A linear inspection mechanism and appearance inspection equipment
By designing a linear detection mechanism, the automatic acquisition of images of the upper and lower surfaces of the product is realized, solving the problems of high equipment cost, large footprint and low detection accuracy caused by manual flipping, and improving detection efficiency and imaging quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 合肥九川智能装备有限公司
- Filing Date
- 2025-08-25
- Publication Date
- 2026-07-31
AI Technical Summary
In the existing technology, when it is necessary to inspect the upper and lower surfaces of a product, it is usually necessary to manually flip it or use flipping equipment, which results in high equipment cost, large footprint, reduced detection accuracy and possible contamination of the product surface.
A linear detection mechanism is adopted, in which the product is transported along a straight path by a conveying component and a translational transport component. The upper and lower surface images of the product are acquired by image acquisition components from above and below, respectively. The product surface is fixed by a bearing component with the same structure, ensuring accurate positioning and eliminating the need for flipping.
It improves detection efficiency, eliminates the risk of surface contamination caused by human intervention, ensures the accuracy of detection data and the clarity of imaging, and reduces detection errors.
Smart Images
Figure CN224581432U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of testing equipment, specifically to a linear testing mechanism and appearance testing equipment. Background Technology
[0002] During the production process of products (such as PCB boards and FPC flexible boards), defects are usually generated. Therefore, testing equipment is generally used to detect defects in products.
[0003] Currently, product testing typically only checks one side of a product. For products that require testing both the top and bottom sides, manual flipping or flipping equipment is often necessary. This method not only increases equipment costs and floor space but also reduces testing accuracy due to positioning errors and human intervention during the flipping process. Furthermore, it may affect the surface quality of the product due to contact contamination. Therefore, we propose a linear testing mechanism and appearance inspection equipment. Utility Model Content
[0004] The purpose of this utility model is to provide a linear inspection mechanism and appearance inspection equipment, which solves the technical problem that existing products that need to be inspected on both the top and bottom surfaces often require manual flipping or the assistance of flipping equipment. This method not only increases the equipment cost and floor space, but also easily leads to a decrease in inspection accuracy due to positioning errors and manual intervention during the flipping process, and may affect the surface quality of the product due to contact contamination.
[0005] This utility model achieves the above objectives through the following technical solutions: Linear testing mechanisms include: A conveying assembly for translating and conveying a product to be inspected along a first straight path includes a first conveying section and a first carrying section, wherein the first carrying section provides an adsorption plane for adsorbing and fixing the lower surface of the product to be inspected; Image acquisition component one is located above the first straight path and is used to acquire images of the upper surface of the product to be inspected; A translational conveying assembly for translating and conveying a product to be inspected along a second straight path includes a second conveying section and a second bearing section, wherein the second bearing section provides an adsorption plane for adsorbing and fixing the upper surface of the product to be inspected; Image acquisition component two is located below the second straight path and is used to acquire images of the lower surface of the product to be inspected; Wherein, the first straight path and the second straight path are parallel to each other, the output end of the first conveying part corresponds to the input end of the second conveying part, and the adsorption planes of the first bearing part and the second bearing part are parallel to each other.
[0006] A further improvement is that the image acquisition component one and the image acquisition component two have the same structure; The image acquisition component includes a connecting bracket structure, an imaging device mounted on the connecting bracket structure for acquiring product images, and an illumination device mounted on the connecting bracket structure for providing illumination to the imaging device.
[0007] A further improvement is that the first and second support parts have the same structure; The first support unit includes a support plate, a contact plate disposed on one side of the support plate for contacting the product to be inspected, several sets of adsorption holes opened on the contact plate, an adsorption groove opened on one side of the support plate and communicating with the adsorption holes, a mounting plate disposed on the other side of the support plate, a receiving groove opened on one side of the mounting plate and corresponding to the adsorption groove, a backlight plate disposed in the receiving groove for providing a light source, and a connecting plate disposed on the side of the mounting plate away from the support plate. The adsorption groove is connected to a negative pressure air source, and the light-emitting area of the backlight plate covers all the adsorption holes.
[0008] A further improvement is that both the support plate and the contact plate are made of light-transmitting material.
[0009] A further improvement is that the second conveying section and the second bearing section are connected by a connecting bracket section.
[0010] An appearance inspection device includes a frame, a loading assembly, a loading and conveying assembly, an unloading assembly, and a linear inspection mechanism as described above, all mounted on the frame. The feeding component is used to feed the product to be inspected to the feeding and conveying component; The loading and handling assembly is used to transport the products to be inspected on the loading assembly to the linear testing mechanism for testing; The feeding assembly is used to receive the products inspected by the linear inspection mechanism and to convey the products out.
[0011] The beneficial effects of this utility model are as follows: Through the coordinated operation of the conveying component, image acquisition component one, unloading and handling component, and image acquisition component two, the conveying component and the translational handling component enable the image acquisition components one and two to sequentially acquire images of the upper and lower surfaces of the product under inspection during the translational process, eliminating the need to flip the product under inspection, significantly improving inspection efficiency, and eliminating the risk of surface contamination caused by manual intervention, ensuring the accuracy of inspection data. Furthermore, the output end of the first conveying unit corresponds to the input end of the second conveying unit, and the adsorption planes of the first and second bearing units are parallel to each other, achieving precise positioning and ensuring that the second bearing unit can accurately pick up the product from the first bearing unit and stably transfer the product under inspection. The first and second bearing units respectively adsorb and fix the upper and lower surfaces of the product under inspection, preventing displacement of the product under inspection during translation and reducing inspection errors. On the other hand, it ensures that the surface of the product under inspection that is not adsorbed is fully exposed, improving the quality of image acquisition. It also provides a light source for the product under inspection, making the image clarity of the product under inspection higher and the imaging effect better. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the linear detection mechanism of this utility model; Figure 2 For the present utility model Figure 1 Enlarged view of structure A in the image; Figure 3 This is a schematic diagram of the appearance inspection equipment of this utility model; Figure 4 This is a schematic diagram of the first supporting part of this utility model; Figure 5 For the present utility model Figure 4 A schematic diagram of a local structure.
[0013] In the diagram: 100, conveying assembly; 101, first conveying section; 102, first bearing section; 1021, bearing plate; 1022, contact plate; 1023, adsorption hole; 1024, mounting plate; 1025, connecting plate; 1026, adsorption tank; 200, image acquisition assembly one; 201, connecting bracket structure; 202, imaging equipment; 203, lighting equipment; 300, image acquisition assembly two; 400, translation and handling assembly; 401, second conveying section; 402, connecting bracket section; 403, second bearing section; 500, frame; 600, loading assembly; 700, loading and handling assembly; 800, unloading assembly. Detailed Implementation
[0014] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.
[0015] Example 1 Please see the appendix Figure 1-3 This linear inspection mechanism is suitable for appearance inspection equipment, which is used to perform defect detection on products to be inspected (such as PCB boards, FPC flexible boards, etc.). It is widely used in this field and will not be described in detail here. Linear testing mechanisms include: The conveying assembly 100 is used to convey the product to be inspected (such as PCB board, FPC flexible board, etc.) along a first straight path. It includes a first conveying part 101 and a first carrying part 102. The first conveying part 101 includes a conveyor belt structure or a conveyor chain structure, etc. The first carrying part 102 provides an adsorption plane for adsorbing and fixing the lower surface of the product to be inspected. This not only realizes the stable fixing of the product to be inspected during the inspection process, but also, if the product to be inspected is a relatively soft product such as FPC flexible board, this method can effectively flatten the warping deformation of the relatively soft product such as FPC flexible board, prevent image blurring, and reduce inspection error. Image acquisition component 200 is positioned above the first straight path and is used to acquire images of the upper surface of the product to be inspected. The translational transport assembly 400 is used to translate and transport the product to be inspected along a second straight path. It includes a second transport section 401 and a second carrier section 403. The second transport section 401 includes a conveyor belt structure or a conveyor chain structure, etc. The second carrier section 403 provides an adsorption plane for adsorbing and fixing the upper surface of the product to be inspected, so as to achieve stable fixing of the product to be inspected during the inspection process. Since the second carrier section 403 only contacts the upper surface of the product to be inspected and the first carrier section 102 only contacts the lower surface of the product to be inspected, it ensures that the surface of the product to be inspected that is not in contact with the first carrier section 102 or the second carrier section 403 is completely exposed, which provides the necessary conditions for the image acquisition assembly 200 and the image acquisition assembly 300 to obtain a complete and clear image of the lower surface. Image acquisition component 2 300 is located below the second straight path and is used to acquire images of the lower surface of the product to be inspected; In this system, the first straight path and the second straight path are parallel to each other. The output end of the first conveying part 101 corresponds to the input end of the second conveying part 401. The adsorption planes of the first bearing part 102 and the second bearing part 403 are parallel to each other. When the second bearing part 403 is at the input end of the two conveying parts, it corresponds to the first bearing part 102 at the output end of the first conveying part 101. This achieves precise positioning and ensures that no positional shift occurs during the transfer of the product from the first bearing part 102 to the second bearing part 403. This ensures the stability of the transfer of the product to be inspected and avoids image acquisition errors caused by positional deviations, thereby ensuring the precise correspondence of the upper and lower surface image acquisitions and the reliability of the detection results. This method uses the conveying component 100 and the translation and handling component 400 to enable the product to be inspected to have its upper and lower surfaces imaged sequentially by the image acquisition component 200 and the image acquisition component 300 during the translation process. This eliminates the need to flip the product to be inspected, significantly improving the inspection efficiency, while also eliminating the risk of surface contamination caused by human intervention and ensuring the accuracy of the inspection data.
[0016] Preferably, in this embodiment, the second conveying part 401 and the second bearing part 403 are connected by a connecting bracket part 402. The connecting bracket part 402 can preferably be a telescopic bracket (such as an electric telescopic bracket or a hydraulic telescopic bracket, etc.) that is widely used in the art. It will not be described in detail here, so as to flexibly adjust the distance between the first bearing part 102 and the second bearing part 403 according to the product to be inspected, thereby improving the flexibility of use.
[0017] An appearance inspection device includes a frame 500, a loading assembly 600 disposed on the frame 500, a loading and conveying assembly 700, a unloading assembly 800, and a linear inspection mechanism as described above. Among them, the feeding component 600 is used to feed the product to be inspected to the feeding and handling component 700; The loading and handling assembly 700 is used to transport the products to be inspected on the loading assembly 600 to the linear inspection mechanism for inspection (specifically, on the first conveyor 101). The feeding assembly 800 is used to receive the products detected by the linear detection mechanism (released by the second bearing part 403) and convey the products out. It should be noted that the feeding assembly 600, the feeding and conveying assembly 700, and the unloading assembly 800 are all conventional structures in the field and will not be described in detail here; the conveying assembly 100, the image acquisition assembly 200, the translation and conveying assembly 400, and the image acquisition assembly 300 in the linear detection mechanism are all mounted on the frame 500.
[0018] Example 2 Please see the appendix Figure 1Based on Embodiment 1, the image acquisition component 200 and the image acquisition component 300 in this embodiment have the same structure. It should be noted that the image acquisition component 200 and the image acquisition component 300 are arranged symmetrically. The image acquisition component 200 includes a connecting bracket structure 201, an imaging device 202 (which can be a CCD camera, forming a fan-shaped scanning surface within the lens scanning and imaging range during image acquisition, corresponding to the adsorption plane) mounted on the connecting bracket structure 201 for acquiring product images, and an illumination device 203 (such as an LED lighting device) mounted on the connecting bracket structure 201 for providing illumination to the imaging device 202. The illumination device 203 forms a rectangular illumination area, and the elongated shooting field of view formed by the fan-shaped scanning surface on the plane can be located within the illumination area, so as to illuminate the area to be photographed through the illumination area, achieving shadowless and uniform illumination, and further improving the imaging effect of the image acquisition component 200 and the image acquisition component 300. The connecting bracket structure 201 can be an adjustable bracket widely used in the art. The adjustable bracket can adjust the angle and / or height of the imaging device 202 and / or the illumination device 203 relative to the adsorption plane, ensuring that the best imaging effect can be obtained under different product heights and surface characteristics. Of course, it is not limited to an adjustable bracket; a fixed bracket or the like can also be used.
[0019] Example 3 Please see the appendix Figure 4-5 Based on Embodiment 1, the first support portion 102 and the second support portion 403 in this embodiment have the same structure; The first support unit 102 includes a support plate 1021, a contact plate 1022 (with the adsorption plane on one side of the support plate 1022, and the contact plate 1022 and the support plate 1021 can be detachably connected by screws), several sets of adsorption holes 1023 (with hole diameters of, for example, φ1.0-2.0mm) on the contact plate 1022, an adsorption groove 1026 (within one side of the support plate 1021 and communicating with the adsorption holes 1023), a mounting plate 1024 (within the support plate 1021, and the mounting plate 1024 can be detachably connected by screws) on the other side of the support plate 1021, and a receiving groove (within one side of the mounting plate 1024 and corresponding to the adsorption groove 1026) corresponding to the adsorption groove 1026. (Not shown in the figure) A backlight plate (not shown in the figure) is provided in the receiving groove to provide a light source, and a connecting plate 1025 is provided on the side of the mounting plate 1024 away from the carrier plate 1021. The connecting plate 1025 can be connected to the first conveying part 101 or the second conveying part 401. The adsorption groove 1026 is connected to a negative pressure air source (such as a vacuum pump, negative pressure fan, etc.) so that a negative pressure adsorption force is generated at the adsorption hole 1023 to adsorb the product to be inspected. The light-emitting area of the backlight plate covers all adsorption holes 1023, effectively eliminating or blurring the shadow interference of structures such as adsorption holes 1023 in the imaging, improving the imaging effect, and further improving the detection accuracy. The carrier plate 1021 and the contact plate 1022 are both made of light-transmitting material (preferably acrylic plate). By adsorbing and fixing the product to be inspected through the first bearing part 102 and the second bearing part 403, the product can be stably moved and inspected, while also providing a light source for the product, making the imaging clarity of the product to be inspected higher and the imaging effect better, and also improving the accuracy and reliability of appearance defect detection. Preferably, the mounting plate 1024 in this embodiment has heat dissipation holes on its side wall that communicate with the receiving groove, so as to dissipate the heat generated by the backlight panel in the receiving groove and ensure the stability of the backlight panel in use. Preferably, the accommodating groove of this embodiment is provided with a diffuser plate (not shown in the figure) at the groove opening. The diffuser plate is used to homogenize the light emitted by the backlight panel and improve the light uniformity.
[0020] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.
Claims
1. A linear detection mechanism, characterized by, include: The conveying assembly (100) is used to convey the product to be inspected along a first straight path, including a first conveying part (101) and a first carrying part (102), wherein the first carrying part (102) provides an adsorption plane for adsorbing and fixing the lower surface of the product to be inspected; Image acquisition component 1 (200) is located above the first straight path and is used to acquire images of the upper surface of the product to be inspected; A translational conveying assembly (400) for translating and conveying a product to be inspected along a second straight path includes a second conveying part (401) and a second bearing part (403), wherein the second bearing part (403) provides an adsorption plane for adsorbing and fixing the upper surface of the product to be inspected; Image acquisition component 2 (300) is located below the second straight path and is used to acquire images of the lower surface of the product to be inspected; The first straight path and the second straight path are parallel to each other, the output end of the first conveying part (101) corresponds to the input end of the second conveying part (401), and the adsorption planes of the first bearing part (102) and the second bearing part (403) are parallel to each other.
2. The linear detection mechanism according to claim 1, wherein The image acquisition component one (200) and the image acquisition component two (300) have the same structure; The image acquisition component (200) includes a connecting bracket structure (201), an imaging device (202) disposed on the connecting bracket structure (201) for acquiring product images, and an illumination device (203) disposed on the connecting bracket structure (201) for providing illumination to the imaging device (202).
3. The linear detection mechanism according to claim 2, wherein The first support part (102) and the second support part (403) have the same structure; The first support part (102) includes a support plate (1021), a contact plate (1022) disposed on one side of the support plate (1021) for contacting the product to be inspected, a plurality of adsorption holes (1023) opened on the contact plate (1022), an adsorption groove (1026) opened on one side of the support plate (1021) and communicating with the adsorption holes (1023), a mounting plate (1024) disposed on the other side of the support plate (1021), a receiving groove opened on one side of the mounting plate (1024) and corresponding to the adsorption groove (1026), a backlight plate disposed in the receiving groove for providing a light source, and a connecting plate (1025) disposed on the side of the mounting plate (1024) away from the support plate (1021). The adsorption groove (1026) is connected to a negative pressure air source, and the light-emitting area of the backlight plate covers all the adsorption holes (1023).
4. The linear detection mechanism according to claim 3, wherein Both the support plate (1021) and the contact plate (1022) are made of light-transmitting material.
5. The linear detection mechanism according to claim 1, wherein The second conveying part (401) and the second bearing part (403) are connected by a connecting bracket part (402).
6. An appearance inspection apparatus characterized by comprising: It includes a frame (500), a loading assembly (600) disposed on the frame (500), a loading and conveying assembly (700), a unloading assembly (800), and a linear detection mechanism as described in any one of claims 1-5; The loading component (600) is used to load the product to be inspected onto the loading and conveying component (700); The feeding and carrying assembly (700) is used to carry the products to be inspected on the feeding assembly (600) to the linear inspection mechanism for inspection; The discharging assembly (800) is used to receive the products inspected by the linear inspection mechanism and discharge the products.