A device for visual inspection of multi-station wave-soldering

Abstract

The utility model relates to the technical field of wave -soldering production especially is involved in a kind of equipment for the visual inspection of multi-station wave -soldering condition, including the conveying mechanism and detection device of installation in rack, conveying mechanism is placed to the bracket of multi-station circuit board after wave -soldering;Detection device is equipped with displacement mechanism and visual inspection unit, displacement mechanism is installed in the lower rack of conveying mechanism, visual inspection unit is installed in the driving end of displacement mechanism, so that displacement mechanism drives visual inspection unit to move, and the multi-station wave -soldering circuit board on bracket is respectively visually inspected.The above-mentioned, the equipment is optimized from many aspects to wave -soldering circuit board detection process, significantly improves production efficiency, reduces artificial cost, and provides efficient, reliable solution for the circuit board detection of electronic manufacturing industry.

Description

Technical Field

[0001] This utility model relates to the technical field of wave soldering production, and in particular to a device for visual inspection of multi-station wave soldering. Background Technology

[0002] Wave soldering is a widely used soldering process in the electronics manufacturing industry. It connects components to the PCB by bringing the soldering surfaces of the printed circuit board (PCB) into contact with high-temperature liquid solder. To improve production efficiency, especially when processing small circuit boards, the industry often uses trays to place multiple small circuit boards together on one tray, completing multi-station wave soldering in one go.

[0003] However, post-wave soldering solder joint quality inspection is a critical step in ensuring product reliability. Traditional inspection processes typically involve removing multiple small circuit boards one by one from a tray and placing them individually on dedicated inspection equipment. While this method accomplishes the inspection task, it suffers from inefficiency. Specifically, frequent material handling, loading, conveying, inspection, and unloading significantly increase the production cycle and reduce overall inspection efficiency. Furthermore, manual operation can introduce errors, affecting the accuracy of the inspection results.

[0004] Current technologies for solder joint inspection largely rely on optical inspection (AOI) equipment. However, for centralized inspection after multi-station wave soldering, existing AOI equipment still has room for improvement in terms of adaptability and efficiency, especially in avoiding frequent board handling to improve automation levels. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0006] This utility model provides a device for visual inspection of multi-station wave soldering, including a conveying mechanism and an inspection device mounted on a frame. The conveying mechanism conveys a tray containing multi-station wave soldered circuit boards. The inspection device is equipped with a displacement mechanism and a visual inspection unit. The displacement mechanism is mounted on the frame below the conveying mechanism, and the visual inspection unit is mounted on the drive end of the displacement mechanism, so that the displacement mechanism drives the visual inspection unit to move and perform visual inspection on the multi-station wave soldered circuit boards on the tray.

[0007] Furthermore: the displacement mechanism includes a displacement base, a horizontal axis assembly, and a vertical axis assembly. The displacement base is mounted on the frame, the vertical axis assembly is configured to be perpendicular to the conveying direction of the conveying mechanism and is mounted on the displacement base; the horizontal axis assembly is configured to be parallel to the conveying direction of the conveying mechanism and is mounted on the drive end of the vertical axis assembly; the vision inspection unit is mounted on the drive end of the horizontal axis assembly.

[0008] Furthermore: the longitudinal axis assembly is provided with longitudinal guide rails, longitudinal sliders, longitudinal screws, longitudinal nuts, and a longitudinal motor. At least two sets of longitudinal guide rails are respectively installed on both sides of the displacement base, so that the two ends of the transverse axis assembly are slidably connected to the two sets of longitudinal guide rails through the longitudinal sliders. The longitudinal screw is rotatably connected to the displacement base through bearings. The longitudinal motor is fixed to the displacement base and is driven to one end of the longitudinal screw. The longitudinal nut and the longitudinal screw cooperate to form a transmission element, so that the transverse axis assembly, which is fixed to the longitudinal nut at one end, moves longitudinally along the longitudinal guide rails under the drive of the longitudinal motor.

[0009] Furthermore: the horizontal axis assembly includes a horizontal guide rail, a horizontal slider, a horizontal module, and a horizontal motor. Both ends of the horizontal module are fixed to the vertical slider, thereby moving longitudinally along the vertical guide rail. The horizontal guide rail is installed on one side of the horizontal module. The vision inspection unit has an inspection base. One end of the inspection base is fixed to the drive end of the horizontal module, and the other end of the inspection base is fixed to the horizontal slider. The horizontal slider and the horizontal guide rail cooperate to form a sliding connection. The horizontal motor is fixed to the horizontal module and provides operating power to the horizontal module, enabling the horizontal module to drive the inspection base to move laterally.

[0010] Furthermore, the visual inspection unit is also equipped with an inspection camera, an inspection lens, and a ring light source respectively mounted on the inspection base. The ring light source is positioned between the bracket and the inspection lens to emit light to illuminate the inspection area. The inspection lens is positioned between the ring light source and the inspection camera to focus the light reflected from the inspection area. The inspection camera is positioned at the end of the inspection lens to capture the focused light.

[0011] Furthermore, the detection base is also equipped with an air knife, which is installed on the detection base and positioned on one side of the ring light source, and at a position higher than the ring light source; the air knife is connected to an external high-pressure air pump through a pipeline, so that high-pressure airflow is blown out from the air knife.

[0012] Furthermore: The conveying mechanism is equipped with a synchronous support, a synchronous belt and a synchronous motor. The synchronous support is fixed to the equipment frame, the synchronous belt is rotatably connected to the synchronous support through a synchronous pulley, and the synchronous motor is fixed to the synchronous support and driven by the synchronous belt. Multiple lugs are provided on both sides of the bracket for overlapping the synchronous belt to achieve conveying.

[0013] Furthermore, the synchronous bracket is also equipped with a support bar, which is fixed to the synchronous bracket and located below the synchronous belt to support the synchronous belt with overlapping lugs.

[0014] Furthermore, the conveying mechanism is also equipped with a blocking cylinder, which is fixed to the synchronous support and performs a stop operation on the carrier being conveyed on the synchronous belt.

[0015] Furthermore, the conveying mechanism is also equipped with a pressing cylinder, which is fixed to the synchronous support. The pressing cylinder presses down on the lug of the bracket through the piston rod, so that the lug, the synchronous belt and the support bar fit tightly together.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] First, the equipment has a displacement mechanism set up on the frame below the conveying mechanism, which drives the vision inspection unit to move directly under the circuit board for inspection. This avoids the frequent circuit board picking, unloading, and conveying steps in the traditional solution, greatly shortens the inspection time, optimizes the overall operation process, and significantly improves the overall inspection efficiency.

[0018] Secondly, the rational configuration of the vision inspection unit, combined with the ring light source, inspection lens and inspection camera, can accurately detect solder joint defects. In conjunction with the inspection system in the industrial computer, it can automatically analyze and generate results for various defects such as insufficient solder, incomplete soldering, and short circuits, ensuring the accuracy and reliability of the inspection.

[0019] Furthermore, the inclusion of components such as the blocking cylinder and the pressing cylinder in the conveying mechanism ensures stable positioning of the bracket during the inspection process, reducing imaging errors caused by shaking and further improving inspection quality. In addition, the air knife design on the inspection base effectively disperses residual welding fumes, ensuring the inspection camera acquires clear images and providing favorable conditions for accurate inspection.

[0020] With the above improvements, this utility model provides a device for visual inspection of multi-station wave soldering. This device optimizes the wave soldering circuit board inspection process from multiple aspects, significantly improves production efficiency, reduces labor costs, and provides an efficient and reliable solution for circuit board inspection in the electronics manufacturing industry.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2This is a schematic diagram of the conveying mechanism and detection device of this utility model;

[0025] Figure 3 This is a structural schematic diagram of the displacement base and longitudinal axis assembly of this utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the horizontal axis assembly and the vision inspection unit of this utility model;

[0027] Figure 5 This is a schematic diagram of the blocking cylinder and the pressing cylinder of this utility model.

[0028] The reference numerals and names in the figure are as follows:

[0029] 10. Frame; 11. Industrial computer; 12. Bracket; 13. Lug; 20. Conveying mechanism; 21. Blocking cylinder; 22. Pressing cylinder; 23. Synchronous bracket; 24. Support bar; 25. Synchronous belt; 26. Synchronous motor; 30. Detection device; 31. Displacement mechanism; 32. Displacement base; 33. Horizontal axis assembly; 34. Horizontal guide rail; 35. Horizontal slider; 36. Horizontal module; 37. Horizontal motor; 40. Vertical axis assembly; 41. Vertical guide rail; 42. Vertical slider; 43. Vertical screw; 44. Vertical nut; 45. Vertical motor; 50. Vision inspection unit; 51. Inspection base; 52. Air knife; 53. Inspection camera; 54. Inspection lens; 55. Ring light source. Detailed Implementation

[0030] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0031] Please see Figures 1 to 5 In this embodiment of the present invention, a device for visual inspection of multi-station wave soldering includes a conveying mechanism 20 and an inspection device 30 mounted on a frame 10. The conveying mechanism 20 conveys a tray 12 containing wave soldered multi-station circuit boards. The inspection device 30 is provided with a displacement mechanism 31 and a visual inspection unit 50. The displacement mechanism 31 is mounted on the frame 10 below the conveying mechanism 20, and the visual inspection unit 50 is mounted on the drive end of the displacement mechanism 31, so that the displacement mechanism 31 drives the visual inspection unit 50 to move and perform visual inspection on the multi-station wave soldered circuit boards on the tray 12.

[0032] Specifically, wave soldering involves directly contacting the soldering surface of the circuit board with high-temperature liquid solder to achieve the soldering purpose. The high-temperature liquid solder is maintained at an angle, and a special device makes the liquid solder form a wave-like phenomenon, hence the name "wave soldering." Its main material is solder bar. To improve production efficiency, for small circuit boards, a bracket 12 is usually used as an auxiliary tool. Multiple circuit boards are placed on the bracket 12, spreading them evenly across the entire bracket 12. As the bracket 12 passes through the wave groove, multiple circuit boards on the entire bracket 12 can be wave soldered at multiple stations.

[0033] After completing the multi-station wave soldering process, the solder joints of the soldered circuit boards need to be inspected to ensure the soldering quality. The traditional inspection method is to remove the multiple small circuit boards from the bracket 12 and inspect them separately on the corresponding small inspection equipment. Although the inspection can be completed, it is relatively time-consuming and inefficient because it requires re-picking, loading, conveying, inspecting and unloading all the circuit boards.

[0034] This invention provides a displacement mechanism 31 at the lower frame 10 of the conveying mechanism 20. The displacement mechanism 31 moves the vision inspection unit 50 so that it can be moved to the bottom of the circuit boards at multiple workstations for direct inspection. This eliminates the need to remove multiple small circuit boards separately, reducing the time for picking up, loading, unloading, and conveying small circuit boards, optimizing the overall operation process, and improving inspection efficiency.

[0035] Secondly, in traditional wave soldering processes, small circuit boards are often soldered in multiple stations using a bracket 12. After soldering, the solder joints of the entire multi-station circuit board on the bracket 12 need to be inspected, but the traditional solution requires picking up and putting down the circuit boards one by one, which is inefficient. This invention uses a vision inspection unit 50 to directly inspect the multi-station circuit boards on the bracket 12, avoiding frequent loading and unloading.

[0036] like Figure 1 and Figure 2 As shown, preferably, the displacement mechanism 31 includes a displacement base 32, a horizontal axis assembly 33, and a vertical axis assembly 40. The displacement base 32 is mounted on the frame 10. The vertical axis assembly 40 is configured perpendicular to the conveying direction of the conveying mechanism 20 and is mounted on the displacement base 32. The horizontal axis assembly 33 is configured parallel to the conveying direction of the conveying mechanism 20 and is mounted on the drive end of the vertical axis assembly 40. The vision inspection unit 50 is mounted on the drive end of the horizontal axis assembly 33.

[0037] Specifically, in order to drive the vision inspection unit 50 on the horizontal and vertical axes, it is preferable to set up corresponding horizontal axis components 33 and vertical axis components 40. The vision inspection unit 50 is installed on the drive end of the horizontal axis component 33, so that the horizontal axis component 33 can drive the vision inspection unit 50 to move laterally along the conveying direction of the conveying mechanism 20; while the horizontal axis component 33 is also installed on the drive end of the vertical axis component 40, so that the vertical axis component 40 can drive the horizontal axis component 33 and the vision inspection unit 50 to move longitudinally along the conveying direction perpendicular to the conveying mechanism 20, so that the vision inspection unit 50 can move laterally and longitudinally respectively, thereby performing vision inspection on multiple circuit boards at different positions on the bracket 12.

[0038] Secondly, in this utility model, all horizontal axes are represented as Figure 1 and Figure 2 In the diagram, the X-axis and all vertical axes are represented as... Figure 1 and Figure 2 The Y-axis in the diagram.

[0039] like Figure 2 and Figure 3 As shown, preferably, the longitudinal axis assembly 40 is provided with a longitudinal guide rail 41, a longitudinal slider 42, a longitudinal screw 43, a longitudinal nut 44, and a longitudinal motor 45. At least two sets of longitudinal guide rails 41 are respectively installed on both sides of the displacement base 32, so that the two ends of the transverse axis assembly 33 are slidably connected to the two sets of longitudinal guide rails 41 through the longitudinal slider 42. The longitudinal screw 43 is rotatably connected to the displacement base 32 through a bearing. The longitudinal motor 45 is fixed to the displacement base 32 and is drivenly connected to one end of the longitudinal screw 43. The longitudinal nut 44 and the longitudinal screw 43 cooperate with each other to form a transmission element, so that the transverse axis assembly 33, which is fixed to the longitudinal nut 44 at one end, moves longitudinally along the longitudinal guide rail 41 under the drive of the longitudinal motor 45.

[0040] Specifically, in order to move the horizontal axis assembly 33 longitudinally perpendicular to the conveying direction of the conveying mechanism 20, preferably, at least one longitudinal guide rail 41 is installed on each of the two sides of the displacement base 32 perpendicular to the conveying direction, and a longitudinal slider 42 is installed on the longitudinal guide rail 41 to form a linear guide rail structure, so that the longitudinal movement of the horizontal axis assembly 33 is more stable.

[0041] Secondly, a ball screw transmission element consisting of a longitudinal screw 43 and a longitudinal nut 44 is provided on one side of the displacement base 32. When the longitudinal motor 45, connected to the longitudinal screw 43, is turned on, it drives the longitudinal screw 43 to rotate synchronously, and the longitudinal nut 44 drives the horizontal shaft assembly 33 to move longitudinally. The longitudinal guide rail 41 and the longitudinal slider 42 can be existing linear guide products, and the longitudinal screw 43 and the longitudinal nut 44 can be existing ball screw products.

[0042] like Figures 2 to 4 As shown, preferably, the horizontal axis assembly 33 is provided with a horizontal guide rail 34, a horizontal slider 35, a horizontal module 36, and a horizontal motor 37. The two ends of the horizontal module 36 are respectively fixed to the vertical slider 42, so as to move longitudinally along the vertical guide rail 41. The horizontal guide rail 34 is installed on one side of the horizontal module 36. The vision inspection unit 50 is provided with an inspection base 51. One end of the inspection base 51 is fixed to the drive end of the horizontal module 36, and the other end of the inspection base 51 is fixed to the horizontal slider 35. The horizontal slider 35 and the horizontal guide rail 34 cooperate with each other to form a sliding connection. The horizontal motor 37 is fixed to the horizontal module 36 and provides operating power to the horizontal module 36, so that the horizontal module 36 drives the inspection base 51 to move laterally.

[0043] Specifically, to further improve the stability of the vision inspection unit 50, the horizontal module 36 can be a linear module product from existing products. For mounting the vision inspection unit 50, an L-shaped inspection base 51 is preferably provided, with one end fixed to the horizontal slider 35 and the other end fixed to the drive end of the horizontal module 36, and moving laterally along the horizontal guide rail 34 under the drive of the horizontal module 36.

[0044] like Figure 4 As shown, preferably, the visual inspection unit 50 is further provided with an inspection camera 53, an inspection lens 54 and a ring light source 55 respectively mounted on the inspection base 51. The ring light source 55 is disposed between the bracket 12 and the inspection lens 54 for emitting light to illuminate the inspection area. The inspection lens 54 is disposed between the ring light source 55 and the inspection camera 53 for focusing the light reflected from the inspection area. The inspection camera 53 is disposed at the end of the inspection lens 54 for capturing the focused light.

[0045] Specifically, the inspection lens 54 is vertically aligned upwards with the circuit board solder joints below the bracket 12, and the ring light source 55 surrounds the outside of the inspection lens 54, located directly below the solder joints. The ring light source 55 can be a RGB three-color ring light specifically designed for visual inspection in existing products, which further highlights the defect characteristics of the solder joints; the inspection lens 54 can be a high-definition telecentric lens in existing products, achieving a high depth of field and low distortion optical effect; the inspection camera 53 can be a high-definition color industrial camera, capturing clean color images of the inspection area.

[0046] Secondly, an industrial computer 11 is installed inside the rack 10. The computer has a detection system installed inside. The detection system analyzes and processes the images captured by the detection camera 53 to detect whether there are problems such as insufficient solder, incomplete soldering, short circuit, cold solder joint, solder hole, missing component, etc., and automatically generates the detection results.

[0047] like Figure 3 and Figure 4As shown, preferably, the detection base 51 is also provided with an air knife 52. The air knife 52 is installed on the detection base 51 and is configured on one side of the ring light source and at a position higher than the ring light source. The air knife 52 is connected to an external high-pressure air pump through a pipeline so that high-pressure airflow is blown out from the air knife 52.

[0048] Specifically, although the solder joints are cooled after wave soldering, a small amount of fumes from solder volatilization may remain when transported to the inspection station, affecting the clarity of the image. Therefore, an air knife 52 can be installed on the inspection base 51. High-pressure airflow is blown out at high speed through the openings of the air knife 52 to disperse the fumes, allowing the inspection camera 53 to capture clearer images of the solder joints. In other words, the air knife 52 disperses the fumes by spraying high-pressure airflow, ensuring that the inspection camera 53 acquires a clear image.

[0049] like Figure 2 and Figure 5 As shown, preferably, the conveying mechanism 20 is provided with a synchronous support 23, a synchronous belt 25 and a synchronous motor 26. The synchronous support 23 is fixed to the equipment frame 10. The synchronous belt 25 is rotatably connected to the synchronous support 23 through a synchronous pulley. The synchronous motor 26 is fixed to the synchronous support 23 and is driven to the synchronous belt 25. The bracket 12 is provided with multiple lugs 13 on both sides for overlapping the synchronous belt 25 to achieve conveying.

[0050] Specifically, in order to facilitate the conveying of the bracket 12, synchronous belts 25 can be set on both sides of the synchronous bracket 23 parallel to the conveying direction, and the synchronous belts 25 can be driven by the servo motor or stepper motor in the existing product, so that the synchronous belts 25 on both sides drive the lugs 13 of the bracket 12 at the same time, thereby conveying and moving the bracket 12.

[0051] like Figure 5 As shown, preferably, the synchronous bracket 23 is further provided with a support bar 24, which is fixed to the synchronous bracket 23 and located below the synchronous belt 25, for supporting the synchronous belt 25 with overlapping lug 13.

[0052] Specifically, since the lug 13 of the bracket 12 overlaps the timing belt 25, in order to prevent the timing belt 25 from sinking due to the pressure of the lug 13 of the bracket 12, a support strip 24 can be installed below the timing belt 25, and it should be made of a material with a low coefficient of friction and wear resistance, such as smooth stainless steel.

[0053] like Figure 5 As shown, preferably, the conveying mechanism 20 is further provided with a blocking cylinder 21, which is fixed to the synchronous support 23 and performs a stop operation on the bracket 12 conveyed on the synchronous belt 25.

[0054] Specifically, to stop the carriage 12 conveyed on the conveying mechanism 20 at a preset position, a blocking cylinder 21 can be installed on one side of the synchronous support 23. The blocking roller of the blocking cylinder 21 is used to stop the carriage 12, bringing it to a stop at the position to be tested. In addition, the blocking cylinder 21 can be a buffer-type blocking cylinder 21 from existing products to achieve smooth and quiet braking.

[0055] like Figure 5 As shown, preferably, the conveying mechanism 20 is also provided with a pressing cylinder 22, which is fixed to the synchronous support 23. The pressing cylinder 22 presses down on the lug 13 of the bracket 12 through the piston rod, so that the lug 13, the synchronous belt 25 and the support bar 24 fit tightly together.

[0056] Specifically, after the bracket 12 stops, in order to prevent the timing belt 25 from shaking the bracket 12, a pressing cylinder 22 can be set on both sides of the timing bracket 23 where the timing belt 25 is installed to press down the lug 13 of the bracket 12, so that the lug 13, the timing belt 25 and the support bar 24 are in close contact with each other, thereby making the bracket 12 stop more stably in the preset position, reducing shaking and improving the shooting quality.

[0057] Secondly, to facilitate stable transport of the bracket 12, four sets of lugs 13 can be provided on the bracket 12, and they can be attached to the synchronous belts 25 on both sides in pairs. Similarly, four sets of pressing cylinders 22 are also preferably provided, which can press down on the lugs 13 respectively.

[0058] In addition, a rubber pad with shock absorption function can be provided at the extended end of the piston rod of the pressing cylinder 22 so that it will not cause vibration to the bracket 12 when the lug 13 is pressed down.

[0059] When the conveying mechanism 20 is working, the blocking cylinder 21 first extends the blocking roller to stop the bracket 12 at the preset detection position; then the pressing cylinder 22 is activated, extending the piston rod and pressing down the lug 13 through the rubber pad to ensure that the bracket 12 is stably fixed.

[0060] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A device for visual inspection of multi-station wave soldering, characterized in that, The device includes a conveying mechanism (20) and a detection device (30) mounted on a frame (10). The conveying mechanism (20) conveys a tray (12) containing wave soldered multi-station circuit boards. The detection device (30) is equipped with a displacement mechanism (31) and a vision detection unit (50). The displacement mechanism (31) is mounted on the frame (10) below the conveying mechanism (20). The vision detection unit (50) is mounted on the drive end of the displacement mechanism (31), so that the displacement mechanism (31) drives the vision detection unit (50) to move and perform vision detection on the multi-station wave soldered circuit boards on the tray (12).

2. The equipment for visual inspection of multi-station wave soldering according to claim 1, characterized in that, The displacement mechanism (31) is provided with a displacement base (32), a horizontal axis assembly (33) and a vertical axis assembly (40). The displacement base (32) is mounted on the frame (10). The vertical axis assembly (40) is configured to be perpendicular to the conveying direction of the conveying mechanism (20) and is mounted on the displacement base (32). The horizontal axis assembly (33) is configured to be parallel to the conveying direction of the conveying mechanism (20) and is mounted on the drive end of the vertical axis assembly (40). The vision inspection unit (50) is mounted on the drive end of the horizontal axis assembly (33).

3. The equipment for visual inspection of multi-station wave soldering according to claim 2, characterized in that, The longitudinal axis assembly (40) is provided with a longitudinal guide rail (41), a longitudinal slider (42), a longitudinal screw (43), a longitudinal nut (44), and a longitudinal motor (45). At least two sets of longitudinal guide rails (41) are respectively installed on both sides of the displacement base (32), so that the two ends of the transverse axis assembly (33) are respectively connected to the two sets of longitudinal guide rails (41) through the longitudinal slider (42). The longitudinal screw (43) is rotatably connected to the displacement base (32) through a bearing. The longitudinal motor (45) is fixed to the displacement base (32) and is connected to one end of the longitudinal screw (43). The longitudinal nut (44) and the longitudinal screw (43) cooperate to form a transmission element, so that the transverse axis assembly (33) fixed to the longitudinal nut (44) at one end moves longitudinally along the longitudinal guide rail (41) under the drive of the longitudinal motor (45).

4. The equipment for visual inspection of multi-station wave soldering according to claim 3, characterized in that, The horizontal axis assembly (33) is provided with a horizontal guide rail (34), a horizontal slider (35), a horizontal module (36) and a horizontal motor (37). The two ends of the horizontal module (36) are respectively fixed to the vertical slider (42), so that it can move longitudinally along the vertical guide rail (41). The horizontal guide rail (34) is installed on one side of the horizontal module (36). The vision inspection unit (50) is provided with an inspection base (51). One end of the inspection base (51) is fixed to the drive end of the horizontal module (36), and the other end of the inspection base (51) is fixed to the horizontal slider (35). The horizontal slider (35) and the horizontal guide rail (34) cooperate with each other to form a sliding connection. The horizontal motor (37) is fixed to the horizontal module (36) and provides operating power for the horizontal module (36), so that the horizontal module (36) drives the inspection base (51) to move laterally.

5. The equipment for visual inspection of multi-station wave soldering according to claim 4, characterized in that, The visual inspection unit (50) is also equipped with an inspection camera (53), an inspection lens (54) and a ring light source (55) respectively installed on the inspection base (51). The ring light source (55) is arranged between the bracket (12) and the inspection lens (54) to emit light to illuminate the inspection area. The inspection lens (54) is arranged between the ring light source (55) and the inspection camera (53) to focus the light reflected from the inspection area. The inspection camera (53) is arranged at the end of the inspection lens (54) to capture the focused light.

6. The equipment for visual inspection of multi-station wave soldering according to claim 4, characterized in that, The detection base (51) is also provided with an air knife (52). The air knife (52) is installed on the detection base (51) and is positioned on one side of the ring light source and above the ring light source. The air knife (52) is connected to an external high-pressure air pump through a pipeline so that high-pressure airflow is blown out from the air knife (52).

7. The equipment for visual inspection of multi-station wave soldering according to claim 1, characterized in that, The conveying mechanism (20) is equipped with a synchronous bracket (23), a synchronous belt (25) and a synchronous motor (26). The synchronous bracket (23) is fixed to the equipment frame (10). The synchronous belt (25) is connected to the synchronous bracket (23) through a synchronous pulley. The synchronous motor (26) is fixed to the synchronous bracket (23) and is connected to the synchronous belt (25) for transmission. The bracket (12) has multiple lugs (13) on both sides for overlapping the synchronous belt (25) to achieve conveying.

8. The equipment for visual inspection of multi-station wave soldering according to claim 7, characterized in that, The synchronous bracket (23) is also provided with a support bar (24), which is fixed to the synchronous bracket (23) and located below the synchronous belt (25) to support the synchronous belt (25) of the overlapping lug (13).

9. The equipment for visual inspection of multi-station wave soldering according to claim 7, characterized in that, The conveying mechanism (20) is also equipped with a blocking cylinder (21), which is fixed to the synchronous support (23) and performs a stop operation on the bracket (12) conveyed on the synchronous belt (25).

10. The equipment for visual inspection of multi-station wave soldering according to claim 8, characterized in that, The conveying mechanism (20) is also provided with a pressing cylinder (22), which is fixed to the synchronous support (23). The pressing cylinder (22) presses down on the lug (13) of the bracket (12) through the piston rod, so that the lug (13), the synchronous belt (25) and the support bar (24) fit tightly together.

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