Appearance detection machine applied to flexible circuit board

Abstract

According to the appearance detection machine applied to the flexible circuit board, a workpiece is placed on a first lifting vacuum air suction platform, a first platform moving and lifting assembly drives the first lifting vacuum air suction platform to move and lift, and the first lifting vacuum air suction platform is matched with a first photographing detection assembly to detect the front face of the workpiece; the vacuum air suction platform is in butt joint with the first lifting vacuum air suction platform to bear the workpiece with the front face photographed, the vacuum air suction platform is arranged on the overturning assembly and driven by the overturning assembly to integrally overturn together with the workpiece so that the reverse face of the workpiece can face upwards, and the vacuum air suction platform and the second photographing detection assembly are matched to detect the reverse face of the workpiece. The second lifting vacuum air suction platform is in butt joint with the vacuum air suction platform to receive the workpiece after reverse side detection, and the second lifting vacuum air suction platform is driven by the second platform moving and lifting assembly to ascend, descend and move to send the detected workpiece to a material receiving position. And full-coverage detection is carried out on product defects and badness, so that the three-defect detection problems of irregularity, no quantification and no standard in FPC appearance detection are solved.

Description

Technical field:

[0001] The utility model relates to an appearance detection machine applied to a flexible circuit board. Background technology:

[0002] During the production process of flexible printed circuits (FPCs), it is generally necessary to inspect their appearance. Defects and faults such as the FPC nickel sheet under the aluminum bar, laser solder joint offset, laser solder joint leakage, hot rivet columns not hot-riveted, aluminum-palladium installed upside down, and thermal pad missing must be inspected. In the existing technology, only manual inspection can be performed, which will result in low efficiency, unstable judgment standards, missed inspections, and other problems. Utility model content:

[0003] In view of the above-mentioned problems in the prior art, the purpose of the utility model is to provide an appearance inspection machine for flexible circuit boards, to help achieve fully automated operations, to perform full coverage inspection of product defects and poor products, and to solve the problem of irregular, non-quantitative and non-standard defect detection in FPC appearance inspection.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The appearance inspection machine applied to flexible circuit boards comprises a machine platform, on which are arranged mutually cooperating lifting vacuum suction platform 1, platform moving lifting component 1, photo detection component 1, vacuum suction platform, flip component, photo detection component 2, lifting vacuum suction platform 2, and platform moving lifting component 2; wherein, the workpiece is placed on the lifting vacuum suction platform 1, the platform moving lifting component 1 drives the lifting vacuum suction platform 1 to move and lift, the lifting vacuum suction platform 1 cooperates with the photo detection component 1 to detect the front side of the workpiece; the vacuum suction platform is docked with the lifting vacuum suction platform 1 to receive the workpiece after the front side is photographed, the vacuum suction platform is arranged on the flip component and driven by it to flip together with the workpiece so that the back side of the workpiece faces upward, the vacuum suction platform cooperates with the photo detection component 2 to detect the back side of the workpiece; the lifting vacuum suction platform 2 is docked with the vacuum suction platform to receive the workpiece after the back side is inspected, the lifting vacuum suction platform 2 is driven by the platform moving lifting component 2 to lift and move to send the inspected workpiece to the receiving position.

[0006] Furthermore, the platform moving lifting assembly includes a moving motor, a screw assembly and a lifting cylinder that cooperate with each other; the lifting vacuum suction platform includes a platform bottom plate and a platform upper plate; wherein the moving motor is fixed to the machine platform, the moving motor drives the screw assembly to move, the screw assembly cooperates with the platform bottom plate and moves integrally with it, the platform upper plate is arranged above the platform bottom plate, the lifting cylinder is arranged on the platform bottom plate, and the lifting cylinder drives the platform upper plate to rise and fall relative to the platform bottom plate.

[0007] Further, the first photographing and detecting component includes an X-axis linear motor set I, a first slide rail, and a first X-axis photographing camera that cooperate with each other. Among them, the first slide rail is fixed to the machine table, the first X-axis photographing camera is arranged on the first slide rail, and the X-axis linear motor set I drives the first X-axis photographing camera to move along the first slide rail.

[0008] Further, the second photographing and detecting component includes an X-axis linear motor set II, a second slide rail, and a second X-axis photographing camera that cooperate with each other. Among them, the second slide rail is fixed to the machine table, the second X-axis photographing camera is arranged on the second slide rail, and the X-axis linear motor set II drives the second X-axis photographing camera to move along the second slide rail.

[0009] Further, the flipping component includes a flipping motor and a flipping frame that cooperate with each other. Among them, the flipping motor is installed on the machine table, the flipping motor drives the flipping frame to rotate forward or backward, and the vacuum suction platform is installed on the flipping frame and rotates integrally with it.

[0010] With the above technical solution, the first lifting vacuum suction platform manually places and sucks the material stably for front-side detection, the 180-degree flipping mechanism automatically adsorbs and flips the product to detect the back side, and the second lifting vacuum suction platform sends out the product. The long and flexible FPC automatically completes the front and back side detections without personnel intervention in the middle, and the detection data is displayed in real time or uploaded to the MES system. The equipment can flexibly adapt to the detection process (such as detecting both sides, one side, full inspection, single inspection, online, offline, etc.), can not only be compatible with various specifications of flexible circuit board interfaces but also be simple, integrates image annotation, training, parameter adjustment, and self-inspection, does not require a large number of defective samples, can quickly supplement learning at any time, and the operator does not need programming experience and can get started quickly.

[0011] The utility model is mainly applied to the appearance detection of flexible printed circuit boards (FPCs), and can conduct full-coverage detection on defects and deficiencies such as nickel sheets of FPCs being under the aluminum bars, laser solder joints being offset, laser solder joints being unsoldered, heat riveting posts not being heat-riveted, aluminum palladium being installed reversely, and heat-conducting pads being missing. It uses deep learning to solve the problem of detecting the three-none defects (no rules, no quantification, no standards) in FPC appearance detection. Description of the Drawings:

[0012] The following details the utility model with the accompanying drawings:

[0013] Figure 1 is a three-dimensional schematic diagram of the utility model;

[0014] Figure 2 is a schematic diagram of the platform moving and lifting component of the utility model;

[0015] Figure 3 is a schematic diagram of the flipping component of the utility model. Specific Embodiments:

[0016] The following details the utility model in combination with the accompanying drawings and embodiments:

[0017] Figures 1 - 3 Shown is an embodiment of the utility model.

[0018] The appearance inspection machine applied to flexible circuit boards comprises a machine platform 1, on which are arranged mutually cooperating lifting vacuum suction platform 12, platform moving lifting component 13, photographing detection component 14, vacuum suction platform 5, flipping component 6, photographing detection component 27, lifting vacuum suction platform 28, platform moving lifting component 29; wherein, the workpiece is placed on the lifting vacuum suction platform 12, the platform moving lifting component 13 drives the lifting vacuum suction platform 2 to move and lift, the lifting vacuum suction platform 2 cooperates with the photographing detection component 14 to detect the front of the workpiece; the vacuum suction platform 5 is docked with the lifting vacuum suction platform 12 to receive the workpiece after the front side is photographed, the vacuum suction platform 5 is arranged on the flipping component 6 and driven by it to flip together with the workpiece so that the back side of the workpiece faces upward, the vacuum suction platform 5 cooperates with the photographing detection component 27 to detect the back side of the workpiece; the lifting vacuum suction platform 2 is docked with the vacuum suction platform to receive the workpiece after the back side is inspected, the lifting vacuum suction platform 28 is driven by the platform moving lifting component 29 to lift and move to deliver the inspected workpiece to the receiving position.

[0019] In a specific embodiment, the platform moving lifting assembly 3 includes a moving motor 31, a screw assembly 32 and a lifting cylinder 33 that cooperate with each other; the lifting vacuum suction platform 2 includes a platform bottom plate 21 and a platform upper plate 22; wherein the moving motor 31 is fixed to the machine 1, the moving motor 31 drives the screw assembly 32 to move, the screw assembly 32 cooperates with the platform bottom plate 21 and moves integrally therewith, the platform upper plate 22 is arranged above the platform bottom plate 11, the lifting cylinder 33 is arranged on the platform bottom plate 21, and the lifting cylinder 33 drives the platform upper plate 22 to rise and fall relative to the platform bottom plate 21. The structure of the platform moving lifting assembly 27 is the same as that of the platform moving lifting assembly 3, and will not be repeated here.

[0020] The photo detection component 4 includes an X-axis linear motor group 1 (not shown in the figure), a slide rail 42, and an X-axis camera 43 that cooperate with each other; wherein the slide rail 42 is fixed to the machine platform 1, the X-axis camera 43 is arranged on the slide rail 42, and the X-axis linear motor group 1 drives the X-axis camera 43 to move along the slide rail 42.

[0021] The photo detection component 27 includes an X-axis linear motor group 271, a slide rail 272, and an X-axis camera 273 that cooperate with each other; wherein the slide rail 272 is fixed to the machine platform 1, the X-axis camera 273 is arranged on the slide rail 272, and the X-axis linear motor group 271 drives the X-axis camera 273 to move along the slide rail 272.

[0022] The flipping assembly 6 includes a mutually cooperating flipping motor 61 and a flipping frame 62. Among them, the flipping motor 61 is installed on the machine table 1, and the flipping motor 61 drives the flipping frame 62 to rotate forward or backward. The vacuum suction platform 5 is installed on the flipping frame 62 and rotates integrally with it.

[0023] During operation, the workpiece is placed on the first lifting vacuum suction platform. After the first lifting vacuum suction platform is driven to the designated position by the first platform moving and lifting assembly, the X-axis linear motor of the first photographing and detecting assembly drives the first X photographing and detecting camera to start detecting the front side of the FPC. After completion, the X-axis photographing camera returns to its original position. The first lifting vacuum suction platform is again driven by the first platform moving and lifting assembly to directly below the 180-degree flipping mechanism. The first lifting vacuum suction platform is driven by the first platform moving and lifting assembly to automatically rise and coincide with the vacuum suction platform, and then the vacuum is cut off. The vacuum suction platform sucks the workpiece, and the first lifting vacuum suction platform returns to the starting position. After the 180-degree flipping mechanism adsorbs the product, it performs a 180-degree flip to turn the workpiece upside down. The X-axis linear motor of the second photographing and detecting assembly drives the second X photographing and detecting camera to start detecting the back side of the FPC. After completion, the X-axis photographing camera returns to its original position. The 180-degree flipping mechanism flips the vacuum suction platform face down again. The second lifting vacuum suction platform is driven by the second platform moving and lifting assembly to directly below. The second lifting vacuum suction platform automatically rises and coincides with the vacuum suction platform, then cuts off the vacuum and descends. The second lifting vacuum suction platform is driven by the second platform moving and lifting assembly to the material receiving position to complete the front and back side detection of one product.

[0024] The present utility model mainly solves the problems of the accuracy of the whole board detection and the adsorption and positioning of the FPC board. The first lifting vacuum suction platform, the 180-degree flipping mechanism, the vacuum suction platform, the second lifting vacuum suction platform, from loading to unloading, the FPC automatically flips the front and back sides and switches the vacuum adsorption on multiple planes. The whole board detection is based on the internationally leading AI algorithm, combined with the pain points of the industrial scenario landing, self-developed underlying model, the detection rate approaches 100%, the missed detection rate approaches 0%, and the through rate reaches more than 80%. The first lifting vacuum suction platform and the vacuum suction platform can flatly adsorb the FPC board during operation, which ensures that the FPC board is in a flat state before detection, so as to better provide the detection environment. Calculated by PCS for the detected products, the missed detection rate can reach 500 PPM, the false alarm rate can be lower than 1.0%, the equipment is mature and stable, and the downtime rate is very low.

[0025] The above description shows and describes the preferred embodiments of the present utility model. As mentioned above, it should be understood that the present utility model is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the inventive concept described herein through the above teachings or the technology or knowledge in related fields. And the changes and variations made by those skilled in the art without departing from the spirit and scope of the present utility model should all be within the protection scope of the appended claims of the present utility model.

Claims

1. Appearance inspection machine for flexible circuit boards, characterized by: The machine comprises a lifting vacuum suction platform 1, a platform moving lifting component 1, a photo detection component 1, a vacuum suction platform, a flip component, a photo detection component 2, a lifting vacuum suction platform 2, and a platform moving lifting component 2 which cooperate with each other; wherein, the workpiece is placed on the lifting vacuum suction platform 1, the platform moving lifting component 1 drives the lifting vacuum suction platform 1 to move and lift, and the lifting vacuum suction platform 1 cooperates with the photo detection component 1 to detect the front side of the workpiece; the vacuum suction platform is docked with the lifting vacuum suction platform 1 to receive the workpiece after the front side is photographed, the vacuum suction platform is arranged on the flip component and driven by it to flip together with the workpiece so that the back side of the workpiece faces upward, and the vacuum suction platform cooperates with the photo detection component 2 to detect the back side of the workpiece; the lifting vacuum suction platform 2 is docked with the vacuum suction platform to receive the workpiece after the back side is detected, and the lifting vacuum suction platform 2 is driven by the platform moving lifting component 2 to lift and move to send the detected workpiece to the receiving position.

2. The appearance inspection machine for flexible printed circuit board according to claim 1, characterized in that: The platform moving lifting component includes a moving motor, a screw assembly and a lifting cylinder that cooperate with each other; the lifting vacuum suction platform includes a platform bottom plate and a platform upper plate; wherein, the moving motor is fixed to the machine platform, the moving motor drives the screw assembly to move, the screw assembly cooperates with the platform bottom plate and moves integrally with it, the platform upper plate is arranged above the platform bottom plate, the lifting cylinder is arranged on the platform bottom plate, and the lifting cylinder drives the platform upper plate to rise and fall relative to the platform bottom plate.

3. The appearance inspection machine for flexible printed circuit board as claimed in claim 2, characterized in that: The photo detection component includes an X-axis linear motor group, a slide rail, and an X-axis camera that cooperate with each other; wherein the slide rail is fixed to the machine platform, the X-axis camera is set on the slide rail, and the X-axis linear motor group drives the X-axis camera to move along the slide rail.

4. The appearance inspection machine for flexible printed circuit board according to claim 2, characterized in that: The second photo detection component includes an X-axis linear motor group 2, a slide rail 2, and an X-axis camera 2 that cooperate with each other; wherein the slide rail 2 is fixed to the machine platform, the X-axis camera 2 is set on the slide rail 2, and the X-axis linear motor group 2 drives the X-axis camera 2 to move along the slide rail 2.

5. The appearance inspection machine for flexible printed circuit boards according to claim 3 or 4, characterized in that: The flip assembly includes a flip motor and a flip frame that cooperate with each other; wherein the flip motor is installed on the machine platform, the flip motor drives the flip frame to rotate forward or reverse, and the vacuum suction platform is installed on the flip frame and rotates therewith.

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