CN217981219U

CN217981219U - Arc-shaped light source for detecting arc-shaped surface defects

Info

Publication number: CN217981219U
Application number: CN202221663902.XU
Authority: CN
Inventors: 邓俊广; 方梓城; 蒋移兵; 邓俊涛; 张挺
Original assignee: Dongguan Cogstek Automation Technology Co ltd
Current assignee: Dongguan Cogstek Automation Technology Co ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-12-06
Anticipated expiration: 2032-06-30

Abstract

The utility model discloses an arc light source for detecting cambered surface defect, it relates to the light source detection area, it is including bottom plate and the roof that is the arc structure, install between bottom plate and roof and connect the bent plate on bottom plate and the outer arc limit of roof, install between bottom plate and roof and connect the arc diffusion board on bottom plate and roof inner arc limit, bottom plate and roof parallel arrangement, install the LED circuit board that is located arc diffusion board one side in the accommodation space, LED circuit board and arc diffusion board are in the same centre of a circle, a plurality of installs the first fixed plate that is located LED circuit board one side in the accommodation space, a plurality of installs on first fixed plate and with LED circuit board electricity and signal connection's circuit logic board, circuit logic board control LED circuit board, in order to form a plurality of end to end connection luminous region in proper order, a plurality of luminous region is luminous in turn each other, the utility model provides a detection light source detects the arc object among the prior art, the less technical problem of defect characteristic contrast ratio.

Description

Arc-shaped light source for detecting arc surface defects

Technical Field

The utility model relates to a light source detection technology field especially relates to an arc light source for detecting cambered surface defect.

Background

The surface defect of arc product detects the degree of difficulty very big, because the surface of arc product is the arc, if adopt linear array light source, its luminous angle is single, can't draw even image. Therefore, at present, an arc-shaped light source is generally adopted, a light emitting area of the arc-shaped light source is arc-shaped, high-uniformity and high-brightness surface light can be emitted, and an arc-shaped object is completely surrounded, so that all directions of an arc-shaped product can be irradiated. Although the arc-shaped light source can obtain relatively uniform images, the arc-shaped light source has relatively high and comprehensive brightness, so that the defect characteristics of the arc-shaped object obtained by shooting have relatively low contrast, and some tiny defects are often covered by high-intensity light, so that the detection result is not accurate enough, and the expected detection effect cannot be achieved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the above-mentioned defect among the prior art, provide an arc light source for detecting cambered surface defect, when it detects the light source and detects the arc object among the solution prior art, the less technical problem of defect characteristic contrast ratio.

In order to realize the above-mentioned purpose, the utility model provides an arc light source for detecting cambered surface defect, including the same bottom plate and the roof that just are the arc structure of shape size, install between bottom plate and roof and connect the bent plate on bottom plate and roof outer arc limit, install between bottom plate and roof and connect the arc diffusion board on bottom plate and roof inner arc limit, bottom plate and roof parallel arrangement, bottom plate, roof, bent plate and arc diffusion board form the accommodation space, install in the accommodation space and lie in the LED circuit board of arc diffusion board one side, the LED circuit board is with the centre of a circle with the arc diffusion board, and a plurality of installs in the accommodation space and lie in the first fixed plate of LED circuit board one side, and a plurality of installs on first fixed plate and with LED circuit board electricity and signal connection's circuit logic board, circuit logic board control LED circuit board to form a plurality of light-emitting region of end to end connection in proper order, a plurality of luminous region is luminous in turn each other.

When the technical scheme is used, the object is placed behind an operation table, the arc-shaped light source is used for irradiating the object, then different light emitting areas on the LED circuit board are controlled by the circuit logic board to alternately emit light, when each different light emitting area emits light, an image is shot by the camera for the object, after the light emitting of each different light emitting area is finished, a plurality of different images are obtained, and the images respectively irradiated by the light emitting areas are overlapped through software, so that the complete and uniform detection image of the detected object can be obtained.

In the technical scheme, the first fixing plates are connected end to form an arc structure concentric with the LED circuit board, and the light emitting areas are matched with the first fixing plates.

Among the above-mentioned technical scheme, still including installing the PCB trigger plate in the accommodation space, PCB trigger plate and circuit logic board electricity and signal connection are convenient for control circuit logic board to the different light-emitting region of control is luminous.

Among the above-mentioned technical scheme, still including installing in the accommodation space and being used for installing the second fixed plate that PCB triggered the board, be convenient for install PCB and trigger the board.

Among the above-mentioned technical scheme, still including installing the PCB control panel in the accommodation space, PCB control panel and PCB trigger plate electricity and signal connection.

Among the above-mentioned technical scheme, still including installing the third fixed plate that is used for installing the PCB control panel in the accommodation space, be convenient for install the PCB control panel.

Among the above-mentioned technical scheme, still including installing the PCB panel on the roof, PCB panel and PCB control board electricity and signal connection.

Among the above-mentioned technical scheme, still include two and connect the side of bottom plate and roof respectively and set up the end plate between bottom plate and roof, form closed space at bottom plate, roof, bent plate, arc diffusion board and two end plates.

In the above technical scheme, the bottom plate and the top plate are both provided with first arc-shaped grooves for mounting the arc-shaped diffusion plate, and the first arc-shaped grooves are concentric with the inner arc edge.

In the technical scheme, the bottom plate and the top plate are provided with second arc-shaped grooves used for mounting the LED circuit board, and the second arc-shaped grooves and the inner arc edges are concentric.

Compared with the prior art, the beneficial effects of the utility model reside in that:

when the technical scheme is used, the LED circuit board is divided into a plurality of different light-emitting areas, and the different light-emitting areas are sequentially connected end to end and alternately emit light; when different light emitting areas emit light each time, shooting a measured object by using a camera, and superposing all shot images through software to form a complete and uniform detection image; because the technical scheme adopts the illumination mode of independent area illumination, the image afraid of shooting has different bright areas and different dark areas, and the defects on the product can be observed more easily in the transition area between the bright areas and the dark areas; and the regional relatively can be brighter of luminous region illumination, if there is notch, when bursting apart etc. tiny defect in this bright region, the defect of unevenness will refract light or reflect to adjacent dark area to can detect out this region and have the defect, this technical scheme can effectively improve the characteristic contrast of the tiny defect in object surface, and then can high-efficiently detect out the defect of arc object.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an arc light source for detecting a defect of an arc surface provided by the present invention;

fig. 2 is an exploded view of an arc light source for detecting arc surface defects according to the present invention;

fig. 3 is an exploded view of an arc light source with a curved plate removed for detecting arc surface defects according to the present invention;

fig. 4 is a schematic structural view of the LED circuit board, the light emitting region and the first fixing plate;

fig. 5 is a cross-sectional view of an arc light source for detecting arc surface defects according to the present invention.

The reference numbers of the figures are: 1. a base plate; 11. a first arc-shaped groove; 12. a second arc-shaped groove; 13. an end plate; 2. a top plate; 21. mounting holes; 22. a protective membrane; 3. bending a plate; 4. an arc-shaped diffusion plate; 5. an LED circuit board; 51. a light emitting region; 6. a first fixing plate; 7. a circuit logic board; 8. a PCB trigger board; 9. a second fixing plate; 10. a PCB control board; 20. a third fixing plate; 30. a PCB panel.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "secured" are to be construed broadly, and thus, for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B", including either A or B or both A and B. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

As shown in fig. 1 to 5, the present embodiment provides an arc-shaped light source for detecting arc-shaped defects, which includes a bottom plate 1, a top plate 2, a bending plate 3, an arc-shaped diffusion plate 4, an LED circuit board 5, a first fixing plate 6 and a circuit logic board 7. The bottom plate 1 and the top plate 2 are the same in shape and size and are of arc structures. The bent plate 3 is arranged between the bottom plate 1 and the top plate 2 and is connected with the outer arc edges of the bottom plate 1 and the top plate 2. The arc diffusion plate 4 is arranged between the bottom plate 1 and the top plate 2 and connected with the inner arc edges of the bottom plate 1 and the top plate 2, wherein the bottom plate 1 and the top plate 2 are arranged in parallel, and in addition, the bottom plate 1, the top plate 2, the bent plate 3 and the arc diffusion plate 4 form an accommodating space.

The LED circuit board 5 is arranged in the accommodating space and is positioned on one side of the arc diffusion plate 4, wherein the LED circuit board 5 is concentric with the arc diffusion plate 4. Therefore, the light emitted by the LED circuit board 5 can be uniformly diffused outwards through the arc-shaped diffusion plate 4, and the uniformity of the light source of the embodiment is improved. A plurality of first fixed plates 6 are arranged in the accommodating space and positioned at one side of the LED circuit board 5, and a plurality of circuit logic boards 7 are respectively arranged on the first fixed plates 6 and are electrically and signal-connected with the LED circuit board 5. The circuit logic board 7 controls the LED circuit board 5, so that a plurality of light emitting areas 51 connected end to end in sequence are formed on the LED circuit board 5, and the light emitting areas 51 emit light alternately. Preferably, the first fixing plates 6 are connected end to form an arc structure concentric with the LED circuit board 5, so that the light emitting areas 51 are adapted to the first fixing plates 6.

Specifically, after placing the object on the operation panel, shine the light source of this embodiment to the object, because the LED circuit board 5 and the arc diffusion plate 4 of this embodiment are arc structure for when the arc measured object is irradiated in the enclosure of arc light source, can obtain even image. Referring to fig. 4, next, the circuit logic board 7 controls different light emitting areas 51 on the LED circuit board 5 to alternately emit light, when each different light emitting area 51 emits light, a camera is used to take an image of the object, when each different light emitting area 51 emits light, a plurality of different images are obtained, and the images respectively irradiated by each light emitting area 51 are overlapped by software, so as to obtain a complete and uniform image of the object to be measured. The circuit logic board 7 controls different light emitting areas 51 on the LED circuit board 5 to be stroboscopic switched. Since the LED circuit board 5 is divided into a plurality of different light-emitting areas 51 in the present embodiment, images obtained by shooting the different light-emitting areas 51 will have different bright areas and different dark areas, and defects on the product will be more obvious and easier to observe in the transition area between the bright areas and the dark areas. Many other defects are irregular and tend to reflect or refract illuminating light to adjacent dark areas, such as: when one of the light emitting regions 51 emits light and irradiates a certain region of an object, if there are fine defects such as notches, cracks, etc. in the bright region, the uneven defects refract or reflect light to an adjacent dark region, so that the presence of defects in the region can be detected. The embodiment adopts the illumination mode of independent irradiation of the area, and can effectively improve the characteristic contrast of the tiny defects on the surface of the object.

The present embodiment also preferably includes a PCB panel 30, a PCB control board 10, and a PCB trigger board 8. The PCB panel 30 is mounted on the top plate 2 and electrically and signally connected to the PCB control board 10. The top plate 2 is provided with a mounting hole 21 for mounting the PCB panel 30, and a protective film 22 for sealing the mounting hole 21 is further provided on the surface of the mounting hole 21, and the protective film 22 can also protect the PCB panel 30, thereby prolonging the service life of the PCB panel 30. The PCB control board 10 is disposed in the accommodating space and electrically and signal-connected to the PCB trigger board 8. The accommodating space of the present embodiment is preferably provided with a third fixing plate 20, which is mainly used for mounting the PCB control board 10. The PCB trigger board 8 is arranged in the accommodating space and is electrically and signal-connected with the circuit logic board 7. The accommodating space of the embodiment is preferably provided with a second fixing plate 9, which is mainly used for mounting the PCB trigger plate 8.

Specifically, when the light source of this embodiment is used, a user can set which light-emitting region 51 emits light, the light-emitting time, the brightness, and the switching time of different light-emitting regions 51 through the PCB panel 30, then the PCB panel 30 transmits a signal to the PCB control board 10, the PCB control board 10 sends a trigger signal, the PCB trigger board 8 receives the trigger signal sent by the PCB control board 10, decodes the trigger signal, and then drives the corresponding circuit logic board 7 to operate, and the circuit logic board 7 drives the corresponding light-emitting region 51 on the LED circuit board 5 to emit light, so that different light-emitting regions 51 on the LED circuit board 5 can emit light alternately.

The present embodiment also preferably includes two end plates 13 disposed between the bottom plate 1 and the top plate 2 and connecting the sides of the bottom plate 1 and the top plate 2, wherein the bottom plate 1, the top plate 2, the curved plate 3, the arc-shaped diffusion plate 4, and the end plates 13 form a closed space. Like this, can airtight accommodation space, and then can protect LED circuit board 5, PCB control panel 10, PCB trigger plate 8 and circuit logic board 7 in the accommodation space, improve this technical scheme's life.

All be provided with the first arc recess 11 that is used for installing arc diffusion plate 4 on bottom plate 1 and the roof 2 of this embodiment, wherein, first arc recess 11 and inner arc limit are concentric, both can be convenient for like this install arc diffusion plate 4, still be convenient for make installation back arc diffusion plate 4 and inner arc limit be concentric. The bottom plate 1 and the top plate 2 are provided with second arc-shaped grooves 12 used for mounting the LED circuit board 5, wherein the second arc-shaped grooves 12 are concentric with the inner arc edge, so that the LED circuit board 5 is convenient to mount, and the LED circuit board 5 and the arc-shaped diffusion plate 4 are concentric to improve the light divergence uniformity of the technical scheme.

The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.

Claims

1. The utility model provides an arc light source for detecting cambered surface defect, includes bottom plate (1) and roof (2) that the shape size is the same and be the arc structure, installs between bottom plate (1) and roof (2) and connect bottom plate (1) and roof (2) outer arc limit bent plate (3), install between bottom plate (1) and roof (2) and connect bottom plate (1) and roof (2) inner arc limit arc diffusion board (4), bottom plate (1) and roof (2) parallel arrangement, bottom plate (1), roof (2), bent plate (3) and arc diffusion board (4) form the accommodation space, its characterized in that, still including installing LED circuit board (5) that are located arc diffusion board (4) one side in the accommodation space, LED circuit board (5) and arc diffusion board (4) are with the centre of a circle, a plurality of install in the accommodation space and be located the first fixed plate (6) of LED circuit board (5) one side, install on a plurality of first fixed plate (6) and with LED circuit board (5) electricity and signal connection's circuit logic board (7), luminous zone (51) are luminous in proper order to connect.

2. The arc-shaped light source for detecting arc surface defects according to claim 1, wherein a plurality of first fixing plates (6) are connected end to form an arc-shaped structure concentric with the LED circuit board (5), and a plurality of light-emitting areas (51) are adapted to the plurality of first fixing plates (6).

3. The arc-shaped light source for detecting the arc-shaped surface defect as claimed in claim 1, further comprising a PCB trigger board (8) installed in the accommodating space, wherein the PCB trigger board (8) is electrically and signally connected with the circuit logic board (7).

4. The arc-shaped light source for detecting the arc-shaped surface defect as claimed in claim 3, further comprising a second fixing plate (9) arranged in the accommodating space and used for installing the PCB trigger plate (8).

5. The arc-shaped light source for detecting the arc-shaped surface defect as claimed in claim 3, further comprising a PCB control board (10) installed in the accommodating space, wherein the PCB control board (10) is electrically and signal-connected with the PCB trigger board (8).

6. The arc-shaped light source for detecting the arc-shaped surface defect according to claim 5, further comprising a third fixing plate (20) arranged in the accommodating space and used for installing a PCB control board (10).

7. The arc-shaped light source for detecting the arc-shaped surface defect as claimed in claim 5, further comprising a PCB panel (30) arranged on the top plate (2), wherein the PCB panel (30) is electrically and signally connected with the PCB control board (10).

8. The arc-shaped light source for detecting arc surface defects is characterized by further comprising two end plates (13) which are respectively connected with the side edges of the bottom plate (1) and the top plate (2) and arranged between the bottom plate (1) and the top plate (2), wherein a closed space is formed among the bottom plate (1), the top plate (2), the bent plate (3), the arc-shaped diffusion plate (4) and the two end plates (13).

9. The arc-shaped light source for detecting arc-shaped surface defects according to claim 1, wherein a first arc-shaped groove (11) for installing the arc-shaped diffusion plate (4) is formed in each of the bottom plate (1) and the top plate (2), and the first arc-shaped groove (11) is concentric with the inner arc edge.

10. The arc-shaped light source for detecting arc-surface defects according to claim 1, wherein a second arc-shaped groove (12) for installing the LED circuit board (5) is formed in the bottom plate (1) and the top plate (2), and the second arc-shaped groove (12) is concentric with the inner arc edge.