Machine vision detection light source

Abstract

The invention relates to the technical field of light source structures, and discloses a machine vision detection light source. Comprising a shell, a light quantity detection unit, a laser generator, a sliding adjusting frame, an infrared light source assembly installed on one side of the sliding adjusting frame, an ultraviolet light source assembly installed on the other side of the sliding adjusting frame and a driving device used for driving the sliding adjusting frame to slide in the set direction. The shell is provided with a light outlet hole coaxial with the light outlet end of the laser generator, the light quantity detection unit is used for detecting the light quantity of light passing through the light outlet hole, and the light quantity detection unit is in control connection with the laser generator, the infrared light source assembly and the ultraviolet light source assembly so that the light quantity of the light passing through the light outlet hole can be kept constant; the sliding adjusting frame is provided with a first through hole, a second through hole and a third through hole which are parallel to one another and separated from one another. The machine vision detection light source provided by the invention can provide various different illumination environments, and the light emitting quantity of the light source is always kept consistent, so that a product can be conveniently and accurately detected.

Description

Technical Field

[0001] This invention relates to the field of light source structure technology, and in particular to a machine vision inspection light source. Background Technology

[0002] As society develops, people have increasingly higher requirements for the surface of products, thus necessitating the use of machine vision inspection to detect the surface or internal quality of products.

[0003] Existing visual inspection light sources can generally only emit specific light. If the product surface has multiple colors or the internal inspection of the product needs to be carried out under different lighting conditions, it cannot meet the actual inspection needs. The product needs to be inspected multiple times under different lighting conditions on multiple different inspection devices, which is cumbersome. Excessive transportation may lead to more defects on the surface and even inside the product, especially for LCD screens.

[0004] Therefore, it is necessary to design a machine vision inspection light source that can provide a variety of different lighting environments and maintain a consistent light output, so as to conveniently and accurately inspect products.

[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. Summary of the Invention

[0006] This invention provides a machine vision inspection light source that can provide a variety of different lighting environments, and the light output of the light source remains consistent, thereby enabling convenient and accurate product inspection.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A machine vision inspection light source includes a housing, a light intensity detection unit, a laser generator, a sliding adjustment frame, an infrared light source assembly mounted on one side of the sliding adjustment frame, an ultraviolet light source assembly mounted on the other side of the sliding adjustment frame, and a driving device for driving the sliding adjustment frame to slide along a set direction. The housing is provided with a light emission hole coaxial with the light emission end of the laser generator. The light intensity detection unit is used to detect the light intensity of light passing through the light emission hole. The light intensity detection unit controls the laser generator, the infrared light source assembly, and the ultraviolet light source assembly respectively to keep the light intensity emitted through the light emission hole constant. The sliding adjustment frame is provided with a first through hole, a second through hole and a third through hole that are parallel to each other and separated from each other. A first beam splitter that can reflect the light emitted by the infrared light source component toward the light output hole is installed in one end of the second through hole. A second beam splitter that can reflect the light emitted by the ultraviolet light source component toward the light output hole is installed in one end of the third through hole. The driving device is used to drive the sliding adjustment frame to slide so that the light-emitting end of the laser generator is aligned with the first through hole, the second through hole, or the third through hole. Optionally, one end of the second through hole forms an inclined first mounting groove, and the first beam splitter is mounted in the first mounting groove; One end of the third through hole forms a second mounting groove, and the second beam splitter is installed in the second mounting groove; The second through hole and the third through hole are respectively located on opposite sides of the first through hole.

[0008] Optionally, the machine vision inspection light source also includes a turntable and a rotation drive device; The turntable is fixedly connected to the drive shaft of the rotary drive device, and a plurality of mounting through holes are arranged in a circular array around the drive shaft. The mounting holes are used to install filters of different colors, and at least one of the mounting holes is either not equipped with a filter or is equipped with a completely transparent glass sheet.

[0009] Optionally, the light intensity detection unit is installed between the light output hole and the turntable.

[0010] Optionally, the housing is fixedly connected to a sliding rail, and the sliding adjustment bracket is slidably mounted on the sliding rail; A limit detection component is also fixedly connected to the laser generator, and the limit detection component is electrically connected to the driving device.

[0011] Optionally, heat sinks are installed at both the top and bottom of the laser generator; The housing is equipped with a first cooling fan for blowing air onto the laser generator, and a second cooling fan with downward airflow is provided at the bottom of the housing.

[0012] Optionally, the first through hole, the second through hole, and the third through hole are all circular holes.

[0013] Optionally, the light quantity detection unit includes a detection circuit board and a light sensing component mounted on the detection circuit board; The photosensitive components are arranged at least two intervals.

[0014] Optionally, the sliding adjustment bracket is further provided with a first vertical through hole and a second vertical through hole; The first vertical through hole is parallel to the second vertical through hole, the first vertical through hole connects to the second through hole, and the first vertical through hole is perpendicular to the second through hole; The second vertical through hole connects to the third through hole, and the second vertical through hole is perpendicular to the third through hole.

[0015] Optionally, the machine vision inspection light source also includes a light guide cable, which is connected to the light output hole.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The machine vision inspection light source provided by this invention emits light through a laser generator into the light-emitting hole of the housing. By adjusting the position of the sliding adjustment frame, the light emitted by the laser generator can pass through a first through hole, a second through hole, or a third through hole. Combined with the light emission effects of the infrared light source component and the ultraviolet light source component, three different light emission effects can be formed, which can well match the inspection needs of products, especially LCD screen products, and effectively reduce the possibility of product damage during transportation. It should also be noted that the light quantity detection unit is used to control the light emission power and whether the laser generator, infrared light source component, and ultraviolet light source component are turned on, which can keep the light quantity emitted through the light-emitting hole constant, which is significantly beneficial to improving the accuracy of inspection.

[0017] The present invention has other features and advantages, which 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 the invention. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a frontal view of the machine vision inspection light source provided in an embodiment of the present invention; Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure of the machine vision inspection light source along line AA; Figure 3 yes Figure 1 A schematic diagram of the cross-sectional structure of the machine vision inspection light source along the BB line; Figure 4 yes Figure 2 A magnified schematic diagram of the machine vision inspection light source at point A; Figure 5 This is a schematic diagram of the structure of the machine vision inspection light source provided in an embodiment of the present invention when the housing is hidden; Figure 6 This is a three-dimensional schematic diagram of the machine vision inspection light source provided in an embodiment of the present invention; Figure 7 This is a three-dimensional structural schematic diagram of the sliding adjustment frame provided in an embodiment of the present invention; Figure 8 This is a front view schematic diagram of the sliding adjustment frame provided in an embodiment of the present invention; Figure 9 This is a three-dimensional structural diagram of the sliding adjustment frame provided in an embodiment of the present invention from another viewpoint.

[0020] Reference numerals: 1. Housing; 101. Light emission hole; 2. Light intensity detection unit; 21. Detection circuit board; 22. Photosensitive component; 3. Laser generator; 4. Sliding adjustment frame; 401. First through hole; 402. Second through hole; 41. First beam splitter; 42. Second beam splitter; 403. Third through hole; 5. Infrared light source assembly; 6. Ultraviolet light source assembly; 7. Driving device; 81. Turntable; 82. Rotation driving device; 83. Filter; 91. Sliding track; 92. Limit detection component; 110. Heat sink; 120. First cooling fan; 130. Second cooling fan. Detailed Implementation

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] As understood 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.

[0028] 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.

[0029] 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.

[0030] In view of the aforementioned deficiencies in existing detection light sources, the applicant, based on years of extensive practical experience and professional knowledge in the design and manufacture of such products, and in conjunction with the application of theoretical principles, has actively conducted research and innovation in order to create a solution that overcomes the shortcomings of existing technologies and makes machine vision detection light sources more practical. Through continuous research, design, and repeated prototype production and improvements, this invention, which possesses genuine practical value, has finally been created.

[0031] Please refer to Figures 1 to 9 This invention provides a machine vision inspection light source, including a housing 1, a light intensity detection unit 2, a laser generator 3, a sliding adjustment frame 4, an infrared light source assembly 5 mounted on one side of the sliding adjustment frame 4, an ultraviolet light source assembly 6 mounted on the other side of the sliding adjustment frame 4, and a driving device 7 for driving the sliding adjustment frame 4 to slide along a set direction; the housing 1 is provided with a light emission hole 101 coaxial with the light emission end of the laser generator 3, the light intensity detection unit 2 is used to detect the light intensity of the light after passing through the light emission hole 101, and the light intensity detection unit 2 controls the laser generator 3, the infrared light source assembly 5 and the ultraviolet light source assembly 6 respectively to keep the light intensity emitted through the light emission hole 101 constant.

[0032] The sliding adjustment frame 4 is provided with a first through hole 401, a second through hole 402 and a third through hole 403 that are parallel to each other and separated from each other. A first beam splitter 41 is installed in one end of the second through hole 402. The first beam splitter 41 can reflect the light emitted by the infrared light source component 5 towards the light outlet 101. A second beam splitter 42 is installed in one end of the third through hole 403, which can reflect the light emitted by the ultraviolet light source component 6 towards the light outlet 101.

[0033] The driving device 7 is used to drive the sliding adjustment frame 4 to slide so that the light output end of the laser generator 3 is aligned with the first through hole 401, the second through hole 402 or the third through hole 403. In this embodiment, the machine vision inspection light source emits light through the laser generator 3 into the light emission hole 101 of the housing 1. By adjusting the position of the sliding adjustment bracket 4, the light emitted by the laser generator 3 can pass through the first through hole 401, the second through hole 402, or the third through hole 403. Combined with the light emission of the infrared light source assembly 5 and the ultraviolet light source assembly 6, three different light emission effects can be formed, which can well match the inspection needs of products, especially LCD screen products, and effectively reduce the possibility of product damage during transportation. It should also be noted that the light quantity detection unit 2 can be used to control the light emission power, on and off of the laser generator 3, the infrared light source assembly 5, and the ultraviolet light source assembly 6, so as to keep the light quantity emitted through the light emission hole 101 constant, which is significantly beneficial to improving the accuracy of inspection.

[0034] It should be further explained that when the driving device 7 drives the sliding adjustment frame 4 to slide to the first position, the laser outlet, the light emission hole 101, and the first through hole 401 of the laser generator 3 are coaxial; when the driving device 7 drives the sliding adjustment frame 4 to slide to the second position, the laser outlet, the light emission hole 101, and the second through hole 402 of the laser generator 3 are coaxial; and when the driving device 7 drives the sliding adjustment frame 4 to slide to the third position, the laser outlet, the light emission hole 101, and the third through hole 403 of the laser generator 3 are coaxial.

[0035] Optionally, one end of the second through hole 402 forms an inclined first mounting groove, in which the first beam splitter 41 is mounted; one end of the third through hole 403 forms a second mounting groove, in which the second beam splitter 42 is mounted; the second through hole 402 and the third through hole 403 are respectively located on opposite sides of the first through hole 401. It should be noted that the first mounting groove can provide a mounting and positioning effect, better positioning the first beam splitter 41, and the second mounting groove can better position the second beam splitter 42.

[0036] Optionally, the machine vision inspection light source also includes a turntable 81 and a rotary drive device 82; the turntable 81 is fixedly connected to the drive shaft of the rotary drive device 82, and a plurality of mounting through holes are arranged in a circular array around the drive shaft; the mounting through holes are used to install filters 83 of different colors, and at least one mounting through hole is either not equipped with a filter 83 or is equipped with a fully transparent glass plate. It should be further noted that when different colored filters 83 are facing the light emission hole 101, the illumination patterns formed by the machine vision inspection light source are significantly different. The machine vision inspection light source in this embodiment has a variety of different illumination patterns, which can effectively improve the scope of application and play a good inspection role for different products. Of course, when the light emission hole 101 is facing a mounting through hole that is not equipped with a filter 83 or is equipped with a fully transparent glass plate, the light is not dimmed and is laser light, ultraviolet light, or infrared light.

[0037] Optionally, the light intensity detection unit 2 is installed between the light outlet 101 and the turntable 81. The light intensity detection unit 2 directly detects the brightness of the light at the rear end, thereby ensuring that the amount of light emitted from the light outlet 101 is more consistent, providing a stable amount of light for the product, which is beneficial to improving the detection accuracy.

[0038] Optionally, the housing 1 is fixedly connected to a sliding rail 91, and the sliding adjustment frame 4 is slidably mounted on the sliding rail 91; a limit detection component 92 is also fixedly connected to the laser generator 3, and the limit detection component 92 is electrically connected to the drive device 7. Specifically, the limit detection component 92 enables the sliding adjustment frame 4 to accurately stop at the first position, the second position, or the third position.

[0039] Optionally, heat sinks 110 are installed at both the top and bottom of the laser generator 3; a first cooling fan 120 for blowing air onto the laser generator 3 is installed in the housing 1, and a second cooling fan 130 for downward airflow is provided at the bottom of the housing 1. The cooling airflow flows laterally into the housing 1, and then flows downward under the drive of the second cooling fan 130. The flow of the cooling airflow is L-shaped, which can achieve better cooling effect and prevent the cooling airflow from blowing towards the staff or the products.

[0040] Optionally, the first through hole 401, the second through hole 402, and the third through hole 403 are all circular holes. Circular holes allow more light to escape.

[0041] Optionally, the light intensity detection unit 2 includes a detection circuit board 21 and a light sensing component 22 mounted on the detection circuit board 21; at least two light sensing components 22 are spaced apart. Specifically, the light sensing component 22 senses and detects, thereby determining the light intensity, and adjusts the output power of the laser generator 3, the infrared light source assembly 5, and / or the ultraviolet light source assembly 6 based on the light intensity to ensure that the output light intensity remains constant.

[0042] Optionally, the sliding adjustment bracket 4 is further provided with a first vertical through hole and a second vertical through hole; the first vertical through hole is parallel to the second vertical through hole, the first vertical through hole connects to the second through hole 402, and the first vertical through hole is perpendicular to the second through hole 402; the second vertical through hole connects to the third through hole 403, and the second vertical through hole is perpendicular to the third through hole 403. The first vertical through hole allows infrared light to enter and be incident on the first beam splitter 41, and the second vertical through hole allows ultraviolet light to enter and be incident on the second beam splitter 42.

[0043] Optionally, the machine vision inspection light source also includes a light guide cable, which is connected to the light outlet 101.

[0044] 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. A machine vision inspection light source, characterized in that, The system includes a housing (1), a light intensity detection unit (2), a laser generator (3), a sliding adjustment frame (4), an infrared light source assembly (5) mounted on one side of the sliding adjustment frame (4), an ultraviolet light source assembly (6) mounted on the other side of the sliding adjustment frame (4), and a driving device (7) for driving the sliding adjustment frame (4) to slide in a set direction. The housing (1) is provided with a light emission hole (101) coaxial with the light emission end of the laser generator (3). The light intensity detection unit (2) is used to detect the light intensity of the light after passing through the light emission hole (101). The light intensity detection unit (2) controls the laser generator (3), the infrared light source assembly (5), and the ultraviolet light source assembly (6) respectively to keep the light intensity emitted through the light emission hole (101) constant. The sliding adjustment frame (4) is provided with a first through hole (401), a second through hole (402) and a third through hole (403) that are parallel to each other and separated from each other. A first beam splitter (41) that can reflect the light emitted by the infrared light source assembly (5) to the light output hole (101) is installed at one end of the second through hole (402). A second beam splitter (42) that can reflect the light emitted by the ultraviolet light source assembly (6) to one end of the third through hole (403) is installed. The driving device (7) is used to drive the sliding adjustment frame (4) to slide so that the light-emitting end of the laser generator (3) is aligned with the first through hole (401), the second through hole (402) or the third through hole (403).

2. The machine vision inspection light source according to claim 1, characterized in that, One end of the second through hole (402) forms an inclined first mounting groove, and the first beam splitter (41) is installed in the first mounting groove; One end of the third through hole (403) forms a second mounting groove, and the second beam splitter (42) is installed in the second mounting groove; The second through hole (402) and the third through hole (403) are respectively located on opposite sides of the first through hole (401).

3. The machine vision inspection light source according to claim 1, characterized in that, It also includes a turntable (81) and a rotary drive (82). The turntable (81) is fixedly connected to the drive shaft of the rotary drive device (82), and a number of mounting through holes are arranged in a circular array around the drive shaft. The mounting holes are used to install filters (83) of different colors, and at least one of the mounting holes is either not equipped with a filter (83) or is equipped with a completely transparent glass sheet.

4. The machine vision inspection light source according to claim 3, characterized in that, The light intensity detection unit (2) is installed between the light output hole (101) and the turntable (81).

5. The machine vision inspection light source according to claim 1, characterized in that, The housing (1) is fixedly connected to a sliding rail (91), and the sliding adjustment frame (4) is slidably mounted on the sliding rail (91); A limit detection component (92) is also fixedly connected to the laser generator (3), and the limit detection component (92) is electrically connected to the drive device (7).

6. The machine vision inspection light source according to claim 1, characterized in that, Heat sinks (110) are installed on both the top and bottom of the laser generator (3). The housing (1) is equipped with a first cooling fan (120) for blowing air to the laser generator (3), and a second cooling fan (130) for downward airflow is provided at the bottom of the housing (1).

7. The machine vision inspection light source according to claim 1, characterized in that, The first through hole (401), the second through hole (402) and the third through hole (403) are all circular holes.

8. The machine vision inspection light source according to claim 1, characterized in that, The light intensity detection unit (2) includes a detection circuit board (21) and a light sensing component (22) mounted on the detection circuit board (21). The photosensitive components (22) are arranged at least two at intervals.

9. The machine vision inspection light source according to claim 1, characterized in that, The sliding adjustment frame (4) is also provided with a first vertical through hole and a second vertical through hole; The first vertical through hole is parallel to the second vertical through hole, the first vertical through hole connects to the second through hole (402), and the first vertical through hole is perpendicular to the second through hole (402). The second vertical through hole connects to the third through hole (403), and the second vertical through hole is perpendicular to the third through hole (403).

10. The machine vision inspection light source according to claim 1, characterized in that, It also includes a light guide cable, which is connected to the light output hole (101).

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