Multi-station welding device for electronic scale part machining

Abstract

The invention discloses a multi-station welding device for electronic scale part machining, and relates to the field of intelligent welding systems.The multi-station welding device comprises a machine body, a base is arranged on the top face of the machine body, positioning frames are slidably arranged at the four corners of the top of the base, a truss is arranged at the bottom of the inner side of a fixing frame, and welding gun assemblies are symmetrically slidably arranged at the bottom of the truss; the base and the truss are internally provided with a cooperative assembly in which the positioning frame and the welding gun assembly are matched in operation, and the positioning frame is internally provided with a thermal compensation assembly for correcting the deformation near the welding area of the electronic scale frame. According to the multi-station welding device for electronic scale part machining, synchronous positioning of the positioning frame and the welding gun assembly is achieved through mechanical transmission, the thermal deformation characteristic of memory alloy is used for driving the compensation plate to complete thermal deformation correction, movable welding fume collection is achieved by means of linkage of the sliding columns and the guide rods, and all the assemblies are matched to form a closed-loop operation process; and the batch processing requirement of the square electronic scale frame with high precision requirement is met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent welding systems, in particular to a multi-station welding device for processing electronic scale parts. BACKGROUND

[0002] An electronic scale is a commonly used measuring device, which contains multiple metal parts inside, such as sensor supports, scale body frames, etc. These parts need to be welded during processing. Currently, the welding of electronic scale parts is mostly done using single-station welding devices. Manual feeding, positioning, welding, and unloading are required during operation, which not only reduces processing efficiency, but also increases the precision error of manual positioning, leading to welding defects and affecting the assembly precision and performance of the electronic scale. With the development of intelligent equipment technology, multi-station automatic welding equipment in intelligent welding systems is gradually applied in the field of part processing. However, existing multi-station welding devices are mostly designed for large mechanical parts and are difficult to adapt to the small size and high precision requirements of electronic scale parts. Moreover, they lack dedicated positioning fixtures, which cannot meet the batch high-precision welding requirements of electronic scale parts. Therefore, there is an urgent need to design a multi-station intelligent welding device that is suitable for electronic scale parts.

[0003] To solve the above-mentioned defects, the existing technology (Chinese patent with publication number CN120133720A, published on June 13, 2025) is a multi-station synchronous welding device for floor windows. By driving the transmission gear to rotate and engaging the transmission first rack and second rack to slide in the U-shaped bracket cavity, the first rack and second rack will engage the driven gear to rotate, in turn driving the rotating block and laser welding head to rotate. This can adjust the welding angle according to different models of floor window frames, making it easier for the laser welding head to weld the butt joint of the floor window frame. The toxic gases generated by the laser welding head can also be filtered by the rotating block. Since the rotating block is located in the telescopic cover cavity and is provided with a combination of filter materials, harmful gases and odors can be removed, improving the safety of floor window welding processing and the working environment of the factory, making the entire welding device more environmentally friendly. Prior art (publication number CN120572140A, publication date 2025-09-02 Chinese patent) A kind of multi-station automatic laser welding device, when welding workpiece, first workpiece is sleeved on support block, then two clamping seats are moved towards the direction of support block using clamping drive element, two clamping seats are clamped to workpiece, so that the gap on workpiece is closed, then three-axis moving mechanism drives laser welding unit to move, laser welding unit automatically welds workpiece, so that the workpiece production efficiency and yield are improved, after workpiece is sleeved on support block, adjusting mechanism drives multiple support blocks to move upwards, support block drives workpiece to move upwards, support block and stopper form clamping to workpiece, so that the both sides of workpiece gap are at the same height, then clamping drive element drives two clamping seats to clamp workpiece again, so that workpiece gap is closed more tightly.

[0004] The above scheme is used in the process, the positioning component and the welding component work independently, during welding operation, the starting position of the welding unit needs to be manually calibrated by artificial, and then the position of the welding gun is repeatedly adjusted according to the clamping position of the positioning component, which is inconvenient to operate and is easy to cause error deviation, reduces the welding consistency, and the frame has a thin wall structure, local high temperature during welding is easy to cause thermal expansion and contraction of the material, and then irregular warping and deformation are generated, the existing device does not set a specific thermal deformation compensation mechanism, cannot dynamically correct the real-time deformation amount during welding, and is easy to generate thermal deformation during welding, resulting in high rejection rate of frame flatness error after welding. SUMMARY

[0005] The present application aims to provide a kind of multi-station welding device for electronic scale parts processing, to solve the problems of the existing multi-station welding device for electronic scale parts processing in the above background art, in the process of use, the positioning component and the welding component work independently, during welding operation, the starting position of the welding unit needs to be manually calibrated by artificial, and then the position of the welding gun is repeatedly adjusted according to the clamping position of the positioning component, which is inconvenient to operate and is easy to cause error deviation, reduces the welding consistency, and the frame has a thin wall structure, local high temperature during welding is easy to cause thermal expansion and contraction of the material, and then irregular warping and deformation are generated, the existing device does not set a specific thermal deformation compensation mechanism, cannot dynamically correct the real-time deformation amount during welding, and is easy to generate thermal deformation during welding, resulting in high rejection rate of frame flatness error after welding.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a kind of multi-station welding device for electronic scale parts processing, including machine body, fixed frame is arranged on the machine body, the top surface of the machine body is provided with base, the top of the base is slidably provided with positioning frame at four corners, the positioning frame is fixed to the electronic scale frame by pneumatic clamp, the inner side of the fixed frame is provided with truss at the bottom, and the truss is symmetrically slidably provided with welding gun assembly at the bottom; The base and truss are equipped with a coordinating component that works in conjunction with the positioning frame and the welding gun assembly. The positioning frame is equipped with a heat compensation component that corrects the deformation near the welding area of ​​the electronic scale frame.

[0007] Furthermore, a motor is installed inside the machine body, and the output end of the motor is connected to a first screw. The first screw is rotatably connected to the inner middle of the base. The top of the first screw is connected to the surrounding second screws through a bevel gear connecting assembly. The second screws are rotatably connected in a slide groove. The slide groove is opened at an equal angle at the top of the base, and a positioning frame is slidably connected in the slide groove.

[0008] Furthermore, the truss slides back and forth along the bottom inner side of the fixed frame, and the bottom of the welding gun assembly at the bottom of the truss is driven by an electric push rod to move the welding gun horizontally.

[0009] Furthermore, the collaborative component includes a sleeve fixed to the inner wall of the bottom of the truss, a sliding rod slidably connected in the sleeve, and the outer side of the sliding rod being fixedly connected to the top side of the welding gun assembly.

[0010] Furthermore, the coordinating component also includes a piston plate threaded to the outside of the first screw, the bottom of the piston plate being slidably sealed in the air chamber, the air chamber being symmetrically arranged on the inner bottom of the base, and the bottom of the air chamber being connected to the inside of the sleeve through a connecting pipe.

[0011] Furthermore, the movement of the welding gun assembly at the bottom of the truss is synchronized with the movement of the positioning frame in the slide. After the welding gun assembly moves, it aligns with the welding starting point of the electronic frame. The welding gun assembly and the positioning frame form a cooperative positioning structure through the first screw, the second screw, the piston plate, the air chamber, the sleeve, and the slide rod.

[0012] Furthermore, the thermal compensation component includes a heat-conducting plate embedded in the middle of the top surface of the positioning frame, a shape memory alloy is attached to the bottom of the heat-conducting plate, and a sliding column is elastically connected to the bottom of the shape memory alloy, the sliding column being slidably connected to the middle of the inner side of the positioning frame.

[0013] Furthermore, the sliding column is provided with convex teeth at equal intervals on adjacent sides facing the positioning position of the electronic scale frame. The outer side of the convex teeth is meshed with a gear. The gear is rotatably connected to the inside of the positioning frame through a mounting shaft. The mounting shaft of the gear is connected to the mounting shaft of the cam through a sprocket mechanism. The cam is distributed inside the positioning frame facing the positioning position of the electronic scale frame, and the top of the cam abuts against a compensation plate.

[0014] Furthermore, the compensation plate is connected to the inside of the positioning frame by a spring, and the initial position of the top of the compensation plate is flush with the top of the positioning frame. The compensation plate slides vertically to compensate for the thermal deformation of the electronic scale frame during welding and maintain its flatness.

[0015] Furthermore, a suction pipe is elastically mounted on the top of the positioning frame, which is in the same positioning position as the electronic scale frame, via a torsion spring. A triangular protrusion is fixed on the side of the sliding column, which is in the same positioning position as the electronic scale frame. An "L"-shaped guide rod is offset at the bottom of the protrusion. Springs are connected between both sides of the guide rod and the inner wall of the positioning frame. The contact part between the bottom of the guide rod and the protrusion is set as a circular structure. The top of the guide rod is connected through to the top of the positioning frame. A first magnetic block is fixed on the top of the guide rod. The first magnetic block and a second magnetic block are arranged opposite to each other, and the second magnetic block is fixed in the middle of the bottom surface of the suction pipe. The magnetic poles of the first magnetic block and the second magnetic block are the same. The suction pipe forms a swinging smoke-smoking structure through the first magnetic block and the second magnetic block.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This multi-station welding device for electronic scale component processing achieves synchronous linkage between positioning and welding through collaborative components, dynamic correction of thermal deformation through thermal compensation components, and directional collection of welding fumes through linkage structure. Combining mechanical transmission and material properties, it solves problems such as misalignment between positioning and welding, thermal deformation of the frame, and diffusion of welding fumes, thus achieving high-quality batch welding of electronic scale frames.

[0017] Furthermore, with the help of the first and second screws driven by the motor, and the coordinated components consisting of the piston plate, air chamber, sleeve and slide rod, the clamping and gathering / diffusion action of the positioning frame synchronously adjusts the spacing of the four corner positioning frames. This is synchronized with the position adjustment of the welding gun assembly, eliminating the need for manual calibration of the welding start point. This effectively avoids misalignment between positioning and welding, ensuring welding consistency. At the same time, it can be adapted to the processing of electronic scale frames of different sizes without replacing the positioning module or readjusting the welding mechanism, improving the versatility and ease of changeover of the device, and achieving synchronous and precise linkage between positioning and welding.

[0018] Furthermore, the heat from the welding zone is quickly conducted to the shape memory alloy through the heat-conducting plate. The thermal deformation characteristics of the shape memory alloy drive the sliding column to slide. The power is transmitted to the cam through the tooth, gear, and sprocket mechanism, and finally pushes the compensation plate to achieve dynamic compensation in the vertical direction. This can specifically offset the warping deformation caused by thermal expansion and contraction during frame welding, maintain the flatness of the frame, and achieve real-time and accurate correction of thermal deformation.

[0019] Furthermore, relying on the mechanical linkage between the protrusion on the sliding column and the guide rod, and in conjunction with the magnetic repulsion between the first and second magnetic blocks, the dust collection tube can swing and smoke the welding fume source area during the welding process. It can achieve rapid collection of welding fumes without additional power, optimize the working environment, and realize intelligent adaptation of welding fume collection to welding conditions. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall front view of the present invention; Figure 2 This is a partial bottom view of the structure of the present invention; Figure 3 This is a front view schematic diagram of the base and positioning frame of the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of the base and truss of the present invention; Figure 5 This is a schematic diagram of the welding gun assembly, piston plate, and air chamber of the present invention in a cross section. Figure 6 This is a top view of the positioning frame distribution structure of the present invention; Figure 7 This is a schematic diagram of the positioning frame structure of the present invention; Figure 8 This is a schematic diagram of the orthographic section of the positioning frame of the present invention; Figure 9 This is a schematic diagram of the internal structure of the positioning frame of the present invention; Figure 10 This is a bottom view schematic diagram of the distribution of the sliding column, compensation plate, guide rod and suction pipe of the present invention.

[0021] In the diagram: 1. Body; 2. Fixing frame; 3. Base; 4. Slide groove; 5. Positioning frame; 6. Truss; 7. Welding gun assembly; 8. Motor; 9. First screw; 10. Second screw; 11. Piston plate; 12. Air chamber; 13. Sleeve; 14. Slide rod; 15. Heat-conducting plate; 16. Shape memory alloy; 17. Slide column; 18. Convex tooth; 19. Gear; 20. Cam; 21. Compensation plate; 22. Protrusion; 23. Guide rod; 24. First magnetic block; 25. Second magnetic block; 26. Dust suction pipe. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention. Example 1:

[0023] Please see Figure 1 -Figure 4 and Figure 8 - Figure 10 The present invention provides the following technical solution: a multi-station welding device for processing electronic scale parts, including a body 1, a fixed frame 2 on the body 1, a base 3 on the top surface of the body 1, a positioning frame 5 slidably arranged at the four corners of the top of the base 3, the positioning frame 5 being fixed to the electronic scale frame by a pneumatic clamp, a truss 6 being arranged at the bottom inner side of the fixed frame 2, a welding gun assembly 7 being symmetrically slidably arranged at the bottom of the truss 6, a cooperating component for the positioning frame 5 and the welding gun assembly 7 being arranged inside the base 3 and the truss 6, and a heat compensation component for correcting the deformation near the welding area of ​​the electronic scale frame being arranged inside the positioning frame 5. The core of the solution is to use a motor 8 as a power source to achieve synchronous positioning of the positioning frame 5 and the welding gun assembly 7 through mechanical transmission. The thermal deformation characteristics of the shape memory alloy 16 drive the compensation plate 21 to complete thermal deformation correction. The linkage between the sliding column 17 and the guide rod 23 realizes the collection of welding fumes. The components cooperate with each other to form a closed-loop operation process, realizing "synchronous linkage of positioning and welding by collaborative components, dynamic correction of thermal deformation by thermal compensation components, and directional collection of welding fumes by linkage structure". This not only ensures welding accuracy, but also improves processing efficiency and safety of the working environment. It is suitable for the batch processing needs of small electronic scale frames with high precision requirements, and solves problems such as positioning and welding misalignment, frame thermal deformation, and welding fume diffusion, realizing high-precision batch welding of square electronic scale frames.

[0024] refer to Figure 1 - Figure 7As shown, a motor 8 is installed inside the body 1. The output end of the motor 8 is connected to a first screw 9. The first screw 9 is rotatably connected to the inner middle of the base 3. The top of the first screw 9 is connected to the surrounding second screws 10 through a bevel gear connecting assembly. The second screws 10 are rotatably connected to a slide groove 4. The slide groove 4 is opened at an equal angle on the top of the base 3. At the same time, a positioning frame 5 is slidably connected in the slide groove 4. A screw is installed on the inner top of the fixed frame 2. The rear side of the screw is connected to a drive source. The truss 6 slides back and forth along the inner bottom of the fixed frame 2 through the screw. The truss 6 is set as a "T" shaped structure. The two sets of welding gun assemblies 7 at the bottom of the truss 6 have the same structure. The bottom of the welding gun assembly 7 at the bottom of the truss 6 is driven by an electric push rod to move the welding gun horizontally. The cooperating component includes a fixed to the truss The sleeve 13 on the inner wall of the bottom of the frame 6 has a sliding rod 14 sealed and slidably connected in the sleeve 13. The outer side of the sliding rod 14 is fixedly connected to the top side of the welding gun assembly 7. The cooperating assembly also includes a piston plate 11 threaded to the outer side of the first screw 9. The bottom of the piston plate 11 is sealed and slidably connected to the air chamber 12. The air chamber 12 is symmetrically arranged on the inner bottom of the base 3. The bottom of the air chamber 12 is connected to the inside of the sleeve 13 through a connecting pipe. The movement of the welding gun assembly 7 at the bottom of the truss 6 is synchronized with the movement of the positioning frame 5 in the slide 4. After the welding gun assembly 7 moves, it is aligned with the welding starting point of the electronic frame. The welding gun assembly 7 and the positioning frame 5 form a cooperative positioning structure through the first screw 9, the second screw 10, the piston plate 11, the air chamber 12, the sleeve 13 and the sliding rod 14.

[0025] refer to Figure 1 - Figure 7As shown, during use, the overall coordinated positioning is achieved: the positioning frame 5 and the welding gun assembly 7 are synchronously linked. After the device is started, the motor 8 drives the first screw 9 to rotate. The first screw 9 drives the surrounding second screws 10 to rotate synchronously through the bevel gear connecting assembly. Since the positioning frame 5 is slidably connected to the slide groove 4 of the base 3 and threadedly engaged with the second screw 10, when the second screw 10 rotates, it drives the positioning frames 5 at the four corners to converge towards the center or spread outward along the slide groove 4, thereby achieving clamping and positioning of electronic scale frames of different specifications. At the same time, the rotation of the first screw 9 will drive the piston plate 11 connected by the outer thread to slide in the sealed air chamber 12. The gas in the air chamber 12 is transported to the sleeve 13 on the inner wall of the bottom of the truss 6 through the connecting pipe, pushing the slide rod 14 in the sleeve 13 to slide. The slide rod 14 is fixedly connected to the top side of the welding gun assembly 7, thereby driving the welding gun assembly 7 to move synchronously at the bottom of the truss 6, so that the welding gun assembly 7 is accurately aligned with the electric scale frame after moving. The welding starting point of the sub-scale frame, the movement of the second screw 10 and the movement distance of the slide bar 14 in the sleeve 13 are always matched. Through the cooperative positioning structure composed of the first screw 9, the second screw 10, the piston plate 11, the air chamber 12, the sleeve 13 and the slide bar 14, it is ensured that the clamping action of the positioning frame 5 and the position adjustment of the welding gun assembly 7 are synchronized, without the need for manual calibration, avoiding positioning and welding error deviation. The welding gun at the bottom of the welding gun assembly 7 has a telescopic rod. After aligning with the welding starting point, it moves down to align with the welding point. The truss 6 moves longitudinally through the slide rail on the fixed frame 2. After the welding gun assembly 7 starts welding from the welding starting point, the truss 6 drives the welding gun assembly 7 to move through the slide rail. The corner joints of the electronic frame are often welded. During the movement, the electric push rod on the inner side of the bottom of the welding gun assembly 7 pushes the welding gun to move in opposite or reverse directions, thereby keeping the welding trajectory consistent with the weld direction of the electronic scale frame. Example 2:

[0026] Based on Example 1, a dynamic compensation method for thermal deformation based on real-time correction of shape memory alloy 16 is also disclosed. Please refer to [link / reference]. Figure 7 - Figure 10As shown, its specific structure is as follows: The thermal compensation component includes a heat-conducting plate 15 embedded in the center of the top surface of the positioning frame 5. A shape memory alloy 16 is attached to the bottom of the heat-conducting plate 15. A sliding column 17 is elastically connected to the bottom of the shape memory alloy 16. The sliding column 17 is slidably connected to the inner center of the positioning frame 5. The adjacent sides of the sliding column 17 facing the positioning position of the electronic scale frame are evenly spaced with protruding teeth 18. A gear 19 is meshed with the outer side of the protruding teeth 18. The gear 19 is rotatably connected to the inner side of the positioning frame 5 through a mounting shaft. The mounting shaft of gear 19 is connected to the mounting shaft of cam 20 via a sprocket mechanism. Cam 20 is located inside the positioning frame 5, which is positioned opposite to the electronic scale frame. The top of cam 20 abuts against a compensation plate 21. The initial position of compensation plate 21 is flush with the top surface of positioning frame 5. Compensation plate 21 is connected through the top of positioning frame 5. A spring is connected between the side of compensation plate 21 and the inside of positioning frame 5. Compensation plate 21 compensates for thermal deformation during welding of electronic scale frame by vertical sliding, thus maintaining the flatness of the frame.

[0027] refer to Figure 7 - Figure 10 As shown, during use, during the welding process, the local high temperature in the welding area of ​​the electronic scale frame is transferred to the shape memory alloy 16 attached to the bottom through the heat-conducting plate 15 in the middle of the top surface of the positioning frame 5. After being heated, the shape memory alloy 16 undergoes a preset deformation and presses down to push the slide column 17 to move down, so that the slide column 17 slides vertically in the middle of the inner side of the positioning frame 5. The protruding teeth 18 on the side of the slide column 17 mesh with the gear 19. When the slide column 17 moves, it drives the gear 19 to rotate. The mounting shaft of the gear 19 transmits power to the mounting shaft of the cam 20 through the sprocket mechanism, driving the cam 20 to rotate. The compensation plate 21 that abuts against the top of the cam 20 rises vertically under the pressure of the cam 20, overcoming the spring tension, and accurately pushes to compensate for the local deformation caused by thermal expansion and contraction in the welding area. When the welding ends and the temperature drops, the shape memory alloy 16 returns to its initial shape, the slide column 17 moves up and resets by the spring, the gear 19 drives the cam 20 to rotate, and the compensation plate 21 resets under the action of the spring force, ensuring the flatness of the electronic scale frame throughout the welding process. Example 3:

[0028] Based on Embodiment 2, a mechanical linkage mechanism for collecting active smoke is also disclosed; please refer to [reference needed]. Figure 7 - Figure 10As shown, its specific structure is as follows: The top of the positioning frame 5, which is in the same positioning position as the electronic scale frame, is elastically mounted with a suction pipe 26 via a torsion spring. A triangular protrusion 22 is fixed on the side of the sliding column 17, which is in the same positioning position as the electronic scale frame. An "L"-shaped guide rod 23 is offset at the bottom of the protrusion 22. Springs are connected between the two sides of the guide rod 23 and the inner wall of the positioning frame 5. The contact part between the bottom of the guide rod 23 and the protrusion 22 is set as a circular structure. The top of the guide rod 23 is connected through to the top of the positioning frame 5. A first magnetic block 24 is fixed on the top of the guide rod 23. The first magnetic block 24 and the second magnetic block 25 are arranged opposite to each other, and the second magnetic block 25 is fixed in the middle of the bottom surface of the suction pipe 26. The magnetic poles of the first magnetic block 24 and the second magnetic block 25 are the same. The suction pipe 26 forms a swinging smoke-smoking structure through the first magnetic block 24 and the second magnetic block 25.

[0029] refer to Figure 7 - Figure 10 As shown, during use, as the sliding column 17 moves downward, the triangular protrusion 22 fixed on its side will abut against the bottom circular contact part of the "L"-shaped guide rod 23. As the downward movement continues, the protrusion 22 pushes the guide rod 23 to move laterally. At this time, the guide rod 23 overcomes the tension and pressure of the springs on both sides connected to the inner wall of the positioning frame 5. When the protrusion 22 and the bottom of the guide rod 23 are completely misaligned, the springs on both sides will drive the guide rod 23 to move laterally back and forth elastically. The first magnetic block 24 at the top of the guide rod 23 moves synchronously, thereby causing the first magnetic block 24 to move back and forth towards the second magnetic block 25 on the bottom surface of the vacuum tube 26. Since the first magnetic block 24 and the second magnetic block 25 have the same magnetic poles, when the first magnetic block 24 and the second magnetic block 25 are close together, the repulsive force generated pushes the suction pipe 26 to rotate elastically around the torsion spring mounting shaft at the top of the positioning frame 5. When the first magnetic block 24 and the second magnetic block 25 are far apart, the torsion spring will drive the suction pipe 26 to rotate, so that the suction port of the suction pipe 26 is aligned with the welding area of ​​the welding gun assembly 7 and swings to smoke. After the welding is completed, the slide column 17 is reset, and the protrusion 22 moves up and once again misaligns and contacts the guide rod 23. Thus, after the welding is completed, the suction pipe 26 can perform secondary smoke treatment, thereby absorbing the residual smoke for a second time.

[0030] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-station welding device for processing electronic scale parts, comprising a body (1), a fixed frame (2) provided on the body (1), a base (3) provided on the top surface of the body (1), a positioning frame (5) slidably provided at the four corners of the top of the base (3), the positioning frame (5) fixing the corners of the electronic scale frame, a truss (6) provided at the bottom inside the fixed frame (2), and welding gun assemblies (7) symmetrically slidably provided at the bottom of the truss (6); Its features are: The base (3) and the truss (6) are equipped with a positioning frame (5) and a welding gun assembly (7) that work together to operate. The positioning frame (5) is equipped with a heat compensation component that corrects the deformation near the welding area of ​​the electronic scale frame.

2. The multi-station welding device for processing electronic scale parts according to claim 1, characterized in that: The body (1) is equipped with a motor (8), and the output end of the motor (8) is connected to a first screw (9). The first screw (9) is rotatably connected to the inner middle of the base (3). The top of the first screw (9) is connected to the second screw (10) around the body through a bevel gear connecting assembly. The second screw (10) is rotatably connected to the slide groove (4). The slide groove (4) is opened at the top of the base (3) at equal angles. At the same time, a positioning frame (5) is slidably connected in the slide groove (4).

3. The multi-station welding device for processing electronic scale parts according to claim 2, characterized in that: The truss (6) is configured as a "T" shaped structure. The two sets of welding gun assemblies (7) at the bottom of the truss (6) are identical in construction. The welding gun assemblies (7) are driven to move horizontally by an electric push rod at the bottom.

4. The multi-station welding device for processing electronic scale parts according to claim 3, characterized in that: The coordinating component includes a sleeve (13) fixed to the inner wall of the bottom of the truss (6), and a slide rod (14) is slidably connected in the sleeve (13). The outer side of the slide rod (14) is fixedly connected to the top side of the welding gun assembly (7).

5. A multi-station welding device for processing electronic scale parts according to claim 4, characterized in that: The coordinating component also includes a piston plate (11) threaded to the outside of the first screw (9). The bottom of the piston plate (11) is slidably connected to the air chamber (12). The air chamber (12) is symmetrically arranged on the inner bottom of the base (3). The bottom of the air chamber (12) is connected to the inside of the sleeve (13) through a connecting pipe.

6. The multi-station welding device for processing electronic scale parts according to claim 1, characterized in that: The movement of the welding gun assembly (7) at the bottom of the truss (6) is synchronized with the movement of the positioning frame (5) in the slide (4). After the welding gun assembly (7) moves, it aligns with the welding starting point of the electronic frame. The welding gun assembly (7) and the positioning frame (5) form a cooperative positioning structure through the first screw (9), the second screw (10), the piston plate (11), the air chamber (12), the sleeve (13), and the slide rod (14).

7. A multi-station welding device for processing electronic scale parts according to claim 6, characterized in that: The thermal compensation component includes a heat-conducting plate (15) embedded in the middle of the top surface of the positioning frame (5). A shape memory alloy (16) is attached to the bottom of the heat-conducting plate (15). A sliding column (17) is elastically connected to the bottom of the shape memory alloy (16). The sliding column (17) is slidably connected to the middle of the inner side of the positioning frame (5).

8. A multi-station welding device for processing electronic scale parts according to claim 7, characterized in that: The sliding column (17) has convex teeth (18) evenly spaced on adjacent sides facing the positioning position of the electronic scale frame. The outer side of the convex teeth (18) is meshed with a gear (19). The gear (19) is rotatably connected to the inside of the positioning frame (5) through a mounting shaft. The mounting shaft of the gear (19) is connected to the mounting shaft of the cam (20) through a sprocket mechanism. The cam (20) is distributed inside the positioning frame (5) facing the positioning position of the electronic scale frame. The top of the cam (20) abuts against a compensation plate (21).

9. A multi-station welding device for processing electronic scale parts according to claim 8, characterized in that: The compensation plate (21) is connected through the top of the positioning frame (5), and a spring is connected between the side of the compensation plate (21) and the inside of the positioning frame (5). The initial position of the top of the compensation plate (21) is flush with the top of the positioning frame (5). The compensation plate (21) compensates for the thermal deformation during the welding of the electronic scale frame by vertical sliding, thus maintaining the flatness of the frame.

10. A multi-station welding device for processing electronic scale parts according to claim 9, characterized in that: The top of the positioning frame (5), which is in the same orientation as the electronic scale frame, is fitted with a vacuum tube (26) that rotates elastically via a torsion spring. A triangular protrusion (22) is fixed to the side of the sliding column (17) that is in the same orientation as the electronic scale frame. An "L"-shaped guide rod (23) is offset at the bottom of the protrusion (22). Springs connect both sides of the guide rod (23) to the inner wall of the positioning frame (5). The contact point between the bottom of the guide rod (23) and the protrusion (22) is set as... The circular structure has the top of the guide rod (23) connected to the top of the positioning frame (5). The top of the guide rod (23) is fixed with a first magnetic block (24). The first magnetic block (24) and the second magnetic block (25) are arranged opposite to each other, and the second magnetic block (25) is fixed in the middle of the bottom surface of the suction tube (26). The first magnetic block (24) and the second magnetic block (25) have the same magnetic poles. The suction tube (26) forms a swinging smoking structure through the first magnetic block (24) and the second magnetic block (25).

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