CN214374359U

CN214374359U - Polaroid direction adjusting device in visual detection

Info

Publication number: CN214374359U
Application number: CN202023326184.0U
Authority: CN
Inventors: 陈灵铭
Original assignee: Guangdong OPT Machine Vision Co Ltd
Current assignee: Guangdong OPT Machine Vision Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-10-08
Anticipated expiration: 2030-12-31

Abstract

The utility model belongs to the technical field of machine vision detection, concretely relates to polaroid direction adjusting device among visual detection, including installing frame and light source, the installing frame sets up in the play light zone of light source, and uncovered and spacing groove have been seted up to the installing frame, and the spacing groove sets up between the play light zone of uncovered and light source, is provided with the polaroid between the play light zone of uncovered and light source, and the polaroid rotates the cell wall that sets up in the spacing groove. The utility model discloses can freely adjust and can fix light source polaroid polarization texture direction, its stability is good, adjusts the flexibility ratio height, under the prerequisite in effectively utilizing compact space, can swiftly reach the most effective combination effect of camera lens polaroid and light source polaroid in the short time conveniently to the efficiency of detection has been improved effectively.

Description

Polaroid direction adjusting device in visual detection

Technical Field

The utility model belongs to the technical field of machine vision detects, concretely relates to polaroid direction adjusting device among visual detection.

Background

With the large background of industrial automation, machine vision demands are increasing. In some machine vision inspection applications, the phenomenon of light reflection of an irradiated object often occurs, which not only seriously affects the quality of an image, but also cannot ensure the quality and effect of feature recognition for detecting surface defects of a workpiece to be detected in the image. And the combination of the lens polaroid and the light source polaroid can effectively eliminate the phenomenon of light reflection.

However, the inventors have found that in order to obtain the best polarization effect for the lens polarizer and the source polarizer, the source polarizer and the lens polarizer often need to be adjusted to the position for multiple times at the same time, and the source polarizer is at a desired angle to achieve effective matching with the lens polarizer. However, since the installation space of the device reserved for the lens and the light source is often limited, and the lens and the camera are precise optical components, multiple movement adjustment is not recommended; meanwhile, if the light source polarizer and the lens polarizer are combined at an optimal angle by rotating the light source, the light source is usually required to be moved and disassembled many times, which not only results in long detection time and low efficiency, but also makes it difficult to adjust the light source polarizer to a proper position at one time. Therefore, a new polarizer orientation adjustment device is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: aiming at the defects of the prior art, the polarizer direction adjusting device in visual detection is provided, has compact structure and stable and reliable operation, and has the effects of small occupied space, flexible adjustment, convenient installation, real-time fixation, detection time saving and detection efficiency improvement.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the polaroid direction adjusting device in the visual inspection comprises a mounting frame and a light source, wherein the mounting frame is arranged in a light outlet area of the light source, an opening and a limiting groove are formed in the mounting frame, the limiting groove is formed between the opening and the light outlet area of the light source, a polaroid is arranged between the opening and the light outlet area of the light source, the polaroid is rotatably arranged on a groove wall of the limiting groove, and the polaroid can be stirred circumferentially through a notch of the limiting groove.

Furthermore, the mounting frame is connected to the light source through a fixing member, the fixing member sequentially penetrates through the mounting frame and the light source, so that the mounting frame is fixed to a light emitting area of the light source, the mounting frame is made of an opaque material, and emergent light of the light source sequentially passes through the polarizing film and the opening.

Furthermore, a light emitting module and a light diffusion plate are arranged inside the light source, the light diffusion plate is arranged between the polarizing plate and the light emitting module, the light diffusion plate and the polarizing plate are respectively arranged on two opposite sides of the light emitting area, the light emitting module comprises a PCB and a plurality of lamp beads, the plurality of lamp beads are arranged on the PCB and are electrically driven by the PCB to emit light, light rays emitted by the plurality of lamp beads sequentially pass through the light diffusion plate, the light emitting area, the polarizing plate and the opening, and the emergent light rays can be more uniform through the light diffusion plate.

Further, the installing frame is provided with an adjusting fixing hole used for corresponding to the polaroid, the adjusting fixing hole is provided with a positioning piece used for fixing the polaroid, and the positioning piece is in threaded connection with the adjusting fixing hole.

Furthermore, a plurality of adjusting fixing holes are arranged around the opening, and the number of the adjusting fixing holes is equal to that of the positioning pieces.

Furthermore, the opening and the polaroid are both circular, and the caliber of the polaroid is larger than that of the opening, so that the polaroid is prevented from falling out of the opening.

Furthermore, the polaroid is accommodated in an accommodating cavity in the mounting frame, the opening and the limiting groove are communicated with the accommodating cavity, and the light emitting areas of the opening and the light source are located on two opposite sides of the accommodating cavity.

Furthermore, the aperture of the accommodating cavity is larger than that of the polaroid, so that the polaroid can flexibly rotate in the accommodating cavity.

Further, the depth of the accommodating cavity is larger than the thickness of the polaroid, so that the polaroid can flexibly rotate in the accommodating cavity.

Further, the polarizing film is a linear polarizing film, when a lens is arranged above the light emergent area of the light source, the lens is provided with a lens polarizing film which is a circular polarizing film, a detected object or workpiece is arranged between the linear polarizing film and the circular polarizing film, light emitted by the light source firstly passes through the linear polarizing film to become linearly polarized light, then the linearly polarized light irradiates the detected object or workpiece, the linearly polarized light enters the lens through the circular polarizing film, and the light emitted by the light source finally enters the lens through secondary polarization, wherein the combination of the linear polarizing film and the circular polarizing film realizes the phenomenon of eliminating reflection and effectively ensures the detection effect.

The beneficial effects of the utility model reside in that: the utility model discloses an installing frame and light source, the installing frame sets up in the play light zone of light source, uncovered and spacing groove have been seted up to the installing frame, the spacing groove sets up between the play light zone of uncovered and light source, be provided with the polaroid between the play light zone of uncovered and light source, the polaroid rotates and sets up in the cell wall of spacing groove, when making light source mounted position fixed, only need stir the polaroid of installing in the installing frame of light source and move with the circumferencial direction at the notch of spacing groove, alright the polarization texture direction of freely adjusting the polaroid, its stability is good, it is high to adjust the flexibility ratio, and the efficiency of detection has been improved effectively.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.

Fig. 2 is an exploded view of embodiment 1 of the present invention.

Fig. 3 is an assembly effect diagram of embodiment 1 of the present invention.

Fig. 4 is a schematic structural diagram of embodiment 2 of the present invention.

Wherein: 1-installing a frame; 2-a light source; 3-a polarizing plate; 4-a fixing piece; 5-a positioning member; 6-lens; 7-circular polarizer; 8-a workpiece; 11-open mouth; 12-a limiting groove; 13-adjusting the fixing hole; 21-light emitting area; 22-a light emitting module; 23-light diffuser plate.

Detailed Description

As used in this specification and the appended claims, certain terms are used to refer to particular components, and it will be appreciated by those skilled in the art that a manufacturer may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", horizontal "and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, detachable connections, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The present invention will be described in further detail with reference to the accompanying drawings 1 to 4 and the specific embodiments, but the present invention is not limited thereto.

Example 1

A polaroid direction adjusting device in visual detection is disclosed, as shown in figures 1-3, comprising a mounting frame 1 and a light source 2, wherein the mounting frame 1 is arranged at a light emitting area 21 of the light source 2, the mounting frame 1 is provided with an opening 11 and a limiting groove 12, wherein the opening 11 is arranged at the top of the mounting frame 1, the limiting groove 12 is arranged at the side part of the mounting frame 1, the limiting groove 12 is arranged between the opening 11 and the light emitting area 21 of the light source 2, a polaroid 3 is arranged between the opening 11 and the light emitting area 21 of the light source 2, the polaroid 3 is rotatably arranged at the groove wall of the limiting groove 12, wherein, the caliber of the notch of the limiting groove 12 is far smaller than that of the polaroid 3, so that the polaroid 3 is limited in the mounting frame 1 by the limiting groove 12, the edge of the polaroid 3 is positioned at the notch of the limiting groove 12, the edge of the polaroid 3 is directly stirred along the circumferential direction by hand at the notch of the limiting groove 12, so that the polaroid 3 can rotate along the smooth groove wall of the limiting groove 12, the polaroid 3 is a linear polaroid, the polaroid 3 can rotate in the circumferential direction between the opening 11 and the light-emitting area 21 of the light source 2, when a detection picture obtained by matching the linear polaroid and the circular polaroid shows no reflection influence, and detection software reminds that the surface defects of a reflection workpiece are detected, namely, a good angle rotation position is realized for the light source polaroid, and the polaroid 3 is stirred to a required accurate position.

And, the mounting frame 1 is made of opaque material, and the emergent ray of light source 2 passes through polaroid 3 and uncovered 11 in proper order, and when the object that detects corresponds with uncovered 11, the emergent ray of light source 2 can illuminate the object that is detected.

Preferably, in order to stably accommodate the polarizer 3 between the mounting frame 1 and the light emitting area 21 of the light source 2, the mounting frame 1 is connected to the light source 2 through a fixing member 4, the fixing member 4 may be a hexagon socket head cap screw, and the fixing member 4 is sequentially screwed with the mounting frame 1 and the light source 2, so that effective locking of the mounting frame 1 is achieved.

And, light source 2's inside is provided with light emitting module 22 and light diffuser plate 23, light diffuser plate 23 sets up between polaroid 3 and light emitting module 22, wherein, light diffuser plate 23 sets up in the bottom of going out light zone 21, polaroid 3 sets up in the top of going out light zone 21, light diffuser plate 23 can make the light of outgoing more even, furthermore, light emitting module 22 includes PCB board and a plurality of lamp pearl, a plurality of lamp pearls set up in PCB board and by PCB board electric drive luminous, it is located light source 2's top to go out light zone 21, the PCB board is located light source 2's bottom, the lamp pearl can be SMD LED, the light that a plurality of lamp pearls sent passes through light diffuser plate 23 in proper order, go out light zone 21, polaroid 3 and uncovered 11 outgoing.

Because the internal surface of installing frame 1, the play light zone 21 of light source 2, the cell wall of spacing groove 12 and polaroid 3 all cooperate smoothly, when the light source polaroid realized good angular rotation position and stirred to required accurate position, for locking polaroid 3 better, installing frame 1 is offered and is used for the regulation fixed orifices 13 that corresponds with polaroid 3, it is provided with setting element 5 that is used for fixed polaroid 3 to adjust fixed orifices 13, setting element 5 can be bolt spare, when required position is stirred to polaroid 3, can be through screwing up setting element 5 with locking fixed polaroid 3, and, a plurality of regulation fixed orifices 13 set up around uncovered 11.

Preferably, the opening 11 and the polarizer 3 are circular, the aperture of the polarizer 3 is larger than the aperture of the opening 11, so as to prevent the polarizer 3 from falling out of the opening 11, and the polarizer 3 is accommodated in the accommodating cavity in the mounting frame 1, the opening 11 is located at the top of the accommodating cavity, the light emitting area 21 of the light source 2 is located at the bottom of the accommodating cavity, the aperture of the accommodating cavity is larger than the aperture of the polarizer 3, the depth of the accommodating cavity is larger than the thickness of the polarizer 3, the accommodating cavity can be set to be a cylindrical accommodating cavity, the limiting groove 12 is located at the side of the accommodating cavity, the opening 11 and the limiting groove 12 are both communicated with the accommodating cavity, when the polarizer 3 is mounted, the polarizer 3 is firstly placed in the light emitting area 21 of the light source 2, so that the accommodating cavity of the mounting frame 1 is coaxially aligned with the polarizer 3, and the notch of the limiting groove 12 is tightly attached to the accommodating cavity, so that the edge of the polarizer 3 can be pulled from the notch of the limiting groove 12, and meanwhile, the mounting frame 1 is detachably fixed to the light emitting area 21 of the light source 2 through the fixing member 4, a gap is reserved in the mounting frame 1, the polaroid 3 is convenient to rotate without interference, and the polaroid 3 can coaxially rotate.

Example 2

As shown in fig. 4, this embodiment is different from embodiment 1 in that a lens 6 is disposed above a light exit area 21 of a light source 2, the lens 6 is provided with a circularly polarizing plate 7, and the circularly polarizing plate 7 is a lens polarizing plate.

In the detection process, a workpiece 8 with a highly reflective surface to be detected is arranged between the lens 6 and the light source 2, received light of the lens 6 is firstly linearly polarized through primary polarization of the polaroid 3, and then the light finally enters the lens 6 through secondary polarization of the circular polaroid 7, so that the phenomenon of light reflection is effectively eliminated, the polaroid 3 of the light source 2 is shifted in the circumferential direction when the light source 2 is lightened under the condition that the state of the lens polaroid is not changed and the position state of the light source 2 is not changed, when visual detection software of a camera connected with the lens 6 learns that a shot picture has no reflective influence, the polaroid 3 can be effectively locked through the positioning piece 5, the optimal matching angle between the lens polaroid and the light source polaroid is kept, and the optimal detection image without light reflection is quickly obtained. The lens polaroid does not need to be adjusted in a rotating mode, so that the lens of the lens 6 and the photosensitive element in the lens can be effectively protected, and the influence of scratching, loosening, dirt and the like caused by frequent adjustment on the lens and the photosensitive element in the lens can be prevented.

Other structures of this embodiment are the same as those of embodiment 1, and are not described herein again.

Obviously, the utility model discloses can be at the polaroid that need not rotate the light source, do not change direct rotation regulation light source under the condition of light source mounted position and angle, have the effect that occupation space is little concurrently, adjust nimble, simple to operate, real-time fixed, save time, change convenient etc.

Variations and modifications to the above-described embodiments may become apparent to those skilled in the art from the disclosure and teachings of the above description. Therefore, the present invention is not limited to the above-mentioned embodiments, and any obvious modifications, replacements or variations made by those skilled in the art on the basis of the present invention belong to the protection scope of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims

1. A polarizer orientation adjustment apparatus in visual inspection, comprising:

the light source comprises a mounting frame (1) and a light source (2), wherein the mounting frame (1) is arranged in a light emergent area (21) of the light source (2);

the mounting frame (1) is provided with an opening (11) and a limiting groove (12), and the limiting groove (12) is arranged between the opening (11) and a light outgoing area (21) of the light source (2);

a polaroid (3) is arranged between the opening (11) and the light outlet area (21) of the light source (2), and the polaroid (3) is rotatably arranged on the groove wall of the limiting groove (12).

2. The polarizing plate orientation adjustment device in visual inspection as claimed in claim 1, wherein: the mounting frame (1) is connected to the light source (2) through a fixing piece (4).

3. The polarizing plate orientation adjusting device in visual inspection as claimed in any one of claims 1 to 2, wherein: a light emitting module (22) and a light diffusion plate (23) are arranged in the light source (2), and the light diffusion plate (23) is arranged between the polaroid (3) and the light emitting module (22).

4. The polarizing plate orientation adjustment device in visual inspection as claimed in claim 1, wherein: the mounting frame (1) is provided with an adjusting fixing hole (13) corresponding to the polaroid sheet (3), and the adjusting fixing hole (13) is provided with a positioning piece (5) used for fixing the polaroid sheet (3).

5. The polarizer orientation adjusting apparatus in visual inspection according to claim 4, wherein: a plurality of said adjustment fixing holes (13) are arranged around said open mouth (11).

6. The polarizing plate orientation adjustment device in visual inspection as claimed in claim 1, wherein: the opening (11) and the polaroid (3) are both circular, and the caliber of the polaroid (3) is larger than that of the opening (11).

7. The polarizer orientation adjusting apparatus in visual inspection according to claim 6, wherein: the polaroid (3) is accommodated in the accommodating cavity in the mounting frame (1), and the opening (11) and the limiting groove (12) are communicated with the accommodating cavity.

8. The polarizer orientation adjusting apparatus in visual inspection according to claim 7, wherein: the aperture of the accommodating cavity is larger than that of the polaroid (3).

9. The polarizer orientation adjusting apparatus in visual inspection according to claim 7, wherein: the depth of the accommodating cavity is larger than the thickness of the polaroid (3).

10. The polarizing plate orientation adjusting device in visual inspection as claimed in any one of claims 6 to 9, wherein: the polarizing plate (3) is a linear polarizing plate.