A novel screen detection system
Patent Information
- Application Number
- CN202522318244.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-31
- Publication Date
- 2026-08-18
- Estimated Expiration
- 2035-10-31
AI Technical Summary
[0003]本实用新型所要达到的目的就是提供一种新型筛网检测系统，解决传统的通过人工对筛网网孔测量，测量法通常依赖检测人员使用卡尺、显微镜等工具对筛网孔径进行逐一测量，检测效率低效的问题
1.本实用新型通过“检测辅助装置－亚克力夹板－扫描仪”的系统级协同设计，构建半自动化检测流程，从样本定位、上料到扫描全程减少人工干预耗时：装配台的限位槽与上圈开口可快速实现两块亚克力夹板及标准化筛网样本的对齐，避免人工反复调整筛网经纬线与夹板边缘平行的操作耗时；上料驱动小车通过移动导轨、平移小车与升降导轨的配合，结合负压吸盘对亚克力夹板的稳定吸附，可将固定好样本的夹板自动、精准输送至扫描仪扫描中心，可替代传统人工搬运、定位样本的繁琐步骤，无需多次移动样本即可获取完整孔结构图像。相较于现有技术中人工上料定位或传统仪器局部检测，本系统单样本检测效率大幅提升，且支持连续批量检测，有效满足矿业、化工等行业大规模筛网检测的工业化需求。
Smart Images
Figure CN224650554U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of screen production technology, and in particular to a novel screen detection system. Background Technology
[0002] As a commonly used component for material separation and filtration, the size and number of pores in a sieve directly determine its separation accuracy, filtration efficiency, and service life. Therefore, accurate detection of the pore size and number of pores in a sieve is crucial. Currently, the commonly used sieve detection methods in the industry mainly include manual measurement and traditional instrument measurement. Manual measurement methods typically rely on inspectors using tools such as calipers and microscopes to measure the aperture of each sieve individually, while manually counting the number of holes. This method is not only extremely inefficient, especially for sieves with a large number of holes, requiring significant time and manpower, but it is also easily affected by subjective factors of the inspectors, such as measurement angle, operational proficiency, and counting errors, resulting in poor accuracy and repeatability of the measurement results, making it difficult to meet the needs of large-scale, high-precision sieve inspection. Utility Model Content
[0003] The purpose of this invention is to provide a novel screen inspection system that solves the problem of low efficiency in traditional methods of manually measuring screen mesh openings, which typically rely on inspectors using tools such as calipers and microscopes to measure the mesh opening diameter one by one.
[0004] To achieve the above objectives, this utility model adopts the following technical solution: a novel screen detection system, comprising a scanner, a detection computer, acrylic clamps, and a detection auxiliary device. The scanner transmits the scanned image to the detection computer, which is used to detect the screen mesh diameter. The detection auxiliary device includes a loading drive trolley, a negative pressure suction cup, and an assembly table. The loading drive trolley is arranged along the length direction of the scanner, and the assembly table is arranged along the width direction of the scanner. Two acrylic clamps are stacked on the assembly table, and the screen is placed between the two acrylic clamps and fixed by rubber rings. The negative pressure suction cup adsorbs the upper acrylic clamp, and the loading drive trolley moves the acrylic clamp to be placed in the scanning area of the scanner.
[0005] Furthermore, the acrylic clamping plate includes a rectangular clamping plate and fixing ears disposed at both ends of the rectangular clamping plate.
[0006] Furthermore, the assembly table has a limiting groove and upper ring openings located at both ends of the limiting groove. The inner width and inner length of the limiting groove are equal to the width and length of the rectangular clamping plate, and the fixing ear extends out of the upper ring opening.
[0007] Furthermore, gripping slots are provided on both sides of the assembly table.
[0008] Furthermore, the four bottom corners of the limiting groove are provided with elastic support platforms. The elastic support platform includes a guide post, a spring and a support plate. The spring is located inside the guide post, and the support plate is located above the spring and abuts against the rectangular clamping plate.
[0009] Furthermore, the loading drive trolley includes a moving guide rail arranged along the length direction of the scanner, a lifting guide rail arranged on the moving guide rail, and a bracket arranged on the lifting guide rail.
[0010] Furthermore, the bracket has a rotating platform, a rotary cylinder, and a mounting plate at the end away from the lifting guide rail. The rotating platform is rotatably mounted on the bracket, the rotary cylinder is fixedly mounted on the bracket and connected to the rotating platform, and the mounting plate is fixedly mounted on the rotating platform.
[0011] Furthermore, the negative pressure suction cups are symmetrically arranged at both ends of the mounting plate, and the rear ends of the negative pressure suction cups at both ends are provided with air source interfaces.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model constructs a semi-automated detection process through a system-level collaborative design of "detection auxiliary device - acrylic clamping plate - scanner," reducing manual intervention time throughout the entire process from sample positioning and loading to scanning: the limiting groove and upper ring opening of the assembly table can quickly align two acrylic clamping plates and standardized sieve samples, avoiding the time-consuming operation of repeatedly adjusting the warp and weft lines of the sieve to be parallel with the edge of the clamping plate; the loading drive trolley, through the cooperation of the moving guide rail, the translation trolley and the lifting guide rail, combined with the stable adsorption of the acrylic clamping plate by the negative pressure suction cup, can automatically and accurately transport the clamping plate with the fixed sample to the scanning center of the scanner, which can replace the tedious steps of traditional manual sample handling and positioning, and obtain a complete pore structure image without multiple sample movements. Compared with the existing technology of manual loading and positioning or local detection by traditional instruments, this system significantly improves the single sample detection efficiency and supports continuous batch detection, effectively meeting the industrial needs of large-scale sieve detection in industries such as mining and chemical engineering.
[0013] 1. This utility model significantly shortens the detection time by cutting the sieve into standardized samples, clamping the samples between two acrylic plates, and combining rapid scanning with a film scanning instrument and automatic identification and measurement with image processing software. Compared with manual measurement methods, it greatly improves detection efficiency and can meet the needs of large-scale sieve detection.
[0014] 2. This utility model, through the design of the limiting groove and upper ring opening of the assembly table, enables the two acrylic clamps to be quickly aligned and superimposed. The assembly size is designed to be the same as the size of the standardized sample cut from the sieve. The limiting groove ensures that the warp and weft threads of the sieve remain parallel to the edge of the clamp. The two superimposed acrylic clamps are bound together with rubber rings, which prevents the acrylic clamps from protruding too much twice, thus preventing the scanner from closing, while keeping the two acrylic clamps firmly clamping the sieve.
[0015] 3. When two acrylic clamps are stacked and bound together, the upper acrylic clamp is adsorbed by a negative pressure suction cup, and the two bound acrylic clamps are taken out of the assembly table by a lifting trolley. The clamps are then accurately delivered to the scanning sampling center of the scanner by a translation trolley, which can send the clamps to the scanning center and avoid the omission of scanning areas or image distortion caused by the positional deviation of manual placement. Attached Figure Description
[0016] The present invention will be further described below with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the overall structure of a novel screen detection system according to this utility model; Figure 2 This is a schematic diagram of the structure of the material loading drive trolley; Figure 3 This is a structural diagram of the assembly platform.
[0017] In the diagram: 1. Scanner; 2. Inspection computer; 3. Acrylic clamping plate; 31. Rectangular clamping plate; 32. Fixing ear; 4. Inspection auxiliary device; 41. Loading drive trolley; 411. Moving guide rail; 412. Translation trolley; 413. Lifting guide rail; 414. Lifting trolley; 415. Bracket; 416. Rotary table; 417. Rotary cylinder; 418. Mounting plate; 42. Negative pressure suction cup; 421. Air source interface; 43. Assembly table; 431. Limiting groove; 432. Upper ring opening; 433. Gripping groove; 5. Elastic support platform; 51. Guide column; 52. Spring; 53. Support plate. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.
[0019] The technical solution of this utility model will be described in detail below with specific embodiments. The following specific embodiments can be selected to be combined or substituted with each other according to the actual situation, and the same or similar concepts or processes may not be described again in some embodiments.
[0020] like Figures 1 to 3 As shown, this utility model provides a novel sieve detection system, and the specific steps for detecting sieve samples are as follows: Step 1: Sample preparation using a sieve Select the sieve to be tested and use a cutting tool with an accuracy of not less than 0.1 mm to cut the sieve into test samples of uniform size. The size of the test sample is 8 cm × 3 cm. During the cutting process, ensure that the cut edges are flat to avoid deformation or damage to the sieve hole structure caused by the cutting operation. At the same time, ensure that the test sample can completely reflect the overall hole distribution characteristics of the sieve to be tested. If there are local damages or abnormal hole structures in the sieve to be tested, the area should be avoided during cutting. Select the area with complete sieve structure and uniform hole distribution as the test sample.
[0021] Step 2: Fixing the sieve sample To prepare a homemade clamping plate, the homemade clamping plate in this utility model consists of an acrylic clamping plate 3, which is composed of a rectangular clamping plate 31 and fixing ears 32 at both ends of the rectangular clamping plate 31. The rectangular clamping plate 31 is composed of two transparent rigid plates with a size of 8 cm × 3 cm. The thickness of the plates is controlled between 1-3 mm to ensure the hardness and light transmittance of the clamping plate and avoid affecting the subsequent scanning effect. At the same time, the mounting stage 43 has a limiting groove 431 with a size of 8 cm × 3 cm. First, place one acrylic clamping plate 3 with part of the rectangular clamping plate 31 in the limiting groove 431, and place the fixing ears 32 at both ends in the upper opening 432. Then, place the prepared 8 cm × 3 cm sieve detection sample on the first acrylic clamping plate. 3. Finally, place another acrylic clamp 3 between the two transparent acrylic clamps 3 to hold the screen test sample. At this time, the size of the limiting groove 431 ensures that the warp and weft of the screen are parallel to the edge of the clamp, without the need for further adjustment. Then, drive the lifting trolley 414 to drive the negative pressure suction cup 42 to press down the upper acrylic clamp 3, making the screen test sample flat and fixed. Then, use rubber rings to fit the fixing ears 32 on both sides of the acrylic clamp 3 to tightly fit the two acrylic clamps 3 together. Finally, drive the negative pressure suction cup 42 to generate suction force to adsorb the upper acrylic clamp 3 and move the assembled acrylic clamp 3 to the center of the scanner 1.
[0022] Step 3: Scanning the sieve sample Place the acrylic clamp 3, which holds the sieve sample in step two, onto the scanning platform of the film scanner 1. Use the loading drive carriage 41 and the negative pressure suction cup 42 to precisely align the center of the sieve sample with the scanning center of the scanner 1. Set the scanning parameters of the film scanner 1 according to the sieve's pore density and aperture size. The scanning resolution should be no less than 9600 dpi to ensure the scanned image clearly displays the sieve's pore structure details. Select the reverse film mode for easier subsequent image processing. Set the scanning area to an 8 cm × 3 cm area matching the size of the sieve sample to avoid scanning unnecessary areas and increasing image processing workload. After setting the parameters, start the film scanner 1 to scan the sieve sample. After scanning, generate a high-resolution digital image of the sieve sample and save the image in a common image format (such as JPEG, PNG, TIFF, etc.) to provide high-quality image data for subsequent image processing. Step 4: Image Processing and Hole Recognition Import the high-resolution digital image of the screen obtained in step three into the inspection computer 2. The inspection computer 2 is equipped with image processing software, which must have functions such as image enhancement, threshold adjustment, region recognition, and parameter measurement, such as ImageJ, Photoshop, or Halcon. Operate within the image processing software according to the following procedure: Image preprocessing: First, the scanned image is denoised by using noise reduction algorithms in the software (such as Gaussian filtering, median filtering, etc.) to remove noise interference in the image and ensure image clarity. Then, the image is contrast-enhanced by adjusting the brightness and contrast parameters to create a clear grayscale difference between the wire mesh and the holes, which facilitates the subsequent identification of the hole structure. Hole Region Recognition: After image preprocessing, the threshold segmentation function of the image processing software is used to adjust the threshold parameters, separating the brighter areas (i.e., the hole areas of the screen) from the darker areas (i.e., the wire areas of the screen). Since the wires of the screen are solid structures, they appear as darker areas in the scanned image, while the hole areas are hollow structures with good light transmission, appearing as brighter areas. Therefore, by adjusting the threshold parameters, all bright objects in the image, i.e., the hole areas of the screen, can be accurately selected, achieving preliminary recognition of the screen holes. Hole Parameter Setting and Accurate Identification: To avoid misidentifying impurities, noise, and other interference areas in the image as screen holes, specific parameters need to be set for the hole area in the image processing software for filtering. These parameters include the minimum and maximum hole area, and roundness (or rectangularity, selected according to the shape of the screen hole). The minimum and maximum hole areas are set based on the theoretical aperture range of the screen to be tested. For example, if the theoretical aperture of the screen to be tested is 0.1–1 mm, then the aperture corresponding to the minimum area is set to 0.08 mm, and the aperture corresponding to the maximum area is set to 1.2 mm to ensure coverage of the actual possible aperture deviation range. The roundness parameter is set according to the shape of the screen hole. If the screen hole is circular, the roundness is set to 0.8–1.0; if it is square or other shapes, the corresponding shape parameters are adjusted. Through the above parameter settings, the image processing software can filter the initially identified hole area, eliminating interference areas that do not meet the parameter requirements, thereby achieving accurate identification of the screen hole. Step Five: Data Statistics and Result Output After the image processing software accurately identifies the screen openings, the software's measurement function automatically reads the diameter of each identified screen opening and counts the number of openings in the screen sample. The aperture size is measured by the software automatically calculating the equivalent diameter (for circular openings) or side length (for square openings), with a measurement accuracy of 0.001 mm. Subsequently, the image processing software statistically analyzes all measured aperture data, automatically calculating and outputting the maximum, minimum, and average aperture values. Simultaneously, the software generates an aperture distribution histogram, visually displaying the distribution of the screen apertures. Inspectors can comprehensively understand the aperture accuracy and uniformity of the screen under inspection based on the statistically obtained number of holes, maximum, minimum, and average aperture values, and the aperture distribution histogram. If an overall quality assessment of the screen is required, multiple 2cm × 2cm samples from different areas can be repeatedly tested. The results from these multiple samples can then be comprehensively analyzed to obtain more accurate and comprehensive information on the screen aperture size and number.
[0023] In this embodiment, both the moving guide rail 411 and the lifting guide rail 413 are equipped with guide rail screws. The translation trolley 412 and the lifting trolley 414 are mounted on the guide rail screws via screw nuts and driven by a screw drive motor. The drive of the screw drive motor causes the translation trolley 412 to move along the length of the scanner 1, thereby moving the assembled acrylic clamp 3 with the screened sample from the assembly table 43 to the center of the scanning area of the scanner 1. The angle is adjusted by the rotary cylinder 417 so that the acrylic clamp 3 can be placed in the center of the scanning area. Then, the lifting trolley 414 lifts and lowers the acrylic clamp 3 onto the scanner 1. Finally, the negative pressure suction cup 42 is controlled to detach the acrylic clamp 3 from the negative pressure suction cup 42, so that the acrylic clamp 3 with the screened sample is accurately and stably placed in the detection center.
[0024] In this embodiment, the design of the limiting groove 431 and the upper ring opening 432 of the assembly table 43 allows the two acrylic clamping plates 3 to be quickly aligned and stacked. The size of the assembly table 43 is designed to be the same as the size of the standardized sample cut from the sieve. The limiting groove 431 ensures that the warp and weft threads of the sieve are parallel to the edge of the clamping plate. The two acrylic clamping plates 3 are bound together with rubber rings, which prevents the acrylic clamping plates 3 from protruding too much twice, thus preventing the scanner 1 from closing. At the same time, the two acrylic clamping plates 3 keep the sieve clamped tightly. Furthermore, the assembly table 43 is provided with gripping grooves 433. The gripping grooves 433 are located on both sides of the assembly table 43. The bottom edge of the gripping grooves 433 is lower than the elastic support table 5. The designed gripping grooves 433 make it convenient for users to place the acrylic clamping plates 3 on the elastic support table 5.
[0025] To avoid the acrylic clamping plates 3 breaking due to excessive compression, this utility model provides elastic support platforms 5 at the four bottom corners of the limiting groove 431. Each elastic support platform 5 includes a guide post 51, a spring 52, and a support plate 53. The spring 52 is located inside the guide post 51, and the support plate 53 is located above the spring 52 and abuts against the rectangular clamping plate 31. The first acrylic clamping plate 3 is placed inside the limiting groove 431 and above the support plate 53. It consists of the guide post 51, the spring 52 with the guide post 51 inside, and the support plate 53 located at the top of the spring 52 and abutting against the first acrylic clamping plate 3 in the limiting groove 431. Initially, the first acrylic clamping plate 3, through the support plate 53, keeps the spring 52 in a slightly compressed pre-supported state to maintain a stable position. When the negative pressure suction cup 42 drives the first acrylic clamping plate 3... When the two acrylic clamping plates 3 are pressed down and attached to the first one, the excess downward pressure is transmitted to the support plate 53 through the second and first acrylic clamping plates 3 in sequence. After being pressed, the support plate 53 compresses the spring 52 inside the guide post 51. The spring 52 absorbs the excess pressure exceeding the clamping plate's bonding requirements through elastic deformation until the spring force of the spring 52 and the downward pressure of the negative pressure suction cup 42 reach equilibrium. The guide post 51 can also directionally limit the extension and retraction direction of the spring 52. The beneficial effects achieved by this are: the spring 52 absorbing excess pressure can fundamentally prevent the two acrylic clamping plates 3 from breaking due to excessive compression exceeding their compressive strength, ensuring processing yield; the directional limiting design of the guide post 51 and the surface contact design of the support plate 53 can ensure that the support plate 53 is horizontal and the bonding pressure is evenly distributed, improving the tight bonding accuracy of the two clamping plates and avoiding bonding gaps.
Claims
1. A novel screen detection system characterized by, The device includes a scanner, a detection computer, acrylic clamps, and a detection auxiliary device. The scanner transmits the scanned image to the detection computer, which is used to detect the diameter of the screen mesh. The detection auxiliary device includes a loading drive trolley, a negative pressure suction cup, and an assembly table. The loading drive trolley is arranged along the length of the scanner, and the assembly table is arranged along the width of the scanner. Two acrylic clamps are stacked on the assembly table, and the screen is placed between the two acrylic clamps and fixed by rubber rings. The negative pressure suction cup adsorbs the upper acrylic clamp, and the loading drive trolley moves the acrylic clamp to be placed in the scanning area of the scanner.
2. The novel screen detection system according to claim 1, characterized in that, The acrylic clamping plate includes a rectangular clamping plate and fixing ears located at both ends of the rectangular clamping plate.
3. The novel screen detection system according to claim 2, characterized in that, The assembly table has a limiting groove and upper ring openings at both ends of the limiting groove. The inner width and inner length of the limiting groove are equal to the width and length of the rectangular clamping plate, and the fixing ear extends out of the upper ring opening.
4. The novel screen detection system according to claim 3, characterized in that, The assembly table is also equipped with gripping slots on both sides.
5. The novel screen detection system according to claim 3, characterized in that, The four bottom corners of the limiting groove are provided with elastic support platforms. The elastic support platform includes a guide post, a spring and a support plate. The spring is located inside the guide post, and the support plate is located above the spring and abuts against the rectangular clamping plate.
6. The novel screen detection system according to claim 1, characterized in that, The loading drive trolley includes a moving guide rail arranged along the length direction of the scanner, a translation trolley on the moving guide rail, a lifting guide rail on the translation trolley, a lifting trolley on the lifting guide rail, and a bracket on the lifting trolley.
7. The novel screen detection system according to claim 6, characterized in that, The bracket is provided with a rotating platform, a rotary cylinder and a mounting plate at one end away from the lifting guide rail. The rotating platform is rotatably mounted on the bracket, the rotary cylinder is fixedly mounted on the bracket and connected to the rotating platform, and the mounting plate is fixedly mounted on the rotating platform.
8. The novel screen detection system according to claim 7, characterized in that, The negative pressure suction cups are symmetrically arranged at both ends of the mounting plate, and the rear end of the negative pressure suction cups at both ends is provided with an air source interface.