Post-welding detection equipment for junction box

Abstract

The utility model discloses post-welding detection equipment for a junction box, which comprises a rack, a conveying line is arranged in the rack, and servo centering and positioning assemblies for centering and positioning the junction box are arranged on two sides of the conveying line. A material shifting detection assembly and a three-dimensional transfer module for driving the material shifting detection assembly to move to a product detection position are arranged above the conveying line; according to the structure, the poor welding condition of the junction box can be exposed in a contact type picking mode, and then poor welding judgment is carried out through AI vision, so that the detection efficiency and the detection accuracy are ensured.

Description

Technical Field

[0001] The utility model relates to the field of post-weld detection of junction boxes, in particular to post-weld detection equipment for junction boxes. Background Art

[0002] The junction box is an important component of photovoltaic module products. Currently, the quality of junction box welding is almost entirely controlled by manual labor. The junction box welding machine of photovoltaic manufacturers is connected to a manual inspection station. Due to the cycle limit, the module stays at the station for about 10 seconds. The worker needs to complete the probing inspection of three junction box solder joints within 10 seconds. People have fatigue periods, and it is difficult to ensure that each junction box is actually inspected. It is very easy to cause junction box welding quality problems. The junction box is an important component that connects the circuit board and the external device. If a cold solder joint occurs, it will cause unreliable connection or complete disconnection, affecting the normal operation of the equipment. According to statistics, customer complaints caused by junction box welding quality problems after the sale of photovoltaic modules account for 40% of the total customer complaints; the existing junction box welding inspection relies on the appearance comparison between the welding surface and the internal model library, and is non-contact inspection, which is prone to missed judgments and misjudgments. Utility Model Content

[0003] The technical problem solved by the utility model is to provide a post-weld detection device for a junction box which can improve the detection efficiency and detection accuracy of the junction box.

[0004] The utility model solves the technical problem by adopting the following technical solution: a post-weld inspection device for a junction box, comprising a frame, a conveyor line is arranged in the frame, servo centering and positioning components for centering the junction box are arranged on both sides of the conveyor line, a material shifting and detection component and a three-dimensional transfer module for driving the material shifting and detection component to move to a product inspection position are arranged above the conveyor line;

[0005] The material selection detection component includes a mounting frame, a positioning detection component is arranged on one side of the mounting frame, a rotating drive mechanism is arranged on the mounting frame, a driving end of the rotating drive mechanism is connected to a rotating platform connecting plate, a terminal box fixing mechanism for fixing the terminal box is connected to the bottom of the rotating platform connecting plate through a rotating support mounting plate, a cylinder mounting plate is arranged on one side of the rotating platform connecting plate, a lifting drive cylinder is arranged on the cylinder mounting plate, a driving end of the lifting drive cylinder is connected to an up and down floating structure, and a side thrust structure is arranged at the lower end of the up and down floating structure.

[0006] Furthermore, the side-pushing structure includes a side-pushing mounting plate and a first horizontal driving mechanism that drives the side-pushing mounting plate to perform horizontal movement, a fixed turntable is installed at the front end of the side-pushing mounting plate, a first pressure sensor is arranged between the side-pushing mounting plate and the fixed turntable, a mobile turntable is arranged on the side of the fixed turntable away from the first pressure sensor, a protrusion is arranged on the side of the fixed turntable close to the mobile turntable, the upper part of the mobile turntable is hinged to the protrusion, a first spring is arranged at the middle part of the mobile turntable and the fixed turntable bracket, and a material selecting head is arranged at the bottom of the mobile turntable.

[0007] Furthermore, the up and down floating structure includes a floating support frame, a floating support plate is connected above the floating support frame, a guide rail mounting block is arranged on the lower surface of the floating support plate, the guide rail mounting block and the floating support frame are slidably connected by a slide rail and a slider, and also includes an air compressor support cylinder, the air compressor support cylinder body is fixedly connected to the floating support plate, the driving end of the air compressor support cylinder is connected to the floating support frame, and also includes a screw, one end of the screw includes a flange, the other end of the screw passes through the floating support plate and is connected to the floating support frame, a second spring is sleeved on the screw, and the second spring is located between the floating support frame and the floating support plate.

[0008] Furthermore, the junction box fixing mechanism comprises a cylinder clamp, and the cylinder clamp is connected to the rotating support mounting plate.

[0009] Furthermore, the positioning detection component includes a camera fixing block installed on one side of the mounting frame, a camera is arranged on the camera fixing block, and also includes a light source located below the camera.

[0010] Furthermore, the servo centering and positioning assembly includes a first alignment assembly and a second alignment assembly respectively located on both sides of the conveying line;

[0011] The first alignment component comprises a first alignment frame, the first alignment frame is connected to a first mounting bar, the first mounting bar is provided with a first alignment guide wheel in contact with the product, the bottom of the first alignment frame is provided with a first alignment guide rail fixed to the frame, and the bottom of the first alignment frame is slidably connected to the first alignment guide rail;

[0012] The second alignment component comprises a second alignment frame, the second alignment frame is connected to a second mounting bar, the second mounting bar is provided with a second alignment guide wheel in contact with the product, the bottom of the second alignment frame is provided with a second alignment guide rail fixed to the frame, and the bottom of the second alignment frame is slidably connected to the second alignment guide rail;

[0013] A synchronous belt and a motor driving mechanism for driving the synchronous belt to rotate are arranged on one side of the first and second return frames. The first return frame is connected to the upper end of the synchronous belt, and the second return frame is connected to the lower end of the synchronous belt, so that the first return frame and the second return frame can move towards or away from each other.

[0014] Furthermore, a front-end blocking cylinder and a rear-end blocking cylinder are respectively provided at the feed port and the discharge port of the conveyor line, and a lower support block for supporting the junction box and a support block lifting cylinder for driving the lower support block to lift are provided below the conveyor line.

[0015] The beneficial effect of the utility model is that the structure can expose the poor welding of the junction box by contact provocation, and then judge the poor welding by AI vision, thereby ensuring the efficiency and accuracy of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the post-weld detection equipment of the junction box according to an embodiment of the present application.

[0017] Figure 2 This is a schematic diagram of the conveyor line structure of the junction box post-weld inspection equipment according to an embodiment of the present application.

[0018] Figure 3 This is a schematic diagram of the structure of the servo centering and positioning component of the junction box post-weld inspection equipment according to an embodiment of the present application.

[0019] Figure 4 This is a schematic diagram of the structure of the material removal detection component of the post-weld detection equipment for the junction box according to an embodiment of the present application.

[0020] Figure 5 It is a structural schematic diagram of the rotary drive mechanism in the material removal detection assembly of the junction box post-weld detection device according to an embodiment of the present application.

[0021] Figure 6 It is a structural schematic diagram of the up and down floating structure in the material shifting detection component of the junction box post-weld detection equipment of the embodiment of the present application.

[0022] Figure 7 It is a structural schematic diagram of the side push structure in the material removal detection component of the junction box post-weld detection equipment of the embodiment of the present application.

[0023] Figure 8 It is a schematic diagram of the positioning state of the material picking head of the junction box post-weld detection device according to an embodiment of the present application.

[0024] Fig. 9 This is a schematic diagram of the stripping head of the junction box post-weld inspection device according to an embodiment of the present application when inserting a bus bar.

[0025] Fig.10This is a schematic diagram of the bus bar being lifted by the material removal head of the post-weld inspection device for the junction box according to an embodiment of the present application.

[0026] The markings in the figure are:

[0027] Frame 1, conveyor line 2;

[0028] Servo centering positioning assembly 3, first alignment frame 301, first mounting bar 302, first alignment guide wheel 303, second alignment frame 304, second mounting bar 305, second alignment guide wheel 306, synchronous belt 307, motor drive mechanism 308;

[0029] Material shifting detection component 4, mounting frame 41, camera fixing block 421, camera 422, light source 423, rotation drive mechanism 431, rotating platform connecting plate 432, rotating support mounting plate 433, junction box fixing mechanism 434, cylinder mounting plate 435, up and down floating structure 44, lifting drive cylinder 441, floating support frame 442, floating support plate 443, guide rail mounting block 444, pneumatic support cylinder 445, second spring 446, side thrust structure 45, side thrust mounting plate 451, first horizontal drive mechanism 452, fixed turntable 453, first pressure sensor 454, mobile turntable 455, first spring 456, material shifting head 457;

[0030] Three-dimensional transfer module 5, front end blocking cylinder 6, rear end blocking cylinder 7, support block lifting cylinder 8. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0032] like Figure 1 and Figure 2 As shown, the embodiment of the present application discloses a post-weld inspection device for a junction box, characterized in that: it comprises a frame 1, a conveyor line 2 is arranged in the frame 1, servo centering and positioning components 3 for centering the junction box are arranged on both sides of the conveyor line 2, and a material shifting and detection component 4 and a three-dimensional transfer module 5 for driving the material shifting and detection component 4 to move to the product inspection position are arranged above the conveyor line 2;

[0033] The material selection detection component 4 includes a mounting frame 41, a positioning detection component is arranged on one side of the mounting frame 41, a rotating drive mechanism 431 is arranged on the mounting frame 41, the driving end of the rotating drive mechanism 431 is connected to a rotating platform connecting plate 432, the bottom of the rotating platform connecting plate 432 is connected to a terminal box fixing mechanism 434 for fixing the terminal box through a rotating support mounting plate 433, a cylinder mounting plate 435 is arranged on one side of the rotating platform connecting plate 432, a lifting drive cylinder 441 is arranged on the cylinder mounting plate 435, the driving end of the lifting drive cylinder 441 is connected to an up and down floating structure 44, and a side thrust structure 45 is arranged at the lower end of the up and down floating structure.

[0034] It should be explained that the three-dimensional transfer module 5 described above may include various forms, for example, the three-dimensional transfer mounting plate includes an X-axis drive motor on the transfer mounting plate, a drive gear is provided on the driving end of the X-axis drive motor, and also includes a rack provided along the X-axis on the frame 1, the rack is meshed with the drive gear, a Y-axis linear module is provided on the bottom surface of the transfer mounting plate, a Z-axis mounting frame 41 is provided on the driving part of the Y-axis linear module, a Z-axis linear module is provided on the Z-axis mounting frame 41, and the material removal detection component 4 is installed on the driving part of the Z-axis linear module.

[0035] It should be explained that the three-dimensional transfer module 5 and the material shifting detection component 4 described above can be arranged into multiple groups according to actual product requirements, and each group can work independently.

[0036] Specifically, the positioning detection assembly includes a camera fixing block 421 installed on one side of the mounting frame 41, a camera 422 is arranged on the camera fixing block 421, and also includes a light source 423 located below the camera 422. The camera 422 is purchased and can realize the positioning detection function.

[0037] Specifically, when working, the photovoltaic component is transmitted forward on the conveyor line 2. When it moves to the right position, the busbar position on the photovoltaic component is detected by the positioning detection component. Then, under the action of the three-dimensional transfer module 5, the material detection component 4 is moved to the positioning position, and the position of the junction box fixing mechanism 434 and the side push structure 45 are rotationally adjusted by the rotating drive mechanism 431. After the adjustment is complete, the side push mechanism is pressed against one side of the busbar in the junction box, and then the side push mechanism is inserted into the busbar. The lifting drive cylinder 441 drives the side push mechanism to move upward and lifts the unwelded part of the busbar, thereby exposing the size of the welding part. Then the positioning detection component measures the size of the welding part, and the length of the size is used as the criterion for judging whether there is a false weld or poor welding.

[0038] This structure can expose the poor welding of the junction box by contact provocation, and then judge the poor welding by AI vision, so as to ensure the efficiency and accuracy of detection. At the same time, the downward pressure of the side push structure 45 can be guaranteed by setting the upper and lower floating structures 44 in this structure, so as to ensure that the side push mechanism can be inserted under the bus bar and lift one end of the bus bar. At the same time, it can also prevent the downward pressure of the side push mechanism from being too large, causing damage to the junction box or the side push mechanism.

[0039] In this embodiment, Figure 7 As shown, the side-pushing structure 45 includes a side-pushing mounting plate 451 and a first horizontal driving mechanism 452 for driving the side-pushing mounting plate 451 to perform horizontal movement, a fixed turntable 453 is installed at the front end of the side-pushing mounting plate 451, a first pressure sensor 454 is arranged between the side-pushing mounting plate 451 and the fixed turntable 453, a movable turntable 455 is arranged on the side of the fixed turntable 453 away from the first pressure sensor 454, a protrusion is arranged on the side of the fixed turntable 453 close to the movable turntable 455, the upper part of the movable turntable 455 is hinged to the protrusion, a first spring 456 is arranged at the middle part of the movable turntable 455 and the fixed turntable 453 bracket, and a material shifting head 457 is arranged at the bottom of the movable turntable 455.

[0040] When doing specific work, such as Figures 8 to 10 As shown, when the side push mechanism moves into place, the first horizontal driving mechanism 452 drives the side push mounting plate 451 to move forward, so that the material picking head 457 is inserted under the bus bar. At this time, the first pressure sensor 454 can detect the pressure of the material picking head 457 when it is inserted in real time. After the material picking head 457 is inserted for a certain distance, the lifting driving cylinder 441 drives the side push mechanism to move upward to lift one end of the bus bar. During the movement, the bus bar will give a reverse force to the material picking head 457, so that the movable turntable 455 equipped with the material picking head 457 can rotate relative to the fixed turntable 453. At this time, the first spring 456 is compressed. After completing the lifting operation of the bus bar, the first spring 456 drives the material picking head 457 to reset.

[0041] This structure can realize the lifting operation of one end of the bus bar, so as to facilitate the subsequent detection of the bus bar. At the same time, through the setting of the first pressure sensor 454 in this structure, the pressure when the material removing head 457 is inserted can be detected in real time, so as to prevent the material removing head 457 from being inserted into the wrong position and causing damage to the bus bar or the material removing head 457. At the same time, in this structure, the movable turntable 455 and the fixed turntable 453 are arranged to be relatively rotatable, so that when the bus bar is lifted, the material removing head 457 can perform a certain degree of flexible rotation, thereby reducing the damage caused by the hard contact between the two.

[0042] In this embodiment, Figure 6As shown, the up and down floating structure includes a floating support frame 442, a floating support plate 443 is connected above the floating support frame 442, a guide rail mounting block 444 is provided on the lower surface of the floating support plate 443, the guide rail mounting block 444 and the floating support frame 442 are slidably connected by a slide rail and a slider, and also includes an air compressor support cylinder 445, the air compressor support cylinder 445 body is fixedly connected to the floating support plate 443, the driving end of the air compressor support cylinder 445 is connected to the floating support frame 442, and also includes a second spring 446, and the second spring 446 is located between the floating support frame 442 and the floating support plate 443.

[0043] It needs to be explained that in this structure, photoelectric switches and induction sheets are correspondingly arranged on the guide rail mounting block 444 and the floating support frame 442 .

[0044] Specifically, when the side-push mechanism moves to above the specified position, the lifting drive cylinder 441 drives the floating support plate 443 to move downward, so that the floating support plate 443 drives the floating support frame 442 to move downward together, until the material-push head 457 in the side-push structure 45 contacts the product, and then the lifting drive cylinder 441 drives the floating support plate 443 to continue to move downward. At this time, the floating support frame 442 moves upward relative to the floating support plate 443 under the reaction force given by the product, so that when the photoelectric switch senses the sensor sheet, it means that the movement is in place at this time, and the lifting drive cylinder 441 no longer drives the support plate to continue to move downward. At the same time, the pneumatic support cylinder 445 is ventilated and fixed, thereby completing the entire operation.

[0045] The structure can ensure the contact between the material shifting head 457 and the product in the side push mechanism through the above design, and can also ensure the pressing force when the material shifting head 457 contacts the product, so as to ensure that the subsequent material shifting head 457 can successfully pick up the product.

[0046] In this embodiment, the junction box fixing mechanism 434 includes a cylinder clamp, and the cylinder clamp is connected to the rotating support mounting plate 433.

[0047] Specifically, when a material shifting operation is required, the cylinder clamps the junction box firmly, so that when the busbar is subsequently shifted, the junction box will not be displaced, thereby affecting subsequent operations.

[0048] In this embodiment, Figure 3 As shown, the servo centering and positioning assembly 3 includes a first alignment assembly and a second alignment assembly respectively located on both sides of the conveying line 2;

[0049] The first alignment component includes a first alignment frame 301, the first alignment frame 301 is connected to a first mounting bar 302, the first mounting bar 302 is provided with a first alignment guide wheel 303 in contact with the product, the first alignment frame 301 is provided with a first alignment rail fixed to the frame 1 at the bottom, and the first alignment frame 301 is slidably connected to the first alignment rail at the bottom;

[0050] The second alignment component includes a second alignment frame 304, the second alignment frame 304 is connected to a second mounting bar 305, the second mounting bar 305 is provided with a second alignment guide wheel 306 in contact with the product, the bottom of the second alignment frame 304 is provided with a second alignment rail fixed to the frame 1, and the bottom of the second alignment frame 304 is slidably connected to the second alignment rail;

[0051] A synchronous belt 307 and a motor driving mechanism 308 for driving the synchronous belt 307 to rotate are provided on one side of the first return frame 301 and the second return frame 304. The first return frame 301 is connected to the upper end of the synchronous belt 307, and the second return frame 304 is connected to the lower end of the synchronous belt 307, so that the first return frame 301 and the second return frame 304 can move towards or away from each other.

[0052] The feed port and the discharge port of the conveyor line 2 are respectively provided with a front end blocking cylinder 6 and a rear end blocking cylinder 7, and a lower support block for supporting the junction box and a support block lifting cylinder 8 for driving the lower support block to lift are provided below the conveyor line 2.

[0053] Specifically, when working, the photovoltaic component is transmitted forward on the transmission line, and the front end blocking cylinder 6 is lifted to prevent the photovoltaic component from continuing to move forward. Then, the rear end blocking cylinder 7 is also lifted upward to prevent the next photovoltaic component from moving forward. When the photovoltaic component is blocked by the front end blocking cylinder 6, the support block lifts the cylinder 8 to push the photovoltaic component away from the transmission line. Then the motor drive mechanism 308 drives the synchronous belt 307 to rotate, so that the first alignment frame 301 and the second alignment frame 304 move toward each other, so that the photovoltaic component is aligned and clamped between the first alignment guide wheel 303 and the second alignment guide wheel 306, thereby realizing the alignment operation of the photovoltaic component and ensuring the accuracy of the position of the photovoltaic component.

[0054] This structure uses a motor drive mechanism 308 to simultaneously drive two alignment components to move toward or away from each other, thereby reducing the use of drive mechanisms. At the same time, when performing the alignment operation, the alignment guide wheel is used to contact the product, thereby reducing damage to the edge of the photovoltaic component and ensuring the yield rate of the product.

[0055] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A post-weld inspection device for a junction box, characterized in that: The machine comprises a frame (1), a conveyor line (2) is arranged in the frame (1), servo centering and positioning components (3) for centering and positioning the junction box are arranged on both sides of the conveyor line (2), and a material shifting and detection component (4) and a three-dimensional transfer module (5) for driving the material shifting and detection component (4) to move to a product detection position are arranged above the conveyor line (2); The material shifting detection assembly (4) comprises a mounting frame (41), a positioning detection assembly is arranged on one side of the mounting frame (41), a rotating drive mechanism (431) is arranged on the mounting frame (41), a driving end of the rotating drive mechanism (431) is connected to a rotating platform connecting plate (432), a bottom of the rotating platform connecting plate (432) is connected to a terminal box fixing mechanism (434) for fixing a terminal box via a rotating support mounting plate (433), a cylinder mounting plate (435) is arranged on one side of the rotating platform connecting plate (432), a lifting drive cylinder (441) is arranged on the cylinder mounting plate (435), a driving end of the lifting drive cylinder (441) is connected to an up-and-down floating structure (44), and a side thrust structure (45) is arranged at the lower end of the up-and-down floating structure.

2. The post-weld inspection device for junction boxes according to claim 1, characterized in that: The side thrust structure (45) comprises a side thrust mounting plate (451) and a first horizontal driving mechanism (452) for driving the side thrust mounting plate (451) to perform horizontal movement; a fixed turntable (453) is mounted at the front end of the side thrust mounting plate (451); a first pressure sensor (454) is arranged between the side thrust mounting plate (451) and the fixed turntable (453); a movable turntable (455) is arranged on the side of the fixed turntable (453) away from the first pressure sensor (454); a protrusion is arranged on the side of the fixed turntable (453) close to the movable turntable (455); the upper part of the movable turntable (455) is hinged to the protrusion; a first spring (456) is arranged at the middle part of the movable turntable (455) and a bracket of the fixed turntable (453); and a material shifting head (457) is arranged at the bottom of the movable turntable (455).

3. The post-weld inspection device for junction boxes according to claim 1, characterized in that: The up and down floating structure includes a floating support frame (442), a floating support plate (443) is connected above the floating support frame (442), a guide rail mounting block (444) is provided on the lower surface of the floating support plate (443), the guide rail mounting block (444) and the floating support frame (442) are slidably connected through a slide rail and a slider, and also includes an air pressure support cylinder (445), the air pressure support cylinder (445) body is fixedly connected to the floating support plate (443), the driving end of the air pressure support cylinder (445) is connected to the floating support frame (442), and also includes a second spring (446), the second spring (446) is located between the floating support frame (442) and the floating support plate (443).

4. The post-weld inspection device for junction boxes according to claim 1, characterized in that: The junction box fixing mechanism (434) comprises a cylinder clamping jaw, and the cylinder clamping jaw is connected to the rotating support mounting plate (433).

5. The post-weld inspection device for junction boxes according to claim 1, characterized in that: The positioning detection component comprises a camera fixing block (421) mounted on one side of a mounting frame (41), a camera (422) being arranged on the camera fixing block (421), and also comprises a light source (423) located below the camera (422).

6. The post-weld inspection device for junction boxes according to claim 1, characterized in that: The servo centering and positioning assembly (3) comprises a first alignment assembly and a second alignment assembly respectively located on both sides of the conveying line (2); The first alignment component comprises a first alignment frame (301), the first alignment frame (301) is connected to a first mounting bar (302), the first mounting bar (302) is provided with a first alignment guide wheel (303) in contact with the product, the bottom of the first alignment frame (301) is provided with a first alignment guide rail fixed to the frame (1), and the bottom of the first alignment frame (301) is slidably connected to the first alignment guide rail; The second alignment component comprises a second alignment frame (304), the second alignment frame (304) is connected to a second mounting bar (305), the second mounting bar (305) is provided with a second alignment guide wheel (306) in contact with the product, the bottom of the second alignment frame (304) is provided with a second alignment guide rail fixed to the frame (1), and the bottom of the second alignment frame (304) is slidably connected to the second alignment guide rail; A synchronous belt (307) and a motor driving mechanism (308) for driving the synchronous belt (307) to rotate are arranged on one side of the first return frame (301) and the second return frame (304); the first return frame (301) is connected to the upper end of the synchronous belt (307), and the second return frame (304) is connected to the lower end of the synchronous belt (307), so that the first return frame (301) and the second return frame (304) can move towards or away from each other.

7. The post-weld inspection device for junction boxes according to claim 1, characterized in that: A front end blocking cylinder (6) and a rear end blocking cylinder (7) are respectively arranged at the feed inlet and the discharge outlet of the conveyor line (2), and a lower support block for supporting a junction box and a support block lifting cylinder (8) for driving the lower support block to lift are arranged below the conveyor line (2).

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