11) is a servo motor with an absolute encoder; the rotary table (10) has an intermittent rotation angle of 180° and a rotation positioning accuracy of ≤ ±0.05mm.

7. A solder strip welding apparatus according to claim 1, characterized in that: The lifting device (8) is an electric push rod, a servo electric cylinder or a ball screw module.

Images