Glass needle detection device and detection method
By designing a glass needle detection device combining a four-axis platform, microscope and image analysis software, the problems of inaccurate and low efficiency in the prior art are solved, automated detection is realized, and detection efficiency and accuracy are improved.
Patent Information
- Application Number
- CN202411835404.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-03-11
AI Technical Summary
The existing glass needle detection methods rely on manual observation and measurement, resulting in inaccurate detection results and low efficiency.
A glass needle detection device is designed, using a four-axis platform and a microscope combined with a clamping fixture and image analysis software to automatically collect multi-angle image or video data of the glass needle tip, and perform graphics and angle comparison analysis through a computer, and determine whether qualified or unqualified according to preset standards.
It improves the detection efficiency and accuracy of the results, reduces artificial subjective errors, and achieves rapid and accurate judgment of the quality of glass needles.
Smart Images
Figure CN119594861A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a glass needle detection device and detection method, belonging to the field of glass needle detection technology. Background Technology
[0002] In the field of assisted reproductive medicine, in vitro fertilization (IVF) is an essential step. One of the most commonly used tools in this process is the microinjection needle (glass needle). The function of the microinjection needle is to inject sperm attached to the needle body into the egg, thus creating a fertilized egg. The microinjection needle (glass needle) is a crucial tool (instrument) that determines the success and ease of injection. The size and shape of the needle tip play a key role. Currently, glass needle tips are manufactured manually under a microscope through heat melting and drawing. Because the tip of the glass needle is shaped by grinding, it is prone to forming double-edged, uneven edges. During IVF (piercing the egg wall), the inner edge can easily cut through the curved incision, damaging the egg and affecting its survival rate. Therefore, each manufactured glass needle must be individually tested to ensure a high pass rate. The current method of testing glass needles involves staff observing and measuring the shape and size of each needle tip under a microscope. Due to individual differences in staff experience, the test results are subject to significant subjective inaccuracies and the testing efficiency is low. Therefore, it is necessary to improve this method. Summary of the Invention
[0003] The purpose of this invention is to provide a glass needle detection device and method that can effectively improve detection efficiency and accuracy of detection results, thereby solving the problems of inaccurate detection results and low detection efficiency caused by manual detection.
[0004] The technical solution of the present invention is A method for detecting glass needles, characterized by comprising the following steps: 1) First, fix the clamping fixture to the four-axis platform of the glass needle detection device with screws. Then, press down on one end of the upper limit rod and the lower limit rod of the clamping fixture with one hand to open the clamping plates at the other end. Place the glass needle to be tested between the clamping plates through the packaging box with the other hand. Release the pressure on the end of the limit rod. Under the action of the torsion spring and the clamping rod, the clamping plates close, thereby clamping the glass needle to be tested on the clamping fixture and removing it from the packaging box. 2) Install the clamp containing the glass needle on the four-axis platform, and adjust the position of the clamp using the xyz axes of the four-axis platform so that the tip of the glass needle to be tested is focused under the microscope. 3) After the tip of the glass needle is focused under the microscope, the multi-path lens of the microscope can be used to acquire and upload images or video data of the tip from various angles. In particular, by adjusting the position of the x, y, and z axes of the four-axis platform, images or video data of different positions of the tip can be acquired and uploaded to the computer. 4) By the misalignment movement between the clamping plates, the glass needle to be tested can be rotated, thereby acquiring image or video data of the needle tip at different angles and uploading it to the computer; 5) After receiving the uploaded image or video data of different positions and angles of the glass needle, the computer uses image analysis software to compare and analyze the uploaded image or video data in terms of graphics and angles. Based on the pre-set qualification (judgment) standards, the computer compares and analyzes the obtained glass needle graphics and angle data to make a judgment result. That is, if the graphics and angles of the glass needle meet the set standard range, it is judged as a qualified product; if the graphics and angles of the glass needle exceed the standard range, it is judged as a non-qualified product.
[0005] The glass needle detection device described in step 1) consists of a four-axis platform, a microscope, and a computer equipped with image analysis software. Its features include: a four-axis platform positioned below the microscope lens; a clamping fixture movably mounted on the four-axis platform; a glass needle clamped in the clamping fixture; the microscope includes a low-magnification lens and a high-magnification lens; and the microscope is electrically connected to the computer to upload image data for comparative analysis.
[0006] The clamping fixture consists of a base, a transmission component, and a limiting clamp. The transmission component is fixedly mounted on the base via a mounting bracket. A limiting clamp is mounted on the base on one side of the transmission component. An upper rack and a lower rack are slidably mounted on the limiting clamp. A transmission gear is fixedly mounted on the short shaft of the limiting clamp corresponding to the upper rack and the lower rack. The transmission gear meshes with the upper rack and the lower rack to drive the upper rack and the lower rack to form a misaligned movement.
[0007] The limiting clamp consists of an upper limiting rod and a lower limiting rod, which are arranged vertically. The lower surface of the upper limiting rod and the upper surface of the lower limiting rod are respectively provided with dovetail grooves. An upper rack is slidably installed in the dovetail groove of the upper limiting rod, and a lower rack is slidably installed in the dovetail groove of the lower limiting rod.
[0008] The upper limit rod and the lower limit rod are provided with mounting ear plates on both sides of the dovetail groove in the middle part of the upper limit rod and the lower limit rod, and the upper limit rod and the lower limit rod are connected to each other through the mounting short shaft.
[0009] The upper and lower racks are fixedly fitted with clamping plates at one end, with one end of the clamping plate extending to the outer end of the dovetail groove.
[0010] The upper and lower limit rods are equipped with clamping rods by mounting short shafts and torsion springs to clamp the upper and lower limit rods, so that the clamping plates at the end of the rack are always in a clamped (closed) state.
[0011] The transmission component is a micro motor or handwheel, which is connected to the assembly short shaft to drive the transmission gear to rotate.
[0012] The beneficial effects of this invention are as follows: The detection device of this invention, when detecting glass needles, clamps the glass needle to be tested using a clamping plate of a clamping fixture. The position of the clamping fixture can be adjusted via the x, y, and z axes of a four-axis platform to focus the glass needle under a microscope. The misalignment movement of the clamping fixture rotates the glass needle, thereby acquiring image or video data of the needle tip from different angles and uploading it to a computer. The acquired image data from each angle is compared with pre-defined evaluation criteria by the computer to quickly provide evaluation results. This improves detection efficiency and accuracy, solving the problems of inaccurate results and low efficiency caused by existing manual detection methods, and has positive significance for the quality control of glass needles. Attached Figure Description
[0013] Figure 1 This is a side view of the clamping fixture of the detection device of the present invention. Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure after removing the base and transmission components.
[0014] In the diagram: 1. Base, 2. Mounting bracket, 3. Transmission component, 4. Upper limit rod, 5. Lower limit rod, 6. Dovetail groove, 7. Upper rack, 8. Lower rack, 9. Assembly ear plate, 10. Assembly short shaft, 11. Transmission gear, 12. Clamping plate, 13. Preload spring, 14. Clamping rod. Detailed Implementation
[0015] The glass needle detection device includes a four-axis platform, a clamping fixture, a microscope, and a computer equipped with image analysis software. The clamping fixture is movably mounted below the microscope lens via the four-axis platform, and a glass needle is movably clamped on the clamping fixture. The microscope includes a low-magnification lens and a high-magnification lens. The microscope is electrically connected to the computer to upload image data for comparative analysis and to determine whether the needle is qualified. The clamping fixture consists of a base 1, a transmission component 2, and a limiting clamp. The transmission component 3 is fixed to the base 1 via a mounting bracket 2, and a limiting clamp is installed on one side of the base 1 of the transmission component 3. The limiting clamp consists of an upper limiting rod 4 and a lower limiting rod 5, which are arranged vertically. Dovetail grooves 6 are correspondingly provided on the lower surface of the upper limiting rod 4 and the upper surface of the lower limiting rod 5. Assembly ears 9 are symmetrically arranged on both sides of the dovetail grooves in the middle of the upper limiting rod 4 and the lower limiting rod 5. The upper limiting rod 4 and the lower limiting rod 5 are connected to each other by the assembly ears 9 via an assembly short shaft 10, thus forming the limiting clamp.
[0016] An upper rack 7 is slidably installed in the dovetail groove 6 of the upper limit rod 4, and a lower rack 8 is slidably installed in the dovetail groove 6 of the lower limit rod 5. A transmission gear 11 is fixedly installed on the assembly short shaft 10 of the limit clamps corresponding to the upper rack 7 and the lower rack 8. The transmission gear 11 meshes with the upper rack 7 and the lower rack 8. Through the rotation of the transmission gear 11, the upper rack 7 and the lower rack 8 can be driven to form a misaligned movement.
[0017] A clamping plate 12 is fixedly mounted on one end of the upper rack 7 and the lower rack 8 respectively, and one end of the clamping plate 12 extends to the outer end of the dovetail groove 6. The clamping plate 12 is stepped to facilitate the clamping of the glass needle to be tested during operation.
[0018] The upper limit rod 4 and lower limit rod 5 of the limiting clamp are respectively equipped with clamping rods 14 via short shafts 10. The clamping rods 14 are arranged in a V-shape on the limiting clamp. A pre-tension spring 13 is provided between the clamping rods 14 of the upper limit rod 4 and the lower limit rod 5 to apply a clamping force between the upper limit rod 4 and the lower limit rod 5 so that the clamping plates 12 at the end of the rack are always in a clamped (closed) state.
[0019] The transmission component 3 is a micro motor or handwheel. The micro motor or handwheel is connected to the assembly short shaft 10 to drive the transmission gear 11 to rotate, thereby causing the upper rack 7 and the lower rack 8 to form a misaligned movement.
[0020] The method for detecting glass needles using the above-mentioned device is as follows: One hand first presses down one end of the upper limit rod 4 and the lower limit rod 5, so that the clamping plate 12 at the other end is opened. The other hand places the glass needle to be tested between the clamping plates 12, releases the pressing pressure at the end of the limit rod, and under the action of the pre-tension spring 13 and the clamping rod 12, the clamping plate 12 closes, thereby clamping the glass needle to be tested on the clamping fixture.
[0021] A clamp holding a glass needle is mounted on a four-axis platform via a base 1. The position of the glass needle is adjusted using the x, y, and z axes of the four-axis platform to focus the tip of the needle under the microscope. Once the needle tip is focused, images or video data of the tip from various angles can be acquired and uploaded using the microscope's multi-path lens. The position adjustment of the four-axis platform allows for the acquisition of images or video data at different points on the needle tip. A micro motor or handwheel drives the transmission gear 11 to rotate. This, in turn, causes a misalignment between the upper rack 7 and the lower rack 8. This misalignment causes the glass needle to rotate in both directions, thus acquiring images or video data of the needle tip from different angles.
[0022] After receiving the uploaded image or video data of the glass needle, the computer uses image analysis software to compare and analyze the graphics and angles of the uploaded image or video data. Based on the pre-set qualification standards, the computer makes a judgment based on the graphics and angle data obtained from the comparison and analysis. That is, if the graphics and angles of the glass needle meet the set standard range, it is judged as a qualified product; if the graphics and angles of the glass needle exceed the standard range, it is judged as a non-qualified product. This testing device can record the results of each test in detail, including the test time, the batch of glass needles, and the test results, so as to facilitate subsequent traceability and quality analysis. This allows for accurate determination of whether the glass needles are qualified, thereby ensuring the quality of glass needle products.
Claims
1. A method for detecting glass needles, characterized in that: It includes the following steps: 1) First, fix the clamping fixture on the four-axis platform of the glass needle detection device by screws, then press one end of the upper limit rod and the lower limit rod of the clamping fixture with one hand to form an open state between the clamping plates at the other end, and place the glass needle to be detected between the clamping plates through the packaging box with the other hand, release the pressing force of the limit rod end, and under the action of the torsion spring and the clamping rod; the clamping plates are closed, thereby completing the clamping of the glass needle to be detected on the clamping fixture and detaching from the packaging box; 2) Install the clamping fixture loaded with the glass needle on the four-axis platform, and use the xyz three-axis positions of the four-axis platform to adjust the position of the clamping fixture so that the tip of the glass needle to be tested is focused under the microscope; 3) After the tip of the glass needle is focused under the microscope, the multi-light path lens of the microscope can be used to collect and obtain images or video data of the tip at various angles and upload them. By adjusting the position of the three axes xyz of the four-axis platform, images or video data of different positions of the tip can be obtained and uploaded to the computer; 4) Through the dislocation movement between the clamping plates, the glass needle to be tested can be driven to rotate, thereby obtaining images or video data at different angles of the needle tip and uploading them to the computer; 5) After the computer receives the uploaded images or video data of different positions and angles of the glass needle, it uses the image analysis software in the computer to compare and analyze the graphics and angles of the uploaded images or video data; and according to the pre-set qualified (judgment) standards, compare and analyze the obtained glass needle graphics and angle data to make a judgment result; that is, if the graphics and angles of the glass needle meet the set standard range, it is judged as a qualified product; if the graphics and angles of the glass needle exceed the standard range, it is judged as an unqualified product.
2. A glass needle detection method according to claim 1, characterized in that: The glass needle detection device described in step 1) is composed of a four-axis platform, a microscope and a computer equipped with image analysis software. A four-axis platform is arranged below the lens of the microscope, a clamping fixture is movably installed on the four-axis platform, and a glass needle is clamped on the clamping fixture. The microscope includes a low-magnification lens and a high-magnification lens. The microscope is electrically connected to the computer to upload image data for comparative analysis.
3. A method for detecting glass needles according to claim 2, characterized in that: The clamping fixture is composed of a base (1), a transmission member (3) and a limit clamp. The base (1) is fixedly mounted with the transmission member (3) via a mounting frame (2). The limit clamp is mounted on the base (1) on one side of the transmission member (3). An upper rack (7) and a lower rack (8) are slidably mounted on the limit clamp. A transmission gear (12) is fixedly mounted on a short shaft (11) of the limit clamp assembly corresponding to the upper rack (7) and the lower rack (8). The transmission gear (12) is meshedly connected with the upper rack (7) and the lower rack (8) to drive the upper rack (7) and the lower rack (8) to form a dislocation movement.
4. A glass needle detection device according to claim 2, characterized in that: The limit clamp is composed of an upper limit rod (4) and a lower limit rod (5), the upper limit rod (4) and the lower limit rod (5) are arranged in an upper and lower shape, the lower surface of the upper limit rod (4) and the upper surface of the lower limit rod (5) are correspondingly provided with a dovetail groove (6), an upper rack (7) is slidably installed in the dovetail groove (6) of the upper limit rod (4), and a lower rack (8) is slidably installed in the dovetail groove (6) of the lower limit rod (5).
5. A glass needle detection device according to claim 4, characterized in that: Mounting ear plates (9) are correspondingly arranged on both sides of the dovetail groove (6) of the upper limit rod (4) and the lower limit rod (5), and the upper limit rod (4) and the lower limit rod (5) are connected to each other via an assembly short shaft (10).
6. A glass needle detection device according to claim 3, characterized in that: A clamping plate (14) is fixedly mounted on one end of the upper rack (7) and the lower rack (8) in a corresponding shape, and one end of the clamping plate (12) extends to the outer end of the dovetail groove (6).
7. A glass needle detection device according to claim 4, characterized in that: The upper limit rod (4) and the lower limit rod (5) are provided with a clamping rod (14) by assembling a short shaft (10), and a pre-tension spring (13) is provided between the clamping rods (14) of the upper limit rod 4 and the lower limit rod 5 to clamp the upper limit rod (4) and the lower limit rod (5), so that the clamping plates (12) at the ends of the rack are always in a clamping state.
8. A glass needle detection device according to claim 3, characterized in that: The transmission member (3) is a micro motor or a hand wheel, and the micro motor or the hand wheel is connected to the assembly short shaft (10) to drive the transmission gear (11) to rotate.