FPC double-sided appearance inspection machine

Abstract

The utility model relates to a kind of FPC double-sided appearance inspection machine, it is characterized by, including: rack assembly, package rack and portal frame;Transfer assembly installed on rack assembly;Transfer assembly package upper rail, first inspection platform, lower rail, moving plate, lifting cylinder and second inspection platform;And two surface inspection components installed on rack assembly;Surface inspection component includes X-axis linear module, moving support, multiple surface inspection cameras and line scanning tunnel light source;First inspection platform and second inspection platform are located between two line scanning tunnel light sources.The above-mentioned FPC double-sided appearance inspection machine, simple structure, convenient to use, with two surface inspection components that are oppositely arranged, first inspection platform and second inspection platform are located between two line scanning tunnel light sources, through the synergies of upper rail, lower rail and lifting cylinder, so that first inspection platform and second inspection platform can be switched, to facilitate double-sided appearance inspection to FPC material.

Description

Technical Field

[0001] This utility model relates to the field of FPC double-sided appearance inspection technology, and in particular to an FPC double-sided appearance inspection machine. Background Technology

[0002] Flexible printed circuit boards (FPCs) are widely used in consumer electronics, automotive electronics, and medical devices due to their thinness and flexibility. As the integration and precision of FPCs increase, their appearance defects (such as scratches, gold finger oxidation, component misalignment, and hole misalignment) have an increasingly significant impact on product performance. Efficient and accurate appearance inspection has become a key requirement in the production process.

[0003] In existing technologies, FPC appearance inspection mainly relies on automated optical inspection (AOI) equipment. This type of equipment captures images of the FPC surface using high-speed cameras and combines them with image processing algorithms to identify defects. However, existing AOI equipment can only inspect one side of the FPC, requiring a flipping mechanism or manual intervention to achieve double-sided inspection, resulting in process redundancy and reduced efficiency. Utility Model Content

[0004] Based on this, the present invention provides an FPC double-sided appearance inspection machine with a simple structure and convenient use. It has two surface inspection components arranged opposite to each other. The first inspection platform and the second inspection platform are located between two line scanning tunnel light sources. Through the coordinated action of the upper guide rail, the lower guide rail and the lifting cylinder, the first inspection platform and the second inspection platform can be switched so that the surface inspection camera can perform double-sided appearance inspection on the FPC material.

[0005] To achieve the objectives of this utility model, the following technical solution is adopted: A double-sided FPC visual inspection machine, characterized in that it comprises: Rack assembly, including the rack and the gantry connected to the top of the rack; A transfer assembly mounted on a rack assembly; the transfer assembly includes upper guide rails mounted at opposite ends inside the rack, a first inspection platform slidably connected to the upper guide rails, lower guide rails parallel and spaced below each upper guide rail, movable plates slidably connected to each lower guide rail, lifting cylinders mounted on each movable plate, and a second inspection platform connected to the lifting cylinders; and Two surface inspection assemblies are mounted on the rack assembly and are arranged opposite each other. Each surface inspection assembly includes an X-axis linear module, a movable bracket connected to the X-axis linear module, multiple surface inspection cameras evenly spaced on the movable bracket, and a line scan tunnel light source mounted on the end of the surface inspection camera away from the X-axis linear module. The line scan tunnel light source is fixedly connected to the movable bracket. The X-axis linear module of one surface inspection assembly is mounted on a gantry, and the X-axis linear module of the other surface inspection assembly is mounted inside the rack. The first inspection platform and the second inspection platform are located between the two line scan tunnel light sources.

[0006] The aforementioned FPC double-sided appearance inspection machine has a simple structure and is easy to use. It has two surface inspection components arranged opposite to each other. The first inspection platform and the second inspection platform are located between two line scanning tunnel light sources. Through the coordinated action of the upper guide rail, the lower guide rail and the lifting cylinder, the first inspection platform and the second inspection platform can be switched so that the surface inspection camera can perform double-sided appearance inspection on the FPC material.

[0007] In one embodiment, both the upper and lower guide rails are arranged along the Y-axis.

[0008] In one embodiment, each surface inspection camera is connected to a movable support via a Z-axis manual lifting slide.

[0009] In one embodiment, the rack assembly further includes a cover covering one side of the top surface of the rack; the gantry is located inside the cover.

[0010] In one embodiment, the FPC double-sided appearance inspection machine further includes a PIN inspection component connected to one side of one of the surface inspection components; the PIN inspection component includes a two-axis robot arm, an electric rotary platform mounted at the end of the two-axis robot arm, a PIN inspection camera mounted on the electric rotary platform, a coaxial light source coaxially mounted at the end of the PIN inspection camera, and a point light source mounted on one side of the coaxial light source; the two-axis robot arm is used to connect to a moving bracket, and the PIN inspection camera and the surface inspection camera are arranged adjacent to each other.

[0011] In one embodiment, the PIN checking component is located above the first checking platform and the second checking platform.

[0012] In one embodiment, the two-axis manipulator has dual-axis motion directions of Y-axis and Z-axis. Attached Figure Description

[0013] Figure 1 This is a three-dimensional schematic diagram of an FPC double-sided appearance inspection machine according to one embodiment of the present invention. Figure 2 for Figure 1 The diagram shown is a schematic diagram of the internal structure of the FPC double-sided visual inspection machine. Figure 3 for Figure 2 An enlarged view of circle A shown; Figure 4 for Figure 2 The diagram shows the internal structure of the FPC double-sided visual inspection machine from another perspective. Figure 5 for Figure 4 The diagram shows the assembly of the second inspection platform in the FPC double-sided visual inspection machine. Figure 6 for Figure 1 The diagram shows a comparison between the two surface inspection components and the PIN inspection component in the FPC double-sided appearance inspection machine. Figure 7 for Figure 6 This is a schematic diagram showing a comparison of the surface inspection component and the PIN inspection component in the FPC double-sided visual inspection machine from another perspective. Figure 8 for Figure 6 The diagram shows a three-dimensional representation of the PIN inspection component in the FPC double-sided appearance inspection machine.

[0014] Attached image annotations: 10-Rack assembly, 11-Rack, 12-Hood, 13-Gantry; 20-Transfer assembly, 21-Upper guide rail, 22-First inspection platform, 23-Lower guide rail, 24-Moving plate, 25-Lifting cylinder, 26-Second inspection platform; 30-Surface inspection assembly, 31-X-axis linear module, 32-moving bracket, 33-Surface inspection camera, 34-line scan tunnel light source; 40 - PIN inspection assembly, 41 - Two-axis robot, 42 - Electric rotary platform, 43 - PIN inspection camera, 44 - Coaxial light source, 45 - Point light source. Detailed Implementation

[0015] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0016] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0018] Please see Figures 1 to 8 This invention discloses a double-sided FPC appearance inspection machine according to one embodiment of the present invention, comprising a frame assembly 10, a transfer assembly 20 mounted on the frame assembly 10, two surface inspection assemblies 30 mounted on the frame assembly 10, and a PIN inspection assembly 40 connected to one side of one of the surface inspection assemblies 30. The two surface inspection assemblies 30 are arranged opposite to each other; one surface inspection assembly 30 is used to inspect the front side of the FPC, and the other surface inspection assembly 30 is used to inspect the back side of the FPC. Double-sided appearance inspection of the FPC can be completed without flipping or turning it over.

[0019] The frame assembly 10 includes a frame 11, a cover 12 covering one side of the top surface of the frame 11, and a gantry 13 connected to the top surface of the frame 11; the gantry 13 is located inside the cover 12. The top surface of the frame 11 is divided into a loading station and an inspection station, wherein the loading station is located outside the cover 12, the inspection station is located inside the cover 12, and the gantry 13 is located above the inspection station.

[0020] Specifically, the bottom of the cover 12 is provided with an inlet and outlet, through which the FPC material can move between the loading station and the inspection station.

[0021] In this embodiment, two surface inspection components 30 are located at corresponding inspection stations. One surface inspection component 30 is mounted on the gantry 13 to inspect the front of the FPC, and the other surface inspection component 30 is mounted inside the rack 11 to inspect the back of the FPC.

[0022] The transfer assembly 20 includes upper guide rails 21 installed at opposite ends inside the frame 11, a first inspection platform 22 slidably connected to the upper guide rails 21, lower guide rails 23 parallelly spaced below each upper guide rail 21, movable plates 24 slidably connected to each lower guide rail 23, lifting cylinders 25 respectively installed on each movable plate 24, and a second inspection platform 26 connected to the lifting cylinders 25; both the first inspection platform 22 and the second inspection platform 26 are used to place the FPC.

[0023] The first inspection platform 22 moves between the loading station and the inspection station along the upper guide rail 21 via a linear module or a synchronous motor belt structure. The second inspection platform 26 moves between the loading station and the inspection station along the lower guide rail 23 via a linear module or a synchronous motor belt structure. The height of the first inspection platform 22 is constant; that is, the height of the first inspection platform 22 is the inspection working height. The second inspection platform 26 needs to be raised to the inspection working height via a lifting cylinder 25. In other words, after entering the inspection station, the second inspection platform 26 needs to be raised to the inspection working height before inspection work can begin. Through the coordinated action of the upper guide rail 21, the lower guide rail 23, and the lifting cylinder 25, the first inspection platform 22 and the second inspection platform 26 can be switched. When the first inspection platform 22 is in inspection work, the second inspection platform 26 is in loading work, and vice versa, greatly improving the overall utilization rate of the machine.

[0024] In this embodiment, both the upper guide rail 21 and the lower guide rail 23 are arranged along the Y-axis direction.

[0025] In this embodiment, the first inspection platform 22 and the second inspection platform 26 are hollowed out or transparent, which facilitates the inspection of the front and back of the FPC.

[0026] The surface inspection assembly 30 includes an X-axis linear module 31, a movable bracket 32 ​​connected to the X-axis linear module 31, a plurality of surface inspection cameras 33 evenly spaced on the movable bracket 32, and a line scan tunnel light source 34 installed at the end of the surface inspection camera 33 away from the X-axis linear module 31; the line scan tunnel light source 34 is fixedly connected to the movable bracket 32.

[0027] Combination Figure 4 and Figure 6 To understand this, one surface inspection component 30 has an X-axis linear module 31 mounted on the gantry 13, and another surface inspection component 30 has an X-axis linear module 31 mounted inside the frame 11; the first inspection platform 22 and the second inspection platform 26 are located between two line scan tunnel light sources 34, so that the surface inspection camera 33 can perform double-sided appearance inspection on the FPC material.

[0028] In this embodiment, each surface inspection camera 33 is also connected to a movable bracket 32 ​​via a Z-axis manual lifting slide, so that the height of the surface inspection camera 33 is adjustable to adapt to the inspection needs of different FPCs.

[0029] The PIN inspection assembly 40 includes a two-axis robot 41, an electric rotary platform 42 mounted at the end of the two-axis robot 41, a PIN inspection camera 43 mounted on the electric rotary platform 42, a coaxial light source 44 coaxially mounted at the end of the PIN inspection camera 43, and a point light source 45 mounted on one side of the coaxial light source 44; wherein, the two-axis robot 41 is used to connect to the moving bracket 32, and the two-axis robot 41 has a dual-axis movement direction of Y-axis and Z-axis; the PIN inspection camera 43 is arranged adjacent to the surface inspection camera 33.

[0030] In this embodiment, the PIN inspection component 40 is located above the first inspection platform 22 and the second inspection platform 26 to facilitate the inspection of the connector portion of the FPC. In other embodiments, the PIN inspection component 40 may also be located below the first inspection platform 22 and the second inspection platform 26. The specific installation position depends on the actual testing requirements and is not limited to a particular orientation.

[0031] The above-mentioned FPC double-sided appearance inspection machine has a simple structure and is easy to use. It has two surface inspection components 30 arranged opposite to each other. The first inspection platform 22 and the second inspection platform 26 are located between two line scanning tunnel light sources 34. Through the coordinated action of the upper guide rail 21, the lower guide rail 23 and the lifting cylinder 25, the first inspection platform 22 and the second inspection platform 26 can be switched so that the surface inspection camera 33 can perform double-sided appearance inspection on the FPC material.

[0032] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0033] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An FPC double-sided appearance inspection machine characterized by comprising: include: Rack assembly, including the rack and the gantry connected to the top of the rack; The transfer assembly is installed on the rack assembly. The transfer assembly includes upper guide rails installed at opposite ends inside the rack, a first inspection platform slidably connected to the upper guide rails, lower guide rails arranged parallel and spaced below each upper guide rail, movable plates slidably connected to each lower guide rail, lifting cylinders installed on each movable plate, and a second inspection platform connected to the lifting cylinders. and Two surface inspection assemblies are mounted on the rack assembly and are arranged opposite each other. Each surface inspection assembly includes an X-axis linear module, a movable bracket connected to the X-axis linear module, multiple surface inspection cameras evenly spaced on the movable bracket, and a line scan tunnel light source mounted on the end of the surface inspection camera away from the X-axis linear module. The line scan tunnel light source is fixedly connected to the movable bracket. The X-axis linear module of one surface inspection assembly is mounted on a gantry, and the X-axis linear module of the other surface inspection assembly is mounted inside the rack. The first inspection platform and the second inspection platform are located between the two line scan tunnel light sources.

2. The FPC double-side appearance inspection machine according to claim 1, characterized by, Both the upper and lower guide rails are set along the Y-axis.

3. The FPC double-side appearance inspection machine according to claim 1, characterized in that, Each surface inspection camera is connected to a movable support via a Z-axis manual lifting slide.

4. The FPC double-side appearance inspection machine according to claim 1, characterized in that, The rack assembly also includes a cover that covers one side of the top surface of the rack; the gantry is located inside the cover.

5. The FPC double-side appearance inspection machine according to claim 1, characterized in that, It also includes a PIN inspection component connected to one side of one of the surface inspection components; the PIN inspection component includes a two-axis robot, an electric rotary platform mounted at the end of the two-axis robot, a PIN inspection camera mounted on the electric rotary platform, a coaxial light source coaxially mounted at the end of the PIN inspection camera, and a point light source mounted on one side of the coaxial light source; the two-axis robot is used to connect to a moving bracket, and the PIN inspection camera and the surface inspection camera are arranged adjacent to each other.

6. The FPC double-side appearance inspection machine according to claim 5, wherein The PIN checking component is located above the first and second checking platforms.

7. The FPC double-side appearance inspection machine according to claim 5, wherein Two-axis robotic arms have dual-axis motion directions, Y-axis and Z-axis.

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