Ceramic tile flatness and flaw detection device
By designing a tile detection device including a conveyor belt, camera, detection components and motor, the problems of traditional detection methods being susceptible to ambient light and high equipment costs are solved, and high accuracy and low cost tile flatness detection is achieved.
Patent Information
- Application Number
- CN202510101461.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2025-04-25
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Traditional ceramic tile detection methods rely on manual or cameras, are susceptible to ambient light, and have high equipment costs, making it difficult to ensure the accuracy and consistency of the detection results.
A detection device including a conveyor belt, a camera, a detection component and a motor is designed. The detection component consists of an inner rod, an outer cylinder, a spring, a pressure plate, a pressure rod and a displacement sensor. The pressure rod is driven by the motor to move, and combined with the displacement sensor and a pressure sensor, mechanical detection of the flatness of the ceramic tile is achieved.
The device is not affected by ambient light, which improves the accuracy and consistency of the detection results, while reducing the cost of the detection equipment.
Smart Images
Figure CN119879822A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of tile detection, and in particular to a device for detecting tile flatness and defects. Background Art
[0002] With the rapid development of the construction industry, the market demand for high-quality building materials is increasing. As one of the important indoor decoration materials, the quality of ceramic tiles directly affects the final decoration effect and service life. Therefore, quality inspection during the production process of ceramic tiles becomes particularly important.
[0003] At present, the quality inspection of ceramic tiles mainly includes dimensional accuracy, color uniformity and surface integrity, among which surface flatness and defect detection are the most basic and critical quality indicators. Traditional ceramic tile inspection relies on manual visual inspection, which is not only inefficient but also easily affected by subjective factors, making it difficult to ensure the consistency and accuracy of the inspection results. Later, it evolved into the use of cameras for defect detection, which collects images of the ceramic tile surface through cameras and identifies whether there are defects through computer processing and analysis; lasers are used to detect flatness and use laser beams to scan the ceramic tile surface.
[0004] In actual production inspection, laser has requirements for ambient light when inspecting the flatness of tiles. Strong light environment will affect the laser reflectivity, thus affecting the inspection accuracy, and the inspection equipment has the defect of high cost. Summary of the invention
[0005] In order to reduce the impact of the detection environment on the accuracy of the detection equipment and reduce the cost of the detection equipment, the present application provides a tile flatness and defect detection device.
[0006] The present application provides a device for detecting flatness and defects of ceramic tiles, which adopts the following technical solutions: A device for detecting flatness and defects of ceramic tiles, comprising a detection platform, a conveyor belt and a camera are arranged on the detection platform, a base, a support frame, a motor and a detection component are arranged on the detection platform, the base is fixed on the detection platform, one end of the support frame is fixed on the base and the other end is cantilevered and extends above the conveyor belt, and the motor is arranged on the cantilevered end of the support frame to drive the detection component to move relative to the ceramic tile; The detection component includes an inner rod, an outer tube, a spring, a pressure plate, a pressure rod and a displacement sensor. The inner rod is vertically arranged and the bottom end thereof penetrates into the open end of the outer tube and is threadedly connected to the outer tube. The spring, the pressure plate and the displacement sensor are all located inside the outer tube. One end of the spring abuts against the end face of the bottom end of the inner rod, and the other end is fixedly connected to the pressure plate. The side wall of the pressure plate facing away from the spring abuts against the inner wall at the end of the outer tube. One end of the pressure rod is fixedly connected to the pressure plate, and the other end passes through the closed end of the outer tube and is used to abut against the surface of the tile. The displacement sensor is used to measure the moving distance of the pressure plate.
[0007] By adopting the above technical solution, the produced tiles are placed on the conveyor belt and pass under the detection component. The pressure rod abuts against the standard tile of the tile, and the motor is started. The motor drives the pressure rod to move. The pressure rod passes over the surface of the tile. The displacement sensor can be used to know whether the position of the pressure rod changes in the vertical direction during the movement, so as to judge whether the surface of the tile is flat. The setting of the spring and the pressure plate enables the pressure rod to always press against the surface of the tile. The entire device does not need to consider the factors of the surrounding light environment, which reduces the impact of the detection environment on the accuracy of the detection equipment and also reduces the cost of the detection equipment.
[0008] Optionally, a top pipe is rotatably provided on the support frame, and the rotating shaft coincides with the rotating rod of the motor, and the top pipe is located at the cantilevered end of the support frame; a positioning assembly used in conjunction with the motor is provided on the top pipe, and the positioning assembly is used to adjust the horizontal position of the detection assembly; The positioning assembly includes a rack and a gear, one end of the rack is fixedly connected to the top end of the inner rod, the rack is arranged perpendicular to the inner rod, the other end of the rack passes through the top pipe and is slidably arranged relative to the top pipe along the length direction of the top pipe, the rack is meshed with the gear, and the end of the rotating rod of the motor passes from the top of the top pipe to the inside of the top pipe and is fixedly connected to the gear.
[0009] By adopting the above technical solution, for tiles of different sizes, it is necessary to adjust the position of the detection component relative to the tiles, so that the moving path of the end of the pressure rod on the tiles meets the detection requirements. Start the motor, and the motor can adjust the position of the pressure rod relative to the tiles through the gears and racks. The operation is simple and convenient.
[0010] Optionally, the motor is slidably arranged on the top tube in a vertical direction; a first positioning assembly is arranged on the top tube, the first positioning assembly includes a first positioning block, a first positioning rod and a first elastic member, a first groove is opened on the inner wall of the bottom of the top tube, the first elastic member is vertically fixed in the first groove and the top is fixedly connected to the first positioning block, the bottom end of the first positioning block is inserted in the first groove and slidably arranged relative to the first groove, the top end of the first positioning block is used to abut against the gear, and the first positioning rod is vertically fixed on the first positioning block; when the gear and the rack are out of meshing state, the first positioning rod is inserted between the teeth of the rack itself.
[0011] By adopting the above technical solution, the position of the gear can be adjusted by adjusting the position of the motor, so that the gear and the rack are meshed, and the motor is started, and the position of the rack can be adjusted through the gear. When the rack position is adjusted, the position of the motor is adjusted to disengage the gear and the rack. At this time, the first elastic member pushes the first positioning block upward, and finally the first positioning rod is inserted between the teeth of the rack itself, forming a locking effect on the rack, and avoiding the random change of the rack position.
[0012] Optionally, the first positioning rod is made of a telescopic rod, and a plurality of the first positioning rods are arranged at intervals.
[0013] By adopting the above technical solution, after the rack position is adjusted, not all ends of the first positioning rods may be directly opposite the tooth gaps of the rack itself. By adopting the characteristic that the length of the telescopic rod can be adjusted by itself, the effect of always having the first positioning rod inserted in the tooth gap of the rack itself is achieved.
[0014] Optionally, a limit rod is fixed on the motor and a limit hole is opened on the outer wall of the top tube; when the gear is meshed with the rack, the end of the limit rod away from the motor is inserted into the limit hole; when the gear is disengaged from the rack, the end of the limit rod is disengaged from the limit hole.
[0015] By adopting the above technical solution, the position of the gear can be adjusted by adjusting the position of the motor, so that the gear and the rack are meshed. At this time, the end of the limit rod is inserted into the limit hole, and the motor and the jacking pipe form a linkage state. The motor is started, and the position of the rack can be adjusted through the gear. At the same time, it is also ensured that the jacking pipe will not rotate relative to the motor, and there is no need to rely on friction to keep the jacking pipe and the motor in a relatively stable position.
[0016] Optionally, a second positioning assembly is provided on the top tube, the second positioning assembly includes a second positioning block, a second positioning rod and a second elastic member, a second groove is provided on the top inner wall of the top tube, the second elastic member is vertically fixed in the second groove and the bottom is fixedly connected to the second positioning block, the top end of the second positioning block is inserted in the second groove and is slidably arranged relative to the second groove, the cross-section of the second positioning block is non-circular, the circumferential side wall of the second positioning block located in the second groove abuts against the inner wall of the second groove, the second positioning rod is vertically fixed on the second positioning block, a notch is provided on the gear for inserting the second positioning rod, the rotating rod of the motor passes through the second positioning block and is fixedly connected to the second positioning block; when the gear and the rack are out of meshing and the second positioning rod is inserted in the notch, the top end of the second positioning block is inserted in the second groove.
[0017] By adopting the above technical solution, when the rack position is adjusted, the motor continues to move upward, the gear and the rack are disengaged, the second positioning rod is inserted in the notch, and the top end of the second positioning block is inserted in the second groove. Since the cross-section of the second positioning block is non-circular, the circumferential side wall of the second positioning block located in the second groove abuts against the inner wall of the second groove, so the motor is started, the gear rotates and the jacking pipe is rotated through the second positioning rod and the second positioning block, so that the motor can not only adjust the position of the detection component relative to the jacking pipe, but also drive the jacking pipe to rotate relative to the support frame.
[0018] Optionally, the second positioning rod is a second positioning rod supported by a telescopic rod, and a plurality of the second positioning rods are arranged at intervals.
[0019] By adopting the above technical solution, when the gear approaches the second positioning rod, it cannot be guaranteed that the second positioning rod will be directly opposite the notch, so multiple second positioning rods are provided and the characteristics of the telescopic rod are utilized to achieve the effect that there is always a second positioning rod that can be inserted into the notch.
[0020] Optionally, a cylinder is provided on the support frame, a distance is provided between the top pipe and the support frame, the cylinder is vertically arranged, one end of the cylinder body is fixed on the support frame, and the piston end of the cylinder is fixed on the body of the motor.
[0021] By adopting the above technical solution, the cylinder realizes the vertical position movement of the motor.
[0022] Optionally, a pressure sensor is fixed to the end of the inner rod, the pressure sensor is located inside the outer tube, and one end of the spring away from the pressing sheet abuts against the pressure sensor.
[0023] By adopting the above technical solution, the pressure sensor can detect the pressure transmitted by the spring. During the use of the detection component, the change in the pressure value can be used to reflect whether the surface of the tile is flat, and the data of the displacement sensor can be verified from the pressure perspective. The two-way detection and mutual verification ensure the accuracy of the experiment. At the same time, the pressure sensor can detect the rebound force of the spring. When the spring is aged after long-term use, it can be discovered and replaced in time.
[0024] Optionally, a detection ball is provided at the end of the pressure rod away from the pressure sheet, and the detection ball is used to roll and abut against the surface of the tile.
[0025] By adopting the above technical solution, the setting of the detection ball plays a protective role on the surface of the tile, replacing the pressure rod to contact the surface of the tile, and reducing the phenomenon of scratches on the surface of the tile.
[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The detection component realizes the mechanical detection method of the flatness of the tile surface, which is no longer limited by the detection environment, especially the light environment, ensuring the accuracy of the detection results and reducing the cost of the detection equipment; 2. The motor cooperates with other structures in this application, which can adjust the position of the detection component relative to the jacking pipe and drive the jacking pipe to rotate relative to the support frame; 3. The pressure sensor can detect the pressure transmitted by the spring. During the use of the detection component, the change in pressure value can be used to reflect whether the surface of the tile is flat, and the data of the displacement sensor can be verified from the pressure perspective. The two-way detection and mutual verification ensure the accuracy of the experiment. At the same time, the pressure sensor can detect the rebound force of the spring. When the spring is aged after long-term use, it can be discovered and replaced in time. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application; Figure 2 It is a cross-sectional view of the local structure at the top pipe and the detection component; Figure 3 yes Figure 2 A partial enlarged schematic diagram of part A; Figure 4 yes Figure 2 A partial enlarged schematic diagram of part B.
[0028] In the figure, 1, detection table; 11, conveyor belt; 12, base; 13, support frame; 14, motor; 141, limit rod; 15, cylinder; 2, detection component; 21, inner rod; 22, outer cylinder; 23, spring; 24, pressing piece; 25, pressing rod; 26, displacement sensor; 3, jacking pipe; 31, first groove; 32, second groove; 33, limit hole; 4, adjustment component; 41, rack; 42, gear; 421, notch; 5, first positioning component; 51, first positioning block; 52, first positioning rod; 53, first elastic member; 6, second positioning component; 61, second positioning block; 62, second positioning rod; 63, second elastic member; 7, pressure sensor; 8, detection ball; 9, connecting rod. DETAILED DESCRIPTION
[0029] The following is combined with Figure 1-Figure 4 This application is described in further detail.
[0030] The embodiment of the present application discloses a device for detecting flatness and defects of ceramic tiles.
[0031] refer to Figure 1 A device for detecting flatness and defects of ceramic tiles comprises a detection platform 1, on which a conveyor belt 11 is arranged. After the ceramic tiles are produced, they are placed on the conveyor belt 11 for detection and transportation. A detection component 2 and a camera are arranged on the detection platform 1. The detection component 2 detects the flatness of the ceramic tiles, and the camera detects the defects of the ceramic tiles.
[0032] refer to Figure 1 and Figure 2The testing platform 1 is provided with a base 12, a support frame 13, a motor 14, a cylinder 15, a jacking pipe 3 and a testing assembly 2. The base 12 is fixed at the edge of the testing platform 1. The support frame 13 is in an inverted L shape. One end of the support frame 13 is fixedly connected to the base 12, and the other end is cantilevered and extends to the top of the conveyor belt 11. The jacking pipe 3 is located at the cantilevered end of the support frame 13. There is a distance between the jacking pipe 3 and the support frame 13. The motor 14 and the cylinder 15 are located between the jacking pipe 3 and the support frame 13. The cylinder 15 is vertically arranged, one end of the body of the cylinder 15 is fixedly connected to the support frame 13, the piston end of the cylinder 15 is fixedly connected to one end of the body of the motor 14, and the rotating rod of the motor 14 is slidably connected to the jacking pipe 3, and the sliding direction is along the vertical direction.
[0033] refer to Figure 2 , the jacking pipe 3 is rotatably connected to the support frame 13, and the center line of the rotation axis of the jacking pipe 3 and the support frame 13 coincides with the center line of the rotation rod of the motor 14. In this embodiment, a connecting rod 9 is provided between the jacking pipe 3 and the support frame 13, one end of the connecting rod 9 is slidably connected to the support frame 13, and the other end is slidably connected to the jacking pipe 3, and the sliding paths are all circular, so that the motor 14 drives the jacking pipe 3 to rotate relative to the support frame 13, and the positions of the jacking pipe 3 and the support frame 13 in the vertical direction remain unchanged.
[0034] refer to Figure 1 , Figure 2 and Figure 3 , the top pipe 3 is arranged horizontally. The detection assembly 2 includes an inner rod 21, an outer tube 22, a spring 23, a pressing plate 24, a pressing rod 25 and a displacement sensor 26. The inner rod 21 is arranged vertically and its bottom end penetrates into the opening end of the outer tube 22 and is threadedly connected to the outer tube 22. The spring 23, the pressing plate 24 and the displacement sensor 26 are all located in the outer tube 22. The outer tube 22 is also provided with a pressure sensor 7, which is fixed on the end face of the inner rod 21 penetrating into the inner part of the outer tube 22. One end of the spring 23 abuts against the pressure sensor 7, and the other end is fixedly connected to the pressing plate 24. The side wall of the pressing plate 24 facing away from the spring 23 is tightly abutted against the inner wall at the end of the outer tube 22. One end of the pressure rod 25 is fixedly connected to the pressure plate 24, and the other end passes through the closed end of the outer cylinder 22. A detection ball 8 is provided at the end of the pressure rod 25 located outside the outer cylinder 22. The detection ball 8 can realize 360° full-range rotation relative to the pressure rod 25, and the detection ball 8 rolls against the surface of the tile; the displacement sensor 26 is fixed on the inner wall of the outer cylinder 22 and is located in the middle of the outer cylinder 22.
[0035] refer to Figure 2 and Figure 4, a positioning assembly 4, a first positioning assembly 5 and a second positioning assembly 6 are arranged on the top tube 3. The positioning assembly 4 includes a gear 42 and a rack 41. The gear 42 is a cage-type gear 42. A notch 421 is provided on the gear 42 so that the gear 42 can be disengaged from the rack 41 in the vertical direction. The notch 421 is opened from the center of the gear 42 to the edge of the gear 42, and the open end of the notch 421 breaks the edge of the gear 42. The shape of the rack 41 is adapted to the gear 42. The rack 41 passes through the top tube 3. The rack 41 is slidably arranged on the top tube 3. The sliding direction of the rack 41 slides horizontally along the length direction of the top tube 3. The rack 41 is located in the middle area of the top tube 3. The rack 41 is arranged vertically to the inner rod 21, and one end of the rack 41 is fixedly connected to the top of the inner rod 21.
[0036] refer to Figure 2 and Figure 4 The top tube 3 is provided with a first groove 31 and a second groove 32. The first groove 31 is located at the bottom inner wall of the top tube 3, and the second groove 32 is located at the top inner wall of the top tube 3. The first positioning assembly 5 includes a first positioning block 51, a first positioning rod 52 and a first elastic member 53. The first elastic member 53 is vertically fixed in the first groove 31 and the top is fixedly connected to the first positioning block 51. The bottom end of the first positioning block 51 is inserted into the first groove 31 and is slidably arranged in the vertical direction relative to the first groove 31. The edge of one side of the top end of the first positioning block 51 is used to abut against the bottom surface of the gear 42. A plurality of first positioning rods 52 are provided. Adjacent first positioning rods 52 are arranged at intervals along the length direction of the rack 41. The first positioning rod 52 is vertically fixed on the first positioning block 51. The first positioning rod 52 is a first positioning rod 52 made of a telescopic rod.
[0037] refer to Figure 2 and Figure 4 The second positioning assembly 6 includes a second positioning block 61, a second positioning rod 62 and a second elastic member 63. The second elastic member 63 is vertically fixed in the second groove 32 and the bottom is fixedly connected to the second positioning block 61. The top of the second positioning block 61 is inserted in the second groove 32 and is slidably arranged relative to the second groove 32 in the vertical direction. The cross section of the second positioning block 61 is non-circular, and is rectangular in this example. The circumferential side wall of the second positioning block 61 located in the second groove 32 abuts against the inner wall of the second groove 32. A plurality of second positioning rods 62 are provided and distributed at intervals. The second positioning rods 62 are vertically fixed on the second positioning block 61. The rotating rod of the motor 14 passes through the second positioning block 61 and is fixedly connected to the second positioning block 61. All the second positioning rods 62 form a circle and the center of the circle is the position where the rotating rod of the motor 14 passes through the second positioning block 61. The second positioning rod 62 is located on the side of the second positioning block 61 facing the gear 42. The rotating rod of the motor 14 passes through the second positioning block 61 and is fixedly connected to the gear 42. The second positioning rod 62 is a second positioning rod 62 made of a telescopic rod.
[0038] refer to Figure 2 A limiting rod 141 is fixed on the motor 14 , and a limiting hole 33 is provided on the outer wall of the top pipe 3 , and the limiting hole 33 is arranged opposite to the limiting rod 141 .
[0039] refer to Figures 1 to 4 , start the cylinder 15, the cylinder 15 drives the motor 14 to move so as to adjust the position of the gear 42 relative to the rack 41. When the size of the tile changes, start the cylinder 15 to make the gear 42 mesh with the rack 41. At this time, the gear 42 pushes the first positioning block 51 into the first groove 31, start the motor 14, and the gear 42 drives the rack 41 to adjust its position in the horizontal direction. After the position of the rack 41 is adjusted, the cylinder 15 drives the motor 14 to move upward, the first elastic member 53 pushes the first positioning block 51 upward, the gear 42 and the rack 41 are out of meshing state, and the synchronous first positioning rod 52 is inserted into the tooth gap of the rack 41 itself, and the first fixed rod forms a limit for the rack 41. The cylinder 15 continues to drive the motor 14 to move upward, and the bottom end of the second positioning rod 62 is inserted into the corresponding notch 421 to form a limit with the gear 42. At the same time, the gear 42 pushes the second positioning block 61 to be inserted into the second groove 32. The motor 14 is started again, and the motor 14 drives the top pipe 3 to rotate relative to the support frame 13. That is, the rolling path of the detection ball 8 on the surface of the tile is circular, and the flatness of the tile is detected.
[0040] The implementation principle of a device for detecting flatness and defects of ceramic tiles in an embodiment of the present application is as follows: the produced ceramic tiles are placed on a conveyor belt 11 and pass under the detection assembly 2. The detection ball 8 abuts against the standard tile of the ceramic tile. The motor 14 is started, and the motor 14 drives the detection ball 8 to move. The displacement sensor 26 can be used to know whether the pressure rod 25 has a position change in the vertical direction during the movement of the detection ball 8, thereby judging whether the surface of the ceramic tile is flat. The setting of the spring 23 and the pressure plate 24 enables the pressure rod 25 to always be pressed against the surface of the ceramic tile. The camera detects defects in the ceramic tile. The present application reduces the impact of the detection environment on the accuracy of the detection equipment and also reduces the cost of the detection equipment.
[0041] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A device for detecting flatness and defects of ceramic tiles, comprising a detection platform (1), wherein a conveyor belt (11) and a camera are arranged on the detection platform (1), and wherein: The detection platform (1) is provided with a base (12), a support frame (13), a motor (14) and a detection component (2); the base (12) is fixed on the detection platform (1); one end of the support frame (13) is fixed on the base (12) and the other end is cantilevered and extends above the conveyor belt (11); the motor (14) is arranged on the cantilevered end of the support frame (13) and is used to drive the detection component (2) to move relative to the tile; The detection assembly (2) comprises an inner rod (21), an outer tube (22), a spring (23), a pressing piece (24), a pressing rod (25) and a displacement sensor (26). The inner rod (21) is arranged vertically and its bottom end penetrates into the open end of the outer tube (22) and is threadedly connected to the outer tube (22). The spring (23), the pressing piece (24) and the displacement sensor (26) are all located inside the outer tube (22). One end of the spring (23) abuts against the end surface of the bottom end of the inner rod (21), and the other end is fixedly connected to the pressing piece (24). The side wall of the pressing piece (24) facing away from the spring (23) abuts against the inner wall at the end of the outer tube (22). One end of the pressing rod (25) is fixedly connected to the pressing piece (24), and the other end passes through the closed end of the outer tube (22) and is used to abut against the surface of the tile. The displacement sensor (26) is used to measure the moving distance of the pressing piece (24).
2. A tile flatness and defect detection device according to claim 1, characterized in that: A jacking pipe (3) is rotatably arranged on the support frame (13), and the rotation axis coincides with the rotation rod of the motor (14), and the jacking pipe (3) is located at the cantilevered end of the support frame (13); a positioning assembly (4) used in conjunction with the motor (14) is arranged on the jacking pipe (3), and the positioning assembly (4) is used to adjust the horizontal position of the detection assembly (2); The positioning assembly (4) comprises a rack (41) and a gear (42), one end of the rack (41) is fixedly connected to the top end of the inner rod (21), the rack (41) is arranged perpendicular to the inner rod (21), the other end of the rack (41) passes through the top tube (3) and is slidably arranged relative to the top tube (3) along the length direction of the top tube (3), the rack (41) is meshed with the gear (42), and the end of the rotating rod of the motor (14) passes from the top of the top tube (3) to the inside of the top tube (3) and is fixedly connected to the gear (42).
3. A tile flatness and defect detection device according to claim 2, characterized in that: The motor (14) is slidably arranged on the top tube (3) along the vertical direction; a first positioning assembly (5) is arranged on the top tube (3), the first positioning assembly (5) comprising a first positioning block (51), a first positioning rod (52) and a first elastic member (53); a first groove (31) is provided on the inner wall of the bottom of the top tube (3); the first elastic member (53) is vertically fixed in the first groove (31) and the top is fixedly connected to the first positioning block (51); the bottom end of the first positioning block (51) is inserted into the first groove (31) and is slidably arranged relative to the first groove (31); the top end of the first positioning block (51) is used to abut against the gear (42); the first positioning rod (52) is vertically fixed on the first positioning block (51); when the gear (42) and the rack (41) are out of meshing state, the first positioning rod (52) is inserted between the teeth of the rack (41) itself.
4. A tile flatness and defect detection device according to claim 3, characterized in that: The first positioning rod (52) is a first positioning rod (52) made of a telescopic rod, and a plurality of the first positioning rods (52) are arranged at intervals.
5. A tile flatness and defect detection device according to claim 3, characterized in that: A limiting rod (141) is fixed on the motor (14), and a limiting hole (33) is provided on the outer wall of the top tube (3); when the gear (42) is meshed with the rack (41), the end of the limiting rod (141) away from the motor (14) is inserted into the limiting hole (33); when the gear (42) is out of meshing with the rack (41), the end of the limiting rod (141) is out of the limiting hole (33).
6. A tile flatness and defect detection device according to claim 3, characterized in that: The top tube (3) is provided with a second positioning assembly (6), the second positioning assembly (6) comprising a second positioning block (61), a second positioning rod (62) and a second elastic member (63); a second groove (32) is provided on the top inner wall of the top tube (3); the second elastic member (63) is vertically fixed in the second groove (32) and the bottom is fixedly connected to the second positioning block (61); the top end of the second positioning block (61) is inserted into the second groove (32) and is slidably arranged relative to the second groove (32); the cross section of the second positioning block (61) is non-circular; the second positioning block (61) ) a circumferential side wall located in the second groove (32) abuts against the inner wall of the second groove (32), the second positioning rod (62) is vertically fixed on the second positioning block (61), the gear (42) is provided with a notch (421) for inserting the second positioning rod (62), and the rotating rod of the motor (14) passes through the second positioning block (61) and is fixedly connected to the second positioning block (61); when the gear (42) and the rack (41) are out of meshing state and the second positioning rod (62) is inserted into the notch (421), the top end of the second positioning block (61) is inserted into the second groove (32).
7. A tile flatness and defect detection device according to claim 6, characterized in that: The second positioning rod (62) is a second positioning rod (62) supported by a telescopic rod, and a plurality of the second positioning rods (62) are arranged at intervals.
8. A tile flatness and defect detection device according to claim 3, characterized in that: A cylinder (15) is arranged on the support frame (13), a distance is arranged between the top pipe (3) and the support frame (13), the cylinder (15) is arranged vertically, one end of the cylinder (15) body is fixed on the support frame (13), and the piston end of the cylinder (15) is fixed on the body of the motor (14).
9. A tile flatness and defect detection device according to claim 1, characterized in that: A pressure sensor (7) is fixed to the end of the inner rod (21), the pressure sensor (7) is located inside the outer cylinder (22), and one end of the spring (23) away from the pressing sheet (24) abuts against the pressure sensor (7).
10. A tile flatness and defect detection device according to claim 1, characterized in that: A detection ball (8) is provided at the end of the pressure rod (25) away from the pressure sheet (24), and the detection ball (8) is used to roll and abut against the surface of the tile.