Visual inspection equipment for micro component

Abstract

The utility model discloses a visual inspection device for micro components, which comprises a frame, a bedplate, an adjusting frame, a camera, a tray, a touch screen and a display, the bedplate is fixed on the frame, the adjusting frame and the touch screen are fixed on the bedplate, the camera is fixed on the adjusting frame, the display is fixed on the frame, the bedplate is provided with a plurality of protrusions to form a fixing groove for fixing the tray, and the tray is fixed on the fixing groove. The tray corresponds to the fixing groove, the adjusting frame is used for driving the camera to move in the horizontal direction and the vertical direction, micro components are placed in the tray, then the camera is driven by the adjusting frame to take pictures, then the total number of components and the number of unqualified components in each visual area are detected in sequence, and photographing detection is carried out in different areas. Compared with a traditional detection mode, the efficiency is higher, errors are not prone to occurring, and it is guaranteed that delivery of products meets the requirements.

Description

Technical Field

[0001] This utility model relates to the field of visual inspection technology, specifically a visual inspection device for micro-components. Background Technology

[0002] With the development of the semiconductor industry, there is a growing demand for more precise and miniaturized equipment. This also requires the size of each electrical component to become smaller and smaller. Currently, in some precision electrical devices with relatively small dimensions, each component has reached the millimeter level. The production of these components also places new demands on existing equipment.

[0003] Generally, after these micro-components are manufactured, they need to be sampled and inspected before final packaging. This involves selecting a certain number of components and testing them one by one to determine the pass rate of the sampled products. Only when the pass rate meets the standard will the products be shipped out for sale. Traditional inspection methods require the use of magnifying glasses due to the small size of the products, which is inefficient. Later, high-magnification cameras were used for inspection, but the efficiency of inspecting each product individually is still low. Therefore, it is necessary to further improve and optimize the existing technology. Utility Model Content

[0004] (I) Technical Solution

[0005] To address the aforementioned technical problems, this utility model provides a visual inspection device for micro-components.

[0006] The specific technical solution is as follows:

[0007] A visual inspection device for micro-components includes a frame, a platform, an adjustment frame, a camera, a tray, a touch screen, and a display. The platform is fixed to the frame, the adjustment frame and the touch screen are fixed to the platform, the camera is fixed to the adjustment frame, and the display is fixed to the frame. The platform has several protrusions forming fixing grooves for fixing the tray, and the tray corresponds to the fixing grooves. The adjustment frame is used to drive the camera to move in the horizontal and vertical directions.

[0008] Furthermore, the adjustment frame includes columns, a first linear module, a second linear module, and a lead screw module. There are four columns fixed to the platform. There are two first linear modules fixed to the upper part of the columns. The two first linear modules are arranged in parallel and driven by the same motor and drive rod. The two ends of the second linear module are fixed to the sliders of the two first linear modules. The movement direction of the sliders of the first linear modules is perpendicular to the movement direction of the sliders of the second linear modules. The lead screw module is fixed to the slider of the second linear module and is vertically fixed. The camera is fixed to the lead screw slider of the lead screw module, and a motor for driving the lead screw rotation is provided on the upper part of the lead screw module.

[0009] Furthermore, a light source is also fixedly connected to the lead screw slider of the lead screw module via a connecting plate.

[0010] Furthermore, photoelectric switches and limit blocks that cooperate with each other are fixed on the first linear module, the second linear module, and the lead screw module.

[0011] Furthermore, the number of protrusions is three, and the three protrusions form fixing grooves corresponding to the three sides of the tray. The upper part of the tray is provided with a recess for placing components, and the side of the tray is provided with a handle.

[0012] (ii) Beneficial effects

[0013] Compared with the prior art, the technical solution proposed in this utility model places the micro-components in a tray, and then uses an adjustment frame to drive the camera to take pictures. Then, the total number of components and the number of defective components in each viewing area are detected in turn. The detection is carried out by taking pictures in sections. On the one hand, it is more efficient than the traditional detection method, and on the other hand, it is less prone to errors, ensuring that the products meet the requirements when they leave the factory. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 A top view showing the installation of each component on the adjustment frame.

[0017] Figure 3 The right view shows the installation of each component on the adjustment frame. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. The described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0019] In existing technologies, after the production of micro-components is completed, a batch of products needs to be sampled and inspected before final packaging. This involves selecting a certain number of components and testing them one by one to determine the pass rate of the sampled products. Only when the pass rate meets the standard will the products be shipped out for sale. Traditional inspection methods require the use of magnifying glasses due to the small size of the products, which is inefficient. Later, high-magnification cameras were used for inspection, but the efficiency of inspecting each product individually is still low. Therefore, it is necessary to further improve and optimize the existing technologies.

[0020] To address the problems existing in the relevant prior art, this utility model proposes a visual inspection device for micro-components. The principle and structure of this utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0021] Please see Figures 1 to 3 This utility model proposes a visual inspection device for micro-components, including a frame 1, a platform 2, an adjustment frame 3, a camera 4, a tray 5, a touch screen 6, and a display 7. The platform 2 is fixed on the frame 1, the adjustment frame 3 and the touch screen 6 are fixed on the platform 2, the camera 4 is fixed on the adjustment frame 3, and the display 7 is fixed on the frame 1. The platform 2 is provided with several protrusions 8 forming fixing grooves for fixing the tray 5. The tray 5 corresponds to the fixing grooves. The adjustment frame 3 is used to drive the camera 4 to move in the horizontal and vertical directions.

[0022] In practical applications, taking surface-mount components as an example, miniature surface-mount devices are typically a few millimeters in length and width, with silver paste applied to one side as leads. However, due to their small size, some screen printing holes may become clogged during silver paste screen printing, resulting in the corresponding surface-mount device not being printed with silver paste during processing. In this case, it is a defective product. When inspecting these products, a certain number of surface-mount devices need to be sampled from each batch, and their pass rate needs to be tested. Generally, only those with a pass rate exceeding a certain threshold can be shipped for sale. During testing, a certain number of surface-mount devices are first poured into tray 5, and then tray 5 is shaken to make the devices spread evenly within the tray. Then, tray 5 is placed in the groove formed by protrusion 8. The height of the camera relative to the tray is then adjusted using the touch screen control to ensure camera focus and simultaneously determine the corresponding shooting angle. To ensure clear images, high-magnification cameras are often used, but their limited field of view necessitates multiple adjustments to the camera position for each shot. The average of multiple images can be calculated by analyzing the number of patches and defective products in each individual image. Alternatively, existing software can be used to stitch together multiple images to create a view of the entire tray, thus obtaining the total number of components and defective products within the image and calculating the pass rate. The pass rate obtained using these methods is more accurate than traditional inspection methods. Furthermore, image-based inspection is more efficient than traditional single-item inspection. With the increasing prevalence of AI learning models, which can automatically identify the number of patches and defective patches in images, the application prospects of these solutions are even brighter.

[0023] Specifically, the adjustment frame 3 includes columns 3a, a first linear module 3b, a second linear module 3c, and a lead screw module 3d. There are four columns 3a fixed to the platform 2. There are two first linear modules 3b. The first linear module 3a is an existing, mature module, including a slider and a body. The slider can slide freely along the length of the body under the drive of the drive motor. The two first linear modules 3b are fixed to the upper part of the columns 3a and are arranged in parallel. The two first linear modules 3b are driven by the same motor and drive rod, ensuring that the sliders of the two first linear modules 3b move synchronously. The two ends of the second linear module 3c are fixed to the sliders of the two first linear modules 3b. The second linear module 3c is also an existing module structure, including a slider and a body. Driven by the drive motor, it can slide freely along the length of the body. A corresponding drive motor is provided on one side of the second linear module 3c. The moving direction of the slider of the first linear module 3b is perpendicular to the moving direction of the slider of the second linear module 3c. The lead screw module 3d is fixed on the slider of the second linear module 3c and is vertically fixed. The lead screw module 3d is an existing module, specifically including a lead screw, a lead screw slider and the body. The lead screw slider can move freely along the length of the lead screw. The camera 4 is fixed on the lead screw slider of the lead screw module 3d, and a motor for driving the lead screw to rotate is provided on the upper part of the lead screw module 3d. In the above structure, the first linear module and the second linear module drive the camera to move freely in the horizontal direction, and the lead screw module 3d drives the camera to move in the vertical direction.

[0024] Meanwhile, a light source 9 is also fixedly connected to the lead screw slider of the 3D lead screw module via a connecting plate. The light source 9 is used to provide supplementary lighting for taking pictures to ensure that the pictures are clear.

[0025] Photoelectric switches 10 and limit blocks 11 are fixed on the first linear module 3b, the second linear module 3c, and the lead screw module 3d. The photoelectric switches are existing products, including a sensing element and a switch assembly. The sensing element is fixed on the corresponding slider, and the switch assembly is fixed on the body. When the slider moves along the body, it drives the sensing element to the position of the switch assembly, at which point the circuit is broken. At the same time, the limit block is fixed on the body of the corresponding linear module, thus limiting the sliding stroke of the slider. This effectively ensures that the light source installed at the bottom collides with the column when moving horizontally, and also prevents the light source from colliding with the tray or platform when moving up and down.

[0026] Specifically, there are three protrusions 8, which form fixing grooves corresponding to the three sides of the tray 5. The upper part of the tray 5 is provided with a groove for placing components, and the side of the tray 5 is provided with a handle.

[0027] Specifically, when some micro-components require testing from both sides, the platform and tray are made of transparent material, and the aforementioned adjustment frame 3 and camera are mirrored on both sides of the platform to achieve dual-sided testing. This is to deal with some components that require testing from both sides, and the principle is the same as the single-sided testing mentioned above.

[0028] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A visual inspection device for micro-components, characterized in that: The device includes a frame (1), a platform (2), an adjustment frame (3), a camera (4), a tray (5), a touch screen (6), and a display (7). The platform (2) is fixed to the frame (1), the adjustment frame (3) and the touch screen (6) are fixed to the platform (2), the camera (4) is fixed to the adjustment frame (3), and the display (7) is fixed to the frame (1). The platform (2) has several protrusions (8) forming a fixing groove for fixing the tray (5). The tray (5) corresponds to the fixing groove. The adjustment frame (3) is used to drive the camera (4) to move in the horizontal and vertical directions.

2. The micro-component visual inspection device according to claim 1, characterized in that: The adjustment frame (3) includes a column (3a), a first linear module (3b), a second linear module (3c), and a lead screw module (3d). There are four columns (3a) and they are fixed on the platform (2). There are two first linear modules (3b) and they are fixed on the upper part of the column (3a). The two first linear modules (3b) are arranged in parallel and driven by the same motor and drive rod. The two ends of the second linear module (3c) are fixed on the sliders of the two first linear modules (3b). The moving direction of the sliders of the first linear modules (3b) is perpendicular to the moving direction of the sliders of the second linear modules (3c). The lead screw module (3d) is fixed on the slider of the second linear module (3c) and is vertically fixed. The camera (4) is fixed on the lead screw slider of the lead screw module (3d), and the upper part of the lead screw module (3d) is provided with a motor for driving the lead screw to rotate.

3. The micro-component visual inspection device according to claim 2, characterized in that: A light source (9) is also fixedly connected to the lead screw slider of the lead screw module (3d) via a connecting plate.

4. The micro-component visual inspection device according to claim 2, characterized in that: A photoelectric switch (10) and a limit block (11) are fixed on the first linear module (3b), the second linear module (3c), and the lead screw module (3d).

5. A visual inspection device for micro-components according to claim 1, characterized in that: The number of protrusions (8) is three, and the three protrusions (8) form a fixing groove corresponding to the three sides of the tray (5). The upper part of the tray (5) is provided with a recess for placing components, and the side of the tray (5) is provided with a handle.

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