CN115463847A

CN115463847A - Visual detection device

Info

Publication number: CN115463847A
Application number: CN202110651135.4A
Authority: CN
Inventors: 罗起东
Original assignee: Guangdong Quandi Technology Co ltd
Current assignee: Guangdong Quandi Technology Co ltd
Priority date: 2021-06-10
Filing date: 2021-06-10
Publication date: 2022-12-13

Abstract

The invention provides a visual detection device, which comprises a dispersing mechanism and a detection mechanism, wherein the dispersing mechanism comprises a first conveying device and a second conveying device, the discharge end of the first conveying device is positioned at the upper part of the feeding end of the second conveying device, so that materials falling from the first conveying device fall on the feeding end of the second conveying device, and the conveying speed of the first conveying device is less than that of the second conveying device; the detection mechanism is positioned at the discharge end of the dispersion mechanism, and when the material falls from the discharge end of the dispersion mechanism, the detection mechanism detects the material; the visual detection device saves time and labor and has high detection efficiency.

Description

Visual detection device

Technical Field

The invention relates to the field of detection equipment, in particular to a visual detection device.

Background

In the production of many products, it is necessary to perform filling assembly, such as filling the package with a material. Nowadays, modern charging operation generally adopts automatic equipment, and the spare part or the product of waiting to feed all are accomplished the material loading by automatic charging devices, for improving productivity and efficiency, often need an action flow to accomplish dozens or even hundreds of products's material loading.

However, in the process of equipment operation, various factors exist, such as unstable equipment operation, error in material size, defect in material shape and the like, which inevitably cause the problem that some accidental materials fall off or parts are unqualified, so that the produced products have material shortage, and because the quantity of supplied materials is huge, if the supplied materials cannot be identified and removed one by one depending on manual work, once unqualified parts are not found and removed in time, the whole product is unqualified, so that the qualification rate and the quality of the products are affected, such as industrial products and agricultural and sideline products, and if one of the defects exists, the whole finished product is unqualified, so that a large economic loss is caused.

Aiming at the situations, manual inspection is mainly adopted in the industry at present, the labor cost is high when manual inspection is carried out, and people are needed to stare at the people at once, so that omission is difficult to avoid due to manual inspection, the operation of a machine is influenced once the omission occurs, and the problem of charging error cannot be guaranteed.

Disclosure of Invention

Accordingly, it is desirable to provide a visual inspection apparatus that saves time and labor and has high inspection efficiency.

In order to solve the technical problems, the invention provides a visual detection device, which comprises a dispersing mechanism and a detection mechanism, wherein the dispersing mechanism comprises a first conveying device and a second conveying device, the discharge end of the first conveying device is positioned at the upper part of the feeding end of the second conveying device, so that materials falling from the first conveying device fall on the feeding end of the second conveying device, and the conveying speed of the first conveying device is lower than that of the second conveying device; the detection mechanism is located at the discharge end of the dispersion mechanism, and when the material drops from the discharge end of the dispersion mechanism, the detection mechanism detects the material.

As a further improvement of the above embodiment, the dispersing mechanism further includes a third conveying device, the discharge end of the second conveying device is located above the feed end of the third conveying device, so that the material falling from the second conveying device falls on the feed end of the third conveying device, and the conveying speed of the second conveying device is lower than that of the third conveying device; the third conveying device comprises a driving wheel, a third conveying belt, a third support and blocking pieces, the driving wheel drives the third conveying belt to rotate, the blocking pieces are fixed on the third support and located on the upper portion of the third conveying belt, material channels are formed between every two adjacent blocking pieces, the width of each material channel is matched with the size of each material, the materials can only pass through the material channels in a preset direction, and falling channels are arranged on two sides of each blocking piece.

As a further improvement of the above embodiment, the visual inspection device further comprises a feeding device, a material recovery and conveying device is arranged at the lower part of the falling channel, the discharge end of the material recovery and conveying device extends to the feeding device, and the material falling from the falling channel is conveyed to the feeding device by the material recovery and conveying device.

As a further improvement of the above embodiment, the second conveying device includes a power device, a first driving wheel, a second driving wheel and a second conveying belt, the second conveying belt is wound around the first driving wheel and the second driving wheel, and a power output shaft of the power device is connected with the first driving wheel and/or the second driving wheel, so as to drive the driving belt to rotate around the first driving wheel and the second driving wheel; a channel divider is further fixed on the second conveying device and comprises a divider bracket and a divider body, the divider body is fixed on the divider bracket, a plurality of material channels are arranged on the divider body at intervals, and the width of each material channel is greater than that of one material and smaller than that of two materials; the divider body is also provided with a vibrator, the vibrator drives the divider body to vibrate, and a switch button is arranged on the vibrator; and/or the presence of a gas in the gas,

the first conveying device is a vibrating device, the vibrating device comprises a disc body and a vibrator, and the vibrator drives the disc body to vibrate.

As a further modification of the above embodiment.

As a further improvement of the above embodiment, the visual detection device includes a plurality of cameras and a control device, the plurality of cameras are electrically connected to the control device, and the plurality of cameras are distributed at the lower part of the discharge end of the dispersing mechanism.

As a further improvement of the above embodiment, the visual inspection device further includes a guide, the guide is located below the discharge end of the dispersing mechanism, the material falling from the dispersing device falls down after passing through the guide, and the lenses of the plurality of cameras face the discharge port of the guide or the lower portion of the discharge port; alternatively, the first and second liquid crystal display panels may be,

the falling device also comprises a guider, at least part of the guider is made of transparent materials, and a lens of the camera faces to the direction of the transparent part of the guider; alternatively, the first and second liquid crystal display panels may be,

the falling device further comprises a guider, the guider is positioned at the lower part of the discharge end of the dispersing mechanism, the guider comprises a first falling device, a second falling device, a first camera device and a second camera device, the first falling device and the second falling device are obliquely arranged, the material slides from the dispersing mechanism to a guide surface of the first falling device and then falls from the first falling device to a guide surface of the second falling device, an included angle of 30-100 degrees is formed between the moving direction of the first falling device and the advancing direction of the material on the dispersing mechanism, an included angle of 80-150 degrees is formed between the moving direction of the second falling device and the advancing direction of the material on the dispersing mechanism, so that the material turns over when falling from the first falling device to the guide surface of the second falling device, the material turns over from a first state to a second state, the first camera device is used for shooting the material in the first state, and the second camera device is used for shooting the material in the second state; alternatively, the first and second electrodes may be,

the device that drops still includes director and through-hole detection mechanism, the director includes second landing device and second camera device, the moving direction of material at the second landing device is rather than being in the advancing direction on the dispersion mechanism is 80-150 contained angles, through-hole detection mechanism includes that first through-hole detects the glide plane and the glide plane is detected to the second through-hole, through-hole detection mechanism is located the upper portion of director, just the second through-hole detects the glide plane and is close to the second landing device, the material is in the sliding direction of second through-hole detection glide plane is rather than being in advancing direction on the dispersion mechanism is 30-100 contained angles.

As a further improvement of the above embodiment, the visual inspection device further comprises a feeding device, the discharge end of the feeding device is located above the feed end of the first conveying device, the feed end of the feeding device is lower than the discharge end of the feeding device, and the conveying speed of the feeding device is lower than the transmission speed of the first conveying device.

As a further improvement of the embodiment, the feeding device comprises a feeding conveying device and a material containing container, the feeding conveying device penetrates through the material containing container, and the surface of the feeding conveying belt is arranged in a rugged manner.

As a further improvement of the above embodiment, the feeding conveyor includes a first feeding wheel, a second feeding wheel and a feeding conveyor belt, the feeding conveyor belt surrounds the first feeding wheel and the second feeding wheel, and a feeding section of the feeding conveyor belt penetrates through the material container.

As a further improvement of the above embodiment, the visual inspection device further comprises a classification mechanism and a control device, wherein the classification mechanism is connected with the control device, data information detected by the detection mechanism is transmitted to the control device, and the control device controls the classification mechanism to classify the materials according to prestored information; and/or the presence of a gas in the gas,

the visual detection device also comprises a through hole detection mechanism, wherein the through hole detection mechanism comprises a first through hole detection sliding surface and a second through hole detection sliding surface, the second through hole detection sliding surface inclines downwards, the through hole detection mechanism also comprises a position detection camera device and a through hole visual detection device, a lens of the position detection camera device faces the first through hole detection sliding surface, and the position visual detection device is used for detecting through holes of materials on the second through hole detection sliding surface; the second through hole visual detection device comprises an irradiation light source, a light receiving plate and a detection piece, wherein the irradiation light source and the light receiving plate are respectively positioned on two sides of the second through hole detection sliding surface and are arranged oppositely, the irradiation light source faces to materials positioned on the second through hole detection sliding surface, and the detection piece is used for detecting whether a transmission light spot exists on the light receiving plate; and a rejecting device is further arranged on one side of the first through hole detection sliding surface and is connected with the position detection camera device, and the rejecting device is controlled by a signal detected by the position detection camera device to reject materials which do not conform to a preset direction.

The visual detection device is provided with the first conveying device and the second conveying device, the conveying speed of the first conveying device is lower than that of the second conveying device, dense materials can be dispersed, and the visual detection device detects the materials in the process that the materials fall from the dispersing mechanism, so that automatic visual detection is realized, manpower and material resources are saved, and the efficiency is high.

Drawings

The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of preferred embodiments of the invention, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intended to be drawn to scale in actual dimensions, emphasis instead being placed upon illustrating the principles of the invention.

FIG. 1 is a schematic diagram of a visual inspection apparatus according to a preferred embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a visual inspection apparatus according to another preferred embodiment of the present invention;

fig. 3 and 4 are schematic structural views of a visual inspection device according to still another preferred embodiment of the present invention;

FIG. 5 is a schematic top view of a portion of a second conveyor of the present invention;

FIG. 6 is a schematic top view of a third conveying device according to the present invention;

FIG. 7 is a schematic diagram of the visual inspection mechanism of FIG. 3;

FIG. 8 is a schematic view of the visual inspection mechanism of FIG. 4;

fig. 9 is a schematic structural diagram of a visual inspection mechanism according to another embodiment of the present invention.

In the figure: 1. a detection mechanism; 11. a camera; 12. a guide; 13. a first falling device; 131. a first image pickup device; 14. a second falling device; 141. a second camera device; 2. a dispersing mechanism; 21. a first conveying device; 22. a second conveying device; 221. a first drive pulley; 222. a second transmission wheel; 223. a second conveyor belt; 23. a third transfer device; 231. a third conveyor belt; 232. a third support; 233. a stopper; 234. a drop channel; 3. a channel divider; 31. a divider support; 32. a divider body; 321. a material channel; 4. a feeding device; 41. a feeding and conveying device; 411. a first feeding wheel; 412. a second feeding wheel; 413. a feeding conveyor belt; 42. a material container; 5. a sorting mechanism; 51. an automatic valve; 52. a channel; 6. a material recovery and conveying device; 7. a through hole detection mechanism; 71. a first through hole detects the sliding surface; 72. a second through hole detection sliding surface; 73. a position detection camera device; 74. a detection member; 75. an illumination source; 76. and (6) connecting with a light plate.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element and be integral therewith, or intervening elements may also be present. The terms "mounted," "one end," "the other end," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-9, the present invention provides a visual inspection apparatus, which includes a dispersing mechanism 2 and an inspection mechanism 1, wherein the dispersing mechanism 2 includes a first conveyor 21 and a second conveyor 22, a discharge end of the first conveyor 21 is located above a feed end of the second conveyor 22, so that a material dropped from the first conveyor 21 falls on the feed end of the second conveyor 22, a conveying speed of the first conveyor 21 is lower than a conveying speed of the second conveyor 22, and the conveying speed of the first conveyor 21 is lower than the conveying speed of the second conveyor 22, so that the material dropped on the second conveyor 22 can be separated by a distance along a driving direction of the second conveyor 22, so that the material is dispersed, and the subsequent inspection is facilitated. Detection mechanism 1 is located the discharge end of dispersion mechanism 2, and when the material dropped from the discharge end of dispersion mechanism 2, detection mechanism 1 detected the material, and the material dropped the in-process from the discharge end of dispersion mechanism 2, and the material does not have other objects to block, and detection mechanism can be comprehensive detects the material.

Referring to fig. 5, as a further modification of the above embodiment, the second conveying device 22 includes a power device, a first driving wheel 221, a second driving wheel 222 and a second conveying belt 223, the second conveying belt 223 is wound around the first driving wheel 221 and the second driving wheel 222, and a power output shaft of the power device is connected to the first driving wheel 221 and/or the second driving wheel 222, so as to drive the driving belts to rotate around the first driving wheel 221 and the second driving wheel 222. Specifically, the power device is a motor, and the motor is connected with a speed reducer, and the speed reducer is connected with the first driving wheel 221 and/or the second driving wheel 222. Still be fixed with passageway decollator 3 on second conveyer 22, passageway decollator 3 includes decollator support 31 and decollator body 32, and decollator body 32 is fixed on decollator support 31, and the interval is provided with a plurality of material passageway 321 on the decollator body 32, and the width of material passageway 321 is greater than the width of a material, and is less than the width of two materials, guarantees to pass through a material smoothly at every turn, avoids the material transverse direction too densely. Specifically, the separator includes a plurality of partition plates, and a plurality of material passageway 321 is cut apart to the partition plate, and further, the partition plate slope sets up, and the extending direction of partition plate and the moving direction of second conveyer belt 223 have the contained angle, avoids the material to be blocked on the baffle. The material is dispersed on the second conveyor 22 and, due to the channel divider 3, the material passing through the second conveyor 22 is aligned, so that the moving direction of the material is the same as the conveying direction of the second conveyor 223, and the material is prepared to pass through the third conveyor 23 smoothly. The divider body 32 is further provided with a vibrator, the vibrator drives the divider body 32 to vibrate, and the vibrator is provided with a switch button, so that the divider can be selectively switched on or switched off as required during use.

As the further improvement of the above embodiment, still be provided with the electromagnetic shaker on the decollator body 32, the electromagnetic shaker drives decollator body 32 vibrations, and dispersion effect is better, can also avoid the material to be blocked by decollator body 32.

In another embodiment, the first transmission device is a vibrator, the vibrator comprises a disc body and a vibrator, the vibrator drives the disc body to vibrate, and a switch button is arranged on the vibrator to select whether to use the vibrator according to requirements. The materials are dispersed and then fall onto the second conveying device.

Referring to fig. 6, as a further modification of the above embodiment, the dispersing mechanism 2 further includes a third conveyor 23, the discharge end of the second conveyor 22 is located above the feed end of the third conveyor 23, so that the material dropped from the second conveyor 22 falls on the feed end of the third conveyor 23, and the conveying speed of the second conveyor 22 is lower than that of the third conveyor 23. The third conveying device 23 disperses the materials again, so that the dispersion degree of the materials is larger, and the subsequent detection is more convenient. Specifically, the third conveying device 23 includes a plurality of sets of driving wheels, a third conveyor belt 231, a third support 231, and a blocking member 233, where the plurality of sets of driving wheels are provided, each set of driving wheels includes at least two driving wheels, and the two driving wheels drive one third conveyor belt 231 to rotate. The blocking part 233 is fixed on the third support 232 and located on the upper portion of the third conveyor belt 231, the blocking part 233 is close to the edge of the third conveyor belt 231, a material channel is formed between adjacent blocking parts 233, the width of the material channel is matched with the size of the material, so that the material can only pass through the material channel in a preset direction, for example, the material is a bamboo chip of a mahjong mat, a detection mechanism of the visual detection device 1 needs a structure that the moving direction of the bamboo chip is consistent with the length direction for detection, so that the width of the material channel can be set to be the width of the bamboo chip, so that only the bamboo chip with the moving direction being consistent with the length direction can pass through the material channel, and the blocking part 233 which cannot pass through can be blocked. The blocking member 233 is provided at both sides with falling passages 234, and the blocked materials (e.g., bamboo chips) fall from the falling passages 234.

As a further improvement of the above embodiment, the visual inspection device further comprises a feeding device 4, a material recovery and conveying device 6 is arranged at the lower part of the falling channel 234, the discharge end of the material recovery and conveying device 6 extends to the feeding device, and the material falling from the falling channel 234 is conveyed to the feeding device 4 by the material recovery and conveying device 6. The material falling from the falling channel 234 cannot be detected because of its direction, and the material reclaim conveyor 6 conveys this portion of material back to the feeder 4, which feeds it back for detection.

Referring to fig. 1 and 2, as a further improvement of the above embodiment, the visual inspection device includes a plurality of cameras 11 and a control device, the plurality of cameras 11 are electrically connected to the control device, the plurality of cameras 11 are distributed at a lower portion of the discharge end of the dispersing mechanism 2, the cameras 11 are used for taking pictures of dropped materials, the pictures are transmitted to the control device after being discharged, and the control device analyzes whether the materials are qualified according to a preset program.

As a further improvement of the above embodiment, the visual inspection device further includes a guide 12, the guide 12 is located at a lower portion of the discharging end of the dispersing mechanism 2, the material dropped from the dispersing device falls down after passing through the guide 12, and the lenses (referring to the image capturing positions of the cameras 11) of the cameras 11 face the discharging port of the guide 12 or the lower portion of the discharging port, so that the material can be captured without being blocked, and the inspection effect is better.

As a further improvement of the above embodiment, the falling device further includes a guide 12, at least a portion of the guide 12 is made of a transparent material, a lens of the camera 11 faces the direction of the transparent portion of the guide 12, the transparent material may be transparent glass or transparent acrylic, and the lens of the camera 11 may photograph the material through the transparent material and then perform detection.

Referring to fig. 3 and 7, as a further modification of the above embodiment, a guide is provided at a lower portion of the discharge end of the dispersing mechanism 2, the guide including a first chute 13, a second chute 14, a first camera 131, and a second camera 141. The first sliding device 13 and the second sliding device 14 are obliquely arranged, and the material slides to the guide surface of the first sliding device 13 from the dispersing mechanism 2 and then falls to the guide surface of the second sliding device 14 from the first sliding device 13. The moving direction of the material on the first falling device 13 forms an angle of 30-100 degrees with the advancing direction of the material on the dispersing mechanism 2, further, the angle is 60-80 degrees, and preferably, the moving direction of the material on the first falling device 13 forms an angle of 75 degrees with the advancing direction of the material on the dispersing mechanism 2; the moving direction of the material on the second falling device 14 forms an angle of 80 ° to 150 ° with the advancing direction thereof on the dispersing mechanism 2, further the angle is 100 ° to 120 °, preferably the moving direction of the material on the second falling device 14 forms an angle of 105 ° with the advancing direction thereof on the dispersing mechanism 2; the material is turned over from the first falling device 13 to the guide surface of the second falling device 14, so that the material is turned over from the first state to the second state, the first camera device is used for shooting the material in the first state, the second camera device is used for shooting the material in the second state, and it should be noted that the first state and the second state are two states in which the same material can expose different surfaces. When the materials (such as bamboo chips of the mahjong summer sleeping mat) are turned over and are arranged on the first sliding device 13 and the second sliding device 14, different surfaces can be exposed, two surfaces of the materials can be detected conveniently, the materials which are arranged on the first sliding device 13 and the second sliding device 14 can be shot, the materials which are not arranged on the first sliding device 13 and the second sliding device 14 (in the air) can also be shot, and the protection range of the mahjong summer sleeping mat can be reached if the materials under two different states are shot (the materials can be exposed out of the two different surfaces). The lens of the first camera 131 faces the guiding surface of the first sliding device 13 to perform photo detection on one surface of the material (such as bamboo chips of a mahjong mat), and the lens of the second camera 141 faces the guiding surface of the second sliding device 14 to perform photo detection on the other surface of the material (such as bamboo chips of a mahjong mat). When polygonal materials (such as hexagonal rods) are detected, in a first state, one surface of the hexagonal rod faces the first sliding device 13 or is in contact with the first sliding device 13, and in a second state, a second surface of the hexagonal rod faces the second sliding device 14 or is in contact with the second sliding device 14; of course, a third sliding device or a fourth sliding device may be further included to enable the material to be in a third state or a fourth state, so that the shooting device can shoot more materials in different states. Further, the first falling device 13 and the second falling device 14 both comprise a transmission wheel and a conveyor belt, the rotation speed of the conveyor belt of the first falling device 13 is relatively high, generally 0.01-2m/s, preferably 0.5-1.5m/s, so as to ensure that the material can be smoothly turned over when falling from the first falling device 13 to the second falling device 14.

Referring to fig. 1 to 4, as a further improvement of the above embodiment, the visual inspection apparatus further includes a feeding device 4, a discharging end of the feeding device 4 is located above a feeding end of the first conveying device 21, the feeding end of the feeding device 4 is lower than the discharging end thereof, a conveying speed of the feeding device 4 is lower than a driving speed of the first conveying device 21, and the first conveying device 21 disperses the material.

As a further improvement of the above embodiment, the feeding device 4 includes a feeding conveyer 41 and a material container 42, the feeding conveyer 41 penetrates the material container 42, the surface of the feeding conveyor belt 413 is uneven, and when the feeding conveyer 41 passes through the material container 42, the feeding conveyor belt 413 is taken out and conveyed to the first conveyer 21.

As a further improvement of the above embodiment, the feeding conveyor 41 includes a first feeding wheel 411, a second feeding wheel 412 and a feeding conveyor belt 413, the feeding conveyor belt 413 surrounds the first feeding wheel 411 and the second feeding wheel 412, and a feeding section of the feeding conveyor belt 413 penetrates through the material container 42. The feeding section is a section of the conveyor belt 223 on which material is located during operation of the feeding conveyor belt 413.

Referring to fig. 1 to 4, as a further improvement of the above embodiment, the visual inspection apparatus further includes a sorting mechanism 5 and a control device, the sorting mechanism 5 is connected to the control device, data information detected by the detection mechanism 1 is transmitted to the control device, and the control device controls the sorting mechanism 5 to sort the materials according to pre-stored information. Specifically, the sorting mechanism 5 includes an automatic valve 51 and a plurality of passages 52, the passages 52 are communicated with the automatic valve 51, the automatic valve 51 is electrically connected with a control device, and the control device controls the automatic valve 51 to open and close, so that different types of materials fall into the different passages 52. The electromagnetic valve is an air valve or an electromagnetic valve.

Referring to fig. 9, as a further improvement of the above embodiment, the falling device further comprises a guide and a through hole detection mechanism 7, the guide comprises a second falling device 14 and a first camera 142, the moving direction of the material on the second falling device 14 is at an angle of 80 ° to 150 ° to the advancing direction on the dispersing mechanism 2, the through hole detection mechanism 7 comprises a first through hole detection sliding surface 71 and a second through hole detection sliding surface 72, the through hole detection mechanism 7 is located at the upper part of the guide, the second through hole detection sliding surface 72 is close to the second falling device 14, the sliding direction of the material on the second through hole detection sliding surface 72 is at an angle of 30 ° to 100 ° to the advancing direction on the dispersing mechanism 2, and further, the angle is 60 ° to 80 °.

Referring to fig. 4 and 7, as a further modification of the above embodiment, the visual inspection apparatus further includes a through-hole detection mechanism 7, the through-hole detection mechanism 7 includes a first through-hole detection sliding surface 71 and a second through-hole detection sliding surface 72, the second through-hole detection sliding surface 72 is inclined downward to facilitate detection of a through-hole in the material, and further, the second through-hole detection sliding surface 72 is inclined downward at an angle of 30 ° to 60 °. The through hole detection mechanism 7 further comprises a position detection camera device 73 and a through hole visual detection device, the position detection camera device 73 and the through hole visual detection device are connected with the control device, and a lens of the position detection camera device 73 faces the first through hole detection sliding surface 71 and is used for detecting whether the position of the material meets the requirements or not. The through hole visual detection device is used for detecting a through hole of a material on the second through hole detection sliding surface 72, the position detection camera device 73 is used for shooting the material on the first through hole detection sliding surface 71, whether the direction of the detected material (such as bamboo chips for a mahjong mat) is proper or not is detected, whether a through hole is formed in the detected material by the through hole visual detection device or not is prepared, if the direction of the material is proper, whether the through hole is formed in the detected material by the through hole visual detection device or not can be detected by the through hole visual detection device, and otherwise, the detection result of the through hole visual detection device is inaccurate.

In a further preferred embodiment, the second through hole visual inspection device includes an irradiation light source 75, a light receiving plate 76 and a detection element 74, the irradiation light source 75 and the light receiving plate 76 are respectively located on two sides of the second through hole detection sliding surface 72, and are arranged oppositely, the irradiation light source 75 faces the material located on the second through hole detection sliding surface 72, and the detection element 74 is used for detecting whether there is a transmission light spot on the light receiving plate 76. Specifically, the detecting member 74 may be a sensor or an imaging device. For example, in the detection of a bamboo piece of a mat for mahjong, if a through hole through which a connection line passes is provided in the bamboo piece, light from the light source 75 can be projected onto the light receiving plate 76 through the through hole to form a light spot, and the detection piece 74 passes the bamboo piece if the light spot is detected, and fails if the light spot is not detected.

In a further preferred embodiment, a rejecting device is further arranged on one side of the first through hole detection sliding surface and connected with a position detection camera device, and a signal detected by the position detection camera device controls the rejecting device to reject materials which do not conform to the preset orientation. Specifically, the removing device is an air valve which can blow off unqualified materials; the removing device can also be a mechanical arm which takes off unqualified materials.

The visual detection device is provided with the first conveying device 21 and the second conveying device 22, the conveying speed of the first conveying device 21 is lower than that of the second conveying device 22, dense materials can be dispersed, and the visual detection device detects the materials in the process that the materials fall off from the dispersing mechanism 2, so that automatic detection is achieved, manpower and material resources are saved, and efficiency is high.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "preferred embodiment," "yet another embodiment," "other embodiments," or "specific examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are exemplary and should not be construed as limiting the present application and that changes, modifications, substitutions and alterations in the above embodiments may be made by those of ordinary skill in the art within the scope of the present application.

Claims

1. A visual detection device is characterized by comprising a dispersing mechanism and a detection mechanism, wherein the dispersing mechanism comprises a first conveying device and a second conveying device, the discharge end of the first conveying device is positioned at the upper part of the feeding end of the second conveying device, so that materials falling from the first conveying device fall on the feeding end of the second conveying device, and the conveying speed of the first conveying device is lower than that of the second conveying device; the detection mechanism is located at the discharge end of the dispersion mechanism, and when the material drops from the discharge end of the dispersion mechanism, the detection mechanism detects the material.

2. The visual inspection device of claim 1, wherein the second conveyor comprises a power unit, a first transmission wheel, a second transmission wheel, and a second transmission belt, the second transmission belt being looped around the first transmission wheel and the second transmission wheel, a power output shaft of the power unit being connected to the first transmission wheel and/or the second transmission wheel, thereby driving the transmission belt to rotate around the first transmission wheel and the second transmission wheel; the second conveying device is also fixedly provided with a channel divider, the channel divider comprises a divider bracket and a divider body, the divider body is fixed on the divider bracket, a plurality of material channels are arranged on the divider body at intervals, the width of each material channel is larger than that of one material and smaller than that of two materials, the divider body is also provided with a vibrator, the vibrator drives the divider body to vibrate, and the vibrator is provided with a switch button; and/or the presence of a gas in the atmosphere,

3. The visual inspection device of claim 1, wherein the dispensing mechanism further comprises a third conveyor, the discharge end of the second conveyor being positioned above the feed end of the third conveyor such that material falling from the second conveyor falls onto the feed end of the third conveyor, the second conveyor having a lower conveying speed than the third conveyor; the third conveying device comprises a driving wheel, a third conveying belt, a third support and blocking pieces, the driving wheel drives the third conveying belt to rotate, the blocking pieces are fixed on the third support and located on the upper portion of the third conveying belt, a material channel is formed between every two adjacent blocking pieces, the width of the material channel is matched with the size of the material, the material can only pass through the material channel in a preset direction, and falling channels are arranged on two sides of each blocking piece.

4. The vision inspection device of claim 3, further comprising a loading device, wherein a material recovery conveyor is provided at a lower portion of the drop channel, a discharge end of the material recovery conveyor extends to the loading device, and material falling from the drop channel is conveyed by the material recovery conveyor to the loading device.

5. The visual inspection device of claim 1, wherein the visual inspection device comprises a plurality of cameras and a control device, the plurality of cameras being electrically connected to the control device, the plurality of cameras being distributed below the discharge end of the dispensing mechanism.

6. The visual inspection device of claim 5, further comprising a guide positioned below the discharge end of the dispersion mechanism, wherein the material falling from the dispersion mechanism falls through the guide, and wherein the lenses of the plurality of cameras face the discharge opening of the guide or a lower portion of the discharge opening; alternatively, the first and second electrodes may be,

the falling device also comprises a guider, at least part of the guider is made of transparent materials, and a lens of the camera faces to the direction of the transparent part of the guider; alternatively, the first and second electrodes may be,

7. The visual inspection device of claim 1, further comprising a loading device, wherein the discharge end of the loading device is located above the feed end of the first conveyor, the loading end of the loading device is lower than the discharge end of the loading device, and the conveying speed of the loading device is less than the driving speed of the first conveyor.

8. The visual inspection device of claim 7, wherein the loading device comprises a loading conveyor and a container, the loading conveyor extends through the container, and the surface of the loading conveyor is uneven.

9. The visual inspection device of claim 7, wherein the loading conveyor comprises a first loading wheel, a second loading wheel, and a loading conveyor belt, the loading conveyor belt is wound around the first loading wheel and the second loading wheel, and a loading section of the loading conveyor belt penetrates through the material container.

10. The visual inspection device of claim 1, further comprising a sorting mechanism and a control device, wherein the sorting mechanism is connected to the control device, data information detected by the detection mechanism is transmitted to the control device, and the control device controls the sorting mechanism to sort the materials according to pre-stored information; and/or the presence of a gas in the gas,

the visual detection device also comprises a through hole detection mechanism, wherein the through hole detection mechanism comprises a first through hole detection sliding surface and a second through hole detection sliding surface, the second through hole detection sliding surface inclines downwards, the through hole detection mechanism also comprises a position detection camera device and a through hole visual detection device, a lens of the position detection camera device faces the first through hole detection sliding surface, and the position visual detection device is used for detecting a through hole of a material on the second through hole detection sliding surface; the second through hole visual detection device comprises an irradiation light source, a light receiving plate and a detection piece, wherein the irradiation light source and the light receiving plate are respectively positioned on two sides of the second through hole detection sliding surface and are arranged oppositely, the irradiation light source faces to materials positioned on the second through hole detection sliding surface, and the detection piece is used for detecting whether a transmission light spot exists on the light receiving plate; and a rejecting device is further arranged on one side of the first through hole detection sliding surface and is connected with the position detection camera device, and the rejecting device is controlled by a signal detected by the position detection camera device to reject materials which do not conform to a preset direction.