Optical detection device
By designing an optical detection device including standard blocks and measurement modules, the problem of verticality detection being affected by human factors is solved, more accurate and consistent detection results are achieved, and product detection quality is improved.
Patent Information
- Application Number
- CN202421459269.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-24
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-06-24
AI Technical Summary
Verticality detection is greatly affected by human factors, resulting in inconsistent testing standards and affecting product testing quality.
An optical detection device is designed, including a verticality detection component, and a standard block and a measurement module are provided in the assembly. The distance measurement camera and lighting unit measure the spacing between the workpiece and the standard block, and calculate the verticality of the workpiece.
Through optical detection devices, the influence of human factors is reduced, the accuracy and consistency of verticality detection is improved, and the quality of product detection is improved.
Smart Images
Figure CN222850016U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of optical detection, and more specifically to an optical detection device. Background Art
[0002] In the process of industrial production and manufacturing, it is often necessary to detect the verticality of workpieces (such as metal bars). At present, the most common verticality detection method is manual measurement, which is specifically performed by operators using relevant measuring equipment to measure and calculate. This method is greatly affected by human factors, resulting in poor consistency in the actual implementation standards of product testing, which is not conducive to improving product testing quality.
[0003] In summary, how to solve the problem that verticality detection is greatly affected by human factors has become a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content
[0004] In view of this, the utility model provides an optical detection device to solve the problem that verticality detection is greatly affected by human factors.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] An optical detection device includes a verticality detection component arranged at a detection station, wherein the verticality detection component includes:
[0007] A standard block is configured to be arranged on at least one of the left and right sides of the workpiece to be inspected, and a side of the standard block opposite to the workpiece to be inspected is configured as a standard vertical surface;
[0008] Two measuring modules arranged opposite to each other are respectively arranged on the upper and lower sides of the workpiece to be inspected, so as to respectively measure the distances between the preset points of the upper and lower edges of the workpiece to be inspected and the standard vertical plane of the same standard block;
[0009] Wherein, the measurement module comprises:
[0010] A rangefinder camera, comprising a camera host and a camera lens disposed on the camera host, wherein the camera lens is arranged opposite to the corresponding side of the detected workpiece to collect image information of the corresponding side of the detected workpiece, and the camera host is used to obtain a distance between a corresponding edge and a standard vertical plane of the same standard block according to the image information of the corresponding side of the detected workpiece;
[0011] The lighting unit is used to illuminate the corresponding side of the inspected workpiece so that the camera lens can collect the reflected light from the corresponding side of the inspected workpiece.
[0012] Optionally, the lighting unit is configured as a strip light source disposed on both sides of the ranging camera, the strip light source being tilted and oriented toward the inspected workpiece so that light emitted by the strip light source can be reflected into the camera lens through the inspected workpiece.
[0013] Optionally, the number of the standard blocks is two, and they are respectively arranged on the left and right sides of the inspected workpiece.
[0014] Optionally, the inspected workpiece is a metal rod with a rectangular cross-section.
[0015] Optionally, a thickness detection component is further included, which is arranged at the detection station, and the thickness detection component includes:
[0016] The two laser rangefinders are arranged opposite to each other and are configured to be arranged on the left and right sides of the workpiece to be inspected, respectively.
[0017] Optionally, the inspection station includes a first inspection station and a second inspection station, the verticality inspection component is arranged at the first inspection station, and the thickness inspection component is arranged at the second inspection station.
[0018] Optionally, the first inspection station and the second inspection station are arranged sequentially along the length direction of the inspected workpiece.
[0019] Optionally, the first inspection station and the second inspection station are configured as the same inspection station.
[0020] Optionally, it further comprises a conveying mechanism for carrying and horizontally conveying the inspected workpiece, the conveying mechanism comprising:
[0021] An introduction mechanism, disposed upstream of the inspection station and used for horizontally conveying the inspected workpiece to the inspection station;
[0022] The lead-out mechanism is arranged downstream of the inspection station and is used for horizontally transporting the inspected workpiece to the downstream equipment.
[0023] Optionally, the import mechanism and the export mechanism both include:
[0024] Two horizontal roller groups are arranged to clamp the workpiece to be inspected up and down, so as to clamp and horizontally transport the workpiece to be inspected;
[0025] The two deviation-correcting roller groups are arranged to clamp the workpiece to the left and right so as to correct the conveying direction of the workpiece to be detected.
[0026] Compared with the background technology introduction, in the actual application process, the above-mentioned optical detection device, since the two relatively arranged measuring modules of the verticality detection component are constructed to be arranged on the upper and lower sides of the workpiece to be detected, respectively, can then measure the distance A1 between the preset point on the left upper edge of the workpiece to be detected and the standard vertical plane of the standard block and the distance A2 between the preset point on the right upper edge and the standard vertical plane of the same standard block through the measuring module arranged above the workpiece to be detected, and measure the distance B1 between the preset point on the left lower edge of the workpiece to be detected and the standard vertical plane of the same standard block and the distance B2 between the preset point on the right lower edge and the standard vertical plane of the same standard block through the measuring module arranged below the workpiece to be detected. Then, the difference between A1 and B1 represents the verticality of the left side surface of the workpiece to be detected, and the difference between A2 and B2 represents the verticality of the right side surface of the workpiece to be detected. Compared with the traditional manual detection method, the above-mentioned optical detection device greatly reduces the influence of human factors, and the verticality detection is more convenient, intelligent and accurate. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0028] Figure 1 A schematic diagram of the first structure of a verticality detection assembly provided by an embodiment of the utility model (the parallel arrows in the diagram represent the direction of light);
[0029] Figure 2 A second structural schematic diagram of a verticality detection assembly provided by an embodiment of the utility model;
[0030] Figure 3 A schematic diagram of using a measuring module to measure the distance between the upper and lower edges of a workpiece to be inspected and the standard vertical surface of a standard block provided in an embodiment of the utility model;
[0031] Figure 4 A schematic diagram of the structure of a thickness detection assembly provided in an embodiment of the utility model;
[0032] Figure 5 A schematic diagram of a top view of a structure in which a first inspection station and a second inspection station provided in an embodiment of the utility model are arranged in sequence along the length direction of the inspected workpiece;
[0033] Figure 6 A schematic diagram of the main structure of the first inspection station and the second inspection station provided in the embodiment of the utility model, which are arranged in sequence along the length direction of the inspected workpiece;
[0034] Figure 7 The first inspection station and the second inspection station provided in the embodiment of the utility model are constructed as a schematic diagram of a top view of the same inspection station;
[0035] Figure 8 The first inspection station and the second inspection station provided in the embodiment of the utility model are constructed as a main structural schematic diagram of the same inspection station.
[0036] in, Figure 1-Figure 8 middle:
[0037] Verticality detection component 100, standard block 110, standard vertical surface 111, measurement module 120, ranging camera 121, camera host 1211, camera lens 1212, lighting unit 122, strip light source 1221;
[0038] Thickness detection component 200, laser rangefinder 210;
[0039] A workpiece to be inspected 300;
[0040] Inspection station 400, first inspection station 410, second inspection station 420;
[0041] The transport mechanism 500 , the introduction mechanism 510 , and the export mechanism 520 . DETAILED DESCRIPTION
[0042] The core of the utility model is to provide an optical detection device to solve the problem that verticality detection is greatly affected by human factors.
[0043] The following will be combined with the drawings in the embodiments of the utility model 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 in 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.
[0044] Reference Figure 1-Figure 3As shown, the utility model provides an optical detection device, including a verticality detection component 100 arranged at a detection station 400, the verticality detection component 100 includes a standard block 110 and two relatively arranged measuring modules 120, wherein the standard block 110 is configured to be arranged on at least one of the left and right sides of the workpiece 300 to be detected, and the side of the standard block 110 opposite to the workpiece 300 to be detected is configured as a standard vertical surface 111; the two relatively arranged measuring modules 120 are configured to be arranged on the upper and lower sides of the workpiece 300 to be detected, respectively, so as to respectively measure the distance between the preset points of the upper and lower edges of the workpiece 300 to be detected and the standard vertical surface 111 of the same standard block 110.
[0045] Among them, refer to Figure 1-Figure 3 The above-mentioned measuring module 120 may specifically include a ranging camera 121 and a lighting unit 122. The ranging camera 121 may specifically include a camera host 1211 and a camera lens 1212 arranged on the camera host 1211. The camera lens 1212 is arranged opposite to the corresponding side of the workpiece 300 to collect image information of the corresponding side of the workpiece 300. For example, the measuring module 120 located above the workpiece 300 has a camera host 1211 whose camera lens 1212 is arranged opposite to the top surface of the workpiece 300, thereby collecting the top surface image information of the workpiece 300 with a better field of view; similarly, the measuring module 120 located below the workpiece 300 has a camera host 1211 whose camera lens 1212 is arranged opposite to the bottom surface of the workpiece 300, thereby collecting the bottom surface image information of the workpiece 300 with a better field of view. The camera host 1211 of the measuring module 120 is mainly used to obtain the distance between the corresponding edge and the standard vertical plane 111 of the same standard block 110 according to the image information of the corresponding side of the workpiece 300 to be inspected. For example, the camera host 1211 of the measuring module 120 located on the upper side can obtain the aforementioned distances A1 and A2, and the camera host 1211 of the measuring module 120 located on the lower side can obtain the aforementioned distances B1 and B2. It should be noted here that the use of image distance measurement is a relatively mature existing technology, and its specific working principle is not described in more detail. In addition, the lighting unit 122 is mainly used to shine light on the corresponding side of the workpiece 300 to be inspected, so that the camera lens 1212 can collect the reflected light on the corresponding side of the workpiece 300 to be inspected, so as to make the imaging clearer. Specifically, the lighting unit 122 of the measuring module 120 located on the upper side is mainly used to shine light on the top surface of the workpiece 300 to be inspected, and the lighting unit 122 of the measuring module 120 located on the lower side is mainly used to shine light on the bottom surface of the workpiece 300 to be inspected.
[0046] The optical detection device, in actual application, refers to Figure 3Since the two oppositely arranged measuring modules 120 of the verticality detection assembly 100 are configured to be arranged at the upper and lower sides of the workpiece 300 to be detected, respectively, the distance A1 between a preset point on the left upper edge of the workpiece 300 to be detected (for example, the midpoint of the left upper edge) and the standard vertical surface 111 of the standard block 110 and the distance A2 between a preset point on the right upper edge (for example, the midpoint of the right upper edge) and the standard vertical surface 111 of the same standard block 110 can be measured by the measuring module 120 arranged above the workpiece 300 to be detected, and the distance A2 between a preset point on the right upper edge and the standard vertical surface 111 of the same standard block 110 can be measured by the measuring module 120 arranged below the workpiece 300 to be detected. The distance B1 between the preset point on the left lower edge of the workpiece 300 (such as the midpoint of the right lower edge) and the standard vertical plane 111 of the same standard block 110, and the distance B2 between the preset point on the right lower edge (such as the midpoint of the right lower edge) and the standard vertical plane 111 of the same standard block 110, then the difference between A1 and B1 represents the verticality of the left side surface of the inspected workpiece 300, and the difference between A2 and B2 represents the verticality of the right side surface of the inspected workpiece 300. Compared with the traditional manual detection method, the use of the above-mentioned optical detection device greatly reduces the influence of human factors, and the verticality detection is more convenient, intelligent and accurate.
[0047] It should be noted that the preset points of the left and right edges corresponding to the upper and lower edges are preferably taken at the same position. For example, the preset points of the upper and lower edges are taken in the form of midpoints on the corresponding edges. Of course, it can be understood that the above-mentioned method of setting the preset points is only an example of the embodiment of the utility model. In actual application, other points can also be selected as preset points. It should also be noted that the measuring module 12 located on the upper side of the workpiece 300 to be inspected and the measuring module 12 located on the lower side of the workpiece 300 to be inspected are preferably designed to be symmetrically arranged about the workpiece 300 to be inspected.
[0048] In addition, the verticality detection component 100 may also be equipped with a visual system, which is used to calculate the verticality C1 and C2 of the left and right sides of the detected workpiece according to the spacing information collected by the measurement module 120, and the calculation method is: C1 is the difference between A1 and B1, and C2 is the difference between A2 and B2. In addition, the verticality detection component 100 may also be equipped with a display module, through which the verticality C1 and C2 calculated by the visual system can be displayed to the user.
[0049] In some other specific embodiments, referring to Figure 1-Figure 3, the lighting unit 122 can be specifically configured as a strip light source 1221 arranged on both sides of the ranging camera 121, and the strip light source 1221 is tilted and faces the workpiece 300 to be inspected, so that the light emitted by the strip light source 1221 can be reflected into the camera lens 1212 through the workpiece 300 to be inspected. By designing the strip light source 1221 arranged on both sides of the ranging camera 121, the lighting unit 122 can save more space and better avoid blocking the field of view of the camera lens 1212 of the ranging camera 121 while meeting the lighting requirements; in addition, the lighting unit 122 can also be prevented from interfering with the laser rangefinder of the thickness detection assembly 200 mentioned below. Of course, it can be understood that the above-mentioned method of configuring the lighting unit 122 as the strip light source 1221 arranged on both sides is only an example of the embodiment of the utility model. In actual application, it can also be designed as other light source structures, such as the structure of a ring light source, etc., which is not further limited here.
[0050] In some specific implementation schemes, the number of the above-mentioned standard blocks 110 can be designed to be one, which is arranged on the left or right side of the workpiece 300 to be inspected; the number of standard blocks 110 can also be designed to be two, and they are respectively arranged on the left and right sides of the workpiece 300 to be inspected. The advantage of designing two standard blocks is that the spacing measurement can be performed using the standard blocks 110 on different sides, and then the corresponding measurement spacing results can be averaged to reduce the measurement error; or, when one of the standard blocks 110 is deformed or misplaced, resulting in inaccurate measurement, the other standard block 110 can be used for measurement.
[0051] It should be noted that the above-mentioned workpiece 300 to be inspected may specifically be a metal rod with a rectangular cross-section, or may be other workpieces having a verticality that needs to be measured, and no further specific limitation is made herein.
[0052] In some other specific embodiments, referring to Figure 4As shown, the above-mentioned optical detection device can also include a thickness detection component 200 arranged at the detection station 400, and the thickness detection component 200 can specifically include two relatively arranged laser rangefinders 210, and the two relatively arranged laser rangefinders 210 are constructed to be arranged on the left and right sides of the workpiece 300 to be detected, respectively. By using the laser rangefinder 210 on the left to direct the laser beam to the left side of the detected workpiece 300, the distance H1 from the laser rangefinder 210 on the left to the left side of the detected workpiece 300 can be measured, and the distance from the laser rangefinder 210 on the left to the left side of the detected workpiece 300 has a theoretical setting value H2. Similarly, by using the laser rangefinder 210 on the right to direct the laser beam to the right side of the detected workpiece 300, the distance H3 from the laser rangefinder 210 on the right to the right side of the detected workpiece 300 can be measured, and the distance from the laser rangefinder 210 on the right to the right side of the detected workpiece 300 has a theoretical setting value H4. The theoretical value of the thickness of the detected workpiece 300 is H0, and the thickness measurement value H of the detected workpiece 300 can be calculated as follows: H=(H1-H2)+H0+(H3-H4). The thickness dimension of the inspected workpiece 300 from the left side to the right side can be accurately measured in the above manner, and due to the use of a laser rangefinder, the measurement accuracy is higher and more accurate. Of course, it can be understood that the method of using a laser rangefinder 210 for distance measurement is only an example of an embodiment of the utility model. In actual application, other structures that can achieve distance measurement can also be used, and no more specific limitations are made here. It should be noted that the above-mentioned laser rangefinder 210 is preferably arranged in a symmetrical manner on the left and right sides of the inspected workpiece 300, and is preferably designed to be arranged directly opposite to the corresponding side of the inspected workpiece 300.
[0053] In some more specific embodiments, reference Figure 5-Figure 8 As shown, the above-mentioned detection station 400 may specifically include a first detection station 410 and a second detection station 420, the verticality detection component 100 is arranged at the first detection station 410, and the thickness detection component 200 is arranged at the second detection station 420. Figure 5 and Figure 6 As shown, the first inspection station 410 and the second inspection station 420 are arranged in sequence along the length direction of the workpiece 300 to be inspected. By designing the above structure, the arrangement requirements of the verticality inspection component 100 and the thickness inspection component 200 are lower, and the mutual interference or interference between the two can be avoided. Of course, it can also be designed as Figure 7 and Figure 8 In the structural form, the first detection station 410 and the second detection station 420 are constructed as the same detection station. By designing into this structural form, the overall volume of the optical detection device is smaller and the integration is higher.
[0054] In some more specific embodiments, reference Figure 5-Figure 8 The above-mentioned optical inspection device may also include a conveying mechanism 500 for carrying and horizontally conveying the inspected workpiece 300, the conveying mechanism 500 includes an import mechanism 510 and an export mechanism 520, wherein the import mechanism 510 is arranged upstream of the inspection station 400, and is used to horizontally convey the inspected workpiece 300 to the inspection station 400; the export mechanism 520 is arranged downstream of the inspection station 400, and is used to horizontally convey the inspected workpiece 300 to the downstream equipment; in addition, the import mechanism 510 and the export mechanism 520 may both include two horizontal roller groups and two deviation correction roller groups, the two horizontal roller groups are arranged to clamp the inspected workpiece 300 up and down, so as to clamp and horizontally convey the inspected workpiece 300; the two deviation correction roller groups are arranged to clamp the inspected workpiece 300 left and right, so as to correct the conveying direction of the inspected workpiece 300. By designing the above-mentioned conveying mechanism 500, the inspected workpiece 300 can be inspected in an assembly line manner, and the inspected workpiece 300 can be transported forward by the conveying structure 500 to inspect different positions in the length direction of the inspected workpiece 300 in sequence, so that the inspection is more comprehensive.
[0055] It should be noted here that, refer to Figure 1-Figure 8 The above-mentioned upper side, lower side, left side and right side are all defined based on the workpiece 300 to be inspected.
[0056] In addition, it should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.
[0057] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. The elements defined by the sentence "includes a..." do not exclude the existence of other identical elements in the process, method, commodity or device that includes the elements.
[0058] In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.
[0059] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.
[0060] Specific examples are used herein to illustrate the principles and implementation methods of the present invention, and the description of the above embodiments is only used to help understand the core idea of the present invention. Although the present application has been described with reference to the preferred embodiments, various improvements may be made thereto and components thereof may be replaced with equivalents without departing from the scope of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments may be combined in any manner. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
Claims
1. An optical detection device, characterized in that: The invention comprises a verticality detection component (100) arranged at a detection station (400), wherein the verticality detection component (100) comprises: A standard block (110) is configured to be arranged on at least one of the left and right sides of the workpiece (300) to be inspected, and a surface of the standard block (110) opposite to the workpiece (300) to be inspected is configured to be a standard vertical surface (111); Two measuring modules (120) arranged opposite to each other are configured to be arranged at upper and lower sides of the workpiece (300) to be inspected, respectively, so as to respectively measure the distances between the preset points of the upper and lower edges of the workpiece (300) to be inspected and the standard vertical surface (111) of the same standard block (110); Wherein, the measuring module (120) comprises: A distance measuring camera (121), comprising a camera host (1211) and a camera lens (1212) arranged on the camera host (1211), wherein the camera lens (1212) is arranged opposite to the corresponding side of the detected workpiece (300) so as to collect image information of the corresponding side of the detected workpiece (300), and the camera host (1211) is used to obtain the distance between the corresponding edge and the standard vertical surface (111) of the same standard block (110) according to the image information of the corresponding side of the detected workpiece (300); The lighting unit (122) is used to illuminate the corresponding side of the inspected workpiece (300) so that the camera lens (1212) can collect reflected light from the corresponding side of the inspected workpiece (300).
2. The optical detection device according to claim 1, characterized in that: The lighting unit (122) is configured as a strip light source (1221) arranged on both sides of the distance measuring camera (121); the strip light source (1221) is tilted and faces the workpiece (300) to be inspected, so that light emitted by the strip light source (1221) can be reflected into the camera lens (1212) through the workpiece (300) to be inspected.
3. The optical detection device according to claim 1, characterized in that: The number of the standard blocks (110) is two, and they are arranged on the left and right sides of the inspected workpiece (300) respectively.
4. The optical detection device according to claim 1, characterized in that: The workpiece (300) to be inspected is a metal rod with a rectangular cross section.
5. The optical detection device according to claim 1, characterized in that: It also includes a thickness detection component (200) disposed at the detection station (400), wherein the thickness detection component (200) includes: Two laser rangefinders (210) arranged opposite to each other are configured to be arranged respectively on the left and right sides of the workpiece (300) to be inspected.
6. The optical detection device according to claim 5, characterized in that: The inspection station (400) comprises a first inspection station (410) and a second inspection station (420), the verticality inspection component (100) is arranged at the first inspection station (410), and the thickness inspection component (200) is arranged at the second inspection station (420).
7. The optical detection device according to claim 6, characterized in that: The first inspection station (410) and the second inspection station (420) are arranged in sequence along the length direction of the inspected workpiece (300).
8. The optical detection device according to claim 6, characterized in that: The first inspection station (410) and the second inspection station (420) are constructed as the same inspection station.
9. The optical detection device according to any one of claims 1 to 8, characterized in that: It also includes a conveying mechanism (500) for carrying and horizontally conveying the workpiece (300) to be inspected, wherein the conveying mechanism (500) includes: An introduction mechanism (510) is disposed upstream of the inspection station (400) and is used to horizontally transport the inspected workpiece (300) to the inspection station (400); The export mechanism (520) is arranged downstream of the inspection station (400) and is used to horizontally transport the inspected workpiece (300) to downstream equipment.
10. The optical detection device according to claim 9, characterized in that: The import mechanism (510) and the export mechanism (520) both include: Two horizontal roller groups are arranged to clamp the workpiece (300) to be inspected up and down, so as to clamp and horizontally transport the workpiece (300) to be inspected; Two deviation-correcting roller groups are arranged to clamp the detected workpiece (300) on the left and right sides, so as to correct the conveying direction of the detected workpiece (300).