Large-view one-key flash tester

Abstract

The utility model discloses a large-view one-key flash tester, which comprises a base, a vertical moving frame, a CCD (charge coupled device) camera and a second light source, the base is provided with a transparent detection plate, a stand column extends upwards in the rear direction of the base, the vertical moving frame is arranged at the position of the stand column, the vertical moving frame is provided with a bearing plate, and the bearing plate is provided with a first light source and a second light source. The vertical moving frame can drive the bearing plate to move vertically, the CCD camera is arranged on the bearing plate, a first light source is arranged below the CCD camera, the first light source can cover the upper portion of a product located on the detection plate with first light rays, and the second light source is arranged below the detection plate. In actual measurement, the first light source and the second light source are parallel light sources, and the light sources are turned on according to actual needs, for example, the first light source can test the surface flatness, flaws and the like of a product; when the second light source is turned on, the second light source can be used for testing whether the size or contour of the product meets preset requirements; therefore, testing of different products is realized.

Description

Technical Field

[0001] The utility model relates to the field of visual inspection equipment, in particular to a large-viewing-field one-button flash tester Background Art

[0002] Visual inspection is to use machines to replace human eyes to make measurements and judgments. Visual inspection refers to the process of converting the captured target into image signals through machine vision products (i.e. image capture devices, divided into CMOS and CCD), 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 equipment action on site based on the results of the judgment. It is a valuable mechanism for production, assembly or packaging. It has immeasurable value in detecting defects and preventing defective products from being delivered to consumers.

[0003] However, the existing detection devices are generally used in large-scale assembly lines, and are less used for the detection of single products. In addition, the existing single detection devices have the following problems: 1. They generally include a gantry, so the structure is large and the transportation is inconvenient; 2. The detected products are relatively single and cannot be applied to different products, mainly because different products require different light sources and detection distances. Utility Model Content

[0004] The main purpose of the utility model is to provide a one-button flash tester with a large field of view, aiming to improve the existing testing equipment, which has a simple structure, a small size, and can realize the testing of different products.

[0005] To achieve the above purpose, the utility model provides a large-viewing-field one-button flash tester, comprising:

[0006] A base, wherein the base is provided with a transparent detection plate, and a column is extended upward from the rear of the base;

[0007] A vertical movable frame, which is arranged at the position of the column, and is equipped with a supporting plate, and can drive the supporting plate to move vertically;

[0008] A CCD camera, wherein the CCD camera is disposed on the supporting plate, and a first light source is disposed below the CCD camera, and the first light source can cover a first light beam above the product located on the detection plate;

[0009] The second light source is disposed below the detection plate, and the second light source can apply a second light to the bottom of the product on the detection plate.

[0010] The technical solution of the utility model sets the whole device to be a frame with an open front end, so that the width and height of the whole device can be controlled within a reasonable range, which facilitates the transportation of the device; in actual measurement, the first light source and the second light source are both parallel light sources, and the light sources are turned on according to actual needs. For example, the first light source can test the surface flatness, defects, etc. of the product; when the second light source is turned on, it can be used to test whether the size or contour of the product meets the predetermined requirements; thereby realizing the testing of different products. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a cross-sectional view of the utility model;

[0012] Figure 2 This is a rear cross-sectional view of the hidden portion of the housing of the utility model;

[0013] Figure 3 This is a three-dimensional schematic diagram of the utility model after hiding part of the shell;

[0014] Figure 4 It is a three-dimensional schematic diagram of the utility model.

[0015] In the figure, 1 is a base, 11 is a detection plate, 12 is a column, 13 is a supporting plate, 2 is a CCD camera, 21 is a first light source, 22 is a second light source, 3 is a vertical moving frame, 31 is a guide rail, 32 is a slider, 33 is a rotating motor, 34 is a ball screw, 35 is a screw nut, 4 is a connecting part, 51 is a first lampshade, 52 is a second lampshade, 61 is a first step portion, 62 is a second step portion, 71 is a first step groove, and 72 is a second step groove. DETAILED DESCRIPTION

[0016] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0018] In addition, if there are descriptions involving "first" or "second" etc. in the embodiments of the utility model, the descriptions of "first" or "second" etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0019] like Figures 1 to 4 As shown, a large-viewing-field one-button flash tester comprises:

[0020] A base 1, wherein the base 1 is provided with a transparent detection plate 11, and a column 12 extends upward from the rear of the base 1;

[0021] A vertical movable frame 3, wherein the vertical movable frame 3 is arranged at the position of the column 12, and the vertical movable frame 3 is installed with a supporting plate 13, and the vertical movable frame 3 can drive the supporting plate 13 to move vertically;

[0022] A CCD camera 2, wherein the CCD camera 2 is disposed on the supporting plate 13, and a first light source 21 is disposed below the CCD camera 2, and the first light source can cover the first light above the product located on the detection plate 11;

[0023] The second light source 22 is disposed below the detection plate 11 . The second light source 22 can apply a second light to the bottom of the product on the detection plate 11 .

[0024] In the actual design, the device as a whole is set to be a frame with an open front end, so that the overall width and height of the device can be controlled within a reasonable range, which facilitates the transportation of the device; in the actual measurement, the first light source 21 and the second light source 22 are both parallel light sources, and the light sources are turned on according to actual needs. For example, the first light source 21 can test the surface flatness, defects, etc. of the product; when the second light source 22 is turned on, it can be used to test whether the size or contour of the product meets the predetermined requirements; thereby realizing the testing of different products.

[0025] In the actual test, the predetermined parameters are input into the computer, and then the test button is pressed, that is, the CCD camera 2 can obtain the corresponding parameters, and realize digital comparison with the parameters in the computer, so as to judge whether the product meets the requirements, and display whether it meets the requirements through the red and green display lights. In the actual design, the button can obtain multiple image data at one time, thereby improving the detection accuracy.

[0026] Specifically, the CCD camera 2 is provided with a double telecentric lens. The double telecentric lens is parallel light in and out, so the larger the shooting area, the larger the area of ​​parallel light entering, and therefore the larger the area of ​​the lens barrel, so the double telecentric lens is usually larger, and the larger the field of view, the larger the volume; because the telecentric lens only accepts parallel light and filters out almost all diffuse light sources, the image is relatively dark in the natural environment, so the use of parallel light sources can maximize the advantages of the double telecentric lens, making the edge of the object to be measured clear and stable, and effectively removing noise during the detection process.

[0027] In the embodiment of the utility model, the first light source 21 is an LED ring light source or a coaxial light source, wherein the LED ring light source can highlight the edge and height changes of the object being measured, highlighting the parts that are originally difficult to see, and is an ideal choice for edge detection, metal surface lettering and damage detection;

[0028] Coaxial light sources are mainly used to detect highly reflective flat objects, such as glass. They can highlight the unevenness of the object's surface and overcome the interference caused by surface reflection. They are mainly used to detect bumps, scratches, cracks and foreign objects on the flat and smooth surface of objects.

[0029] This ensures that the product surface image measurement and capture is more accurate.

[0030] Furthermore, the second light source 22 is a telecentric parallel light source, and the second light source 22 is a backlighting design, which has little interference with ambient light and ensures image stability; backlight diffusion reflects light to the side of the object, often making the object look smaller than it actually is, while parallel light can greatly reduce this reflection; better depth of field and telecentricity: the natural depth of field of the telecentric lens is increased, and its original telecentricity is improved.

[0031] In an embodiment of the utility model, the vertical movable frame 3 includes a guide rail 31 arranged on the front wall of the column 12, a slider 32 slidably installed on the guide rail 31, and a ball screw pair for driving the slider 32 to move. The support plate 13 is arranged on the slider 32, and two support plates 13 are arranged at intervals.

[0032] Specifically, the ball screw pair includes a rotating motor 33 arranged on the rear wall of the column 12, a ball screw 34 connected to the rotating motor 33, and a screw nut 35 matched with the ball screw 34. The slider 32 is provided with a connecting block 4 passing through the column 12, and the screw nut is arranged on the connecting block, thereby realizing the distance adjustment between the product or the first light source 21 and the CCD camera 2.

[0033] In the embodiment of the utility model, the first light source 21 is provided with a first lampshade 51, and the first lampshade 51 is gradually enlarged from top to bottom. The first lampshade 51 is provided with a first step portion 61 and a second step portion 62. The two supporting plates 13 are respectively provided with a first step hole 71 and a second step hole 72 matching with the first step portion and the second step portion, thereby facilitating the installation or replacement of the first light source 21.

[0034] Furthermore, the second light source 22 is provided with a second lampshade 52 .

[0035] In the embodiment of the present utility model, the detection plate 11 is made of glass or acrylic plate.

[0036] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A one-button flash tester with a large field of view, characterized in that: include: A base, wherein the base is provided with a transparent detection plate, and a column is extended upward from the rear of the base; A vertical movable frame, which is arranged at the position of the column, and is equipped with a supporting plate, and can drive the supporting plate to move vertically; A CCD camera, wherein the CCD camera is disposed on the supporting plate, and a first light source is disposed below the CCD camera, and the first light source can cover a first light beam above the product located on the detection plate; A second light source, the second light source is disposed below the detection plate, and the second light source can apply a second light to the bottom of the product on the detection plate; The CCD camera is provided with a double telecentric lens; The first light source is an LED ring light source or a coaxial light source; The second light source is a telecentric parallel light source; The first light source is provided with a first lampshade, the first lampshade is gradually enlarged in diameter from top to bottom, the first lampshade is provided with a first step portion and a second step portion, and the two supporting plates are respectively provided with a first step hole and a second step hole matching with the first step portion and the second step portion; The second light source is provided with a second lampshade; The detection plate is made of glass or acrylic plate.

2. The one-button flash tester with a large viewing angle as claimed in claim 1, characterized in that: The vertical moving frame includes a guide rail arranged on the front wall of the column, a slider slidably mounted on the guide rail, and a ball screw pair for driving the slider to move. The supporting plate is arranged on the slider, and two supporting plates are arranged at intervals.

3. The one-button flash tester with a large viewing angle as claimed in claim 2, characterized in that: The ball screw pair includes a rotary motor arranged on the rear wall of the column, a ball screw connected to the rotary motor and a screw nut matched with the ball screw. The slider is provided with a connecting block passing through the column, and the screw nut is arranged on the connecting block.

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