CN220825143U - Automatic inspection and sorting device for light guide grids - Google Patents

Abstract

The utility model provides an automatic inspection and sorting device for a light guide grid, which comprises a rotary driving mechanism, wherein a rotary disk is fixedly arranged on an output shaft of the rotary driving mechanism, a camera is arranged above the rotary disk, the camera can shoot the light guide grid positioned on the rotary disk, a feeding mechanism is arranged on one side of the rotary disk, and the feeding mechanism can place the light guide grids on the rotary disk one by one to be detected; two linear driving mechanisms are fixed at intervals on two sides of the rotary driving mechanism, and each linear driving mechanism is correspondingly provided with a slide way which is obliquely arranged. According to the utility model, the light guide grating arranged on the rotating disc is photographed through the camera, and then the sample wafer stored in the image processor in advance is compared with the photo of the light guide grating to be detected, so that whether the light guide grating to be detected is a qualified product or not can be rapidly and accurately judged; and the automatic sorting of good products and defective products is realized through the rotary disk and the two discharging cylinders.

Description

Automatic inspection and sorting device for light guide grids

Technical Field

The utility model relates to the technical field of automatic detection, in particular to an automatic inspection and sorting device for a light guide grid.

Background

The light guide grille is used as a carrier for guiding light rays and has the functions of light beam and light ray transmission. When the LED lamp is applied to an automobile, the LED lamp is arranged at the light-passing hole of the inner decorative panel, and the light of the miniature LED lamp on the electronic substrate covered by the inner decorative panel is conducted to the light-passing hole of the panel, so that the outside can change or be on or off in brightness color represented by the light-passing hole, and the working state of the electronic substrate is observed.

The light guide grille is produced and molded by injection molding, and in the molding process, bubbles and impurities often exist in the molded light guide grille due to the difference of molding conditions or the influence of other factors. Bubbles or impurities can change the propagation direction of light and reduce light transmittance, so that the brightness effect of a light passing hole of a panel can be influenced, and the use experience is influenced, so that whether bubbles and impurities exist or not is required to be detected before delivery.

At present, a visual inspection mode is adopted before the light guide grating leaves a factory, and obvious defects exist. Firstly, each person holds, understands and judges the detection standard differently, and different people can judge the same light guide grating completely differently; secondly, because its volume is less, only rely on the manual work to go screening inspection, not only waste time and energy, the inspector is easy because visual fatigue to cause to miss to judge, misjudge, thereby have the risk that leads to the defective products to flow out.

Disclosure of utility model

In view of the above, the present utility model provides an automatic inspection and sorting device for a light guide grating disposed on a rotating disc, which photographs the light guide grating by a camera, and compares a sample wafer stored in an image processor in advance with a photograph of the light guide grating to be inspected, thereby rapidly and accurately judging whether the light guide grating to be inspected is a qualified product; and the automatic sorting of good products and defective products is realized through the rotary disk and the two discharging cylinders.

For this purpose, the application provides the following technical scheme: the automatic inspection and sorting device for the light guide grids comprises a rotary driving mechanism, wherein a rotary disc is fixedly arranged on an output shaft of the rotary driving mechanism, a camera is arranged above the rotary disc, the light guide grids on the rotary disc can be shot by the camera, a feeding mechanism is arranged on one side of the rotary disc, and the light guide grids can be placed on the rotary disc one by one to be detected by the feeding mechanism; two linear driving mechanisms are fixed at intervals on two sides of the rotary driving mechanism, each linear driving mechanism is correspondingly provided with a slide way which is obliquely arranged, the moving part of each linear driving mechanism can transfer the light guide grating from the rotary disk to the corresponding slide way, and the tail end of each slide way is provided with a container which can collect the light guide grating sliding from the slide way; the device also comprises an electric control module, the electric control module mainly comprises an image processor and a circuit controller, a sample of the OK product of the light guide grating is pre-stored in the image processor, the image processor can compare the picture of the light guide grating shot by the camera with the sample and then send a signal of the OK product or the NG product to the circuit controller, and the circuit controller can send an electric signal for starting and stopping to the rotary driving mechanism after receiving the signal and send an action signal to one of the linear driving mechanisms, thereby realizing the separation of the OK product and the NG product.

Further, the linear driving mechanism is a linear cylinder, a scraping plate is arranged at the free end of a piston rod of the linear cylinder, and the scraping plate can scrape a light guide grid on the rotating disc into a slideway when the piston rod retracts.

Further, the rotation driving mechanism is a stepping motor.

Further, the feeding mechanism comprises a conveyor belt conveyor, the conveyor is arranged on one side of the rotating disc, two guide plates are arranged above the conveyor belt, and a passage for the light guide grating to pass is formed between the two guide plates; the belt is opposite to the other side of the rotating disc, a pushing cylinder is arranged outside the tail end of the channel, the free end of a piston rod of the pushing cylinder is fixedly connected with a pushing plate, and when the piston rod of the pushing cylinder stretches out, the pushing plate can push a light guide grid moving to the position along with the belt to the rotating disc; the tail end of the channel is provided with a photoelectric switch capable of sensing whether the light guide grating passes through the channel, the upper end of the tail part of the guide plate is fixedly provided with a blocking cylinder, and a piston rod of the blocking cylinder can block the light guide grating in the channel when extending out, so that intermittent feeding of the conveyor is realized; the photoelectric switch can send out an electric signal to the circuit controller, and the circuit controller can control the extension or contraction of piston rods of the pushing cylinder and the blocking cylinder through the electromagnetic valve group after receiving the electric signal sent out by the photoelectric switch.

Further, the rotary disk is transparent, an annular light emitter capable of emitting colored light is arranged at the lower part of the rotary disk, and the colored light emitted by the light emitter penetrates through the rotary disk and then can supplement light to a light guide grid arranged on the rotary disk.

Further, the automatic inspection and sorting device of the light guide grating further comprises a first display screen and a second display screen which are electrically connected with the electric control module; the first display screen can display the running and controlling states and statistical results of the device, and the second display screen is used for setting detection parameters of the camera.

Furthermore, the front ends of the two guide plates are provided with inclined planes, and the two opposite inclined planes form a splayed guide opening which is convenient for the light guide grid to enter.

Further, the photoelectric switch is an optical fiber correlation switch, and a transmitting part and a receiving part of the optical fiber correlation switch are respectively embedded in guide plates at two sides of the channel.

Further, the light emitter is a ring-shaped LED lamp capable of emitting a red light source.

The utility model has the following advantages:

1. According to the utility model, the photo to be detected on the rotary table is photographed by using the camera, the photographed photo is compared with the good sample wafer prestored in the image processor, so that whether the photo is qualified or not is judged, then the comparison result is used as an input signal of the circuit controller, OK products or NG products are respectively transferred to the corresponding collecting containers by the two linear driving mechanisms connected with the circuit controller, so that automatic cycle inspection and sorting are completed, an operator only needs to put the transparent photo on the feeding mechanism, the personnel is not required to input vision inspection, the labor is saved, and the phenomena of disc leakage and misjudgment are avoided.

2. The rotating disk is driven by a stepping motor, and can be accurately positioned under the control of the circuit controller, so that the rotating disk can be stopped at a required position according to the setting.

3. Through setting up photoelectric switch, blocking cylinder and pushing cylinder on the conveyer belt conveyer, utilize photoelectric switch and circuit controller to realize intermittent type nature pay-off, avoid waiting to examine the piling up of light guide grid on the rotary disk effectively.

4. The rotary disk is made of transparent materials, and the illuminator capable of realizing light supplementing of the light guide grille to be detected is arranged below the rotary disk, so that pictures shot by the camera are clearer, and the detection accuracy is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to the drawings without inventive effort to a person skilled in the art.

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a front view of fig. 1.

Fig. 3 is a top view of fig. 2.

Fig. 4 is a schematic diagram of the operation of the present utility model.

In the figure: 1. a case; 2. a plastic bag; 3. NG article discharging cylinder; 4. a stepping motor; 5. a light emitter; 6. a slideway; 7. OK product discharging cylinder; 8. a scraping plate; 9. a rotating disc; 10. a bracket; 11. a camera; 12. an optoelectronic switch; 13. a pushing plate; 14. a blocking cylinder; 15. a first display screen; 16. a second display screen; 17. a guide plate; 18. a pushing cylinder; 19. a rotating electric machine; 20. a channel; 20.1, a guide port; 21. a light guide grid; 22. a conveyor; 23. an air switch; 24. an AC/DC converter; 25. an image processor; 26. a circuit action controller; 27. a normally open intermediate relay; 28. an electromagnetic valve; 29. a proximity switch; 30. a column; 31. a normally closed intermediate relay.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

OK articles mentioned herein, i.e. acceptable articles of the light guide grid; NG article, namely the defective products of leaded light grid.

The utility model provides an automatic checking and sorting device for a transparent light guide grille, which comprises a box body 1, wherein an upright post 30 is fixedly arranged on the end surface of the right upper corner of the box body, and two touch display screens are hung on the upright post. The first display screen 15 located above can display the running and controlling states of the device and statistics results, and the second display screen 16 located below is used for setting the detection parameters of the camera. A small-sized conveyer belt 22 is fixedly arranged in the middle of the upper end face of the box body, a rotating motor 19 for driving the conveyer belt to run is arranged on a frame body on the right side of the conveyer belt, two long-strip-shaped guide plates 17 made of POM materials are fixedly arranged at the upper end of the conveyer belt, and a channel 20 for a light guide grid 21 to pass through is formed between the two guide plates and the belt. Note that: the guide plate cannot be contacted with the belt, a small gap is required to be reserved between the guide plate and the belt, and the height of the gap is required to be smaller than the thickness of the light guide grid so as to prevent the light guide grid from sliding out from between the belt and the guide plate; preferably, inclined planes are formed at the front ends of the two guide plates, and the two opposite inclined planes form an out-splayed guide opening 20.1, so that the light guide grating can smoothly enter the channel. A blocking cylinder 14 is fixedly arranged at the upper end of the tail part of the guide plate, and a piston rod of the blocking cylinder can block the light guide grille in the channel when extending out; the tail end of the channel is provided with a photoelectric switch 12, the photoelectric switch adopts an optical fiber correlation switch, the transmitting part and the receiving part of the optical fiber correlation switch are respectively embedded in guide plates at two sides of the channel, and the optical fiber correlation switch can detect whether a light guide grating passes through the channel or not; a pushing cylinder 18 is arranged on the box body on the right side of the tail part of the belt, the free end of a piston rod of the pushing cylinder is fixedly connected with a pushing plate 13, and when the piston rod of the pushing cylinder stretches out, the pushing plate can push out the light guide grille moving to the position along with the belt; a stepping motor 4 is fixed on the upper end face of the box body on the left side of the belt, a round rotating disc 9 made of transparent materials is fixed on the output shaft of the stepping motor, as shown in fig. 1 and 3, the edge of the rotating disc and the belt are in non-contact smooth transition, and no boss and large gap exist, so that a light guide grid on the belt can be smoothly pushed to the edge of the rotating disc by a pushing plate. In this embodiment, the rotating disk is made of colorless and transparent PMMA. An annular illuminator 5 capable of emitting colored light is sleeved on the outer side surface of the stepping motor body, and an annular LED lamp capable of emitting a red light source is adopted in the utility model, and the red light emitted by the LED lamp can penetrate through the rotating disk. An OK article discharging cylinder 7 and an NG article discharging cylinder 3 are respectively fixed above the upper end surfaces of the left side and the front side of the stepping motor, and the free ends of the piston rods of the OK article discharging cylinder and the NG article discharging cylinder are fixedly connected with a scraping plate 8. U-shaped slide ways 6 which are obliquely arranged are respectively arranged on the box bodies at the piston rod sides of the OK product discharging cylinder and the NG product discharging cylinder, and a plastic bag 2 for storing OK products and NG product light guide grids is respectively hung at the edges of the box bodies at the tail ends of the slide ways. A bracket 10 is fixed on the upper left corner of the upper end face of the box body, namely the box body positioned on the side of the rotary disk, a camera 11 for inspection is arranged on the upper part of the bracket, and the lens of the camera is downwards arranged, so that a light guide grid positioned on the rotary disk can be shot when the camera works.

Note that: as shown in fig. 1, 2 and 3, the bottoms of the piston rods of the OK product discharging cylinder and the NG product discharging cylinder are higher than the upper end surface of the rotating disc, and the distance between the piston rods of the two discharging cylinders and the surface of the rotating disc is larger than the thickness of the light guide grating; when the piston rods of the two discharging cylinders extend out of the limiting positions, a space which is enough for the light guide grids to pass is reserved between the scraping plate and the outer edge of the rotating disk, that is to say, the piston rods of the two discharging cylinders and the scraping plate can not block the light guide grids to rotate along with the rotating disk.

In the case, there are distributed electrical control modules as shown in fig. 4, which mainly include: the device comprises a 220V air switch 23 with the functions of anti-leakage and current overload protection, an AC/DC converter 24 capable of converting 220V alternating current power supply into 24V direct current power supply, a circuit action controller 26 (a PLC programmable controller is used in the embodiment), an image processor 25 (a sample wafer with good light guide grids stored therein, a camera is used for photographing the light guide grids on a rotating disc, and then comparing the photographed photo with the sample wafer stored in the processor, and judging whether the light guide grids are OK products or NG products according to the comparison result), a four-way electromagnetic valve 28 group, four normally-open type intermediate relays 27, a normally-closed type intermediate relay 31, a proximity switch 29 and the like.

When the light guide grille is conveyed to the tail end of the channel, the optical fiber correlation switch embedded in the guide plate senses that the light guide grille passes through, the optical fiber correlation switch sends a signal to the PLC, the piston rod of the pushing cylinder extends out under the control of the PLC, and the pushing plate pushes the light guide grille running to the rotary disk from the belt; meanwhile, the piston rod of the blocking cylinder extends out and is placed in the channel, and the advance of the light guide grille is blocked. When the piston rod of the blocking cylinder extends, the magnetic ring in the cylinder body of the blocking cylinder enables the lower limit proximity switch 29 of the blocking cylinder to be switched on, the normally closed intermediate relay 31 connected with the lower limit proximity switch is operated (switched on), the normally closed contact of the normally closed intermediate relay is switched off, the rotating motor stops operating, and the belt stops operating. When the pushing plate pushes the light guide grids onto the rotating disc, the piston rods of the pushing cylinder and the blocking cylinder retract, the magnetic ring in the blocking cylinder body enables the lower limit proximity switch of the blocking cylinder to be disconnected, the intermediate relay connected with the lower limit proximity switch to stop working (disconnection), the normally closed contact is connected, the rotating motor starts working, the conveyor starts to operate, and the belt sends the second light guide grids to the front of the conveyor belt pushing cylinder.

When the rotating disc receives the light guide grating pushed by the pushing plate, under the control of the PLC, the normally open type intermediate relay works (is switched on), the normally open contact is closed, and the stepping motor drives the rotating disc to rotate anticlockwise by 90 degrees; and then the normally open contact of the intermediate relay is disconnected and stops working, the stepping motor stops rotating, the light guide grating is brought under the lens of the camera, the annular LED red light source lamp below the rotary disk is lightened, the transparent light guide grating impurities and bubbles are developed, the camera photographs and compares and calculates the photo with the good sample wafer prestored by the image processor, and therefore the inspection and judgment of the quality of the light guide grating are completed. Meanwhile, the second light guide grating is pushed to an idle area of the rotating disc through pushing of the pushing plate, then the rotating disc continuously rotates anticlockwise for 90 degrees, when the inspected light guide grating enters the rear area of the scraping plate of the OK product discharging cylinder, if the image processor judges that the inspected light guide grating is the OK light guide grating, the image processor sends a signal that the image processor is qualified to the PLC, under the control of the PLC, the normally open intermediate relay is switched on, the normally open contact is closed, the electromagnetic valve is electrified to switch the gas circuit, the piston rod of the OK product discharging cylinder is contracted, the light guide grating is brought into a slideway corresponding to the OK product discharging cylinder when the scraping plate is retracted, the light guide grating naturally slides down to a material bag which is positioned at the front side of the box body and is used for storing the OK product, then the normally open intermediate relay does not work, the normally open contact is switched off, the electromagnetic valve is switched back to the original gas circuit, and the piston rod of the OK product discharging cylinder is ejected. If the NG light guide grating is a defective product, the image processor sends a signal to the PLC, the OK light guide grating is controlled by the PLC, the OK light guide grating is not operated, the rotating disk is driven by the stepping motor to rotate anticlockwise by 90 degrees, after the NG light guide grating rotates to the scraping plate area of the NG light guide grating, the normally open intermediate relay is switched on, the normally open contact is switched on, the electromagnetic valve is electrified to switch the air path, the piston rod of the NG light guide grating is contracted, the scraping plate brings the NG light guide grating into a slideway corresponding to the NG light guide grating when retracting, the NG light guide grating naturally slides down into a plastic bag positioned at the rear side of the box body and used for storing the NG, then the normally open intermediate relay is switched off, the normally open contact is switched off, the electromagnetic valve is switched back to the original air path, and the piston rod of the NG light guide grating is ejected, and the sorting operation of the OK or the NG light guide grating is completed through the control.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (9)

1. An automatic inspection and sorting device for a light guide grille, which is characterized in that: the device comprises a rotary driving mechanism, wherein a rotary disk is fixedly arranged on an output shaft of the rotary driving mechanism, a camera is arranged above the rotary disk, the camera can shoot a light guide grating positioned on the rotary disk, a feeding mechanism is arranged on one side of the rotary disk, and the light guide gratings can be placed on the rotary disk one by the feeding mechanism to be detected; two linear driving mechanisms are fixed at intervals on two sides of the rotary driving mechanism, each linear driving mechanism is correspondingly provided with a slide way which is obliquely arranged, the moving part of each linear driving mechanism can transfer the light guide grating from the rotary disk to the corresponding slide way, and the tail end of each slide way is provided with a container which can collect the light guide grating sliding from the slide way; the device also comprises an electric control module, the electric control module mainly comprises an image processor and a circuit controller, a sample of the OK product of the light guide grating is pre-stored in the image processor, the image processor can compare the picture of the light guide grating shot by the camera with the sample and then send a signal of the OK product or the NG product to the circuit controller, and the circuit controller can send an electric signal for starting and stopping to the rotary driving mechanism after receiving the signal and send an action signal to one of the linear driving mechanisms, thereby realizing the separation of the OK product and the NG product.

2. The automatic inspection and sorting device for light guide grids according to claim 1, wherein: the linear driving mechanism is a linear cylinder, a scraping plate is arranged at the free end of a piston rod of the linear cylinder, and the scraping plate can scrape a light guide grid on the rotating disc into a slide way when the piston rod retracts.

3. The automatic inspection and sorting device for light guide grids according to claim 1, wherein: the rotary driving mechanism is a stepping motor.

4. The automatic inspection and sorting device for light guide grids according to claim 1, wherein: the feeding mechanism comprises a conveyor belt conveyor, the conveyor is arranged on one side of the rotating disc, two guide plates are arranged above the conveyor belt, and a passage for the light guide grid to pass is formed between the two guide plates; the belt is opposite to the other side of the rotating disc, a pushing cylinder is arranged outside the tail end of the channel, the free end of a piston rod of the pushing cylinder is fixedly connected with a pushing plate, and when the piston rod of the pushing cylinder stretches out, the pushing plate can push a light guide grid moving to the position along with the belt to the rotating disc; the tail end of the channel is provided with a photoelectric switch capable of sensing whether the light guide grating passes through the channel, the upper end of the tail part of the guide plate is fixedly provided with a blocking cylinder, and a piston rod of the blocking cylinder can block the light guide grating in the channel when extending out, so that intermittent feeding of the conveyor is realized; the photoelectric switch can send out an electric signal to the circuit controller, and the circuit controller can control the extension or contraction of piston rods of the pushing cylinder and the blocking cylinder through the electromagnetic valve group after receiving the electric signal sent out by the photoelectric switch.

5. The automatic inspection and sorting device for light guide grids according to claim 1, wherein: the rotary disk is transparent, the lower part of rotary disk is provided with annular, can send colored light's illuminator, the colored light that the illuminator launched is after penetrating the rotary disk can carry out the light filling to the light guide grid of placing on the rotary disk.

6. The automatic inspection and sorting device for light guide grids according to claim 1, wherein: the automatic inspection and sorting device of the light guide grating further comprises a first display screen and a second display screen which are electrically connected with the electric control module; the first display screen can display the running and controlling states and statistical results of the device, and the second display screen is used for setting detection parameters of the camera.

7. The automatic inspection and sorting apparatus for light guide grids according to claim 4, wherein: the front ends of the two guide plates are provided with inclined planes, and the two inclined planes which are oppositely arranged form a splayed guide opening which is convenient for the light guide grid to enter.

8. The automatic inspection and sorting apparatus for light guide grids according to claim 4, wherein: the photoelectric switch is an optical fiber correlation switch, and the transmitting part and the receiving part of the optical fiber correlation switch are respectively embedded in the guide plates at two sides of the channel.

9. The automatic inspection and sorting apparatus for light guide grids according to claim 5, wherein: the light emitter is an annular LED lamp capable of emitting a red light source.