CN217540526U

CN217540526U - Adjustable coaxial light source structure and detection system

Info

Publication number: CN217540526U
Application number: CN202221622450.0U
Authority: CN
Inventors: 钟超
Original assignee: Guangdong OPT Machine Vision Co Ltd
Current assignee: Guangdong OPT Machine Vision Co Ltd
Priority date: 2022-06-27
Filing date: 2022-06-27
Publication date: 2022-10-04
Anticipated expiration: 2032-06-27

Abstract

The utility model discloses an adjustable coaxial light source structure and a detection system, wherein the adjustable coaxial light source structure comprises a shell unit, and a holding cavity is arranged in the shell unit; the accommodating cavity is internally provided with a light-emitting component and a plurality of spectroscope units which are arranged on one side of the light-emitting component and distributed at intervals; the accommodating cavity is provided with a workpiece light outlet hole corresponding to one side of the spectroscope unit capable of reflecting light and a camera light outlet hole corresponding to the other side of the spectroscope unit; the shell unit is also connected with a light barrier in a sliding mode, and the light barrier is arranged on one side of the light outlet hole of the workpiece. In a limited space of the shell unit, the detection requirement of multiple workpieces can be met only by using a light-emitting assembly, the space utilization rate is high, and the light utilization rate is high; meanwhile, the light barrier can avoid light leakage, and the light utilization rate is further improved. Therefore, the utility model discloses a coaxial light source structure and detecting system with adjustable have space utilization height and the high advantage of light utilization ratio.

Description

Adjustable coaxial light source structure and detection system

Technical Field

The utility model relates to a light source technical field especially relates to a coaxial light source structure and detecting system with adjustable.

Background

In a machine vision detection scene, a light source can separate defect characteristic information from background characteristic information on a workpiece so as to facilitate a vision detection device to acquire the defect characteristic information; according to different workpieces and different types of defect feature detection requirements, the light source derives various types such as a coaxial light source, a linear light source, an annular light source and the like.

As shown in fig. 1, a conventional coaxial light source includes a coaxial light source housing 01, a lamp bead 02 and a light splitter 05 are arranged in the coaxial light source housing 01, light emitted by the lamp bead 02 is irradiated on the light splitter 05, and passes through a light through hole 011 of the coaxial light source housing 01 through the reflection action of the light splitter 05, so that the light finally illuminates a target workpiece 03; the camera unit 04 outside the coaxial light source housing 01 can acquire image information of the spectroscopic plate 05 reflected from the target workpiece 03 and passed through the observation hole 012 of the coaxial light source housing 01.

The coaxial light source has the following defects: the device does not have the capability of detecting a plurality of workpieces, and if a plurality of workpieces need to be detected at one time in a production line, a plurality of groups of coaxial light sources and corresponding camera units 04 need to be arranged, so that the space utilization rate is low; meanwhile, each workpiece corresponds to one light source, which usually far exceeds the minimum brightness detection requirement of the workpiece, i.e. the light utilization efficiency is low.

In summary, the conventional coaxial light source has the disadvantages of low space utilization rate and low light utilization rate when meeting the requirement of simultaneously detecting a plurality of workpieces.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a coaxial light source structure and detecting system with adjustable solve present coaxial light source and when facing the demand that a plurality of work pieces detected simultaneously space utilization is low and light utilization is low problem.

To achieve the purpose, the utility model adopts the following technical proposal:

an adjustable coaxial light source structure comprises a shell unit, wherein an accommodating cavity is formed in the shell unit;

the accommodating cavity is internally provided with a light-emitting component and a plurality of spectroscope units, and the spectroscope units are arranged on one side of the light-emitting component and distributed at intervals; the accommodating cavity is provided with a workpiece light outlet corresponding to one side of the spectroscope unit capable of reflecting light and a camera light outlet corresponding to the other side of the spectroscope unit;

the shell unit is further connected with a light barrier in a sliding mode, the light barrier is arranged on one side of the workpiece light outlet hole, and the light barrier can slide to the workpiece light outlet hole to seal the workpiece light outlet hole.

Optionally, the number of the beam splitter units is two, namely a first beam splitter unit and a second beam splitter unit; the first light splitting unit and the second light splitting unit are sequentially arranged along the direction far away from the light emitting component, and the inclination directions of the first light splitting unit and the second light splitting unit are the same.

Optionally, the number of the beam splitter units is two, namely a first beam splitter unit and a second beam splitter unit; the first light splitting unit and the second light splitting unit are sequentially arranged along the direction far away from the light emitting assembly, and the inclination directions of the first light splitting unit and the second light splitting unit are opposite.

Optionally, a light absorption unit is further disposed in the accommodating cavity, and the light absorption unit is disposed on one side of the spectroscope unit away from the light emitting assembly.

Optionally, a parallel light path component is further installed in the accommodating cavity, and the parallel light path component is arranged between the light emitting component and the spectroscope unit.

Optionally, a boss protrudes out of the shell unit, a chute is formed in the boss, and the light barrier is connected with the chute in a sliding manner;

a fixed shaft part is fixedly connected in the sliding groove and arranged on one side of the workpiece light outlet hole; the dead axle spare rotates and is connected elastic baffle, just the dead axle spare with be provided with the torsional spring unit between the elastic baffle, the one end of torsional spring unit with the one end of dead axle spare is connected, the other end with elastic baffle connects.

Optionally, an adjusting groove is formed in the cavity wall of the accommodating cavity, and the light emitting assembly is connected with the adjusting groove in a sliding manner; a plurality of adjusting holes are formed in the bottom of the adjusting groove, a positioning screw penetrates through one adjusting hole, and the positioning screw is used for locking the light-emitting assembly.

A detection system is characterized by comprising a camera unit and the adjustable coaxial light source structure, wherein the camera unit is arranged on one side of a light outlet of the camera.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model provides an adjustable coaxial light source structure and detecting system, it can detect a plurality of work pieces, for example, light-emitting component sends light, half of its light reflects through the spectroscope unit of first, after passing corresponding work piece light-emitting hole, reaches first work piece; the other half of the light passes through the spectroscope unit, reaches the next spectroscope unit, is reflected by the next spectroscope unit, passes through the corresponding workpiece light-emitting hole and reaches a second workpiece; meanwhile, the camera light-emitting hole on the other side of each spectroscope unit enables the camera unit to acquire the surface information of the workpiece; in conclusion, in the limited space of the shell unit, the detection requirement of multiple workpieces can be met only by using a light-emitting assembly, the space utilization rate is high, and the light utilization rate is high; moreover, after the number of the workpieces to be detected is reduced, the corresponding workpiece light outlet holes can be shielded by moving the light barrier, so that the light leakage phenomenon is avoided, and the light utilization rate is further improved. Therefore, the utility model discloses a coaxial light source structure and detecting system with adjustable have space utilization height and the high advantage of light utilization ratio.

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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

The structure, ratio, size and the like shown in the drawings of the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention does not have the substantial significance in the technology, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy which can be produced by the present invention and the achievable purpose.

FIG. 1 is a schematic diagram of a coaxial light source in the prior art;

fig. 2 is a schematic view of a first cross-sectional structure of an adjustable coaxial light source structure according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a second cross-sectional structure of an adjustable coaxial light source structure according to an embodiment of the present invention;

fig. 4 is a schematic view of a first state structure of an adjustable coaxial light source structure according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a second state of the adjustable coaxial light source structure according to an embodiment of the present invention;

fig. 6 is a schematic partial front view cross-sectional structure diagram of an adjustable coaxial light source structure according to an embodiment of the present invention;

fig. 7 is a schematic partial side view of a cross-sectional structure of an adjustable coaxial light source structure according to an embodiment of the present invention;

fig. 8 is a schematic partial sectional view of an adjustable coaxial light source structure according to an embodiment of the present invention.

Illustration of the drawings: 01. a coaxial light source housing; 011. a light through hole; 012. an observation hole; 02. a lamp bead; 03. a target workpiece; 04. a camera unit; 05. a light splitting sheet;

10. a housing unit; 11. an accommodating cavity; 111. a workpiece light-emitting hole; 112. a camera light exit; 12. a boss; 13. a chute; 141. a fixed shaft member; 142. an elastic baffle plate; 15. an adjustment groove; 16. an adjustment hole; 20. a light emitting assembly; 30. a spectroscope unit; 31. a first light splitting unit; 32. a second light splitting unit; 40. a light absorbing unit; 50. a parallel light path component; 60. a light barrier.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the embodiments described below are only some embodiments of the present invention, but 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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. It should be noted that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Please refer to fig. 1 to 8, fig. 1 is a schematic structural diagram of a coaxial light source in the background art, fig. 2 is a schematic structural diagram of a first cross-section of an adjustable coaxial light source structure provided by the embodiment of the present invention, fig. 3 is a schematic structural diagram of a second cross-section of an adjustable coaxial light source structure provided by the embodiment of the present invention, fig. 4 is a schematic structural diagram of a first state of an adjustable coaxial light source structure provided by the embodiment of the present invention, fig. 5 is a schematic structural diagram of a second state of an adjustable coaxial light source structure provided by the embodiment of the present invention, fig. 6 is a schematic structural diagram of a local front-looking cross-section of an adjustable coaxial light source structure provided by the embodiment of the present invention, fig. 7 is a schematic structural diagram of a local cross-section of an adjustable coaxial light source structure provided by the embodiment of the present invention, and fig. 8 is a schematic structural diagram of a local cross-section of an adjustable coaxial light source structure provided by the embodiment of the present invention.

Example one

The adjustable coaxial light source structure provided by the embodiment is applied to the scene of workpiece detection, can polish a plurality of workpieces simultaneously, and simultaneously, optimizes the structure of the adjustable coaxial light source structure to enable the adjustable coaxial light source structure to have certain adjusting capacity, and can adjust the structural state of the adjustable coaxial light source according to the number of the workpieces to improve the light utilization rate.

As shown in fig. 2 to fig. 5, the adjustable coaxial light source structure of the present embodiment includes a housing unit 10, and an accommodating cavity 11 is formed in the housing unit 10; the light-emitting component 20 and the plurality of spectroscope units 30 are arranged in the accommodating cavity 11, and the plurality of spectroscope units 30 are arranged on one side of the light-emitting component 20 and distributed at intervals; the accommodating cavity 11 is provided with a workpiece light-emitting hole 111 corresponding to one side of the spectroscope unit 30 capable of reflecting light, and a camera light-emitting hole 112 corresponding to the other side of the spectroscope unit 30; the beam splitter unit 30 has a transflective capability, that is, part of the light irradiated on the beam splitter unit 30 can be reflected by the beam splitter unit 30, and part of the light can pass through the beam splitter unit 30. The light barrier 60 is slidably connected to the housing unit 10, the light barrier 60 is disposed on one side of the workpiece light exit hole 111, and the light barrier 60 can slide to the workpiece light exit hole 111 to block the workpiece light exit hole 111.

Specifically, the adjustable coaxial light source structure can detect a plurality of workpieces, for example, the light emitting assembly 20 emits light, half of the light is reflected by the first beam splitter unit 30, passes through the corresponding workpiece light exit hole 111, and reaches the first workpiece; the other half of the light passes through the beam splitter unit 30, reaches the next beam splitter unit 30, is reflected by the next beam splitter unit 30, passes through the corresponding workpiece light-emitting hole 111, and reaches the second workpiece; meanwhile, the camera light-emitting hole 112 on the other side of each beam splitter unit 30 enables the camera unit 04 to acquire the surface information of the workpiece; in summary, in the limited space of the housing unit 10, the detection requirement of multiple workpieces is satisfied by using only one light emitting module 20, the space utilization rate is high, and the light utilization rate is high; moreover, when the number of the workpieces to be detected is reduced, as shown in fig. 4 and 5, the light blocking plate 60 can be moved to block the corresponding workpiece light exit holes 111, so as to avoid light leakage and further improve the light utilization rate. Therefore, the adjustable coaxial light source structure has the advantages of high space utilization rate and high light utilization rate.

In a specific embodiment, as shown in fig. 2, the number of the beam splitter units 30 is two, namely, a first beam splitter unit 31 and a second beam splitter unit 32; the first light splitting unit 31 and the second light splitting unit 32 are sequentially disposed in a direction away from the light emitting assembly 20, and the first light splitting unit 31 and the second light splitting unit 32 are inclined in the same direction.

In another specific embodiment, as shown in fig. 3, the number of the beam splitter units 30 is two, namely, a first beam splitter unit 31 and a second beam splitter unit 32; the first light splitting unit 31 and the second light splitting unit 32 are sequentially disposed in a direction away from the light emitting assembly 20, and the first light splitting unit 31 and the second light splitting unit 32 are inclined in opposite directions.

Furthermore, a light absorption unit 40 is further disposed in the accommodating cavity 11, and the light absorption unit 40 is disposed on a side of the beam splitter unit 30 away from the light emitting element 20. Wherein, through the setting of extinction unit 40, can prevent to shine and take place diffuse reflection in the light of this department of accommodation cavity 11, avoid producing the parasitic light, improved the detection precision.

Further, a parallel light path component 50 is further installed in the accommodating cavity 11, and the parallel light path component 50 is disposed between the light emitting component 20 and the beam splitter unit 30. In the present embodiment, the parallel light path member 50 includes two convex lenses; in other alternative embodiments, the parallel light path component 50 may include a plurality of convex lenses.

Further, as shown in fig. 6 and 7, the bottom of fig. 6 is a side wall of the housing unit 10, which is provided with a workpiece light-emitting hole 111, the housing unit 10 is provided with a convex boss 12 protruding from the bottom, the convex boss 12 is provided with a sliding slot 13, the light barrier 60 is slidably connected to the sliding slot 13, that is, the light barrier 60 can slide in the sliding slot 13 and is limited by a slot bottom (protrusions on left and right sides) of the sliding slot 13 to prevent the light barrier from sliding out of the housing unit 10; wherein, a fixed shaft member 141 is fixedly connected in the sliding chute 13, and the fixed shaft member 141 is arranged at one side of the workpiece light-emitting hole 111; the fixed shaft 141 is rotatably connected to the elastic baffle 142, and a torsion spring unit (not shown) is disposed between the fixed shaft 141 and the elastic baffle 142, one end of the torsion spring unit is connected to one end of the fixed shaft 141, and the other end is connected to the elastic baffle 142. Illustratively, when a certain workpiece light exit hole 111 needs to be blocked, the light barrier 60 is moved to correspondingly move to the workpiece light exit hole 111, and in the moving process, the light barrier 60 acts on the elastic barrier 142 to deform the elastic barrier 142 and rotate toward the chute 13, and when the light barrier 60 reaches the workpiece light exit hole 111, the light barrier 60 is just separated from the elastic barrier 142, at this time, under the elasticity of the elastic barrier 142 and the action of the torsion spring unit, the elastic barrier 142 resets to play a role of limiting the light barrier 60, it needs to be understood that the distance between the two elastic barriers 142, or the distance between the elastic barrier 142 and the chute bottom of the chute 13 is greater than the length of the light barrier 60, so that the elastic barrier 142 remains a reset space, and meanwhile, the length of the light barrier 60 is greater than the width of the workpiece light exit hole 111, so that the light barrier 60 can reliably block the workpiece light exit hole 111 as long as the light barrier 60 is between the two elastic barriers 142. The structure does not need an additional connecting piece, and the complexity of operation is reduced.

Further, as shown in fig. 8, the cavity wall of the accommodating cavity 11 is provided with an adjusting groove 15, and the light emitting assembly 20 is slidably connected with the adjusting groove 15; a plurality of adjusting holes 16 are formed at the bottom of the adjusting groove 15, and a set screw is arranged in one of the adjusting holes 16 in a penetrating manner and used for locking the light-emitting component 20.

In summary, the adjustable coaxial light source structure provided by the present embodiment has the advantages of high space utilization rate and high light utilization rate.

Example two

The detection system of the present embodiment includes a camera unit 04 and an adjustable coaxial light source structure as in the first embodiment, wherein the camera unit 04 is disposed at one side of the camera light-emitting hole 112. In the first embodiment, specific structures and technical effects of the camera unit 04 are described, and the detection system of the present embodiment employs the adjustable coaxial light source structure, which also has technical effects.

In summary, the detection system provided by the embodiment has the advantages of high space utilization rate and high light utilization rate.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. An adjustable coaxial light source structure is characterized by comprising a shell unit (10), wherein a containing cavity (11) is arranged in the shell unit (10);

a light-emitting component (20) and a plurality of spectroscope units (30) are arranged in the accommodating cavity (11), and the spectroscope units (30) are arranged on one side of the light-emitting component (20) and distributed at intervals; a workpiece light-emitting hole (111) is formed in one side, corresponding to the side, capable of reflecting, of the spectroscope unit (30), of the accommodating cavity (11), and a camera light-emitting hole (112) is formed in the other side, corresponding to the spectroscope unit (30);

the light barrier (60) is further connected to the outside of the shell unit (10) in a sliding mode, the light barrier (60) is arranged on one side of the workpiece light emitting hole (111), and the light barrier (60) can slide to the workpiece light emitting hole (111) to seal the workpiece light emitting hole (111).

2. The adjustable coaxial light source structure of claim 1, wherein the number of the beam splitter units (30) is two, namely a first beam splitter unit (31) and a second beam splitter unit (32); the first light splitting unit (31) and the second light splitting unit (32) are sequentially arranged along the direction far away from the light emitting assembly (20), and the inclination directions of the first light splitting unit (31) and the second light splitting unit (32) are the same.

3. The adjustable coaxial light source structure of claim 1, wherein the number of the beam splitter units (30) is two, namely a first beam splitter unit (31) and a second beam splitter unit (32); the first light splitting unit (31) and the second light splitting unit (32) are sequentially arranged along the direction far away from the light emitting assembly (20), and the inclination directions of the first light splitting unit (31) and the second light splitting unit (32) are opposite.

4. The adjustable coaxial light source structure according to claim 1, wherein a light absorption unit (40) is further disposed in the accommodating cavity (11), and the light absorption unit (40) is disposed on a side of the beam splitter unit (30) away from the light emitting assembly (20).

5. The adjustable coaxial light source structure according to claim 1, wherein a parallel light path component (50) is further installed in the accommodating cavity (11), and the parallel light path component (50) is disposed between the light emitting component (20) and the beam splitter unit (30).

6. The adjustable coaxial light source structure according to claim 1, wherein the housing unit (10) is provided with a convex boss (12) in a protruding manner, the convex boss (12) is provided with a sliding slot (13), and the light barrier (60) is connected with the sliding slot (13) in a sliding manner;

a fixed shaft piece (141) is fixedly connected in the sliding groove (13), and the fixed shaft piece (141) is arranged on one side of the workpiece light outlet hole (111); the dead axle spare (141) rotate and are connected with elasticity baffle (142), just dead axle spare (141) with be provided with the torsional spring unit between elasticity baffle (142), the one end of torsional spring unit with the one end of dead axle spare (141) is connected, the other end with elasticity baffle (142) is connected.

7. The adjustable coaxial light source structure of claim 1, wherein the cavity wall of the accommodating cavity (11) is provided with an adjusting groove (15), and the light emitting assembly (20) is slidably connected with the adjusting groove (15); a plurality of adjusting holes (16) are formed in the bottom of the adjusting groove (15), a positioning screw penetrates through one adjusting hole (16), and the positioning screw is used for locking the light-emitting component (20).

8. A detection system, comprising a camera unit (04) and the adjustable coaxial light source structure as claimed in any one of claims 1 to 7, wherein the camera unit (04) is disposed at one side of the camera light outlet (112).