A vision-based positioning and focusing detection device

Abstract

This utility model discloses a positioning and focusing detection device based on vision inspection, relating to the field of fiber optic connector tailstock detection. It includes a tailstock detection machine, with multiple sets of storage components installed on the outer wall of the conveyor belt. A camera is installed inside the detection box. The output end of a second motor is connected to a positive and negative lead screw, and a set of positioning components is installed at both ends of the lead screw. When inspecting the large end of the tailstock, the production personnel place the tailstock upside down into a placement cylinder, with the large end facing upwards. The conveyor belt transports the placement cylinder to the detection area inside the detection box. Subsequently, the second motor drives the two sets of positioning components to move towards the placement cylinder, causing the positioning plate and clamping plate in the positioning components to clamp the tailstock, ensuring the tailstock is accurately positioned vertically directly below the camera. The system control box analyzes and detects the image of the inner diameter of the large end of the tailstock captured by the camera, thereby quickly completing the detection of the inner diameter of the large end of the tailstock.

Description

Technical Field

[0001] This utility model relates to the field of fiber optic connector tailstock detection, specifically a positioning and focusing detection device based on vision detection. Background Technology

[0002] Visual inspection is a technique that uses optical imaging, computer vision algorithms, and image processing technology to simulate the human visual system to extract, identify, and measure features of target objects. It involves capturing images of objects using industrial cameras, digitizing them, and then analyzing the geometric dimensions, shape, defects, and other information in the images using an image processing system. It is widely used in industrial production inspection, quality control, and other scenarios to achieve efficient, accurate, and non-contact inspection operations.

[0003] In the production process of fiber optic connector tailstocks, in order to ensure product quality and compatibility, the outer tube and its inner diameter parameters of the tailstock must be strictly inspected. The tailstock is photographed with a CCD industrial camera, and the camera converts the captured optical image into a digital signal, which is transmitted to the image processing system of the inspection device. The system compares and analyzes the digital image based on the pre-built qualified product template image information to determine whether the appearance integrity, diameter and other dimensions of the tailstock outer tube meet the standards, thus providing data support for tailstock production quality control.

[0004] However, the current fiber optic connector tailstock inspection process only focuses on the appearance of the tailstock and the inner wall of its small end, ignoring the key parameter of the inner diameter of the large end. The inner diameter of the large end also has a significant impact on the assembly compatibility between the tailstock and the optical fiber. If the inner diameter of the large end is too small, the optical fiber cannot be inserted smoothly, hindering production and assembly. If the inner diameter is too large, the optical fiber fixed in the tailstock of the fiber optic connector is very likely to loosen and fall out, thus affecting the overall performance and use effect of the fiber optic connector. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a positioning and focusing detection device based on vision detection to solve the technical problems mentioned in the background.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a positioning and focusing detection device based on vision detection, comprising a tailstock detection machine, a system control box installed on one side of the tailstock detection machine, a conveyor belt inside the tailstock detection machine, a first motor connected to one end of the conveyor belt, multiple sets of storage components installed on the outer wall of the conveyor belt, each storage component including a connecting plate, a placement cylinder on the top of the connecting plate, a tailstock placed inside the placement cylinder, a detection box on the top of the tailstock detection machine, a camera installed inside the detection box, fixing plates fixed to the inner walls on both sides of the detection box, a second motor installed on the inner wall of one set of fixing plates, a positive and negative lead screw connected to the output end of the second motor, a set of positioning components installed at both ends of the positive and negative lead screws, each positioning component including a pushing plate, a positioning plate connected to the bottom of the pushing plate, and a receiving box at the tail of the tailstock detection machine.

[0007] By adopting the above technical solution, the technical problem of only detecting the inner diameter of the small end of the tailstock in the current fiber optic connector tailstock inspection process is solved. When inspecting the large end of the tailstock, the production personnel place the tailstock upside down in the placement cylinder, with the large end facing upwards. The conveyor belt transports the placement cylinder to the inspection area inside the inspection box. Then, the second motor drives two sets of positioning components to move towards the placement cylinder, so that the positioning plate and clamping plate in the positioning components clamp the tailstock, making the tailstock accurately upright directly below the camera. The system control box analyzes and inspects the image of the inner diameter of the large end of the tailstock taken by the camera, thereby enabling the rapid completion of the inspection of the inner diameter of the large end of the tailstock.

[0008] The present invention is further configured such that the system control box is electrically connected to the first motor, the second motor and the camera respectively.

[0009] Preferably, the system control box is capable of controlling the operation of the first motor, the second motor, and the camera, and is capable of transmitting signals to each other.

[0010] The present invention is further configured such that fixing bolts are installed at the four corners of the connecting plate, and the connecting plate is configured as a rectangle.

[0011] Preferably, the connecting plate is fixedly installed on the conveyor belt by fixing bolts.

[0012] The present invention is further configured such that a fixing column is fixed to the outer wall of the conveyor belt, and the fixing column is elastic; a nut is installed inside the fixing column, and the nut is fixed inside the fixing column by a vulcanization reaction.

[0013] Preferably, the connecting plate is securely mounted on the outer wall of the conveyor belt by means of a fixing bolt and a nut.

[0014] The present invention is further configured such that the interior of the placement cylinder is provided with a placement groove, and the inner wall of the placement groove is inverted conical.

[0015] Preferably, the placement cylinder can support the tailstock placed inside it, and the placement groove is inverted conical in shape, which makes it convenient for personnel to place the tailstock into the placement cylinder.

[0016] The present invention is further configured such that a clamping plate is fixed to the bottom of the positioning plate, and through grooves are provided on the outer walls of both sides of the placement cylinder.

[0017] Preferably, during the movement of the positioning plate toward the tailstock, the clamping plate will squeeze and clamp the bottom part of the tailstock through the through groove on the outer wall of the placement cylinder, so that the tailstock is placed vertically in the placement cylinder.

[0018] The present invention is further configured such that the positioning plate is arc-shaped, and rubber pads are installed on the inner walls of both the positioning plate and the clamping plate.

[0019] Preferably, when the positioning assembly clamps and fixes the tailstock, the rubber pads on the inner walls of the positioning plate and the clamping plate can reduce the squeezing damage to the tailstock caused by the positioning assembly.

[0020] The present invention is further configured such that a limiting rod passes through one side of the push plate, and the limiting rod is fixedly installed on the inner wall of the detection box.

[0021] Preferably, when the positive and negative lead screws drive the push plate to move, the limiting rod on one side of the push plate limits and controls the movement direction of the push plate, so that the push plate can always be parallel to the inner wall of the detection box during horizontal movement.

[0022] The present invention is further configured such that connecting rods are fixed on both sides of the outer wall of the camera, and a fill light is installed at the end of the connecting rod, and the glass lens of the fill light is made of frosted glass.

[0023] Preferably, the fill light illuminates the tailstock to provide sufficient light for the camera to take pictures of the tailstock, and the glass lens of the fill light head is made of frosted glass to reduce the reflection phenomenon generated on the tailstock wall.

[0024] In summary, the present invention has the following main advantages:

[0025] 1. This utility model solves the technical problem of only detecting the inner diameter of the small end of the tailstock in the current fiber optic connector tailstock detection process by setting up a tailstock detection machine, a system control box, a storage component, a positioning component, and a camera. When the production personnel detect the large end of the tailstock, they place the tailstock upside down in the placement cylinder with the large end facing upwards. The conveyor belt transports the placement cylinder to the detection area inside the detection box. Then, the second motor drives two sets of positioning components to move towards the placement cylinder, so that the positioning plate and clamping plate in the positioning component clamp the tailstock, making the tailstock accurately stand upright directly below the camera. The system control box analyzes and detects the image of the inner diameter of the large end of the tailstock taken by the camera, thereby enabling the rapid detection of the inner diameter of the large end of the tailstock.

[0026] 2. This utility model, by setting up a connecting rod, a fill light, and a color plate, allows the fill lights installed on both sides of the camera to illuminate the tailstock during the camera's shooting process, thus providing sufficient light for the camera to capture the tailstock. Furthermore, the glass lens of the fill light head is made of frosted glass to reduce the reflection phenomenon generated on the tailstock wall, and the black color plate can increase the distinction between the tailstock and surrounding objects in the photograph, thereby increasing the recognition of the tailstock in the photo by the image processing system. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall device of this utility model;

[0028] Figure 2 This is a schematic diagram of the tail end of the device of this utility model;

[0029] Figure 3 This is a schematic diagram of the storage component of this utility model;

[0030] Figure 4 This is a schematic diagram of the installation of the fixing column of this utility model;

[0031] Figure 5 This is a schematic diagram of the interior of the testing box of this utility model;

[0032] Figure 6 This is a schematic diagram of the positioning component of this utility model;

[0033] Figure 7 This is a schematic diagram of the installation of the color plate of this utility model.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Tailstock inspection machine; 101. System control box; 102. Receiving box; 2. Connecting plate; 201. Fixing bolt; 202. Placement cylinder; 203. Placement groove; 204. Through groove; 3. Conveyor belt; 301. First motor; 302. Fixing column; 303. Nut; 4. Tailstock; 5. Inspection box; 6. Camera; 601. Connecting rod; 602. Supplementary light; 7. Push plate; 701. Positioning plate; 702. Clamping plate; 703. Rubber pad; 704. Color plate; 8. Positive and negative lead screws; 801. Second motor; 802. Fixing plate; 803. Limiting rod. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0037] The embodiments of this utility model will be described below based on its overall structure.

[0038] First embodiment:

[0039] Please see Figure 1 — Figure 6 The system includes a tailstock detection machine 1, a system control box 101 mounted on one side of the tailstock detection machine 1, a conveyor belt 3 inside the tailstock detection machine 1, a first motor 301 connected to one end of the conveyor belt 3, multiple storage components mounted on the outer wall of the conveyor belt 3, each storage component including a connecting plate 2, a placement cylinder 202 mounted on the top of the connecting plate 2, a tailstock 4 placed inside the placement cylinder 202, a detection box 5 mounted on the top of the tailstock detection machine 1, a camera 6 mounted inside the detection box 5, fixing plates 802 fixed to the inner walls on both sides of the detection box 5, a second motor 801 mounted on the inner wall of one set of fixing plates 802, a positive and negative lead screw 8 connected to the output end of the second motor 801, a positioning component mounted on both ends of the positive and negative lead screw 8, each positioning component including a push plate 7, a positioning component connected to the bottom of the push plate 7. The tail end of the plate 701 and the tail shank inspection machine 1 is equipped with a receiving box 102, which solves the technical problem that the current fiber optic connector tail shank inspection process only detects the inner diameter of the small end of the tail shank. When the production personnel inspect the large end of the tail shank 4, they place the tail shank 4 upside down into the placement cylinder 202, so that the large end of the tail shank 4 faces upward. The conveyor belt 3 transports the placement cylinder 202 to the inspection area inside the inspection box 5. Then, the second motor 801 drives two sets of positioning components to move towards the placement cylinder 202, so that the positioning plate 701 and the clamping plate 702 in the positioning components clamp the tail shank 4, so that the tail shank 4 is accurately upright directly below the camera 6. The system control box 101 analyzes and inspects the image of the inner diameter of the large end of the tail shank 4 taken by the camera 6, so as to quickly complete the inspection of the inner diameter of the large end of the tail shank 4.

[0040] For details regarding the above embodiments, please refer to [link / reference]. Figure 1 , Figure 2 and Figure 5 The system control box 101 is electrically connected to the first motor 301, the second motor 801 and the camera 6 respectively. The system control box 101 can control the operation of the first motor 301, the second motor 801 and the camera 6 and can transmit signals to each other.

[0041] For details regarding the above embodiments, please refer to [link / reference]. Figure 3 The four corners of the connecting plate 2 are equipped with fixing bolts 201. The connecting plate 2 is rectangular and is fixedly installed on the conveyor belt 3 by fixing bolts 201.

[0042] For details regarding the above embodiments, please refer to [link / reference]. Figure 4 The outer wall of the conveyor belt 3 is fixed with a fixing post 302, and the fixing post 302 is elastic. A nut 303 is installed inside the fixing post 302, and the nut 303 is fixed inside the fixing post 302 through a vulcanization reaction. The connecting plate 2 is connected to the nut 303 through a fixing bolt 201, so that the connecting plate 2 is stably set on the outer wall of the conveyor belt 3.

[0043] For details regarding the above embodiments, please refer to [link / reference]. Figure 3 The placement cylinder 202 has a placement groove 203 inside, and the inner wall of the placement groove 203 is inverted conical. The placement cylinder 202 can support the tail handle 4 placed inside it, and the inverted conical shape of the placement groove 203 makes it convenient for personnel to place the tail handle 4 into the placement cylinder 202.

[0044] For details regarding the above embodiments, please refer to [link / reference]. Figure 6 The bottom of the positioning plate 701 is fixed with a clamping plate 702. The outer walls of both sides of the placement cylinder 202 are provided with through grooves 204. During the movement of the positioning plate 701 toward the tail shank 4, the clamping plate 702 will squeeze and clamp the bottom part of the tail shank 4 through the through grooves 204 on the outer wall of the placement cylinder 202, so that the tail shank 5 is placed vertically in the placement cylinder 202.

[0045] For details regarding the above embodiments, please refer to [link / reference]. Figure 6 The positioning plate 701 is designed to be arc-shaped. Both the inner walls of the positioning plate 701 and the clamping plate 702 are equipped with rubber pads 703. When the positioning assembly clamps and fixes the tail shank 4, the rubber pads 703 on the inner walls of the positioning plate 701 and the clamping plate 702 can reduce the squeezing damage to the tail shank 4 by the positioning assembly.

[0046] For details regarding the above embodiments, please refer to [link / reference]. Figure 5A limiting rod 803 passes through one side of the push plate 7, and the limiting rod 803 is fixedly installed on the inner wall of the detection box 5. When the positive and negative screws 8 drive the push plate 7 to move, the limiting rod 803 on one side of the push plate 7 limits the movement direction of the push plate 7, so that the push plate 7 can always be parallel to the inner wall of the detection box 5 during horizontal movement.

[0047] For details regarding the above embodiments, please refer to [link / reference]. Figure 5 The camera 6 has connecting rods 601 fixed on both sides of its outer wall. A fill light 602 is installed at the end of the connecting rod 601. The glass lens of the fill light 602 is made of frosted glass. The fill light 602 illuminates the tail 4, thereby providing sufficient light for the camera 6 to take pictures of the tail 4. The glass lens of the head of the fill light 602 is made of frosted glass to reduce the reflection phenomenon generated on the wall of the tail 4.

[0048] Second embodiment:

[0049] Please see Figure 7 Both sets of positioning plates 701 are equipped with a colored plate 704 on top, and the wall of the colored plate 704 is black. The supplementary lights 602 installed on both sides of the camera 6 illuminate the top part of the tail shank 4, thereby providing sufficient light for the camera 6 to take pictures of the large end of the tail shank 4. The colored plate 704 is black, which can increase the distinction between the tail shank 4 and the surrounding objects in the picture, thereby increasing the recognition of the tail shank 4 in the picture by the image processing system.

[0050] In practical operation, before using the tailstock inspection machine 1 to inspect the tailstock 4 to be inspected, the operator first inputs the image information of the inner diameter of the large end of the qualified tailstock 4 into the system control box 101. The system control box 101 is electrically connected to the first motor 301, the second motor 801, and the camera 6. The system control box 101 sends intermittent operation commands to the first motor 301, which drives the conveyor belt 3 to rotate. The distance that the conveyor belt 3 moves each time is equal to the distance between two adjacent sets of storage components on the outer wall of the conveyor belt 3, so that the conveyor belt 3 can accurately transport the storage components to the position directly below the camera 6. The conveyor belt 3 stops rotating, and then the system control box 101 sends an operation command to the second motor 801. The second motor 801 drives the positive and negative lead screws 8 to rotate. The rotating positive and negative lead screws 8 drive the two sets of positioning components connected by threads on their outer walls to move closer to each other. The two sets of push plates 7 move closer to each other through the positioning plates 701 fixed at their bottoms. The positioning plate 701 moves towards the tail shank 4 from both sides of the placement cylinder 202 and clamps and fixes the tail shank 5. During the movement of the positioning plate 701 towards the tail shank 4, the clamping plate 702 will squeeze and clamp the bottom part of the tail shank 4 through the through groove 204 on the outer wall of the placement cylinder 202, so that the tail shank 5 is placed vertically in the placement cylinder 202. When the two sets of positioning plates 701 come into contact with each other, the second motor 801 stops running. Then the camera 6 takes a picture of the large end of the tail shank 4 from directly above the tail shank 4. The camera 6 converts the captured optical image into a digital signal and transmits it to the image processing system of the system control box 101. The system compares and analyzes the digital image based on the pre-constructed qualified product template image information. If the inner diameter of the large end of the tail shank 4 is found to be unqualified, the system control box 101 displays the unqualified tail shank 4 photo image on the display screen of the system control box 101, so that the personnel know whether the tested tail shank 4 is qualified.

[0051] When the photo image is transmitted to the system control box 101, the second motor 801 drives the positive and negative lead screws 8 to rotate in the opposite direction. The reverse rotation of the positive and negative lead screws 8 drives the two sets of positioning components to move to both sides of the placement cylinder 202, thereby releasing the positioning and fixing of the tail shank 4. The system control box 101 sets the control stop time of the first motor 301 to 10 seconds. During these 10 seconds, the positioning components inside the inspection box 5 complete the fixing and unfixing operations, and the camera 6 completes the shooting. When the first motor 301 drives the conveyor belt 3 to run, the inspected tail shank 4 is transmitted to the end of the conveyor belt 3. The tail shank 4 slides down from the placement cylinder 202 at an angle into the receiving box 102 for collection.

[0052] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A positioning and focusing detection device based on vision detection, comprising a tailstock detection machine (1), characterized in that: A system control box (101) is installed on one side of the tailstock testing machine (1). A conveyor belt (3) is installed inside the tailstock testing machine (1). One end of the conveyor belt (3) is connected to a first motor (301). Multiple storage components are installed on the outer wall of the conveyor belt (3). The storage components include a connecting plate (2). A placement cylinder (202) is provided on the top of the connecting plate (2). The tailstock (4) is placed inside the placement cylinder (202). A testing box (5) is provided on the top of the tailstock testing machine (1). A camera (6) is installed inside the test box (5). Fixing plates (802) are fixed on the inner walls of both sides of the test box (5). A second motor (801) is installed on the inner wall of a set of fixing plates (802). The output end of the second motor (801) is connected to a positive and negative lead screw (8). A set of positioning components is installed at both ends of the positive and negative lead screw (8). The positioning components include a push plate (7). The bottom of the push plate (7) is connected to a positioning plate (701). A receiving box (102) is provided at the tail of the tail shank tester (1).

2. The positioning and focusing detection device based on vision detection according to claim 1, characterized in that: The system control box (101) is electrically connected to the first motor (301), the second motor (801), and the camera (6), respectively.

3. The positioning and focusing detection device based on vision detection according to claim 1, characterized in that: Fixing bolts (201) are installed at the four corners of the connecting plate (2), and the connecting plate (2) is set as a rectangle.

4. The positioning and focusing detection device based on vision detection according to claim 1, characterized in that: The outer wall of the conveyor belt (3) is fixed with a fixing column (302), and the fixing column (302) is elastic. A nut (303) is installed inside the fixing column (302), and the nut (303) is fixed inside the fixing column (302) by a vulcanization reaction.

5. The positioning and focusing detection device based on vision detection according to claim 1, characterized in that: The placement cylinder (202) has a placement groove (203) inside, and the inner wall of the placement groove (203) is inverted conical.

6. The positioning and focusing detection device based on vision detection according to claim 1, characterized in that: The bottom of the positioning plate (701) is fixed with a clamping plate (702), and the outer walls on both sides of the placement cylinder (202) are provided with through grooves (204).

7. A positioning and focusing detection device based on vision detection according to claim 6, characterized in that: The positioning plate (701) is set in an arc shape, and rubber pads (703) are installed on the inner walls of both the positioning plate (701) and the clamping plate (702).

8. The positioning and focusing detection device based on vision detection according to claim 1, characterized in that: One side of the push plate (7) is penetrated by a limiting rod (803), and the limiting rod (803) is fixedly installed on the inner wall of the detection box (5).

9. A positioning and focusing detection device based on vision detection according to claim 1, characterized in that: The camera (6) has connecting rods (601) fixed on both sides of its outer wall. A fill light (602) is installed at the end of the connecting rod (601), and the glass lens of the fill light (602) is made of frosted glass.

10. A positioning and focusing detection device based on vision detection according to claim 1, characterized in that: A colored plate (704) is installed on the top of the positioning plate (701), and the wall of the colored plate (704) is black.

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