Ceramic tile detection device
By designing a tile inspection device that integrates a conveying unit, a size inspection unit, and a flatness inspection unit, the simultaneous inspection of tile size and flatness is achieved, solving the problem of insufficient functional integration in existing equipment and improving inspection accuracy and production efficiency.
Patent Information
- Application Number
- CN202520372402.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-05
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-03-05
AI Technical Summary
Existing tile testing equipment is insufficient in terms of streamlining production line length and integrating functions, making it difficult to simultaneously and efficiently test tile size and flatness.
A tile inspection device was designed, including a frame, a conveyor unit, a size inspection unit, and a flatness inspection unit. The width of the conveyor belt is greater than the width of the tile. An industrial camera and a light source unit are set above the conveyor belt. Image processing is performed by a controller to achieve simultaneous inspection of tile size and flatness.
It enables simultaneous inspection of tile size and flatness on a single device, reducing production costs, improving production efficiency and inspection accuracy, and adapting to tiles of different sizes and shapes.
Smart Images
Figure CN223954856U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of ceramic tile size detection, in particular to a ceramic tile detection device. BACKGROUND
[0002] At present, the detection scheme on the ceramic tile size detection machine is: a transmission belt narrower than the width of the ceramic tile is used, a light source is placed below the position where the four corners of the ceramic tile are suspended, a camera is placed above the light source, the brightness of the light source and the exposure of the camera are adjusted, a picture with a white background and a black ceramic tile can be obtained, the picture is subjected to binaryzation processing, and finally the size of the ceramic tile is obtained by calculating the pictures of the four corners.
[0003] However, the ceramic tile production line is now simplified, and the length of the production line is shortened to save space, so the ceramic tile equipment needs to have multiple functions and integrate as many functions as possible into one device. CONTENT OF THE UTILITY MODEL
[0004] Therefore, it is necessary to provide a ceramic tile detection device aiming at the problem that the ceramic tile production line is simplified and the length of the production line is shortened to save space.
[0005] A ceramic tile detection device comprises a rack, a conveying unit, a size detection unit, a flatness detection unit and a controller arranged on the rack, the size detection unit and the flatness detection unit are electrically connected with the controller.
[0006] The conveying unit comprises a driving assembly and a conveying belt, the driving assembly is used to drive the conveying belt to rotate, and the width of the conveying belt is greater than the width of the detected ceramic tile.
[0007] The size detection unit comprises an industrial camera and a light source unit, and the industrial camera and the light source unit are arranged above the conveying belt.
[0008] The ceramic tile detection device disclosed in the application comprises a rack, a conveying unit, a size detection unit, a flatness detection unit and a controller, the conveying unit comprises a driving assembly and a conveying belt, the width of the conveying belt is greater than the width of the detected ceramic tile, so that when the equipment needs to perform flatness detection at the same time, the ceramic tile has no suspended part, and the flatness detection is more accurate; the industrial camera and the light source unit in the size detection unit are arranged above the conveying belt, the industrial camera photographs the corner photos of the detected ceramic tile when the detected ceramic tile enters the size detection area, the corner photos are processed and calculated by the controller, the size of the detected ceramic tile is obtained, and the light source unit is arranged above the ceramic tile and faces downward, and is not easy to be contaminated. The conveying unit, the size detection unit and the flatness detection unit are matched, so that one device can perform size detection and flatness detection of the ceramic tile at the same time, the production cost is reduced, and the production efficiency is improved.
[0009] In one of the embodiments, the number of the industrial cameras is no less than four, the number of the light source units is consistent with the number of the industrial cameras, and at least one industrial camera and at least one light source unit are arranged above each of the four corners of the ceramic tile. The uniform light helps to improve the detection accuracy and ensure that the pictures of the four corners of the ceramic tile are clear.
[0010] In one of the embodiments, the size detection unit further comprises a mounting bracket arranged on the rack, and the industrial camera and the light source unit are arranged on the mounting bracket, and the industrial camera is movable relative to the conveying belt. The industrial camera is movable relative to the mounting bracket, so that the industrial camera can be adjusted in position according to the size of different batches of ceramic tiles. By adjusting the position of the industrial camera, it can be ensured that the four corners of the ceramic tile are in the image, avoiding cropping or omission, and adapting to ceramic tiles of different sizes and shapes.
[0011] In one of the embodiments, the mounting bracket is in the shape of a gantry, and the mounting bracket is provided with a first sliding groove and a second sliding groove, and the length direction of the first sliding groove and the second sliding groove is consistent with the width direction of the conveying belt. The industrial camera and the light source unit are respectively arranged on the first sliding groove and the second sliding groove through wheel shafts. The industrial camera and the light source unit are respectively arranged on the first sliding groove and the second sliding groove through wheel shafts, and the light source unit is movable relative to the mounting bracket, so that the position of the light source can be adjusted. The reflection and scattering of light on the surface of the ceramic tile can be optimized, different surface characteristics of the ceramic tile can be adapted, the shadow on the surface of the ceramic tile can be reduced or eliminated, and the image quality can be improved. Furthermore, the position movement of the industrial camera and the light source unit does not interfere with each other, and the flexibility of the ceramic tile detection device is improved.
[0012] In one of the embodiments, the number of the mounting brackets is two, the two mounting brackets are distributed at intervals, the number of the industrial cameras and the number of the light source units are both four, two industrial cameras and two light source units are arranged on each of the two mounting brackets, and the four industrial cameras are distributed in a rectangular shape.
[0013] In one of the embodiments, the light source unit comprises a light source body and a rotating support, the rotating support is rotatably arranged on the mounting support, the rotating support is rotatable relative to the mounting support in a first direction, and the light source body is rotatably arranged on the rotating support, and the light source body is rotatable relative to the rotating support in a second direction. By rotating the light source body relative to the rotating support, the angle of the light source can be adjusted, the reflection and scattering of light on the tile surface can be optimized, different tile surface characteristics can be adapted, the shadow on the tile surface can be reduced or eliminated, and the image quality can be improved.
[0014] In one of the embodiments, the brightness of the light source unit is adjustable. By adjusting the brightness of the light source unit, the light source unit can be adjusted according to the different ambient brightness and / or different surface reflection characteristics of the tile, to avoid overexposure or underexposure, enhance the edge contrast, and ensure that the edges are clearly visible.
[0015] In one of the embodiments, the controller is configured to mark the tile picture obtained by the industrial camera, wherein the background color is marked as black and the detection tile is marked as white. By marking the collected picture, the controller marks the conveying belt as black and the tile as white, which can simplify the image into a binary image, and the tile area (white) and the background area (black) are clearly distinguished, facilitating subsequent edge detection, contour extraction and other operations; the data amount of the binary image is much smaller than that of the grayscale or color image, the processing speed is faster, and it is more suitable for real-time detection in large-scale production of tiles.
[0016] In one of the embodiments, the flatness detection unit is configured to detect the flatness of the tile by one or a combination of a dial gauge, a laser triangulation, a 3D scanning, and a machine vision detection.
[0017] In one of the embodiments, the detection device further comprises a first opening sensor configured to detect the arrival of the tile at the size detection position and trigger the operation of the industrial camera.
[0018] In one of the embodiments, the detection device further comprises a second opening sensor configured to detect the arrival of the tile at the flatness detection position and trigger the operation of the flatness detection unit. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 FIG. 1 is one of the structural schematic diagrams of the tile detection device;
[0020] Figure 2 FIG. 2 is another structural schematic diagram of the tile detection device;
[0021] Figure 3This is the third schematic diagram of the tile testing device.
[0022] Figure 4 for Figure 3 Enlarged view of part A in the middle.
[0023] The correspondence between the reference numerals and the component names is as follows:
[0024] 10 racks;
[0025] 20 Conveying unit, 21 Drive assembly, 22 Conveyor belt;
[0026] 30 Dimension detection unit; 31 Industrial camera; 32 Light source unit; 321 Light source body; 322 Rotating bracket; 33 Mounting bracket; 301 First sliding groove; 302 Second sliding groove; 34 Axle. Detailed Implementation
[0027] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0028] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.
[0029] Some embodiments of the ceramic tile detection device of the present invention are described below with reference to the accompanying drawings.
[0030] like Figures 1 to 4 As shown, this embodiment discloses a tile testing device, including: a frame 10, and a conveying unit 20, a size detection unit 30, a flatness detection unit (not shown in the figure), and a controller (not shown in the figure) disposed on the frame 10. The size detection unit 30, the flatness detection unit, and the controller are electrically connected.
[0031] The conveying unit 20 includes a drive assembly 21 and a conveyor belt 22. The drive assembly 21 is used to drive the conveyor belt 22 to rotate. The width of the conveyor belt 22 is greater than the width of the detected tile.
[0032] The size detection unit 30 includes an industrial camera 31 and a light source unit 32, both of which are positioned above the conveyor belt 22.
[0033] The ceramic tile detection device disclosed in the application comprises a rack 10, a conveying unit 20, a size detection unit 30, a flatness detection unit and a controller. The conveying unit 20 comprises a driving assembly 21 and a conveying belt 22. The width of the conveying belt 22 is designed to be greater than the width of the detected ceramic tile, so that when the device needs to perform flatness detection at the same time, the ceramic tile has no overhanging part, and the flatness detection is more accurate. The industrial camera 31 and the light source unit 32 in the size detection unit 30 are both arranged above the conveying belt 22. When the detected ceramic tile enters the size detection area, the industrial camera 31 takes a photo of the corner of the detected ceramic tile. The controller processes and calculates the obtained corner photo to obtain the size of the detected ceramic tile. Moreover, the light source unit 32 is placed above the ceramic tile and faces downward, and is not easy to be contaminated. The application cooperates the conveying unit 20, the size detection unit 30 and the flatness detection unit, so that one device can simultaneously perform size detection and flatness detection of the ceramic tile, thereby reducing the production cost and improving the production efficiency.
[0034] The industrial camera 31 takes photos of the four corners of the ceramic tile respectively, obtains pictures of the four corners of the ceramic tile, and then processes the pictures of the four corners of the ceramic tile. There are various ways to process the pictures of the corners of the ceramic tile, including a segmentation model based on an artificial neural network, a binary algorithm, an image enhancement algorithm and the like. The purpose is to obtain a picture that can be used to calculate the position of the corner of the ceramic tile. For example, the segmentation model based on the artificial neural network. The training method of the segmentation model is to collect the taken corner photo, label the picture, mark the background (i.e. the conveying belt) as black, and mark the ceramic tile as white. The trained model is used to detect the four corners of the ceramic tile image. According to the detected corner position and the known scale factor, the size of the ceramic tile is calculated.
[0035] In addition, the flatness detection unit can detect the flatness of the ceramic tile. The flatness detection unit can detect the flatness of the ceramic tile by methods such as laser scanning and visual detection. For example, the flatness detection unit adopts the visual detection method. The industrial camera 31 takes an image of the surface of the ceramic tile. The flatness of the surface of the ceramic tile is analyzed by an image processing algorithm (such as edge detection and feature extraction). It should be noted that the flatness detection unit can also use optical interference method, mechanical contact method, ultrasonic detection method and flatness measuring instrument to detect the flatness, but it does not meet the production demand, budget and precision requirement of the ceramic tile production line.
[0036] As shown in Figure 2 In addition to the features of the above-mentioned embodiments, the present embodiment further limits that the number of industrial cameras 31 is not less than four, the number of light source units 32 is consistent with the number of industrial cameras 31, and at least one industrial camera 31 and at least one light source unit 32 are arranged above each of the four corners of the detected ceramic tile.
[0037] In the above embodiments, at least one industrial camera 31 and at least one light source unit are configured above the corner of the tile. Uniform light helps to improve detection accuracy and ensures that the images of the four corners of the tile are clearly visible.
[0038] like Figure 2 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the size detection unit 30 also includes a mounting bracket 33, which is disposed on the frame 10, and the industrial camera 31 and the light source unit 32 are disposed on the mounting bracket 33, and the industrial camera 31 can move relative to the conveyor belt 22.
[0039] In the above embodiments, the industrial camera 31 is further defined to be movable relative to the mounting bracket 33, so that the position of the industrial camera 31 can be adjusted according to the size of different batches of tiles. By adjusting the position of the industrial camera 31, it can be ensured that all four corners of the tile are in the image, avoiding cropping or omission, and adapting to tiles of different sizes and shapes.
[0040] like Figure 2 and Figure 4 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the mounting bracket 33 is in the shape of a gantry frame, and the mounting bracket 33 is provided with a first sliding groove 301 and a second sliding groove 302. The length direction of the first sliding groove 301 and the second sliding groove 302 is consistent with the width direction of the conveyor belt 22. The industrial camera 31 and the light source unit 32 are respectively slidably mounted on the first sliding groove 301 and the second sliding groove 302 through the wheel axle 34.
[0041] In the above embodiments, the industrial camera 31 and the light source unit 32 are further defined as being slidably mounted on the first sliding groove 301 and the second sliding groove 302 respectively via axle 34. The light source unit 32 can move relative to the mounting bracket 33, allowing the position of the light source to be adjusted. This optimizes the reflection and scattering of light on the tile surface, adapts to different tile surface characteristics, reduces or eliminates shadows on the tile surface, and improves image quality. Furthermore, the positional movements of the industrial camera 31 and the light source unit 32 do not interfere with each other, improving the flexibility of the tile detection device.
[0042] like Figure 2 , Figure 4 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the number of mounting brackets 33 is two, the two mounting brackets 33 are distributed at intervals, the number of industrial cameras 31 and light source units 32 is four, two industrial cameras 31 and two light source units 32 are installed on one mounting bracket 33, and the four industrial cameras 31 are distributed in a rectangular shape.
[0043] like Figure 4As shown, in addition to the features of the above embodiments, the present embodiment is further defined as: the light source unit 32 comprises a light source body 321 and a rotating support 322, the rotating support 322 is rotatably arranged on the mounting support 33, the rotating support 322 can rotate relative to the mounting support 33 in a first direction, and the light source body 321 is rotatably arranged on the rotating support 322, and the light source body 321 can rotate relative to the rotating support 322 in a second direction.
[0044] In the above embodiments, the light source body 321 is further defined as being rotatable relative to the rotating support 322, so that the angle of the light source can be adjusted, the reflection and scattering of light on the tile surface can be optimized, different tile surface characteristics can be adapted to, the shadow on the tile surface can be reduced or eliminated, and the image quality can be improved.
[0045] In addition to the features of the above embodiments, the present embodiment is further defined as: the brightness of the light source unit 32 is adjustable.
[0046] In the above embodiments, the brightness of the light source unit 32 is further defined as being adjustable, so that the light source unit 32 can be adjusted according to different environmental brightness and / or different surface reflection characteristics of the tile, to avoid overexposure or underexposure, enhance the edge contrast, and ensure that the edges are clearly visible.
[0047] As shown, Figure 2 In addition to the features of the above embodiments, the present embodiment is further defined as: the controller is configured to mark the tile pictures obtained by the industrial camera 31, wherein the background color is marked as black and the detection tile is marked as white.
[0048] In the above embodiments, the controller further defines the collected pictures as black for the conveying belt 22 and white for the tile, and through the above method, the image can be simplified into a binary image, and the tile area (white) and the background area (black) are clearly distinguished, which is convenient for subsequent edge detection, contour extraction and other operations; The data amount of the binary image is much smaller than that of the gray-scale or color image, and the processing speed is faster, which is more suitable for real-time detection in large-scale production of tiles.
[0049] In addition to the features of the above embodiments, the present embodiment is further defined as: the flatness detection unit is configured to detect the flatness of the tile by one or a combination of a dial gauge, a laser triangulation, a 3D scanning, and a machine vision detection.
[0050] In addition to the features of the above embodiments, the present embodiment is further defined as: the tile detection device further comprises a first opening sensor (not shown in the figure), which is configured to detect the arrival of the tile at the size detection position and trigger the industrial camera to work.
[0051] In addition to the features of the above-mentioned embodiments, the present embodiment is further defined as: further comprising a second opening sensor (not shown in the figure), the second opening sensor is configured to detect the tile reaching the flatness detection position trigger, and control the flatness detection unit to work.
[0052] Any combination of the technical features of the above embodiments can be made, in order to make the description simple, not all possible combinations of each technical feature in the above embodiments are described, however, as long as the combination of these technical features does not exist, it should be considered as the scope of the description.
[0053] The above-mentioned embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it should not be understood as the limitation of the scope of the application patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the application patent should be subject to the appended claims.
Claims
1. A ceramic tile testing device, characterized in that, It includes a frame (10), and a conveying unit (20), a size detection unit (30), a flatness detection unit and a controller disposed on the frame (10), wherein the size detection unit (30) and the flatness detection unit are electrically connected to the controller; The conveying unit (20) includes a drive assembly (21) and a conveyor belt (22). The drive assembly (21) is used to drive the conveyor belt (22) to rotate. The width of the conveyor belt (22) is greater than the width of the detected ceramic tile. The size detection unit (30) includes an industrial camera (31) and a light source unit (32), both of which are arranged above the conveyor belt (22).
2. The ceramic tile testing device according to claim 1, characterized in that, The number of industrial cameras (31) is no less than four, and the number of light source units (32) is consistent with the number of industrial cameras (31). At least one industrial camera (31) and at least one light source unit (32) are respectively arranged above the four corners of the detection tile.
3. The ceramic tile testing device according to claim 2, characterized in that, The size detection unit (30) also includes a mounting bracket (33), which is mounted on the frame (10). The industrial camera (31) and the light source unit (32) are mounted on the mounting bracket (33), and the industrial camera (31) can move relative to the conveyor belt (22).
4. The ceramic tile testing device according to claim 3, characterized in that, The mounting bracket (33) is gantry-shaped, and a first sliding groove (301) and a second sliding groove (302) are provided on the mounting bracket (33). The length direction of the first sliding groove (301) and the second sliding groove (302) is consistent with the width direction of the conveyor belt (22). The industrial camera (31) and the light source unit (32) are slidably mounted on the first sliding groove (301) and the second sliding groove (302) respectively via axle (34).
5. The ceramic tile testing device according to claim 4, characterized in that, There are two mounting brackets (33), which are spaced apart. There are four industrial cameras (31) and four light source units (32). Two industrial cameras (31) and two light source units (32) are installed on one mounting bracket (33). The four industrial cameras (31) are arranged in a rectangular shape.
6. The ceramic tile testing device according to any one of claims 3 to 5, characterized in that, The light source unit (32) includes a light source body (321) and a rotating bracket (322). The rotating bracket (322) is rotatably mounted on the mounting bracket (33). The rotating bracket (322) can rotate relative to the mounting bracket (33) in a first direction. The light source body (321) is rotatably mounted on the rotating bracket (322). The light source body (321) can rotate relative to the rotating bracket (322) in a second direction.
7. The ceramic tile testing device according to claim 1, characterized in that, The brightness of the light source unit (32) is adjustable.
8. The ceramic tile testing device according to claim 1, characterized in that, The controller is configured to mark the tile images acquired by the industrial camera (31), wherein the background color is marked as black and the detected tile is marked as white.
9. The ceramic tile testing device according to claim 1, characterized in that, The flatness detection unit is configured to detect the flatness of the tile using one or a combination of methods selected from dial indicator, laser triangulation, 3D scanning, and machine vision inspection.
10. The ceramic tile testing device according to claim 1, characterized in that, It also includes a first activation sensor, which is configured to detect when the tile reaches the size detection position and trigger the operation of the industrial camera (31); And / or, It also includes a second activation sensor, which is configured to detect when the tile reaches the flatness detection position and trigger the operation of the flatness detection unit.