A PCB board sample photographing scanning device for first piece detection

Abstract

The utility model discloses a kind of PCB board sample piece photographing scanning devices for first piece detection, comprising: device pedestal, photographing scanning equipment and illuminating lamp are arranged in darkroom in it;Positioning fixture, it is located in darkroom, support seat is correspondingly arranged in it with photographing scanning equipment, first clamping plate, second clamping plate are slidably arranged in the both sides of support seat;Driving mechanism, it includes central pivot, edge pivot, conveyor belt assembly arranged in positioning fixture, first clamping plate, second clamping plate respectively through positioning component butt joint one side of conveyor belt, relative to the other side;Control console, it is arranged on device pedestal.The utility model can solve the problem that the quality of sample piece photo is uncontrollable by the existing photographing scanning device after positioning to PCB board of different sizes, they cannot be directly aligned, position adjustment is also needed, first piece detection efficiency is low, and it is disturbed by environmental light source, light,

Description

Technical Field

[0001] This utility model relates to the field of PCB manufacturing technology, specifically a PCB sample photographing and scanning device for first article inspection. Background Technology

[0002] In the PCB manufacturing process, a series of PCB inspection procedures are required, such as first-article inspection. Before mass production of PCBs, a small batch of samples is manufactured for quality testing. If the samples meet the standards, mass production can proceed. Otherwise, the corresponding production process parameters need to be adjusted, and pre-production is repeated until the samples meet the standards before mass production of PCBs begins. Besides testing the specified parameters of the samples, first-article inspection also requires photographing and scanning them to back up the images along with the inspection results. However, existing photographic scanning devices cannot directly align with PCBs of different sizes after positioning, requiring adjustments to their positions, which is inefficient. Furthermore, PCBs are generally exposed to the external environment, making the quality of sample photos uncontrollable due to interference from ambient light and lighting conditions. This further contributes to the low efficiency of first-article inspection. Utility Model Content

[0003] The purpose of this invention is to provide a PCB sample scanning device for first-piece inspection, which addresses the problems that existing scanning devices cannot directly align PCBs of different sizes after positioning, requiring position adjustments, resulting in low first-piece inspection efficiency and uncontrollable sample image quality due to interference from ambient light and ambient light.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a PCB board sample photographing and scanning device for first-article inspection, comprising:

[0005] The device base contains a darkroom equipped with photographic and scanning equipment and lighting.

[0006] A positioning fixture is provided in the darkroom, and a support base is provided inside the fixture corresponding to the imaging and scanning device. A first clamping plate and a second clamping plate are slidably provided on both sides of the support base. A guide post of the darkroom slides through the first clamping plate and the second clamping plate. A PCB board is arranged on the support base and between the first clamping plate and the second clamping plate.

[0007] The drive mechanism includes a central rotating shaft and an edge rotating shaft rotatably disposed within the positioning fixture, and a conveyor belt assembly. The conveyor belt assembly includes a first synchronous pulley, a second synchronous pulley, and a conveyor belt. The first synchronous pulley and the second synchronous pulley are respectively disposed on the central rotating shaft and the edge rotating shaft. The conveyor belt is sleeved on the first synchronous pulley and the second synchronous pulley. The first clamping plate and the second clamping plate are respectively connected to one side and the opposite side of the conveyor belt through the positioning assembly.

[0008] The control console is mounted on the base of the device.

[0009] As a further description of the above technical solution:

[0010] The positioning fixture has a drawer-type structure and is slidably disposed in the dark chamber. A sealing flange is provided on its outer edge, and the sealing flange is fitted into the opening of the dark chamber.

[0011] As a further description of the above technical solution:

[0012] The support base is assembled into the positioning fixture by a first bolt, and the protrusion on the surface of the PCB board is embedded in the countersunk groove at the top of the first bolt.

[0013] As a further description of the above technical solution:

[0014] The top of the positioning fixture is provided with a mounting baffle, the central rotating shaft and / or the edge rotating shaft rotate through the mounting baffle and mate with the knob, and a friction damping pad is provided between the mounting baffle and the knob.

[0015] As a further description of the above technical solution:

[0016] The positioning component includes a protective sleeve, a first clamp, and a second clamp. The protective sleeve is fitted and positioned on the conveyor belt. The first clamp and the second clamp are both U-shaped structures with their openings facing each other. The first clamp is fitted and assembled on the protective sleeve, and the second clamp is fitted and assembled on the first clamp and the protective sleeve. The first clamp and the second clamp are positioned by a second bolt.

[0017] As a further description of the above technical solution:

[0018] The protective sleeve is embedded in the groove inside the first jacket, and the protrusions on its surface are embedded in the limiting groove inside the groove.

[0019] In summary, by adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art:

[0020] In use, the PCB sample scanning device of this utility model places the PCB board on the support base and rotates the knob, causing the first synchronous wheel, the second synchronous wheel, and the conveyor belt to drive and rotate synchronously. The first clamping plate and the second clamping plate move inward synchronously, positioning the PCB board in the center of the support base. This design can be used to clamp and position PCB boards of different sizes, ensuring that different PCB boards are positioned in the center of the support base and within the scanning range of the scanning device. This achieves rapid alignment between the sample and the scanning device, ensuring the acquisition of complete sample photos for backup during first-piece inspection. The PCB board is placed in a dark chamber, with internal lighting arranged and illuminated by lamps, ensuring uniform brightness of the sample. Compared to directly exposing the sample to the external environment for photography, this avoids interference from ambient light sources and improves the controllability of sample photo quality. Furthermore, friction damping pads create friction damping between the mounting baffle and the knob, achieving positioning of the drive mechanism and clamping plates, thereby improving the stability of PCB board positioning and ensuring sample photo quality. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of a PCB board sample scanning device for first article inspection.

[0023] Figure 2 This is a cross-sectional view of a PCB board sample scanning device for first article inspection (control console omitted).

[0024] Figure 3 This is a cross-sectional view of a positioning fixture in a PCB board sample photographing and scanning device used for first article inspection.

[0025] Figure 4 This is a schematic diagram of the structure of a first clamping plate, a second clamping plate, and a conveyor belt in a PCB board sample photographing and scanning device used for first article inspection.

[0026] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0027] Legend:

[0028] 1. Device base; 2. Darkroom; 3. Photographing and scanning equipment; 4. Lighting lamp; 5. Positioning fixture; 6. Support base; 7. First clamping plate; 8. Second clamping plate; 9. Guide post; 10. First synchronous pulley; 11. Second synchronous pulley; 12. Conveyor belt; 13. Central rotating shaft; 14. Positioning assembly; 15. Control console; 16. First bolt; 17. Countersunk groove; 18. Mounting baffle; 19. Knob; 20. Protective sleeve; 21. First clamping sleeve; 22. Second clamping sleeve; 23. Second bolt; 24. Groove; 25. Protrusion; 26. Limiting groove; 100. PCB board. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0030] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] Example 1:

[0032] Please see Figure 1-5 This utility model provides a technical solution: a PCB board sample photographing and scanning device for first article inspection, comprising:

[0033] The device base 1 contains a darkroom 2 in which a photographic scanning device 3 and a lighting lamp 4 are installed; the photographic scanning device 3 and the lighting lamp 4 can be connected to a driving device for movable installation or fixed inside the device base 1.

[0034] The positioning fixture 5 is located in the dark chamber 2, and a support base 6 is provided inside the fixture corresponding to the imaging and scanning device 3. A first clamping plate 7 and a second clamping plate 8 are slidably arranged on both sides of the support base 6. The guide post 9 of the dark chamber 2 slides through the first clamping plate 7 and the second clamping plate 8. The PCB board 100 is arranged on the support base 6 and between the first clamping plate 7 and the second clamping plate 8.

[0035] The drive mechanism includes a central rotating shaft 13 and an edge rotating shaft rotatably disposed within the positioning fixture 5, and a conveyor belt assembly. The conveyor belt assembly includes a first synchronous pulley 10, a second synchronous pulley 11, and a conveyor belt 12. The first synchronous pulley 10 and the second synchronous pulley 11 are respectively disposed on the central rotating shaft 13 and the edge rotating shaft. The conveyor belt 12 is sleeved on the first synchronous pulley 10 and the second synchronous pulley 11. The first clamping plate 7 and the second clamping plate 8 are respectively connected to one side and the opposite side of the conveyor belt 12 through the positioning assembly 14.

[0036] The control console 15 is mounted on the device base 1.

[0037] The top of the positioning fixture 5 is provided with a mounting baffle 18, the central rotating shaft 13 or / and the edge rotating shaft rotate through the mounting baffle 18 and connect to the knob 19, and a friction damping pad is provided between the mounting baffle 18 and the knob 19.

[0038] The working principle of the PCB board sample photographing and scanning device for first article inspection in this embodiment includes: In use, the PCB board 100 is placed on the support base 6, and the knob 19 is rotated so that the first synchronous wheel 10, the second synchronous wheel 11, and the conveyor belt 12 drive and operate synchronously. The first clamping plate 7 and the second clamping plate 8 move inward synchronously, so that the PCB board 100 is positioned in the center of the support base 6. This design can be used to clamp and position PCB boards 100 of different sizes, and can position different PCB boards 100 in the center of the support base 6 and within the scanning range of the photographing and scanning device 3, so as to achieve rapid alignment between the sample and the photographing and scanning device 3, and ensure that a complete sample photo is obtained for backup during first article inspection. The PCB board 100 is placed in the darkroom 2, and the internal light layout and illumination are carried out by the lighting lamp 4, which can ensure uniform brightness of the sample. Compared with the method of photographing the sample directly exposed to the external environment, it can avoid the interference of ambient light sources and light, and improve the controllability of the sample photo quality. In addition, friction damping pads are used to create friction damping between the mounting baffle 18 and the knob 19 to achieve positioning of the drive mechanism and clamping plate, thereby improving the stability of the PCB board 100 positioning and ensuring the quality of the sample photos.

[0039] Example 2:

[0040] Please see Figure 1-3The figure shows a PCB board sample photographing and scanning device for first-piece inspection provided in Embodiment 2 of this utility model. Based on the above embodiments, this embodiment further improves upon the following technical solution: the positioning fixture 5 has a drawer-type structure, which slides within the dark chamber 2. A sealing flange is provided on its outer edge, and the sealing flange engages with the opening of the dark chamber 2. This improves the convenience of operations such as removing and inserting the positioning fixture 5, and placing and removing the PCB board 100. Furthermore, the positioning fixture 5 is tightly embedded in the dark chamber 2, enhancing the blocking effect against external light.

[0041] Example 3:

[0042] Please see Figure 3 The figure shows a PCB board sample photographing and scanning device for first-piece inspection provided in Embodiment 3 of this utility model. Based on the above embodiments, this embodiment further improves upon the following technical solution: the support base 6 is assembled into the positioning fixture 5 by a first bolt 16, and the protrusion on the surface of the PCB board 100 is embedded in the countersunk groove 17 at the top of the first bolt 16. This allows the PCB board 100 to be initially positioned when placed on the support base 6 through the mating cooperation between the protrusion and the countersunk groove 17. Then, the clamping plate is adjusted to hold the PCB board 100, achieving full positioning. This improves the positioning strength and ease of operation of the PCB board 100.

[0043] Example 4:

[0044] Please see Figure 4 , 5 The figure shows a PCB sample photographing and scanning device for first-piece inspection provided in Embodiment 4 of this utility model. Based on the above embodiments, this embodiment further improves upon the following technical solution: The positioning component 14 includes a protective sleeve 20, a first clamping sleeve 21, and a second clamping sleeve 22. The protective sleeve 20 is fitted onto the conveyor belt 12. The first clamping sleeve 21 and the second clamping sleeve 22 are both U-shaped structures with opposite openings. The first clamping sleeve 21 is fitted onto the protective sleeve 20, and the second clamping sleeve 22 is fitted onto the first clamping sleeve 21 and the protective sleeve 20. The first clamping sleeve 21 and the second clamping sleeve 22 are positioned by a second bolt 23. Because the conveyor belt 12 of this device pulls the clamping plate, it is necessary to reinforce the docking structure between the positioning component 14 and the conveyor belt 12. The conventional method of directly bolting the component onto the positioning component 14 through the conveyor belt 12 is abandoned to avoid perforation of the conveyor belt 12, which would reduce the structural strength at that point and pose a risk of breakage under tension, thus reducing the stability and service life of the drive mechanism.

[0045] Specifically, the protective sleeve 20 is tightly fitted onto the conveyor belt 12 to reinforce the area where it docks with the positioning component 14 and prevent breakage. Then, the sleeve is wrapped and assembled onto the protective sleeve 20, and bolts are used to fix and shape the two sleeves. This achieves a full, high-strength, and non-destructive docking between the conveyor belt 12 and the positioning component 14, thereby improving the operational stability of the drive mechanism.

[0046] The protective sleeve 20 is embedded in the groove 24 inside the first clamp 21, and the protrusions 25 on its surface are embedded in the limiting grooves 26 within the groove 24. The embedded assembly of the protective sleeve 20 and the protrusions 25 within the clamp further improves the tightness of the structural connection, preventing relative slippage or loosening that could affect the operational stability of the drive mechanism. Furthermore, the first clamp 21 can adopt a clamp-type structure with two L-shaped plates hinged at one end to improve the ease of assembly and disassembly with the protective sleeve 20.

[0047] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A PCB board sample photographing and scanning device for first article inspection, characterized in that, include: The device base contains a darkroom equipped with photographic and scanning equipment and lighting. A positioning fixture is provided in the darkroom, and a support base is provided inside the fixture corresponding to the imaging and scanning device. A first clamping plate and a second clamping plate are slidably provided on both sides of the support base. A guide post of the darkroom slides through the first clamping plate and the second clamping plate. A PCB board is arranged on the support base and between the first clamping plate and the second clamping plate. The drive mechanism includes a central rotating shaft and an edge rotating shaft rotatably disposed within the positioning fixture, and a conveyor belt assembly. The conveyor belt assembly includes a first synchronous pulley, a second synchronous pulley, and a conveyor belt. The first synchronous pulley and the second synchronous pulley are respectively disposed on the central rotating shaft and the edge rotating shaft. The conveyor belt is sleeved on the first synchronous pulley and the second synchronous pulley. The first clamping plate and the second clamping plate are respectively connected to one side and the opposite side of the conveyor belt through the positioning assembly. The control console is mounted on the base of the device.

2. The PCB board sample photographing and scanning device for first article inspection according to claim 1, characterized in that, The positioning fixture has a drawer-type structure and is slidably disposed in the dark chamber. A sealing flange is provided on its outer edge, and the sealing flange is fitted into the opening of the dark chamber.

3. The PCB board sample photographing and scanning device for first article inspection according to claim 1, characterized in that, The support base is assembled into the positioning fixture by a first bolt, and the protrusion on the surface of the PCB board is embedded in the countersunk groove at the top of the first bolt.

4. The PCB board sample photographing and scanning device for first article inspection according to claim 1, characterized in that, The top of the positioning fixture is provided with a mounting baffle, the central rotating shaft and / or the edge rotating shaft rotate through the mounting baffle and mate with the knob, and a friction damping pad is provided between the mounting baffle and the knob.

5. A PCB board sample photographing and scanning device for first-article inspection according to claim 1, characterized in that, The positioning component includes a protective sleeve, a first clamp, and a second clamp. The protective sleeve is fitted and positioned on the conveyor belt. The first clamp and the second clamp are both U-shaped structures with their openings facing each other. The first clamp is fitted and assembled on the protective sleeve, and the second clamp is fitted and assembled on the first clamp and the protective sleeve. The first clamp and the second clamp are positioned by a second bolt.

6. A PCB board sample photographing and scanning device for first-article inspection according to claim 5, characterized in that, The protective sleeve is embedded in the groove inside the first jacket, and the protrusions on its surface are embedded in the limiting groove inside the groove.

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