Sucking jig, detection device and carrying device

Abstract

The utility model discloses a suction jig, and discloses a detection device and a carrying device with the suction jig, and the suction jig comprises a suction head which is provided with a suction part, the suction part is used for sucking an optical filter, and the suction part is provided with a containing groove; the background piece is arranged in the containing groove, the background piece is provided with a background face, the surface area of the background face is larger than that of the light sensing area of the light filter, and when the light filter is sucked, the background face is opposite to the light filter so as to cover the light sensing area of the light filter. The suction head can suck the optical filter and move the optical filter to the foreign matter inspection position and the carrying position, and the background is used as the inspection background of the optical filter, so that the foreign matter detection rate is increased.

Description

Technical Field

[0001] This utility model relates to the technical field of detection and mounting, and in particular to a suction fixture, a detection device, and a mounting device. Background Technology

[0002] Some mobile phone cameras are mainly assembled from substrates, chips, filters, lenses, PCBs, etc. The function of the filter is to block infrared light. Since CMOS cannot sense infrared light that is imperceptible to the human eye, filters are used to block infrared light to prevent interference with imaging.

[0003] Currently, in the camera manufacturing process, after the flip-chip soldering is completed on the substrate, the filter is installed. The filter is only inspected by the supplier upon arrival. After the film is removed from the filter at the machine, the machine picks up the filter and directly installs it. At this time, after transportation, storage, handling and film removal, the filter surface may have foreign objects adhering to it, especially the lower surface of the filter. Before the filter is installed, the lower surface of the filter needs to be inspected to reduce the occurrence of camera defects.

[0004] In the prior art, a method for attaching filters that can satisfy dust detection is disclosed, patent number CN115753790A, which includes a filter dust inspection step. The filter dust inspection step is as follows: if the filter meets the set conditions, the filter attaching operation is carried out; if it does not meet the set conditions, the filter is discarded.

[0005] Specifically, the working principle and method of filter dust inspection are as follows: The pin system is set to a black background. Setting a black background is to remove the influence of reflection. A black background allows the photosensitive area to be in a convenient inspection environment, resulting in a more accurate image at the judgment stage. Next, using the principle of image grayscale, the image content is grayscaled. After analyzing the commonalities of the samples, it is found that dust appears white under a black background and equipment lighting. Based on this, judgment conditions are set. If the number of white dust pixels exceeds the set range, the filter that fails the inspection is discarded and recorded in the equipment information.

[0006] In this inspection method, the top of the ejector system has an ejector cap with a black background. A light source is positioned directly above the ejector cap. A filter carrier is positioned between the light source and the ejector system, and the filter is placed on the carrier. A top camera is positioned directly above the light source, and the image is acquired by the top camera.

[0007] However, existing inspection methods require manual placement or the use of transfer equipment to place the filter on the carrier plate. After the inspection is completed and the filter meets the requirements, it is then transferred from the carrier plate to the mounting position. In other words, the filter needs to be picked up and put down during inspection, which makes the inspection efficiency low. Utility Model Content

[0008] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a suction fixture capable of suctioning a filter, moving the filter to a foreign object inspection position and a mounting position, and utilizing the background as the inspection background for the filter to improve the detection rate of foreign objects.

[0009] This utility model also proposes a detection device having the above-mentioned suction fixture.

[0010] This utility model also proposes a mounting device having the above-mentioned suction fixture.

[0011] A suction fixture according to a first aspect of the present invention includes: a suction head having an adsorption portion for suctioning a filter, the adsorption portion being provided with a receiving groove; and a background member disposed in the receiving groove, the background member having a background surface, the surface area of ​​the background surface being larger than the surface area of ​​the photosensitive area of ​​the filter, wherein when suctioning the filter, the background surface is opposite to the filter to cover the photosensitive area of ​​the filter.

[0012] A suction fixture according to an embodiment of the present utility model has at least the following beneficial effects:

[0013] 1. This utility model, by setting up a suction head, can use a moving component to drive the suction head to move, and use the suction part to pick up the filter and move the filter to the inspection position. If the filter is found to contain foreign objects, it is discarded. If no abnormality is detected, the suction head moves to above the camera's installation position, and the suction head installs the filter in the corresponding installation position of the camera according to the process, completing the filter mounting. This greatly reduces the number of filters with foreign objects inside the camera, reducing the occurrence of camera defects. Furthermore, during inspection, there is no need to pick up and put down the filter, improving inspection efficiency and not affecting the efficiency of UPH and production.

[0014] 2. This utility model, by setting a background component, ensures that when the suction head picks up the filter, the background component and the filter are opposite each other, making the background surface the inspection background for the filter. During inspection, the visual inspection equipment can inspect the entire photosensitive area of ​​the filter. Furthermore, through binarization processing, foreign objects and the background surface show a clear color difference. Foreign object detection is performed using the gray values ​​of different areas of the image. If the gray value of the detected foreign object is greater than the set gray value threshold, it is displayed as a defect, thereby improving the foreign object detection rate of the photosensitive area of ​​the filter and reducing the occurrence of foreign object defects.

[0015] According to some embodiments of this utility model, the background surface is black.

[0016] The advantage is that the background surface of this utility model is black, which makes the foreign object and the background surface clearly distinguishable, thus improving the recognition effect of the visual inspection equipment and increasing the foreign object detection rate.

[0017] According to some embodiments of the present invention, the adsorption part has a flange, and the raised surface of the flange is used to abut against the surface of the filter.

[0018] The advantages of this invention are: the flange has a small width, which makes the processed raised surface flatter and the raised surface in closer contact with the filter, reducing vacuum leakage and ensuring that the suction head can stably pick up the filter.

[0019] According to some embodiments of the present invention, the raised surface of the flange is used to abut against the non-photosensitive area of ​​the filter.

[0020] The advantage is that the width of the raised surface is small, which allows it to be in contact with the non-photosensitive area of ​​the filter.

[0021] According to some embodiments of the present invention, when the filter is absorbed, an adsorption cavity is formed between the background surface and the receiving groove.

[0022] The advantages of this invention are: by forming an adsorption cavity between the background surface and the receiving groove, the adsorption cavity can absorb the filter, and the large space of the adsorption cavity can tightly absorb the filter, preventing the filter from falling off.

[0023] According to some embodiments of the present invention, an air suction channel is provided between the suction head and the background component, and the air suction channel is connected to the adsorption chamber.

[0024] The advantage of this invention is that, through the suction channel, through holes are machined into the suction head and the background component to form the suction channel. The suction channel can be arranged in the middle of the background component, so that the filter is not easily misaligned when the suction head picks up the filter.

[0025] According to some embodiments of the present invention, a connecting pipe is included, which is used to connect the air intake channel and the external air extraction pipe.

[0026] The advantage of this invention is that by connecting the connecting tube to the external air extraction tube, a negative pressure can be formed in the air extraction channel, allowing the suction head to extract the filter.

[0027] According to some embodiments of the present invention, the suction head is provided with a square positioning part, one end of the connecting tube is provided with a mounting plate, and the mounting plate is provided with a positioning groove that matches the positioning part.

[0028] The advantage of this invention is that the positioning part and the positioning groove cooperate with each other to ensure that the suction head is accurately installed in the connecting pipe.

[0029] A detection device according to a second aspect of the present invention includes a suction fixture as described in any one of the above claims.

[0030] A detection device according to an embodiment of the present invention has at least the following beneficial effects:

[0031] This invention incorporates a detection device. The suction head moves with the filter, and the filter moves above the inspection device. The inspection device uses a CCD camera to capture images of the filter's photosensitive area, performing position recognition and foreign object detection. Through binarization processing, the foreign object and the background surface exhibit a clear color difference. Foreign object detection is performed using the grayscale values ​​of different areas of the image. If the grayscale value of the foreign object detected by the CCD camera is greater than the set grayscale threshold, it is displayed as defective. In automated production, foreign object detection can be performed simultaneously with position recognition of each suction filter. Only when no foreign object is found can the filter loading process continue, without affecting UPH (Usage Per Hour) and greatly improving production yield.

[0032] A mounting device according to a third aspect of the present invention includes a suction fixture as described in any one of the above claims.

[0033] A mounting device according to an embodiment of the present utility model has at least the following beneficial effects:

[0034] This invention features a mounting device that uses a dispensing mechanism to first dispense adhesive to the camera's designated position. A suction head then picks up the filter from the wafer disk and moves it to the CCD camera for image recognition using a moving component. If no foreign objects are found on the filter, the suction head moves it to the mounting position and mounts it at the dispensing location, completing the filter mounting process. This pre-mounting foreign object check significantly reduces the likelihood of foreign object defects in the camera.

[0035] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0036] To more clearly illustrate the technical solutions of the embodiments of this utility model or the prior art, 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.

[0037] Figure 1 This is a schematic diagram of the structure of a suction fixture according to an embodiment of the present utility model;

[0038] Figure 2 for Figure 1 A cross-sectional view of a suction jig is shown;

[0039] Figure 3 This is a schematic diagram of an inspection device according to an embodiment of the present invention detecting foreign objects on a filter;

[0040] Figure 4 This is a schematic diagram of an inspection filter for an inspection device according to an embodiment of the present invention;

[0041] Figure 5 This is a schematic diagram of a mounting device for mounting a filter according to an embodiment of the present invention.

[0042] Reference numerals: 100-Suction head, 110-Adsorption part, 120-Background component, 130-Background surface, 140-Adsorption chamber, 150-Flange, 160-Suction channel, 170-Positioning part, 180-Mounting plate, 190-Positioning groove, 200-Filter, 210-Photosensitive area, 220-CCD camera, 230-Connecting tube, 230-Visual recognition frame, 240-Visual inspection frame, 250-Foreign object. Detailed Implementation

[0043] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0044] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional 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.

[0045] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" and "second" are mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0046] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation, connection, and linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0047] The following description, in conjunction with the accompanying drawings, describes an embodiment of the present invention, including a suction fixture, a detection device, and a mounting device.

[0048] Reference Figure 1 The present invention aims to provide an embodiment of a suction fixture, a detection device, and a mounting device.

[0049] An embodiment of the present invention provides a suction fixture, including a suction head 100, which has an adsorption part 110 for adsorbing a filter 200, and the adsorption part 110 is provided with a receiving groove.

[0050] It is understood that by setting up the suction head 100, the present invention can use the moving component to drive the suction head 100 to move, and use the adsorption part 110 to pick up the filter 200 and move the filter 200 to the inspection position. If the filter 200 is found to have a foreign object 250, it is discarded. If no abnormality is found, the suction head 100 moves to above the camera installation position and installs the filter 200 in the corresponding installation position of the camera according to the process, thus completing the installation of the filter 200. This greatly reduces the number of filters 200 with foreign objects 250 installed inside the camera, reducing the occurrence of camera defects. In addition, during inspection, there is no need to pick up and put down the filter 200, which improves inspection efficiency and does not affect the efficiency of UPH and production.

[0051] An embodiment of the present invention provides a suction fixture, which further includes a background component 120 disposed in a receiving groove. The background component 120 has a background surface 130, the surface area of ​​which is larger than the surface area of ​​the photosensitive area 210 of the filter 200. When the filter 200 is suctioned, the background surface 130 is opposite to the filter 200 to cover the photosensitive area 210 of the filter 200.

[0052] It is understood that by setting a background component 120, when the suction head 100 picks up the filter 200, the background component 120 and the filter 200 are opposite each other, so that the background surface 130 becomes the inspection background of the filter 200. During inspection, the visual inspection equipment can inspect the entire photosensitive area 210 of the filter 200. Furthermore, through binarization processing, the foreign object 250 and the background surface 130 show a clear color difference. The foreign object 250 is detected by using the gray values ​​of different areas of the image. If the gray value of the detected foreign object 250 is greater than the set gray value threshold, it is displayed as a defect. This improves the detection rate of foreign objects 250 in the photosensitive area 210 of the filter 200 and reduces the occurrence of foreign object 250 defects.

[0053] In some embodiments of this utility model, the background surface 130 is black.

[0054] It is understandable that the background surface 130 of this utility model is black, so that the foreign object 250 and the background surface 130 present a clear black and white distinction, which makes the visual inspection equipment have a better recognition effect and improves the detection rate of foreign object 250.

[0055] Preferably, the background element 120 is made of black polyamide-imide material. Therefore, the black background can form a sharp contrast with the foreign object 250 on the filter 200, making the foreign object 250 more conspicuous. Moreover, the black surface of the polyamide-imide material has low reflectivity, which can reduce the reflection interference of ambient light or detection light source.

[0056] In some embodiments of this utility model, reference is made to Figure 2 When the filter 200 is absorbed, an adsorption cavity 140 is formed between the background surface 130 and the receiving groove.

[0057] It is understood that the utility model forms an adsorption cavity 140 between the background surface 130 and the receiving groove, and the adsorption cavity 140 is able to absorb the filter 200.

[0058] Furthermore, the adsorption cavity 140 has a large space, which can tightly hold the filter 200 and prevent the filter 200 from falling off.

[0059] Specifically, the vertical height of the adsorption cavity 140 is about 2mm, which makes the background surface 130 and the filter 200 2mm apart, resulting in better recognition of foreign objects 250.

[0060] In some embodiments of this utility model, the attachment has a flange 150, and the raised surface of the flange 150 is used to abut against the surface of the filter 200.

[0061] It is understood that the present invention uses the flange 150, which has a small width, to make the processed raised surface flatter and the raised surface in closer contact with the filter 200, thereby reducing vacuum leakage and ensuring that the suction head 100 can stably pick up the filter 200.

[0062] Specifically, the raised surface of the flange 150 is used to abut against the non-photosensitive area of ​​the filter 200. The width of the raised surface is small, which can adapt to contact with the non-photosensitive area 210 of the filter 200.

[0063] In some embodiments of this utility model, reference is made to Figure 2 An air intake channel 160 is provided between the head and the background component 120, and the air intake channel 160 is connected to the adsorption chamber 140.

[0064] It is understood that the present invention can form the suction channel 160 by processing through holes in the suction head 100 and the background component 120. The suction channel 160 can be arranged in the middle position of the background component 120, so that the filter 200 is not easily misaligned when the suction head 100 picks up the filter 200.

[0065] In some embodiments of this utility model, a connecting pipe 230 is included, which is used to connect the air intake channel 160 with the external air extraction pipe.

[0066] It is understood that this utility model uses the connecting pipe 230 to connect with the external air extraction pipe, so that the air extraction channel 160 can form a negative pressure, so that the suction head 100 can suck up the filter 200.

[0067] In some embodiments of this utility model, the suction head 100 is provided with a square positioning part 170, and one end of the connecting tube 230 is provided with a mounting plate 180. The mounting plate 180 is provided with a positioning groove 190 that matches the positioning part 170. Thus, by utilizing the cooperation between the positioning part 170 and the positioning groove 190, the suction head 100 is accurately installed in the connecting tube 230.

[0068] An embodiment of this utility model also proposes an inspection device, including a suction fixture and a CCD camera 220. The suction head 100 moves with a filter 200, and the filter 200 moves to above the inspection device. The inspection device can use the CCD camera 220 to capture images of the photosensitive area 210 of the filter 200, perform position recognition and foreign object 250 detection. Through binarization processing, the foreign object 250 and the background surface 130 show a clear color difference. The foreign object 250 is detected by using the gray values ​​of different areas of the image. If the gray value of the foreign object 250 detected by the CCD camera 220 is greater than the set gray value threshold, it is displayed as defective. If the gray value of the foreign object 250 is within the set range, it is displayed as good. The filter 200 is then moved to the mounting position.

[0069] An embodiment of this utility model also proposes a mounting device, including a suction fixture and a moving component. The mounting device can first perform a dispensing operation on the dispensing position of the camera using a dispensing mechanism. The suction head 100 will pick up the filter 200 on the wafer disk. The moving component will drive the suction head 100 to move the filter 200 to the CCD camera 220 for image recognition. If the filter 200 is found to be free of foreign objects 250, the suction head 100 will continue to move the filter 200 to the mounting position. The suction head 100 will mount the filter 200 at the dispensing position, thus completing the mounting of the filter 200.

[0070] The working principle of the embodiments of this utility model is as follows:

[0071] First, set the size of the visual recognition frame 230 of the CCD camera to cover the photosensitive area 210 of the filter 200. Set the threshold for foreign object 250 detection alarm, in units of CCD camera pixels. The current setting is to trigger an alarm if the detected white foreign object 250 is greater than the set threshold. If the detected white foreign object 250 is greater than the set threshold, it is judged as defective.

[0072] When the filter 200 is mounted, the mounting device can first perform adhesive dispensing on the camera using an adhesive dispensing mechanism.

[0073] Simultaneously, the suction head 100 picks up the filter 200. A moving component drives the suction head 100 to move, carrying the filter 200 with it. The filter 200 moves to above the CCD camera 220, as shown in the reference diagram. Figure 4 The CCD camera 220 captures images of the photosensitive area 210 of the filter 200 to perform position recognition and foreign object 250 detection. Through binarization processing, the foreign object 250 and the background surface 130 are clearly distinguished in black and white. The gray values ​​of different areas of the image are used to detect the foreign object 250.

[0074] Reference Figure 3When a white foreign object 250 on the filter 200 is detected by the visual inspection frame 240, if the gray value of the detected foreign object 250 is greater than the set gray value threshold, that is, greater than 1 pixel (about 6um), it is displayed as a defect, and the visual inspection frame 240 marks it, thus achieving the purpose of the filter 200 detecting the foreign object 250.

[0075] If a foreign object 250 is detected in filter 200, it is discarded, and the process continues to sample and identify the next filter 200. If no abnormalities are detected, refer to... Figure 5 The suction head 100 continues to move the filter 200 to the mounting position, and the suction head 100 mounts the filter 200 at the dispensing position, thus completing the mounting of the filter 200.

[0076] In the description of this specification, references to terms such as "an embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0077] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A suction tool characterized by comprising: include: A suction head (100) has an adsorption section (110) for adsorbing a filter (200), and the adsorption section (110) is provided with a receiving groove; Background component (120) is disposed in the receiving groove. The background component (120) has a background surface (130). The surface area of ​​the background surface (130) is larger than the surface area of ​​the photosensitive area (210) of the filter (200). When the filter (200) is absorbed, the background surface (130) is opposite to the filter (200) to cover the photosensitive area (210) of the filter (200).

2. The suction tool according to claim 1, wherein The background surface (130) is black.

3. The suction tool according to claim 1, wherein The adsorption part (110) has a flange (150), the raised surface of which is used to abut against the surface of the filter (200).

4. The suction tool according to claim 3, wherein The raised surface of the flange (150) is used to abut against the non-photosensitive area of ​​the filter (200).

5. The suction tool according to claim 1, wherein When the filter (200) is absorbed, an adsorption cavity (140) is formed between the background surface (130) and the receiving groove.

6. The suction tool according to claim 5, wherein An air intake channel (160) is provided between the suction head (100) and the background component (120), and the air intake channel (160) is connected to the adsorption chamber (140).

7. A suction fixture according to claim 6, characterized in that, Includes a connecting pipe (230) for connecting the air intake channel (160) to an external air extraction pipe.

8. A suction fixture according to claim 7, characterized in that, The suction head (100) is provided with a square positioning part (170), and one end of the connecting tube (230) is provided with a mounting plate (180). The mounting plate (180) is provided with a positioning groove (190) that matches the positioning part (170).

9. A detection device, characterized in that, Includes a suction fixture as described in any one of claims 1 to 8.

10. A mounting device, characterized in that, Includes a suction fixture as described in any one of claims 1 to 8.

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