Ceramic wafer thickness 3D visual detection equipment

Abstract

The invention provides a ceramic wafer thickness 3D visual detection device, which comprises a mounting and fixing support frame which can be used for supporting, fixing and limiting the whole device; the equipment connection limiting plate is arranged on the front face of the installation fixing supporting frame, a horizontal sliding table is installed on the front face of the equipment connection limiting plate, and the horizontal sliding table can horizontally slide; and the number of the equipment mounting tables is two, and the two equipment mounting tables are both mounted on the front face of the horizontal sliding table. During use, the two visual detection parts which are opposite to each other are arranged, a to-be-detected product passes through the space between the two visual detection parts through the conveying belt, at the moment, the two visual detection parts conduct three-dimensional scanning on the upper face and the lower face of the to-be-detected product respectively, pictures with three-dimensional points are generated, and meanwhile the two pictures are spliced; and the thickness information of the to-be-detected product is obtained according to the spliced picture, so that the effect of conveniently detecting the thickness of the product is achieved.

Description

Technical Field

[0001] The present invention relates to the field of visual inspection technology, and in particular to a 3D visual inspection device for the thickness of a ceramic sheet. Background Art

[0002] Visual inspection is to use machines to replace human eyes to make measurements and judgments. Visual inspection refers to converting the captured target into image signals through machine vision products, transmitting them to a dedicated image processing system, and converting them into digital signals based on pixel distribution, brightness, color and other information; the image system performs various operations on these signals to extract the characteristics of the target, and then controls the operation of the equipment on site based on the judgment results.

[0003] When many products are tested for quality, the thickness of the product needs to be tested. This is because the thickness of the product will directly affect the quality of the product. For example, pottery pieces and other products are products that need to be tested for thickness.

[0004] Existing visual inspection equipment is mainly used to quickly detect product appearance defects, but cannot directly detect product thickness. It needs to be detected indirectly, which is relatively inconvenient to operate.

[0005] To this end, the present application proposes a 3D visual inspection device for the thickness of ceramic sheets, which detects the thickness of the product through visual inspection to improve the convenience of inspection. Summary of the invention

[0006] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a 3D visual inspection device for the thickness of ceramic sheets, so as to solve the problem in the prior art that the appearance inspection device mentioned is not convenient for inspecting the thickness of products.

[0007] To achieve the above objectives and other related objectives, the present invention provides a 3D visual inspection device for the thickness of a ceramic sheet, comprising:

[0008] Install a fixed support frame, which is used to support, fix and limit the entire device;

[0009] The equipment connection limit plate is arranged on the front of the mounting fixed support frame, and a horizontal sliding platform is installed on the front of the equipment connection limit plate, and the horizontal sliding platform can slide horizontally;

[0010] Equipment mounting platforms, the number of the equipment mounting platforms is two, the two equipment mounting platforms are both mounted on the front of the horizontal sliding platform, and the two equipment mounting platforms are symmetrically distributed up and down on the front of the horizontal sliding platform, and the distance between the two equipment mounting platforms is adjustable;

[0011] There are two visual inspection units, which are respectively installed on the front sides of two equipment mounting tables, and the inspection surfaces of the two visual inspection units are arranged opposite to each other. The product to be inspected can pass between the two visual inspection units. The visual inspection unit is used to collect information on the product to be inspected that passes through, and to splice the images collected by the two visual inspection units to obtain the thickness information of the product to be inspected.

[0012] Preferably, a horizontal slide groove penetrating the left side of the equipment connection limit plate is provided in the middle of the equipment connection limit plate, and the horizontal sliding platform is installed inside the horizontal slide groove and is limited by the horizontal slide groove.

[0013] Preferably, a horizontal adjustment limiter is provided at the mouth of the horizontal slide groove of the device connecting the limit plate, and a horizontal adjustment part is provided on the side of the horizontal sliding table facing the horizontal adjustment limiter. The horizontal adjustment limiter and the horizontal adjustment part cooperate to pull the horizontal sliding table to move horizontally.

[0014] Preferably, a horizontal guide rail is provided at the connection between the back side of the horizontal sliding platform and the horizontal slide groove of the equipment connection limit plate, and the horizontal guide rail is used to support the horizontal sliding platform.

[0015] Preferably, a vertical slide groove is provided on the front of the horizontal sliding platform, and a vertical sliding block is provided on the back of all the equipment mounting platforms, and the width and thickness of the vertical sliding block are adapted to the width and depth of the vertical slide groove.

[0016] Preferably, vertical adjustment limiters are provided at both upper and lower ends of the vertical slide groove of the horizontal sliding table, and vertical adjustment parts are provided on one side of the two equipment mounting tables facing the vertical adjustment limiters, and each of the vertical adjustment parts can pull the adjacent equipment mounting tables to move in the vertical direction.

[0017] Preferably, the opposing surfaces of the two visual detection parts are both provided with inclined grooves, and the camera lenses of the visual detection parts are arranged on the inclined surfaces of the grooves.

[0018] Preferably, the two visual detection units are both 3D laser line scan cameras, and the configurations of the two visual detection units are the same.

[0019] Preferably, both of the two visual detection units are connected to an external PC device, and the pictures taken by the two visual detection units carry 3D coordinate information.

[0020] Preferably, the upper and lower surfaces of the product to be inspected are equidistant from the camera lenses of the two visual inspection units.

[0021] As described above, the 3D visual inspection device for ceramic sheet thickness of the present invention has the following beneficial effects:

[0022] The present invention sets up two visual inspection parts that are opposite to each other, and passes the product to be inspected between the two visual inspection parts via a conveyor belt. At this time, the two visual inspection parts respectively perform three-dimensional scanning on the upper and lower surfaces of the product to be inspected and generate pictures with three-dimensional points. At the same time, the two pictures are spliced, and the thickness information of the product to be inspected is obtained according to the three-dimensional point cloud of the spliced ​​pictures, thereby achieving the effect of facilitating the detection of product thickness.

[0023] At the same time, a horizontal sliding table that can move horizontally is arranged on the front of the equipment connection limit plate, and two vertically movable equipment mounting tables are arranged on the front of the horizontal sliding table, and two mutually-facing visual inspection parts are installed on the two equipment mounting tables respectively. During use, the horizontal sliding table and the equipment mounting table can be adjusted respectively to adjust the position and spacing of the visual inspection parts, so that the equipment can adapt to different inspection lines and products to be inspected with different thicknesses and positions, thereby achieving the effect of improving adaptability and installation convenience.

[0024] Therefore, the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Shown is a schematic structural diagram of the present invention.

[0026] Figure 2 Shown is an exploded view of the present invention.

[0027] Component number description:

[0028] 1. Install the fixed support frame; 2. Equipment connection limit plate; 3. Horizontal sliding table; 4. Horizontal guide rail; 5. Horizontal adjustment limiter; 6. Horizontal adjustment unit; 7. Equipment installation table; 8. Vertical adjustment limiter; 9. Vertical adjustment unit; 10. Visual inspection unit; 11. Products to be inspected. DETAILED DESCRIPTION

[0029] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0030] See also Figure 1 to Figure 2. It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0031] like Figure 1-Figure 2 As shown, the present invention provides a 3D visual inspection device for the thickness of ceramic sheets, comprising: an installation fixed support frame 1, an equipment connection limit plate 2, an equipment installation platform 7 and a visual inspection unit 10. The installation fixed support frame 1 can be used to support, fix and limit the entire device. Specifically, the installation fixed support frame 1 is installed on or at the edge of the product conveyor line through the base at the bottom, and the visual inspection device is supported by the front of the installation fixed support frame 1. The products on the product conveyor line can be inspected in an interlaced manner with the visual inspection device in space. The equipment connection limit plate 2 is arranged on the front of the installation fixed support frame 1, and a horizontal sliding platform 3 is installed on the front of the equipment connection limit plate 2, and the horizontal sliding platform 3 can slide horizontally. The horizontal sliding platform 3 is arranged to slide horizontally, so that the horizontal position of the visual inspection unit 10 can be easily changed. To adapt to the position of the product 11 to be inspected, the convenience of visual inspection is improved. And it can effectively avoid detection errors caused by detection position deviation. There are two equipment mounting platforms 7, both of which are mounted on the front of the horizontal sliding platform 3, and the two equipment mounting platforms 7 are symmetrically distributed up and down on the front of the horizontal sliding platform 3, and the distance between the two equipment mounting platforms 7 is adjustable. After the horizontal position of the visual inspection part 10 is adjusted, the height of the two visual inspection parts 10 can be adjusted through the equipment mounting platform 7, and the product 11 to be inspected can be located at the center between the two visual inspection parts 10, so as to further improve the accuracy of the inspection.

[0032] There are two visual inspection units 10, which are respectively installed on the front of two equipment installation platforms 7, and the inspection surfaces of the two visual inspection units 10 are arranged oppositely, and the product to be inspected 11 can pass between the two visual inspection units 10. When the two visual inspection units 10 work at the same time, they can respectively shoot the upper and lower surfaces of the product to be inspected 11. The visual inspection unit 10 can collect information on the product to be inspected 11 that passes through. The information it obtains is such as: the three-dimensional coordinates of the product to be inspected 11, the picture of the edge of the product to be inspected 11, and the picture of the surrounding environment of the equipment. After shooting, the pictures on the upper and lower sides are spliced ​​to obtain the thickness information of the product to be inspected 11. By comparing the three-dimensional coordinates of the product to be inspected 11, the thickness of the product to be inspected 11 can be estimated, and the three-dimensional coordinate information of the product to be inspected 11 is verified according to the picture of the edge of the product to be inspected 11 and the picture of the surrounding environment of the equipment to obtain the accurate thickness coordinates of the product to be inspected 11. The specific principle is: when a batch of products to be inspected 11 are inspected, the parameters of the visual inspection unit 10 are unchanged, and the environment around the equipment is unchanged. Therefore, the values ​​of these two parameters are constant, and the thickness information of the product 11 to be inspected can be accurately obtained by measuring these two parameters. At the same time, by comparing this data with the three-dimensional data directly measured by the visual inspection unit 10 on the product 11 to be inspected, the thickness information of the product 11 to be inspected can be accurately obtained.

[0033] like Figure 1-Figure 2 As shown, in some embodiments, a horizontal slide groove is provided in the middle of the device connection limit plate 2 of the present invention and runs through the left side of the device connection limit plate 2. The horizontal sliding platform 3 is installed inside the horizontal slide groove and is limited by the horizontal slide groove. When the horizontal sliding platform 3 is installed and moved, the horizontal slide groove can effectively ensure that the horizontal sliding platform 3 will not deviate up and down, and will not move excessively to the right. This ensures that the visual inspection unit 10 can move horizontally to adapt to the product conveying line while maintaining stability.

[0034] like Figure 1-Figure 2 As shown, in some embodiments, a horizontal adjustment limiter 5 is provided at the mouth of the horizontal slide groove of the limit plate 2 of the device of the present invention, and a horizontal adjustment part 6 is provided on the side of the horizontal sliding table 3 facing the horizontal adjustment limiter 5. One end of the horizontal adjustment part 6 passes through the horizontal adjustment limiter 5 and extends to the inside of the horizontal sliding table 3 to be rotatably connected to the horizontal sliding table 3. The other end of the horizontal adjustment part 6 extends to the outside of the horizontal adjustment limiter 5, and is provided with a head end for facilitating the rotation and limiting the position of the horizontal adjustment part 6. The horizontal adjustment limiter 5 and the horizontal adjustment part 6 cooperate to pull the horizontal sliding table 3 to move horizontally. Specifically, the horizontal adjustment part 6 is rotated by rotating the head end of the horizontal adjustment part 6, and the horizontal sliding table 3 is driven to achieve horizontal movement under the action of the thread on the surface of the horizontal adjustment part 6.

[0035] like Figure 1-Figure 2As shown, in some embodiments, a horizontal guide rail 4 is provided at the connection between the back of the horizontal sliding platform 3 of the present invention and the horizontal slide groove of the equipment connection limit plate 2. The provided horizontal guide rail 4 can effectively reduce the friction between the horizontal sliding platform 3 and the horizontal slide groove of the equipment connection limit plate 2, so that the horizontal sliding platform 3 can be more flexibly adjusted. In addition, the horizontal guide rail 4 can support the horizontal sliding platform 3, so that the horizontal sliding platform 3 can maintain the stability of the installation and the uniqueness of the installation position.

[0036] like Figure 1-Figure 2 As shown, in some embodiments, a vertical slide groove is provided on the front of the horizontal sliding platform 3 of the present invention, and a vertical slider is provided on the back of all equipment mounting platforms 7. The installation position of the equipment mounting platform 7 can be limited by the cooperation of the vertical slide groove and the vertical slider. The width and thickness of the vertical slider are adapted to the width and depth of the vertical slide groove, so that the installation position of the equipment mounting platform 7 is unique, and the equipment mounting platform 7 can be prevented from being kept stable when being adjusted up and down.

[0037] In some embodiments, vertical adjustment limiters 8 are provided at both ends of the vertical slide groove of the horizontal sliding platform 3 of the present invention, and vertical adjustment parts 9 are provided on the sides of the two equipment mounting platforms 7 facing the vertical adjustment limiters 8. The structures and functions of the vertical adjustment limiters 8 and the vertical adjustment parts 9 are the same as those of the horizontal adjustment limiters 5 and the horizontal adjustment parts 6. Each vertical adjustment part 9 can pull the adjacent equipment mounting platform 7 to move in the vertical direction, so that the positions of the two equipment mounting platforms 7 can be adjusted separately. In addition, the visual inspection part 10 installed on the surface of the equipment mounting platform 7 can adapt to product conveyor lines of different heights, so that the product 11 to be inspected can always be between the two visual inspection parts 10.

[0038] like Figure 1 As shown, in some embodiments, the opposing surfaces of the two visual inspection units 10 of the present invention are both provided with inclined grooves, and the camera lenses of the visual inspection units 10 are arranged on the inclined surfaces of the grooves. When visual inspection is performed on the product 11 to be inspected, the visual inspection unit 10 with an angle can detect the edge of the product 11 to be inspected. By splicing the pictures of the upper and lower edges of the product 11 to be inspected into one picture, the thickness of the edge of the product 11 to be inspected can be obtained, and the thickness information of the product 11 to be inspected can be accurately obtained by combining the coordinate points collected by the visual inspection unit 10.

[0039] Specifically, the two visual inspection units 10 of the present invention are both 3D laser line scan cameras. The 3D laser line scan camera is composed of a laser transmitter, a receiver, a time counter, a motor-controlled rotatable filter, a control circuit board, a microcomputer, a CCD machine, and software. The data measured each time not only contains information of the X, Y, and Z points, but also includes R, G, and B color information. The position, area, and thickness of the product to be inspected 11 are determined by obtaining the information of the X, Y, and Z points, and combined with the R, G, and B color information to identify whether the product to be inspected 11 has defects. The two visual inspection units 10 have the same configuration, which can improve the convenience of debugging when debugging the equipment, and avoid detection deviations caused by different configurations of the two visual inspection units 10.

[0040] It should be noted that the two visual inspection units 10 of the present invention are both connected to an external PC device. During the inspection process, the visual inspection unit 10 can transmit the inspection information to a PC with stronger processing power for data analysis, storage and early warning, so as to improve the efficiency of inspection and data processing capabilities. And the pictures taken by the two visual inspection units 10 are all with 3D coordinate information. When re-inspecting the product, these pictures with 3D coordinate information can improve the efficiency of re-inspection. By directly comparing and analyzing the coordinate information of the same batch of products, the problems of the product can be intuitively known.

[0041] It is worth noting that the upper and lower surfaces of the product to be inspected 11 of the present invention are at equal distances from the camera lenses of the two visual inspection units 10. When inspecting the product to be inspected 11, the data obtained by the two visual inspection units 10 are symmetrical, which facilitates the analysis and calculation of the coordinate information of the product to be inspected 11. The calculation error caused by the different data parameters obtained by the two visual inspection units 10 is reduced.

[0042] The specific use process of the present invention is as follows:

[0043] The entire device is installed at the edge of the conveying line of the product 11 to be inspected by installing the fixed support frame 1, so that the visual inspection part 10 installed on the fixed support frame 1 faces the product 11 to be inspected;

[0044] The positions of the horizontal sliding table 3 and the equipment mounting table 7 are adjusted respectively so that the product 11 to be inspected can pass between the two visual inspection parts 10;

[0045] Place the test sample on the conveyor line between the two visual inspection parts 10, and then adjust the positions of the two visual inspection parts 10 by rotating the vertical adjustment parts 9 on the upper and lower sides, so that the distance between the test sample and the two visual inspection parts 10 is equal;

[0046] The product 11 to be inspected is formally transported through the conveyor line, and the product 11 to be inspected is briefly stopped at the head, middle and tail of the channel between the two visual inspection units 10, so that the visual inspection unit 10 takes a photo of the product 11 to obtain the coordinate information of the product 11 to be inspected;

[0047] After acquiring the information, the visual inspection unit 10 transmits the information to the PC device to store, count and organize the data information, thereby forming intuitive data tables and images to facilitate the operator to perform verification.

[0048] In summary, the 3D visual inspection equipment for the thickness of ceramic sheets of the present invention sets up two visual inspection parts 10 facing each other, and passes the product 11 to be inspected through the two visual inspection parts 10 via a conveyor belt. At this time, the two visual inspection parts 10 respectively perform three-dimensional scanning on the upper and lower surfaces of the product 11 to be inspected and generate pictures with three-dimensional points, and at the same time splice the two pictures, and obtain the thickness information of the product 11 to be inspected based on the three-dimensional point cloud of the spliced ​​pictures, thereby achieving the effect of facilitating the detection of product thickness.

[0049] At the same time, the present invention arranges a horizontally movable horizontal sliding table 3 on the front side of the equipment connection limit plate 2, and arranges two vertically movable equipment mounting tables 7 on the front side of the horizontal sliding table 3, and respectively mounts two mutually-facing visual inspection parts 10 via the two equipment mounting tables 7. During use, the horizontal sliding table 3 and the equipment mounting table 7 can be adjusted respectively to adjust the position and spacing of the visual inspection parts 10, so that the equipment can adapt to different inspection lines and products 11 to be inspected of different thicknesses and positions, thereby achieving the effect of improving adaptability and installation convenience.

[0050] Therefore, the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

[0051] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A 3D visual inspection device for ceramic sheet thickness, characterized in that: include: An installation fixing support frame (1) is used to support, fix and limit the entire device; A device connection limit plate (2), the device connection limit plate (2) being arranged on the front side of the mounting fixed support frame (1), a horizontal sliding platform (3) being installed on the front side of the device connection limit plate (2), and the horizontal sliding platform (3) being capable of horizontal sliding; Equipment mounting platforms (7), the number of the equipment mounting platforms (7) is two, the two equipment mounting platforms (7) are both mounted on the front of the horizontal sliding platform (3), and the two equipment mounting platforms (7) are symmetrically distributed up and down on the front of the horizontal sliding platform (3), and the distance between the two equipment mounting platforms (7) is adjustable; A visual inspection unit (10), wherein the number of the visual inspection units (10) is two, the two visual inspection units (10) are respectively mounted on the front sides of two equipment mounting platforms (7), and the inspection surfaces of the two visual inspection units (10) are arranged opposite to each other, and a product to be inspected (11) can pass between the two visual inspection units (10), and the visual inspection unit (10) is used to collect information on the product to be inspected (11) passing through, and to splice the images collected by the two visual inspection units (10) to obtain thickness information of the product to be inspected (11).

2. The 3D visual inspection device for ceramic sheet thickness according to claim 1, characterized in that: A horizontal slide groove is arranged in the middle of the equipment connection limit plate (2) and passes through the left side of the equipment connection limit plate (2). The horizontal sliding platform (3) is installed inside the horizontal slide groove and is limited by the horizontal slide groove.

3. The 3D visual inspection device for ceramic sheet thickness according to claim 2, characterized in that: A horizontal adjustment limiter (5) is provided at the mouth of the horizontal slide groove of the device connecting the limit plate (2), and a horizontal adjustment part (6) is provided on the side of the horizontal sliding platform (3) facing the horizontal adjustment limiter (5). The horizontal adjustment limiter (5) and the horizontal adjustment part (6) cooperate to pull the horizontal sliding platform (3) to move horizontally.

4. The 3D visual inspection device for ceramic sheet thickness according to claim 2, characterized in that: A horizontal guide rail (4) is provided at the connection between the back side of the horizontal sliding platform (3) and the horizontal slide groove of the equipment connection limit plate (2), and the horizontal guide rail (4) is used to support the horizontal sliding platform (3).

5. The 3D visual inspection device for ceramic sheet thickness according to claim 1, characterized in that: The front of the horizontal sliding platform (3) is provided with a vertical sliding groove, and the back of all the equipment mounting platforms (7) are provided with a vertical sliding block, and the width and thickness of the vertical sliding block are adapted to the width and depth of the vertical sliding groove.

6. The 3D visual inspection device for ceramic sheet thickness according to claim 5, characterized in that: The upper and lower ends of the vertical slide groove of the horizontal sliding platform (3) are both provided with vertical adjustment limiters (8), and the two equipment mounting platforms (7) are both provided with vertical adjustment parts (9) on the sides facing the vertical adjustment limiters (8), and each of the vertical adjustment parts (9) can pull the adjacent equipment mounting platform (7) to move in the vertical direction.

7. The 3D visual inspection device for ceramic sheet thickness according to claim 1, characterized in that: The opposing surfaces of the two visual detection parts (10) are both provided with inclined grooves, and the camera lenses of the visual detection parts (10) are arranged on the inclined surfaces of the grooves.

8. The 3D visual inspection device for ceramic sheet thickness according to any one of claims 1 to 7, characterized in that: The two visual detection units (10) are both 3D laser line scan cameras, and the two visual detection units (10) have the same configuration.

9. The 3D visual inspection device for ceramic sheet thickness according to claim 8, characterized in that: The two visual detection units (10) are both connected to an external PC device, and the pictures taken by the two visual detection units (10) both carry 3D coordinate information.

10. The 3D visual inspection device for ceramic sheet thickness according to claim 8, characterized in that: The upper and lower surfaces of the product to be inspected (11) are equidistant from the camera lenses of the two visual inspection units (10).

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