An aoi light source and inspection apparatus

Abstract

The utility model relates to machine vision detection technical field discloses an AOI light source and detection device, including circuit board, lamp pearl and the annular main body with detection through -hole, the annular main body has the top surface for positioning the bearing circuit board, and the bottom of annular main body is formed annular protruding around detection through -hole, the annular protruding has the inclined ring surface for positioning lamp pearl, the positioning jack that can pass through the pin of lamp pearl to connect circuit board is formed on the annular protruding, and one end orifice of positioning jack is located on the inclined ring surface, the AOI light source and detection device of the utility model can reduce the installation complexity, and promote the installation accuracy of lamp pearl.

Description

Technical Field

[0001] This utility model relates to the field of machine vision inspection technology, and in particular to an AOI light source and inspection device. Background Technology

[0002] A light source is an essential structure in machine vision. It emits light onto the workpiece so that the workpiece can reflect the light back to the machine to perform various measurements and judgments instead of the human eye.

[0003] Chinese utility model patent application number CN201821208487.2 discloses a novel high-brightness ring light source, including a ring-shaped top cover, an LED module, and a heat dissipation base. The ring-shaped top cover and the outer protruding edge of the heat dissipation base engage to form a protective shell. The LED module is housed within this protective shell. The LED module consists of multiple flexible substrates, on which an LED array is mounted. Several LED beads are mounted on the LED array and electrically connected to the flexible substrates. The LED module is bonded to the heat dissipation base via thermally conductive silicone. The top of the ring-shaped top cover is fixedly connected to a diffuser plate via screws. This novel high-brightness ring light source requires the installation of multiple flexible substrates to ensure uniform LED module placement, improving illumination uniformity and visual quality. However, the installation of multiple flexible substrates is complex and may lead to deviations in the LED bead placement.

[0004] Therefore, it is necessary to design an AOI light source and detection device to further reduce installation complexity and improve the installation accuracy of LED beads.

[0005] The above information is provided as background information only to aid in understanding this disclosure and does not constitute an assertion or admission that any of the above content can be used as prior art relative to this disclosure. Utility Model Content

[0006] This invention provides an AOI light source and detection device, which not only reduces installation complexity but also improves the installation accuracy of LED beads.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An AOI light source includes a circuit board, LEDs, and an annular body with detection through holes;

[0009] The annular body has a top surface for positioning and supporting the circuit board, and the bottom of the annular body forms an annular protrusion around the detection through hole, the annular protrusion having an inclined annular surface for positioning the lamp bead;

[0010] The annular protrusion has a positioning socket through which the pins of the LED bead can pass to connect to the circuit board, and one end of the positioning socket is located on the inclined annular surface.

[0011] Optionally, the annular surface of the annular protrusion near the detection through hole is the inclined annular surface, and at least six sets of positioning holes are provided on each ring of the annular protrusion.

[0012] Optionally, a plurality of annular protrusions are formed on one side of the bottom of the annular body, with adjacent annular protrusions spaced apart.

[0013] Each ring of the annular protrusion forms an inclined annular surface, and the angle between the inclined annular surface and the center line of the detection through hole is smaller the further away the inclined annular surface is from the detection through hole.

[0014] Optionally, the cross-section of the annular protrusion is triangular.

[0015] Optionally, the circuit board is in the shape of a ring-shaped flat plate;

[0016] The top surface of the annular body is a plane, the circuit board is attached to the top surface of the annular body, and the circuit board does not block the detection through hole.

[0017] Optionally, it also includes a fixed perimeter, in which the LED beads, the annular body, and the circuit board are all installed;

[0018] A positioning post is also installed in the fixed perimeter. One end of the positioning post is fixedly connected to the fixed perimeter, and the other end passes through the circuit board and is inserted into the annular body.

[0019] Optionally, a laser positioning module is installed on the fixed perimeter;

[0020] The laser positioning module includes a support base fixedly connected to the fixed perimeter, a mounting base rotatably connected to the support base, and a dot laser mounted on the mounting base.

[0021] The rotation angle of the mounting base is adjustable.

[0022] Optionally, it also includes female terminals;

[0023] The fixed perimeter is also provided with positioning mounting holes, and the female terminal is inserted into the positioning mounting holes and connected to the circuit board.

[0024] Optionally, the positioning post includes an extension post portion and an insertion positioning portion;

[0025] A stepped surface is formed between the extended column and the insertion positioning part for pressing on the circuit board; when the insertion positioning part is inserted into the annular body, the stepped surface presses on the circuit board.

[0026] A detection device includes an AOI light source as described in any of the preceding claims.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The AOI light source and detection device provided by this utility model has an annular main body between the circuit board and the LED bead. The annular main body fits against the bottom surface of the LED bead through an inclined annular surface on an annular protrusion, and the installation position of the LED bead is accurately positioned through a positioning hole. In this embodiment, there is no need to install multiple flexible substrates, which further simplifies the installation steps. Moreover, the LED bead can be accurately positioned through the inclined annular surface and the positioning hole, and the LED bead pins can be directly connected to the circuit board by passing through the positioning hole.

[0029] This invention has other features and advantages that will be apparent from or will be set forth in detail in the accompanying drawings and the following detailed description, which together serve to explain the particular principles of this invention. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is an exploded view of the AOI light source provided in this embodiment of the utility model;

[0032] Figure 2 This is a front view schematic diagram of the AOI light source provided in this embodiment of the utility model;

[0033] Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure of the AOI light source along line AA.

[0034] Reference numerals: 1. Circuit board; 2. LED bead; 3. Ring-shaped body; 301. Inclined ring surface; 302. Positioning insertion hole; 31. Detection through hole; 32. Ring-shaped protrusion; 4. Fixing perimeter; 5. Positioning post; 51. Extension post; 52. Insertion positioning part; 6. Laser positioning module; 61. Support base; 62. Mounting base; 63. Dot laser; 7. Female terminal. Detailed Implementation

[0035] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0036] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0037] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0038] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0039] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0040] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0041] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0042] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0043] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0044] Example 1

[0045] In view of the aforementioned defects in existing ring light sources, the applicant, based on years of rich practical experience and professional knowledge in the design and manufacture of such products, and in conjunction with the application of theoretical principles, actively conducted research and innovation in order to create a solution to the defects in the existing technology and make the AO I light source more practical. After continuous research, design, and repeated prototype production and improvement, this utility model with real practical value was finally created.

[0046] Please refer to Figures 1 to 3This utility model provides an AO I light source, including a circuit board 1, an LED bead 2, and an annular body 3 with a detection through hole 31. The annular body 3 has a top surface for positioning and supporting the circuit board 1, and an annular protrusion 32 is formed around the detection through hole 31 at the bottom of the annular body 3. The annular protrusion 32 has an inclined annular surface 301 for positioning the LED bead 2. A positioning insertion hole 302 is formed on the annular protrusion 32, through which the pin of the LED bead 2 can pass to connect to the circuit board 1, and one end of the positioning insertion hole 302 is located on the inclined annular surface 301.

[0047] In this embodiment, the AO I light source assembly steps are as follows:

[0048] ① Install the circuit board 1 on top of the annular body 3;

[0049] ② Make the pins of LED 2 pass through the positioning hole 302 through the ring body 3 to connect the circuit board 1, and make the LED 2 stick to the inclined ring surface 301.

[0050] In this embodiment, the AOI light source has an annular body 3 positioned between the circuit board 1 and the LED bead 2. The annular body 3 is attached to the bottom surface of the LED bead 2 via an inclined annular surface 301 on an annular protrusion 32, and the LED bead 2 is precisely positioned via a positioning socket 302. This embodiment eliminates the need for multiple flexible substrates, simplifying the installation process. Furthermore, the positioning accuracy is effectively improved by using the inclined annular surface 301 and the positioning socket 302 to position the LED bead 2.

[0051] Optionally, the cross-section of the annular protrusion 32 is triangular. In one case, the annular surface of the annular protrusion 32 near the detection through hole 31 is an inclined annular surface 301, in which case the AOI light source has the effect of focusing light inward; in another case, the annular surface of the inclined annular surface 301 away from the detection through hole 31 is an inclined annular surface 301, in which case the AOI light source has the effect of scattering light outward.

[0052] Preferably, the annular surface of the annular protrusion 32 near the detection through hole 31 is such that at least six sets of positioning holes 302 are provided on each annular protrusion 32. Each set of positioning holes 302 is used to position one LED bead 2. Generally, a set of positioning holes 302 includes two through holes. The diameter of the through holes is slightly larger than the pin of the LED bead 2.

[0053] It should also be noted that circuit board 1 is generally provided with a plug-in hole corresponding to positioning socket 302. The pins of LED 2 are inserted into the plug-in hole to realize the connection between circuit board 1 and LED 2.

[0054] Optionally, several annular protrusions 32 are formed on one side of the bottom of the annular body 3, with adjacent annular protrusions 32 spaced apart; each annular protrusion 32 forms an inclined annular surface 301, and the angle between the inclined annular surface 301 and the center line of the detection through hole 31 is smaller the further away the inclined annular surface 301 is from the detection through hole 31. In this embodiment, the angle of the light emitted by the lamp beads 2 in different rings is different, thereby improving the lighting effect and avoiding the occurrence of blind spots.

[0055] Optionally, the circuit board 1 is in the shape of an annular flat plate; the top surface of the annular body 3 is flat, the circuit board 1 is attached to the top surface of the annular body 3, and the circuit board 1 does not obstruct the detection through hole 31. The circuit board 1 is in the shape of an annular flat plate, and the top surface of the annular body 3 is flat, which further simplifies the installation of the circuit board 1 and eliminates the problem of the circuit board 1 not being able to fit the annular body 3.

[0056] Optionally, such as Figure 1 and Figure 3 As shown, the AOI light source also includes a fixed perimeter 4, in which the LED beads 2, the annular body 3, and the circuit board 1 are all installed. A positioning post 5 is also installed in the fixed perimeter 4; one end of the positioning post 5 is fixedly connected to the fixed perimeter 4, and the other end passes through the circuit board 1 and is inserted into the annular body 3. The positioning post 5 creates a cavity between the circuit board 1 and the fixed perimeter 4, facilitating heat dissipation and assembly of the female connector terminal 7, and preventing the female connector terminal 7 from protruding excessively from the top of the fixed perimeter 4.

[0057] Optionally, it also includes a female terminal 7; the fixed perimeter 4 is also provided with a positioning mounting hole, the female terminal 7 is inserted into the positioning mounting hole and connected to the circuit board 1.

[0058] Optionally, a laser positioning module 6 is installed on the fixed perimeter 4; the laser positioning module 6 includes a support base 61 fixedly connected to the fixed perimeter 4, a mounting base 62 rotatably connected to the support base 61, and a dot laser 63 mounted on the mounting base 62; the rotation angle of the mounting base 62 is adjustable.

[0059] Optionally, the positioning post 5 includes an extension post portion 51 and an insertion positioning portion 52; a stepped surface is formed between the extension post portion 51 and the insertion positioning portion 52 for pressing onto the circuit board 1; when the insertion positioning portion 52 is inserted into the annular body 3, the stepped surface presses onto the circuit board 1. In this embodiment, when the insertion positioning portion 52 is inserted into the annular body 3, the stepped surface presses onto the circuit board 1, thus fixing the circuit board 1 and simultaneously positioning it. In this embodiment, the circuit board 1 is provided with a through positioning hole that matches the extension post portion 51.

[0060] Example 2

[0061] This embodiment discloses a detection device, including an AOI light source as described in any of the preceding embodiments.

[0062] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. An AOI light source, characterized in that, It includes a circuit board (1), LED beads (2) and an annular body (3) with a detection through hole (31); The annular body (3) has a top surface for positioning and supporting the circuit board (1), and the bottom of the annular body (3) forms an annular protrusion (32) around the detection through hole (31), and the annular protrusion (32) has an inclined annular surface (301) for positioning the lamp bead (2). The annular protrusion (32) forms a positioning socket (302) through which the pins of the lamp bead (2) can pass to connect to the circuit board (1), and one end of the positioning socket (302) is located on the inclined annular surface (301).

2. The AOI light source according to claim 1, characterized in that, The annular surface of the annular protrusion (32) near the detection through hole (31) is the inclined annular surface (301), and at least six sets of positioning holes (302) are provided on each ring of the annular protrusion (32).

3. The AOI light source according to claim 2, characterized in that, The bottom side of the annular body (3) forms several annular protrusions (32), with adjacent annular protrusions (32) spaced apart. Each of the annular protrusions (32) forms an inclined annular surface (301), and the angle between the inclined annular surface (301) and the center line of the detection through hole (31) is smaller the further away the inclined annular surface (301) is from the detection through hole (31).

4. The AOI light source according to claim 1, characterized in that, The cross-section of the annular protrusion (32) is triangular.

5. The AOI light source according to claim 1, characterized in that, The circuit board (1) is in the shape of a ring-shaped flat plate; The top surface of the annular body (3) is a plane, the circuit board (1) is attached to the top surface of the annular body (3), and the circuit board (1) does not block the detection through hole (31).

6. The AOI light source according to claim 1, characterized in that, It also includes a fixed perimeter (4), in which the lamp beads (2), the annular body (3) and the circuit board (1) are all installed; A positioning post (5) is also installed in the fixed circumference (4). One end of the positioning post (5) is fixedly connected to the fixed circumference (4), and the other end passes through the circuit board (1) and is inserted into the annular body (3).

7. The AOI light source according to claim 6, characterized in that, A laser positioning module (6) is installed on the fixed perimeter (4); The laser positioning module (6) includes a support base (61) fixedly connected to the fixed perimeter (4), a mounting base (62) rotatably connected to the support base (61), and a dot laser (63) mounted on the mounting base (62); The rotation angle of the mounting base (62) is adjustable.

8. The AOI light source according to claim 6, characterized in that, It also includes the female terminal (7); The fixed perimeter (4) is also provided with positioning mounting holes, and the female terminal (7) is inserted into the positioning mounting holes and connected to the circuit board (1).

9. The AOI light source according to claim 6, characterized in that, The positioning post (5) includes an extension post (51) and an insertion positioning post (52); A stepped surface is formed between the extended column (51) and the insertion positioning part (52) for pressing on the circuit board (1); when the insertion positioning part (52) is inserted into the annular body (3), the stepped surface presses on the circuit board (1).

10. A detection device, characterized in that, It includes an AOI light source as described in any one of claims 1 to 9.

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