CN219396231U

CN219396231U - Light source for machine vision tobacco leaf sorting

Info

Publication number: CN219396231U
Application number: CN202320815168.2U
Authority: CN
Inventors: 倪克平; 甄焕菊; 王德吉; 王改丽; 牛慧伟
Original assignee: Staff Continuing Education China National Tobacco Corp
Current assignee: Staff Continuing Education China National Tobacco Corp
Priority date: 2023-04-13
Filing date: 2023-04-13
Publication date: 2023-07-25
Anticipated expiration: 2033-04-13

Abstract

The utility model discloses a light source for machine vision tobacco leaf sorting, which relates to the technical field of tobacco leaf sorting and comprises a lamp shell, wherein the middle part of the lamp shell is provided with a through groove penetrating through the thickness of the lamp shell, the lamp shell and the through groove are surrounded to form a cavity, the top surface of the cavity is a light-transmitting plate, two corresponding side surfaces of the cavity are respectively provided with an opening, a first slot and a second slot are arranged in the lamp shell, a pair of light diffusion plates are inserted in the first slot, a pair of PCB (printed circuit board) is inserted in the second slot, a plurality of LED (light-emitting diode) lamp beads are arranged on the PCB, a side plate is covered at the opening of the cavity, and a heat dissipation mechanism is arranged in the heat dissipation cavity.

Description

Light source for machine vision tobacco leaf sorting

Technical Field

The utility model relates to the technical field of tobacco leaf sorting, in particular to a light source for machine vision tobacco leaf sorting.

Background

The classification of the flue-cured tobacco grade is carried out according to tobacco grading factors, wherein the grading factors mainly comprise quality factors and control factors, and the quality factors comprise maturity, identity (oil content, thickness and structure), color (color and luster) and leaf length, and are factors for explaining the appearance quality or grade quality of the tobacco; and the variegation, the residual injury and the damage are control factors influencing the appearance quality or the grade of the tobacco leaves. The quality factor is the basis for measuring the quality of tobacco leaves, and the control factor is the factor influencing the quality of tobacco leaves. Therefore, when tobacco leaves are classified, the tobacco leaves are selected piece by piece according to the national standard of flue-cured tobacco classification and by referring to the physical standard sample, finally the tobacco leaves are bundled according to the bundling rule, stacked and stored in stages, and marked with the stages to be sold.

At present, a machine vision device is adopted to realize the sorting of tobacco leaves, for example, an utility model patent with the publication number of CN107952696B discloses a detection grading device and a detection method suitable for fresh tobacco leaves, and a tobacco leaf detection module comprises a camera, a light source, a light shielding cover, a photoelectric detector and a conveyor belt; the camera is positioned at the center of the detection device, LED light sources are fully distributed around the camera, the light sources irradiate on a conveyor belt of the tobacco leaf conveying module, and the light intensity is far greater than the daytime environmental light; the utility model patent of publication CN110636231A discloses a device and a method for acquiring three-view images of single-piece tobacco leaves, which adopts two groups of front light sources and one group of back light sources to respectively detect two-side images and perspective images of the tobacco leaves, wherein the front light sources adopt LED lamps with low cost and uniform light emission, and the back light sources preferably adopt LED flat lamps. In the sorting technology of the tobacco leaves by the machine vision device, the light source structure is not focused, so that the light source structure is optimized.

However, in the practical application of the technology of sorting tobacco leaves by using a machine vision device, in order to provide production efficiency, the tobacco leaf sorting system recommends to use dynamic pipeline detection, the pipeline speed is greater than 1 m/s, and the sampling time of machine vision is required to be shortened as much as possible and is generally less than or equal to 1 millisecond; the light source of the machine vision device is required to be high, otherwise, the problems of poor brightness uniformity, poor brightness and the like are easy to exist, and finally, the sorting recognition quality of the tobacco leaves by the machine vision device is reduced.

Disclosure of Invention

In order to solve the problems, the utility model provides a light source for machine vision tobacco leaf sorting.

The specific technical scheme is as follows: including the lamp body, the middle part of lamp body is provided with the logical groove that runs through its thickness, the lamp body with logical groove encloses into the cavity, the top surface of cavity is the light-passing board, two of them sides that correspond of cavity all are provided with the opening, be provided with first slot and second slot in the lamp body, first slot the second slot with the opening looks perpendicular sets up, peg graft in the first slot has a pair of light diffusion board, peg graft in the second slot has a pair of PCB board, be equipped with a plurality of LED lamp pearl on the PCB board, the opening part lid of cavity has the curb plate, the PCB board with the bottom surface of lamp body the curb plate encloses into the heat dissipation chamber, the heat dissipation intracavity is provided with cooling mechanism.

Preferably, the heat dissipation mechanism comprises a heat dissipation fan and a dustproof heat dissipation net, and the heat dissipation fan and the dustproof heat dissipation net are respectively installed on the other two corresponding side surfaces of the cavity.

Preferably, at least four heat dissipation fans are provided, and the four heat dissipation fans are uniformly distributed on the side face of the cavity.

Preferably, the PCB board is provided with a power supply line, the tail end of the power supply line is provided with a plug-in connection part for being plugged with an external power supply, the plug-in connection part penetrates through a through hole in the side plate, and the inner edge of the through hole is provided with a plurality of rubber sheets.

Preferably, the opening part of the cavity is provided with a clamping groove, the inner side surface of the side plate is provided with a clamping block matched and clamped with the clamping groove, and four corners of the side plate are fixedly connected with the opening part of the cavity through bolts.

Preferably, the light-transmitting plate is a tempered glass plate.

Preferably, the lamp housing is in a back-shaped structure, and the through groove is in a rectangular or square structure.

Preferably, the light diffusion plate and the PCB are in a concave structure, and a pair of the light diffusion plates and a pair of the PCB are distributed around the periphery of the through groove.

Preferably, a mounting plate is arranged on the side edge of the lamp housing, and mounting holes are formed in the mounting plate.

The utility model provides a light source for machine vision tobacco leaf sorting, which has the beneficial effects that compared with the prior art:

(1): the through grooves are arranged to facilitate the camera for machine vision to collect tobacco leaf images, the pair of PCB plates are distributed around the periphery of the through grooves to form the lamp plates, and the light diffusion plates are arranged to enable emitted light to obtain uniform and stable diffuse illumination areas;

(2): according to the utility model, the light diffusion plate and the PCB are arranged on the upper shell in an inserting manner, so that the light diffusion plate and the PCB can not interfere with each other during disassembly and assembly, and the independent maintenance and replacement of the light diffusion plate and the PCB can be realized;

(3): the LED lamp bulb is provided with the heat dissipation cavity and the heat dissipation mechanism, so that heat generated by the LED lamp bulb in the cavity is conveniently discharged, and the service life of the light source is prolonged.

Drawings

Fig. 1: is an overall top view of the present utility model.

Fig. 2: is a structural diagram of the cavity in the utility model.

Fig. 3: is the whole internal structure diagram in the utility model.

Fig. 4: an enlarged view of the portion a in fig. 3.

Fig. 5: is a side view of the interior of the cavity of the present utility model.

Fig. 6: an enlarged view of the portion B in fig. 5.

Fig. 7: is a middle section view of the lamp housing in the utility model.

Fig. 8: the utility model relates to a top view of a PCB.

Fig. 9: a top view of the light diffusion plate of the present utility model.

In the figure: the LED lamp comprises a lamp shell, a 2-through groove, a 3-cavity, a 4-light-transmitting plate, a 5-opening, a 6-first slot, a 7-second slot, an 8-light diffusion plate, a 9-PCB (printed circuit board), 10-LED lamp beads, 11-side plates, 12-heat dissipation cavities, 13-heat dissipation fans, 14-dustproof heat dissipation nets, 15-through holes, 16-rubber sheets, 17-clamping grooves, 18-clamping blocks, 19-bolts, 20-mounting plates and 21-mounting holes.

Detailed Description

The following description of the embodiments of the present utility model will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which may be made by those skilled in the art without the inventive faculty, are intended to be within the scope of the present utility model, and in the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are directions or positional relationships based on the drawings, which are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or elements referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," "third," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying any particular importance in the description of the present utility model, but rather as being construed broadly as the terms "mounted," "connected," "coupled," or "connected" unless expressly specified or limited otherwise, e.g., as either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The utility model will now be described in further detail by way of specific examples of embodiments in connection with the accompanying drawings.

Embodiment one: as shown in fig. 1 to 7, the light source for machine vision tobacco leaf sorting comprises a lamp housing 1, wherein a through groove 2 penetrating through the thickness of the lamp housing 1 is formed in the middle of the lamp housing 1, and the through groove 2 is arranged to facilitate a camera for machine vision to collect tobacco leaf images. The lamp housing 1 and the through groove 2 are made of aluminum materials, the lamp housing 1 is of a back-shaped structure, the through groove 2 is of a rectangular or square structure, and the lamp housing 1 and the through groove 2 enclose a cavity 3.

The top surface of cavity 3 is light-transmitting plate 4, and light can be gone out by this light-transmitting plate 4 transmission, and light-transmitting plate 4 adopts toughened glass plate, and light-transmitting plate 4 bonds at the top of cavity 3 through glue.

Two of the corresponding sides of the cavity 3 are provided with openings 5, a first slot 6 and a second slot 7 are arranged in the lamp housing 1, the first slot 6 and the second slot 7 are perpendicular to the openings 5, the first slot 6 is located at the top of the second slot 7, and the first slot 6 and the second slot 7 are arranged in parallel. A pair of light diffusion plates 8 are inserted into the first slot 6, and the light diffusion plates 8 are conventional components in the prior art. The light diffusion plate 8 is used for dispersing light rays emitted by the LED lamp beads, so that the emitted light rays can obtain a uniform and stable diffuse illumination area. A pair of PCB (printed circuit board) 9 is inserted in the second slot 7, a plurality of LED lamp beads 10 are arranged on the PCB 9, the LED lamp beads 10 are welded on the PCB 4, and light emitted by the LED lamp beads 10 is transmitted out from the light-transmitting plate 4 after being diffused 8.

As shown in fig. 8 and 9, the light diffusion plate 8 and the PCB 9 have a concave structure.

The light diffusion plate 8 and the PCB 9 are installed in the upper cavity 3 in an inserting mode, the light diffusion plate 8 and the PCB 9 cannot interfere with each other during disassembly and assembly, and independent maintenance and replacement of the light diffusion plate 8 and the PCB 9 can be achieved.

The through groove 2 is arranged to facilitate the camera for machine vision to collect tobacco leaf images, the pair of PCB boards 9 are distributed around the periphery of the through groove 2 to form the lamp panels, and the light diffusion plate 8 is arranged to ensure that the emitted light can obtain a uniform and stable diffuse illumination area.

The opening 5 of the cavity 3 is covered with a side plate 11, wherein the opening 5 of the cavity 3 is provided with a clamping groove 17, the inner side surface of the side plate 11 is provided with a clamping block 18 which is matched and clamped with the clamping groove 17, the clamping block 18 and the side plate 11 are integrally formed, and four corners of the side plate 11 are fixedly connected with the opening 5 of the cavity 3 through bolts 19.

The PCB 9 encloses into heat dissipation chamber 12 with the bottom surface of lamp body 1, curb plate 11, is provided with heat dissipation mechanism in the heat dissipation chamber 12, sets up heat dissipation chamber and heat dissipation mechanism, conveniently discharges the heat that LED lamp pearl 10 produced in the cavity 3, increases the life of this light source.

Embodiment two: on the basis of the above embodiment, further, the heat dissipation mechanism includes a heat dissipation fan 13 and a dustproof heat dissipation net 14, the heat dissipation fan 13 and the dustproof heat dissipation net 14 are respectively installed on two other corresponding sides of the cavity 3, the heat dissipation fan 13 is at least four, four heat dissipation fans 13 are evenly distributed on the side of the cavity 3, a round hole is formed in the side of the cavity 3, the heat dissipation fan 13 is fixedly connected in the round hole through a bolt, the heat dissipation fan 13 is convenient to detach for maintenance or replacement, and the dustproof heat dissipation net 14 is directly and fixedly connected with the cavity 3 by welding. Because the LED lamp beads 10 can generate certain heat when emitting light, after the light source works for a period of time, the heat generated by the LED lamp beads 10 is discharged from the dustproof heat dissipation net 14 under the action of the heat dissipation fan 13, so that the heat dissipation effect is improved, and the service life of the light source is prolonged.

Embodiment III: on the basis of the above embodiment, further, the PCB 9 is provided with a power supply line, the end of the power supply line is provided with a plugging portion for plugging with an external power supply, wherein the PCB 9 and the power supply line and the plugging portion connected with the PCB 9 are both in the prior art, the plugging portion penetrates through the through hole 15 on the side plate 11 to be arranged, and after the PCB 9 is connected in the second slot 7, the power supply line and the plugging portion pipe through hole 15 are arranged to facilitate the energizing of the PCB 9.

The through-hole 15 inner edge is provided with a plurality of sheet rubber 16, and sheet rubber 16 passes through glue bonding in through-hole 15, and the middle part of a plurality of sheet rubber 16 encloses into the small round hole, and the diameter of small round hole matches with the diameter phase-match of power supply line, and when normal use, because a plurality of sheet rubber 16 hugs closely the power supply line not only plays the guard action to the power supply line, can play certain dustproof effect to through-hole 15 moreover.

Embodiment four: on the basis of the above embodiment, further, the side of the lamp housing 1 is provided with the mounting plate 20, the mounting plate 20 and the lamp housing 1 can be fixedly connected by welding, the mounting plate 20 is provided with the mounting hole 21, and the mounting plate 20 and the mounting hole 21 are provided, so that the light source can be conveniently mounted.

While the present utility model has been particularly shown and described with reference to a preferred embodiment, a number of methods and instrumentalities embodying the present utility model, the foregoing is merely a preferred embodiment of the present utility model, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. The utility model provides a machine vision is light source for tobacco leaf sorting, includes lamp body (1), its characterized in that, the middle part of lamp body (1) is provided with logical groove (2) that runs through its thickness, lamp body (1) with lead to groove (2) and enclose into cavity (3), the top surface of cavity (3) is light-transmitting plate (4), the side that two of cavity (3) correspond all is provided with opening (5), be provided with first slot (6) and second slot (7) in lamp body (1), first slot (6) second slot (7) with opening (5) looks perpendicular setting, peg graft in first slot (6) have a pair of light diffusion plate (8), a pair of PCB board (9) have been inserted in second slot (7), be equipped with a plurality of LED lamp pearl (10) on PCB board (9), opening (5) department of cavity (3) is covered and is closed curb plate (11), PCB board (9) with lamp body (1) bottom surface (11) enclose into heat dissipation mechanism (12) in cavity (12).

2. The machine vision tobacco leaf sorting light source according to claim 1, characterized in that the heat dissipation mechanism comprises a heat dissipation fan (13) and a dust-proof heat dissipation net (14), the heat dissipation fan (13) and the dust-proof heat dissipation net (14) being respectively mounted on the other two corresponding sides of the cavity (3).

3. The machine vision tobacco leaf sorting light source according to claim 2, characterized in that at least four of the cooling fans (13) are provided, the four cooling fans (13) being uniformly distributed on the side of the cavity (3).

4. The machine vision tobacco leaf sorting light source according to claim 1, characterized in that the PCB board (9) is provided with a power supply line, the end of the power supply line is provided with a plug-in part for plugging in with an external power supply, the plug-in part penetrates through a through hole (15) on the side plate (11), and the inner edge of the through hole (15) is provided with a plurality of rubber sheets (16).

5. The machine vision light source for tobacco leaf sorting according to claim 1, characterized in that a clamping groove (17) is arranged at the opening (5) of the cavity (3), a clamping block (18) which is matched and clamped with the clamping groove (17) is arranged on the inner side surface of the side plate (11), and four corners of the side plate (11) are fixedly connected at the opening (5) of the cavity (3) through bolts (19).

6. The machine vision tobacco leaf sorting light source of claim 1, wherein the light-transmitting plate (4) is a tempered glass plate.

7. The machine vision tobacco leaf sorting light source according to claim 1, wherein the lamp housing (1) is in a back-shaped structure, and the through groove (2) is in a rectangular or square structure.

8. The machine vision tobacco leaf sorting light source according to claim 1, wherein the light diffusion plates (8) and the PCB boards (9) are both in a concave structure, and a pair of the light diffusion plates (8) and a pair of the PCB boards (9) are all distributed around the periphery of the through groove (2).

9. The machine vision tobacco leaf sorting light source according to claim 1, characterized in that a mounting plate (20) is arranged on the side edge of the lamp housing (1), and a mounting hole (21) is formed in the mounting plate (20).