CN118671058A - A method for image detection in passive component feeding - Google Patents

Abstract

The invention discloses an image detection method in passive component feeding, which comprises the following steps: ① whole columns: feeding by using a vibration feeding slideway, so that products are sequentially ordered and conveyed towards the direction of a discharge end; ② And (3) detecting for the first time: positioning a group of products at a primary detection position by utilizing a primary positioning mechanism, photographing the top surface and one side surface of the products respectively by utilizing a primary industrial camera, and analyzing photographing data by a controller to realize detection of two adjacent outer surface side surfaces of the products; ③ The product which is qualified in the first detection is overturned by using the overturning mechanism, so that the bottom of the product is upward and is conveyed to a secondary detection position of the vibration feeding slideway; ④ And (3) detecting for the second time: and (3) positioning a group of products by using a secondary positioning mechanism, photographing the side surface of the other side of the products and the bottom surface turned upwards from the bottom by using a secondary industrial camera, and detecting the side surfaces of the other two adjacent surfaces of the products. The invention improves the detection efficiency and reduces the detection cost.

Description

A method for image detection in passive component feeding

Technical Field

The invention relates to a material feeding device of a packet measuring machine, in particular to an image detection method in the material feeding of a passive component, which is mainly used for detecting the outer surfaces around the patch components.

Background Art

To ensure the appearance quality of SMD passive components (such as capacitors, resistors, inductors, fuses, diodes, etc.) before testing and packaging, CCD appearance inspection devices are installed to monitor the appearance quality. At present, there are three situations for the inspection of the appearance of passive components before testing and packaging: first, no appearance inspection; second, front and back appearance inspection in the test packaging; third, after the 6-sided inspection on the appearance machine, it is put into the test packaging equipment, and the front and back appearance inspection is carried out again in the test packaging.

However, the current appearance inspection methods all have their own defects: although the cost is low if the appearance is not inspected, the quality cannot be guaranteed; although only the front and back sides are inspected, no defects can be found in the finished product after packaging, 4 sides (sides and both ends) are not inspected, and the quality cannot be guaranteed; after the 6-side inspection is performed on the appearance machine, the product is put into the test packaging equipment, and the front and back appearance inspection methods are performed again in the test packaging. First, the cost of the appearance machine alone is relatively high. Secondly, there is a risk of undetected defects when the product is put into production with the test packaging equipment after inspection.

Summary of the invention

The purpose of the present invention is to provide an image detection method for passive component feeding, by using this method, the detection efficiency is effectively improved, the space occupation is reduced, and the equipment cost is reduced.

To achieve the above object, the technical solution adopted by the present invention is: a method for image detection in the feeding of passive components, the steps of which are:

① Arrangement: Use the vibrating feeding chute to feed the products. The products are arranged in sequence by the arrangement mechanism at the feeding end of the vibrating feeding chute, so that the products are transported toward the discharging end of the vibrating feeding chute in the order of the order.

②First inspection: Products will be moved to the first inspection position of the vibrating feeding slide in sequence. When moving to the first inspection position, a group of products at the first inspection position will be positioned by a first positioning mechanism, and the products to be inspected will be separated separately. The top surface and one side of the product will be photographed by a first industrial camera, and the photographic data of the first industrial camera will be analyzed by the controller. Qualified products will continue to move toward the discharge end, and unqualified products will be rejected by the first positioning mechanism, realizing the inspection of two adjacent outer surfaces of the product;

③ Use the flipping mechanism to flip the products that have passed the first inspection so that the bottom of the products face upwards, and transport them to the secondary inspection position of the vibrating feeding slide;

④ Second inspection: When the product moves to the secondary inspection position, the secondary positioning mechanism is used to position a group of products at the secondary inspection position, and the products to be inspected can be separated separately. The other side of the product and the bottom surface turned up from the bottom are photographed by the secondary industrial camera, and the photographic data of the secondary industrial camera is analyzed by the controller. Qualified products are moved toward the discharge end, and unqualified products are removed by the secondary positioning mechanism, so as to realize the inspection of the other two adjacent outer surfaces of the product, thereby realizing the inspection of the four outer surfaces of the product during the feeding process.

In the above technical solution, the alignment mechanism includes a first air hole, a second air hole and a third air hole which are sequentially arranged between the feeding end and the primary detection position, the third air hole is provided with a second detection component, and the second air hole is provided with a first detection component. When the product is fed into the vibrating feeding chute through the feeding mechanism, the first air hole is always open to generate a blowing force to blow the vertical material or the stacked material away from the vibrating feeding chute, so that the products are sequentially transported toward the discharging end;

When the product passes through the second air hole, the first detection component detects whether the product is white. If so, the second air hole blows air to turn the white side of the product 180 degrees so that the black side of the product faces upward, or blows the product away from the vibrating feeding slideway;

When the product passes through the third air hole, if the second detection component detects that there are too many products or overlapping products at this location, the third air hole will open to blow the excess products at the third air hole away from the vibrating feeding slideway.

In the above technical scheme, there is also a first solenoid valve that controls the ventilation or disconnection of the second air hole and a second solenoid valve that controls the ventilation or disconnection of the third air hole. When the first detection component detects that the product is white, the first solenoid valve opens to ventilate the second air hole, blows the white side of the product 180 degrees to turn the black side of the product upward, or blows the product away from the vibrating feeding chute. After completion, the first solenoid valve is closed; when the second detection component detects that there are too many products or overlapping products at the third air hole, the second solenoid valve opens to ventilate the third air hole, blows the product away from the vibrating feeding chute. After the product is blown away, the second solenoid valve is closed, so that the products move in an orderly manner toward the discharge end.

In the above technical solution, the primary positioning mechanism includes a fourth air hole, a fifth air hole, a sixth air hole, a seventh air hole and an eighth air hole arranged in sequence from the feed end to the discharge end, the primary industrial camera includes a first industrial camera and a second industrial camera, and a third detection component is provided at the eighth air hole;

The eighth air hole is a primary detection position. When the product moves to the eighth air hole, the product is still facing the seventh air hole. When the third detection component detects that the product moves to the primary detection position, the fourth air hole, the fifth air hole and the eighth air hole absorb air. The eighth air hole absorbs one product. The fourth air hole and the fifth air hole absorb a group of products together or separately. At the same time, the sixth air hole blows the product between the fifth air hole and the eighth air hole away from the vibrating feeding slideway at a fixed time, so that the product at the eighth air hole is separated separately.

Then the first industrial camera takes a picture of the top surface of the product, and the second industrial camera takes a picture of one side surface of the product, and feeds the picture data back to the controller, which analyzes whether the two sides of the product are qualified. If they are qualified, the fourth air hole, the fifth air hole, and the eighth air hole stop sucking air and release the positioning of the product, and then the product moves toward the discharge end;

If the product is judged to be unqualified, the seventh air hole blows air with a blowing force greater than the suction force of the eighth air hole, blowing the product off the vibrating feeding slide and removing it. Then the fourth, fifth and eighth air holes stop sucking air and release the positioning of the product. The product then moves toward the discharge end and continues the next group of products for one-time testing.

In the above technical solution, there are also a third solenoid valve, a fourth solenoid valve and a fifth solenoid valve, the third solenoid valve is connected to the fourth air hole, the fifth air hole and the eighth air hole, when the third solenoid valve is opened, the fourth air hole, the fifth air hole and the eighth air hole generate negative pressure, and the product is adsorbed and positioned on the vibrating feeding slideway, when the third solenoid valve is closed, the fourth air hole, the fifth air hole and the eighth air hole do not generate negative pressure, and the product is transported toward the discharge end through the vibrating feeding slideway;

The sixth air hole is connected to the fourth solenoid valve. When the fourth solenoid valve is opened, the sixth air hole blows air to blow the product away from the vibrating feeding slideway. When the fourth solenoid valve is closed, the sixth air hole stops blowing air.

The seventh air hole is connected to the fifth solenoid valve. When the fifth solenoid valve is opened, the seventh air hole blows air to blow the product away from the vibrating feeding slide and remove it. When the fifth solenoid valve is closed, the seventh air hole stops blowing air.

In the above technical solution, the secondary positioning mechanism includes a ninth air hole, a tenth air hole, an eleventh air hole and a twelfth air hole arranged in sequence from the feed end to the discharge end, the secondary industrial camera includes a third industrial camera and a fourth industrial camera, and the fourth detection component is located at the eleventh air hole;

The eleventh air hole is the secondary detection position. When the product moves to the eleventh air hole, the product is still facing the twelfth air hole. When the fourth detection component detects that the product moves to the secondary detection position, the ninth air hole and the eleventh air hole absorb air. The eleventh air hole absorbs one product, and the ninth air hole also absorbs one product. At the same time, the tenth air hole regularly blows the product between the ninth air hole and the eleventh air hole away from the vibrating feeding slideway, so that the product at the eleventh air hole is separated separately.

Then the third industrial camera takes a picture of the bottom surface of the turned product, and the fourth industrial camera takes a picture of the other side surface of the product, and feeds the picture data back to the controller, which analyzes whether the two sides of the product are qualified. If they are qualified, the ninth and tenth air holes stop sucking air and release the positioning of the product, and then the product moves toward the discharge end;

If the product is judged to be unqualified, the twelfth air hole blows air with a blowing force greater than the suction force of the eleventh air hole, blowing the product off the vibrating feeding slideway, and then the ninth and eleventh air holes stop sucking air and release the positioning of the product, and then the product moves toward the discharge end to continue the secondary inspection of the next group of products.

In the above technical solution, there are also a sixth solenoid valve, a seventh solenoid valve and an eighth solenoid valve, the sixth solenoid valve is connected to the ninth air hole and the eleventh air hole, when the sixth solenoid valve is opened, negative pressure is generated at the ninth air hole and the eleventh air hole, and the product is adsorbed and positioned on the vibrating feeding slide; when the sixth solenoid valve is closed, the ninth air hole and the eleventh air hole do not generate negative pressure, and the product is transported toward the discharge end through the vibrating feeding slide;

The seventh solenoid valve is connected to the tenth air hole. When the seventh solenoid valve is opened, the tenth air hole blows air to blow the product away from the vibrating feeding slideway. When the seventh solenoid valve is closed, the tenth air hole stops blowing air.

The twelfth air hole is connected to the eighth solenoid valve. When the eighth solenoid valve is opened, the twelfth air hole blows air to blow the product away from the vibrating feeding slide and remove it. When the eighth solenoid valve is closed, the twelfth air hole stops blowing air.

In the above technical solution, a rear end aligning mechanism is further provided on the vibrating feeding slideway between the secondary positioning mechanism and the discharging end, and the rear end aligning mechanism includes a thirteenth air hole, a fourteenth air hole and a fifteenth air hole which are sequentially arranged between the secondary positioning mechanism and the discharging end, a fifth detection component is provided at the fourteenth air hole, and a sixth detection component is provided at the fifteenth air hole;

When the product passes through the thirteenth air hole, the third air hole is always open, generating a blowing force to blow the vertical material or stacked material away from the vibrating feeding slideway, so that the products are transported in sequence toward the discharge end;

When the product passes through the fourteenth air hole, the fifth detection component detects whether the product is reversed. If reversed, the fourteenth air hole blows air to turn the white side of the product 180 degrees so that the black side of the product faces upward, or blows the product away from the vibrating feeding slideway;

When the product passes through the fifteenth air hole, if the sixth detection component detects that there are too many products or overlapping products at this location, the fifteenth air hole will open to blow the excess products at the fifteenth air hole away from the vibrating feeding slideway.

In the above technical solution, there are also a ninth solenoid valve and a tenth solenoid valve, the fourteenth air hole is connected to the ninth solenoid valve, when the ninth solenoid valve is opened, the fourteenth air hole opens to blow air, blows the product to flip it or blows the product away from the vibrating feeding slideway, when the ninth solenoid valve is closed, the fourteenth air hole stops blowing air;

The fifteenth air hole is connected to the tenth solenoid valve. When the tenth solenoid valve is opened, the fifteenth air hole opens vertically to blow the product away from the vibrating feeding slideway. When the tenth solenoid valve is closed, the fifteenth air hole stops blowing.

In the above technical solution, a vibration reflux channel and two groups of reject boxes are also provided beside the vibration feeding slideway. Unqualified products rejected by the primary positioning mechanism will be collected by one group of reject boxes, and unqualified products rejected by the secondary positioning mechanism will be collected by the other group of reject boxes.

Except for the rejected unqualified products, other products that fall from the vibrating feeding chute will fall into the vibrating reflux channel and flow back into the feeding mechanism that feeds the vibrating feeding chute through the vibrating reflux channel.

Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

1. In the present invention, when the product is directly fed on the vibrating feeding slideway, the two adjacent outer side surfaces of the product can be photographed and inspected by a primary industrial camera, and then the other two adjacent outer side surfaces of the product can be photographed and inspected by a secondary industrial camera, so that the four outer surfaces of the product can be photographed and inspected by the industrial camera respectively during the product is fed through the vibrating feeding slide, so as to realize the advance inspection of the four surfaces of the product. In this way, only the front and back of the product need to be quickly inspected when entering the package inspection machine. Compared with the previous structure, no separate six-side inspection equipment is required, which can effectively reduce the space occupation and the inspection cost;

2. In the present invention, the corresponding air holes are first used to blow the upright materials, stacked materials, etc. away from the vibrating feeding slideway, so that the products are transported in sequence, and then the air holes are used to blow away or flip the reversed products, so that the products are sent to the back-end equipment at a qualified angle. In addition, during the two inspection processes, the negative pressure of the air hole suction is used to position the products to be inspected and separate them separately, so that the industrial camera can take pictures of their outer surfaces, thereby completing the inspection of the outer surface of the product for 4 weeks and rejecting the materials during the loading process, thereby improving the qualified rate of subsequent products, improving the inspection efficiency, and reducing the inspection cost.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a detection process in Embodiment 1 of the present invention;

FIG2 is a schematic diagram of the first detection process in Embodiment 1 of the present invention;

FIG3 is a schematic diagram of a second detection process in Embodiment 1 of the present invention;

4 is a schematic diagram of the structure of a vibrating feeding slide and a vibrating loading tray in Embodiment 1 of the present invention (when drawn by an industrial camera);

FIG. 5 is a schematic diagram of the structure of a vibrating feeding slideway and a vibrating loading tray in the first embodiment of the present invention (without the industrial camera);

FIG6 is a rear view of FIG5;

FIG7 is a schematic diagram of the three-dimensional structure of FIG5;

8 is a schematic diagram of the three-dimensional structure of the vibrating feeding slideway and the vibrating return track in a viewing angle in the first embodiment of the present invention;

FIG9 is a partial enlarged view of the rear end alignment mechanism in FIG8;

FIG10 is a partial enlarged view of the entire arrangement mechanism in FIG8;

11 is a schematic diagram of the three-dimensional structure of the vibrating feeding slideway and the vibrating return track in another viewing angle in the first embodiment of the present invention;

12 is a schematic diagram of the three-dimensional structure of the vibrating feeding slide and the vibrating return track in a viewing angle state in the first embodiment of the present invention;

FIG13 is a partial enlarged view of the primary positioning mechanism in FIG12;

FIG14 is a partial enlarged view of the second positioning mechanism in FIG12;

15 is a schematic diagram of the partial cross-sectional structure of different parts of the product in the first embodiment of the present invention during the flipping process through the middle spiral flip chute.

Among them: 1. First detection position; 2. Vibrating feeding slide; 3. Second detection position; 4. Feeding end; 5. Discharging end; 6. Vibrating loading tray; 7. Fourth air hole; 8. Fifth air hole; 9. Sixth air hole; 10. Seventh air hole; 11. Eighth air hole; 12. Third detection component; 13. Third solenoid valve; 14. Fourth solenoid valve; 15. Fifth solenoid valve; 16. First industrial camera; 17. Second industrial camera; 19. Left feeding chute; 20. Right feeding chute; 21. Middle spiral flip chute; 22. Ninth air hole; 23. Tenth air hole; 24. Eleventh air hole; 25. Twelfth air hole; 26. Fourth detection component; 27. The sixth solenoid valve; 28. The seventh solenoid valve; 29. The eighth solenoid valve; 30. The third industrial camera; 31. The fourth industrial camera; 32. The first air hole; 33. The second air hole; 34. The third air hole; 35. The first solenoid valve; 36. The second solenoid valve; 37. The first detection component; 38. The second detection component; 39. The thirteenth air hole; 40. The fourteenth air hole; 41. The fifteenth air hole; 42. The ninth solenoid valve; 43. The tenth solenoid valve; 44. The fifth detection component; 45. The sixth detection component; 46. The vibration return track; 47. The pick-up box; 50. The product; 101. The primary positioning mechanism; 102. The secondary positioning mechanism;

DETAILED DESCRIPTION

The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

Embodiment 1: Referring to FIGS. 1 to 15 , a method for image detection in feeding of passive components is provided, wherein the steps are as follows:

① Arrangement: The products are fed by the vibrating feeding chute 2, and the products are arranged by the arrangement mechanism at the feeding end 4 of the vibrating feeding chute, so that the products are arranged in sequence and transported toward the discharging end 5 of the vibrating feeding chute; wherein, when arranging, the products 50 are arranged in sequence and transported on the vibrating feeding chute, so that the products will not be stacked or upright, so that the products can be regularly photographed and inspected during subsequent inspection.

② First inspection: The products will be moved to the first inspection position 1 of the vibrating feeding slide in sequence. When moving to the first inspection position, a group of products at the first inspection position will be positioned by a first positioning mechanism 101, and the products to be inspected will be separated separately. The top surface and one side of the product will be photographed by a first industrial camera, and the photographic data of the first industrial camera will be analyzed by a controller. Qualified products will continue to move toward the discharge end, and unqualified products will be rejected by the first positioning mechanism, so as to realize the inspection of two adjacent outer surfaces of the product;

③ Use the flipping mechanism to flip the products that have passed the first inspection so that the bottom of the products face upwards, and transport them to the secondary inspection position 3 of the vibrating feeding slideway;

④ Second inspection: When the product moves to the secondary inspection position, the secondary positioning mechanism 102 is used to position a group of products at the secondary inspection position, and the products to be inspected can be separated separately. The side surface of the other side of the product and the bottom surface turned up from the bottom are photographed by the secondary industrial camera, and the photographic data of the secondary industrial camera is analyzed by the controller. Qualified products are moved toward the discharge end, and unqualified products are removed by the secondary positioning mechanism, so as to realize the inspection of the other two adjacent outer side surfaces of the product, thereby realizing the inspection of the four outer surfaces of the product during the feeding process.

In this embodiment, the product will be placed in the vibrating loading tray 6, and the product will be fed into the vibrating feeding slideway through the vibrating loading tray, and then the product will be arranged first, and then the product will be positioned by the primary positioning mechanism, and the product to be detected will be positioned to make it pause moving. It can be separated from the product at the feeding end alone, or it can not be separated. Taking the product conveyed from left to right as an example, when the product moves to the primary detection position, the primary positioning mechanism will position the product at the primary detection position, and the product at the right end will continue to be conveyed to the right, and the product at the left end will be blocked by the product at the primary detection position. The primary positioning mechanism can separate the product on the left side of the primary detection position from the product at the primary detection position, or it can not be separated. The two adjacent outer sides of the product are photographed by the primary industrial camera, and then the controller is used to analyze and determine whether it is qualified. The qualified ones continue to be sent away, and the unqualified ones are removed. The secondary positioning mechanism is used to position the product to be detected again, so that it pauses moving. Then the other two outer sides of the product are photographed by the secondary industrial camera (the side not photographed by the primary industrial camera), and then the controller is used to analyze, and the qualified ones continue to be conveyed toward the discharge end, and the unqualified ones are removed.

As shown in FIGS. 8 and 10 , the alignment mechanism includes a first air hole 32, a second air hole 33 and a third air hole 34 which are sequentially arranged between the feeding end and the primary detection position, a second detection component 38 is arranged at the third air hole, and a first detection component 37 is arranged at the second air hole. When the product is fed into the vibrating feeding chute through the feeding mechanism, the first air hole is always open to generate a blowing force to blow the vertical material or the stacked material away from the vibrating feeding chute, so that the products are sequentially transported toward the discharging end;

When the product passes through the second air hole, the first detection component detects whether the product is white. If so, the second air hole blows air to turn the white side of the product 180 degrees so that the black side of the product faces upward, or blows the product away from the vibrating feeding slideway;

When the product passes through the third air hole, if the second detection component detects that there are too many products or overlapping products at this location, the third air hole will open to blow the excess products at the third air hole away from the vibrating feeding slideway.

In this embodiment, when the product is fed from the vibrating loading tray to the vibrating feeding chute, it may have problems of stacking and standing. Therefore, the excess product is directly blown away from the vibrating feeding chute through the first air hole that is normally open, so that the product can only be transported on the vibrating feeding chute at a predetermined angle. The first detection component and the second detection component are sensors. Taking the chip resistor as an example, one side of the chip electronics is white and the other side is black. When entering the package measuring machine, the black side needs to face up. Therefore, when the first detection component detects that the white side of the product is facing up, the second air hole blows air to make the product flip 180 degrees, so that the black side faces up, or directly blows the product away from the vibrating feeding chute. During the first detection, the product may be blocked at that position, and the vibrating loading tray will continue to push the product to the right for transportation, so that the product may be full or stacked at the third air hole. Therefore, when it is detected that there are too many products or stacked products at this place, the third air hole is opened to blow the product away from the feeding chute directly, which does not affect the subsequent product detection.

As shown in Figures 4, 5, and 7, there are also a first solenoid valve 35 for controlling the ventilation or disconnection of the second air hole and a second solenoid valve 36 for controlling the ventilation or disconnection of the third air hole. When the first detection component detects that the product is white, the first solenoid valve opens to allow the second air hole to ventilate, blow the white side of the product to flip 180 degrees, so that the black side of the product faces up, or blow the product away from the vibrating feeding chute. After completion, the first solenoid valve is closed; when the second detection component detects that there are too many products or overlapping materials at the third air hole, the second solenoid valve opens to allow the third air hole to ventilate, blow the product away from the vibrating feeding chute, and after the product is blown away, the second solenoid valve is closed, so that the product moves in an orderly manner toward the discharge end. Among them, the first solenoid valve and the second solenoid valve are connected to a positive pressure air source to provide positive pressure blowing to the corresponding air holes.

In this embodiment, the controller is electrically connected to the first solenoid valve and the second solenoid valve, and cooperates with the detection data of the first detection component and the second detection component to control the opening or closing of the second air hole and the third air hole, so that the products can be arranged in sequence and transported toward the discharge end.

As shown in FIGS. 4 and 13 , the primary positioning mechanism includes a fourth air hole 7, a fifth air hole 8, a sixth air hole 9, a seventh air hole 10 and an eighth air hole 11 arranged in sequence from the feed end to the discharge end, the primary industrial camera includes a first industrial camera 16 and a second industrial camera 17, and a third detection component 12 is provided at the eighth air hole;

The eighth air hole is a primary detection position. When the product moves to the eighth air hole, the product is still facing the seventh air hole. When the third detection component detects that the product moves to the primary detection position, the fourth air hole, the fifth air hole and the eighth air hole absorb air. The eighth air hole absorbs one product. The fourth air hole and the fifth air hole absorb a group of products together or separately. At the same time, the sixth air hole blows the product between the fifth air hole and the eighth air hole away from the vibrating feeding slideway at a fixed time, so that the product at the eighth air hole is separated separately.

Then the first industrial camera takes a picture of the top surface of the product, and the second industrial camera takes a picture of one side surface of the product, and feeds the picture data back to the controller, which analyzes whether the two sides of the product are qualified. If they are qualified, the fourth air hole, the fifth air hole, and the eighth air hole stop sucking air and release the positioning of the product, and then the product moves toward the discharge end;

If the product is judged to be unqualified, the seventh air hole blows air with a blowing force greater than the suction force of the eighth air hole, blowing the product off the vibrating feeding slide and removing it. Then the fourth, fifth and eighth air holes stop sucking air and release the positioning of the product. The product then moves toward the discharge end and continues the next group of products for one-time testing.

In this embodiment, the eighth air hole positions the product at the primary detection position, and the product on the left side of the group of products will be blown away through the sixth air hole, so that the group of products to be tested is separated, so that the second industrial camera can be used to take pictures of the right outer surface or the left outer surface of the product. In this embodiment, the second industrial camera takes pictures of the right outer surface of the product (in this embodiment, the left side of the vibrating feeding slideway is the feed end, and the right side is the discharge end). In this embodiment, the fourth air hole, the fifth air hole, and the eighth air hole are used to position the three groups of products at the same time, so that when the product passing through the third air hole is transported to the right, it will be blocked by the products at the fourth and fifth air holes. In this way, when the industrial camera takes pictures of the outer surface of the product at the eighth air hole, it will not be disturbed by the product on the left, which can ensure the quality of product photography and the quality of detection. In this embodiment, the fourth air hole, the fifth air hole and the eighth air hole are arranged in two groups at intervals, and the seventh air hole is located between the two groups of the eighth air holes. In this way, when the two groups of the eighth air holes suck the products, the seventh air hole will definitely face the products of the group to be tested. If the group of products is judged to be unqualified, the seventh air hole will blow air to the unqualified products of the group and remove the unqualified products. In this embodiment, the blowing force of the seventh air hole will be greater than the suction force of the eighth air hole, so that the unqualified products can be removed without releasing the suction force limiting the position of the products.

Referring to FIGS. 4, 5 and 7, the third solenoid valve 13, the fourth solenoid valve 14 and the fifth solenoid valve 15 connected to the controller and controlled to open and close by the controller are also provided. The third solenoid valve is connected to the fourth air hole, the fifth air hole and the eighth air hole. When the third solenoid valve is opened, the fourth air hole, the fifth air hole and the eighth air hole generate negative pressure to adsorb and position the product on the vibrating feeding slideway. When the third solenoid valve is closed, the fourth air hole, the fifth air hole and the eighth air hole do not generate negative pressure, and the product is transported toward the discharge end through the vibrating feeding slideway.

The sixth air hole is connected to the fourth solenoid valve. When the fourth solenoid valve is opened, the sixth air hole blows air to blow the product away from the vibrating feeding slideway. When the fourth solenoid valve is closed, the sixth air hole stops blowing air.

The seventh air hole is connected to the fifth solenoid valve. When the fifth solenoid valve is opened, the seventh air hole blows air to blow the product away from the vibrating feeding slide and remove it. When the fifth solenoid valve is closed, the seventh air hole stops blowing air.

In this embodiment, the fifth solenoid valve will be connected to the negative pressure air source to provide negative pressure suction to adsorb and position the product; the third solenoid valve and the fourth solenoid valve will be connected to the positive pressure air source to provide positive pressure blowing to blow the product away from the vibrating feeding slide. Moreover, in this embodiment, the fifth solenoid valve is directly used to control the negative pressure of the three groups of air holes, which can reduce costs. Among them, the sixth air hole is automatically closed after being opened for a period of time. At the same time, in this embodiment, two groups of industrial cameras take pictures in turn. Before taking pictures, the light source of the corresponding industrial camera will be turned on in advance. After the picture is taken, the light source will be turned off. In this way, the light sources of the two groups of industrial cameras will not interfere with each other when taking pictures, which can ensure the quality of taking pictures of the product, and then ensure the quality of inspection.

Among them, there is a feeding chute in the vibration feeding chute, which is used for the vibration conveying of products, wherein the feeding chute includes a left feeding chute 19, a right feeding chute 20 and a middle spiral flip chute 21, the left end of the left feeding chute is the feeding end, the right end of the right feeding chute is the discharging end, the middle spiral flip chute connects the right end of the left feeding chute with the left end of the right feeding chute, and the middle spiral flip chute constitutes the flip mechanism. The primary positioning mechanism is located at the left feeding chute, the secondary positioning mechanism is located at the right feeding chute, and the middle spiral flip chute can flip the product about 90 degrees, so that the lower part of the original outer surface of the product is rotated to the upper part, so that the secondary industrial camera can take pictures of the bottom outer surface of the product.

Referring to Figures 4 and 14, the secondary positioning mechanism includes a ninth air hole 22, a tenth air hole 23, an eleventh air hole 24 and a twelfth air hole 25 which are sequentially arranged from the feed end to the discharge end, the secondary industrial camera includes a third industrial camera 30 and a fourth industrial camera 31, and the fourth detection component 26 is at the eleventh air hole and is connected to the controller; in this embodiment, the fourth detection component is a sensor for detecting whether there is a product at the eleventh air hole. If there is a product, the negative pressure of the ninth air hole and the eleventh air hole will suck the product, and the secondary industrial camera will take pictures for detection.

The eleventh air hole is the secondary detection position. When the product moves to the eleventh air hole, the product is still facing the twelfth air hole. When the fourth detection component detects that the product moves to the secondary detection position, the ninth air hole and the eleventh air hole absorb air. The eleventh air hole absorbs one product, and the ninth air hole also absorbs one product. At the same time, the tenth air hole regularly blows the product between the ninth air hole and the eleventh air hole away from the vibrating feeding slideway, so that the product at the eleventh air hole is separated separately.

Then the third industrial camera takes a picture of the bottom surface of the turned product, and the fourth industrial camera takes a picture of the other side surface of the product, and feeds the picture data back to the controller, which analyzes whether the two sides of the product are qualified. If they are qualified, the ninth and tenth air holes stop sucking air and release the positioning of the product, and then the product moves toward the discharge end;

If the product is judged to be unqualified, the twelfth air hole blows air with a blowing force greater than the suction force of the eleventh air hole, blowing the product off the vibrating feeding slideway, and then the ninth and eleventh air holes stop sucking air and release the positioning of the product, and then the product moves toward the discharge end to continue the secondary inspection of the next group of products.

In this embodiment, the ninth air hole and the eleventh air hole are each in two groups, the tenth air hole and the twelfth air hole are each in one group, and the twelfth air hole is arranged between the two groups of the eleventh air holes. In this way, after the two groups of the eleventh air holes suck the products, the twelfth air hole will definitely face the group of tested products. In this way, when the group of tested products is determined to be unqualified, the twelfth air hole will definitely blow the unqualified products and blow the unqualified products away from the vibrating feeding slide.

At the same time, in this embodiment, when the third industrial camera and the fourth industrial camera take pictures, they take pictures in sequence, and before taking pictures, the light sources of the cameras are turned on first. After the pictures are taken, the light sources of this group of cameras are turned off, and then the light sources of another group of cameras are turned on. The other group of cameras takes pictures, and then the light sources are turned off. In this way, when the two groups of cameras take pictures, the light sources can increase the brightness of the product and ensure the quality of the pictures, and the light sources will not affect each other, ensuring the quality of the pictures.

Among them, the second industrial camera and the fourth industrial camera can be used to take pictures of the left or right side of the product's outer surface, two groups of industrial cameras can take pictures of the left and right sides of the product's outer surface, and the first industrial camera and the third industrial camera can take pictures of the top and bottom of the product's outer surface.

As shown in Figures 4 to 7, there are also a sixth solenoid valve 27, a seventh solenoid valve 28 and an eighth solenoid valve 29 connected to the controller. The sixth solenoid valve is connected to the ninth and eleventh air holes. The sixth solenoid valve is connected to a negative pressure air source to provide negative pressure suction to the corresponding air holes. When the sixth solenoid valve is opened, negative pressure is generated at the ninth and eleventh air holes, and the product is adsorbed and positioned on the vibrating feeding slide; when the sixth solenoid valve is closed, the ninth and eleventh air holes do not generate negative pressure, and the product is transported toward the discharge end through the vibrating feeding slide;

The seventh solenoid valve is connected to the tenth air hole. When the seventh solenoid valve is opened, the tenth air hole blows air to blow the product away from the vibrating feeding slideway. When the seventh solenoid valve is closed, the tenth air hole stops blowing air.

The twelfth air hole is connected to the eighth solenoid valve. When the eighth solenoid valve is opened, the twelfth air hole blows air to blow the product away from the vibrating feeding slide and remove it. When the eighth solenoid valve is closed, the twelfth air hole stops blowing air.

The seventh solenoid valve and the eighth solenoid valve are connected to the positive pressure air source, which can give the corresponding air holes a positive pressure blowing force to blow the product away from the vibrating feeding slideway.

As shown in Figures 8 and 9, there is also a rear end aligning mechanism on the vibrating feeding slide between the secondary positioning mechanism and the discharge end, and the rear end aligning mechanism includes a thirteenth air hole 39, a fourteenth air hole 40 and a fifteenth air hole 41 which are sequentially arranged between the secondary positioning mechanism and the discharge end, a fifth detection component 44 is provided at the fourteenth air hole, and a sixth detection component 45 is provided at the fifteenth air hole; the fifth detection component and the sixth detection component are sensors, and are connected to the controller.

When the product passes through the thirteenth air hole, the third air hole is connected to the positive pressure air source, giving the third air hole a positive pressure blowing force, and the third air hole is always open to generate a blowing force to blow the vertical material or the stacked material away from the vibrating feeding slideway, so that the products are sequentially transported toward the discharge end;

When the product passes through the fourteenth air hole, the fifth detection component detects whether the product is reversed. If reversed, the fourteenth air hole blows air to turn the white side of the product 180 degrees so that the black side of the product faces upward, or blows the product away from the vibrating feeding slideway;

When the product passes through the fifteenth air hole, if the sixth detection component detects that there are too many products or overlapping products at this place, the fifteenth air hole will open to blow the excess products at the fifteenth air hole away from the vibrating feeding chute (at this time, there may be back-end equipment, such as a package measuring machine. When the vibrating feeding chute feeds the product into the package measuring machine, the feeding speed is fast, resulting in the detection speed of the package measuring machine failing to keep up with the feeding speed, and the products will accumulate. Therefore, the fifteenth air hole and the sixth detection component are set to blow excess products away from the vibrating feeding chute to ensure that the products can be sorted in sequence and sent to the back-end equipment).

As shown in FIG6 , a ninth solenoid valve 42 and a tenth solenoid valve 43 connected to the controller are also provided, and the fourteenth air hole is connected to the ninth solenoid valve. When the ninth solenoid valve is opened, the fourteenth air hole opens to blow air, blows the product over or blows the product away from the vibrating feeding slideway, and when the ninth solenoid valve is closed, the fourteenth air hole stops blowing air;

The fifteenth air hole is connected to the tenth solenoid valve. When the tenth solenoid valve is opened, the fifteenth air hole opens vertically to blow the product away from the vibrating feeding slideway. When the tenth solenoid valve is closed, the fifteenth air hole stops blowing.

The ninth solenoid valve and the tenth solenoid valve are connected to the positive pressure air source to blow positive pressure air to the corresponding air holes to blow the product away from the feeding slideway.

As shown in FIGS. 3 to 12 , a vibration return channel 46 and two groups of reject boxes 47 are provided beside the vibration feeding slideway. Unqualified products rejected by the primary positioning mechanism will be collected by one group of reject boxes, and unqualified products rejected by the secondary positioning mechanism will be collected by another group of reject boxes.

Except for the rejected unqualified products, other products that fall from the vibrating feeding chute will fall into the vibrating reflux channel and flow back into the feeding mechanism that feeds the vibrating feeding chute through the vibrating reflux channel.

In the present invention, the reject box collects the qualified products, and the vibration reflux channel returns the products dropped from the vibration feeding slide to the vibration upper plate, without the need for manual collection, thereby preventing the loss of products and ensuring the continuity of product feeding.

In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection, or an integral one; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, for example, the two can form a mechanical abutment or abutment connection through abutment, contact, etc., the two can also be directly hung or hung through an intermediate medium, etc., or it can be the internal connection of the two elements or the interaction relationship between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims (10)

1. A method for image detection in passive component feeding, comprising the following steps: ① Arrangement: Use the vibrating feeding chute to feed the products. The products are arranged in sequence by the arrangement mechanism at the feeding end of the vibrating feeding chute, so that the products are transported toward the discharging end of the vibrating feeding chute in the order of the order. ②First inspection: Products will be sorted and moved to the first inspection position of the vibrating feeding slideway in sequence. When moving to the first inspection position, a group of products at the first inspection position will be positioned by a first positioning mechanism, and the products to be inspected will be separated separately. The top surface and one side of the product will be photographed by a first industrial camera, and the photographic data of the first industrial camera will be analyzed by the controller. Qualified products will continue to move toward the discharge end, and unqualified products will be rejected by the first positioning mechanism, realizing the inspection of two adjacent outer surfaces of the product; ③ Use the flipping mechanism to flip the products that have passed the first inspection so that the bottom of the products face upwards, and transport them to the secondary inspection position of the vibrating feeding slide; ④ Second inspection: When the product moves to the secondary inspection position, the secondary positioning mechanism is used to position a group of products at the secondary inspection position, and the products to be inspected can be separated separately. The other side of the product and the bottom surface turned up from the bottom are photographed by the secondary industrial camera, and the photographic data of the secondary industrial camera is analyzed by the controller. Qualified products are moved toward the discharge end, and unqualified products are removed by the secondary positioning mechanism, so as to realize the inspection of the other two adjacent outer surfaces of the product, thereby realizing the inspection of the four outer surfaces of the product during the feeding process. 2. The image detection method in the feeding of passive components according to claim 1 is characterized in that: the arranging mechanism comprises a first air hole, a second air hole and a third air hole which are sequentially arranged between the feeding end and the primary detection position, the third air hole is provided with a second detection component, the second air hole is provided with a first detection component, when the product is fed into the vibrating feeding chute through the feeding mechanism, the first air hole is always open to generate a blowing force, so as to blow the vertical material or the stacked material away from the vibrating feeding chute, so that the products are sequentially transported toward the discharging end; When the product passes through the second air hole, the first detection component detects whether the product is white. If so, the second air hole blows air to turn the white side of the product 180 degrees so that the black side of the product faces upward, or blows the product away from the vibrating feeding slideway; When the product passes through the third air hole, if the second detection component detects that there are too many products or overlapping products at this location, the third air hole will open to blow the excess products at the third air hole away from the vibrating feeding slideway. 3. The image detection method in the feeding of passive components according to claim 2 is characterized in that: it also has a first solenoid valve for controlling the ventilation or disconnection of the second air hole and a second solenoid valve for controlling the ventilation or disconnection of the third air hole. When the first detection component detects that the product is white, the first solenoid valve opens to allow the second air hole to be ventilated, and the white side of the product is blown and turned 180 degrees to make the black side of the product face up, or the product is blown away from the vibrating feeding chute. After completion, the first solenoid valve is closed; when the second detection component detects that there are too many products or overlapping materials at the third air hole, the second solenoid valve opens to allow the third air hole to be ventilated, and the product is blown away from the vibrating feeding chute. After the product is blown away, the second solenoid valve is closed, so that the products move in an orderly manner toward the discharge end. 4. The image detection method in the feeding of passive components according to claim 1 is characterized in that: the primary positioning mechanism comprises a fourth air hole, a fifth air hole, a sixth air hole, a seventh air hole and an eighth air hole arranged in sequence from the feeding end to the discharging end, the primary industrial camera comprises a first industrial camera and a second industrial camera, and the eighth air hole is provided with a third detection component; The eighth air hole is a primary detection position. When the product moves to the eighth air hole, the product is still facing the seventh air hole. When the third detection component detects that the product moves to the primary detection position, the fourth air hole, the fifth air hole and the eighth air hole absorb air. The eighth air hole absorbs one product. The fourth air hole and the fifth air hole absorb a group of products together or separately. At the same time, the sixth air hole blows the product between the fifth air hole and the eighth air hole away from the vibrating feeding slideway at a fixed time, so that the product at the eighth air hole is separated separately. Then the first industrial camera takes a picture of the top surface of the product, and the second industrial camera takes a picture of one side surface of the product, and feeds the picture data back to the controller, which analyzes whether the two sides of the product are qualified. If they are qualified, the fourth air hole, the fifth air hole, and the eighth air hole stop sucking air and release the positioning of the product, and then the product moves toward the discharge end; If the product is judged to be unqualified, the seventh air hole blows air with a blowing force greater than the suction force of the eighth air hole, blowing the product off the vibrating feeding slide and removing it. Then the fourth, fifth and eighth air holes stop sucking air and release the positioning of the product. The product then moves toward the discharge end and continues the next group of products for one-time testing. 5. The image detection method in the feeding of passive components according to claim 4 is characterized in that: it also has a third solenoid valve, a fourth solenoid valve and a fifth solenoid valve, the third solenoid valve is connected to the fourth air hole, the fifth air hole and the eighth air hole, when the third solenoid valve is opened, the fourth air hole, the fifth air hole and the eighth air hole generate negative pressure, and the product is adsorbed and positioned on the vibrating feeding slideway, when the third solenoid valve is closed, the fourth air hole, the fifth air hole and the eighth air hole do not generate negative pressure, and the product is transported toward the discharge end through the vibrating feeding slideway; The sixth air hole is connected to the fourth solenoid valve. When the fourth solenoid valve is opened, the sixth air hole blows air to blow the product away from the vibrating feeding slideway. When the fourth solenoid valve is closed, the sixth air hole stops blowing air. The seventh air hole is connected to the fifth solenoid valve. When the fifth solenoid valve is opened, the seventh air hole blows air to blow the product away from the vibrating feeding slide and remove it. When the fifth solenoid valve is closed, the seventh air hole stops blowing air. 6. The image detection method in the feeding of passive components according to claim 1 is characterized in that: the secondary positioning mechanism comprises a ninth air hole, a tenth air hole, an eleventh air hole and a twelfth air hole arranged in sequence from the feeding end to the discharging end, the secondary industrial camera comprises a third industrial camera and a fourth industrial camera, and the fourth detection component is located at the eleventh air hole; The eleventh air hole is the secondary detection position. When the product moves to the eleventh air hole, the product is still facing the twelfth air hole. When the fourth detection component detects that the product moves to the secondary detection position, the ninth air hole and the eleventh air hole absorb air. The eleventh air hole absorbs one product, and the ninth air hole also absorbs one product. At the same time, the tenth air hole blows the product between the ninth air hole and the eleventh air hole away from the vibrating feeding slideway at a fixed time, so that the product at the eleventh air hole is separated separately. Then the third industrial camera takes a picture of the bottom surface of the turned product, and the fourth industrial camera takes a picture of the other side surface of the product, and feeds the picture data back to the controller, which analyzes whether the two sides of the product are qualified. If they are qualified, the ninth and tenth air holes stop sucking air and release the positioning of the product, and then the product moves toward the discharge end; If the product is judged to be unqualified, the twelfth air hole blows air with a blowing force greater than the suction force of the eleventh air hole, blowing the product off the vibrating feeding slideway, and then the ninth and eleventh air holes stop sucking air and release the positioning of the product, and then the product moves toward the discharge end to continue the secondary inspection of the next group of products. 7. The image detection method in the feeding of passive components according to claim 6 is characterized in that: it also has a sixth solenoid valve, a seventh solenoid valve and an eighth solenoid valve, the sixth solenoid valve is connected to the ninth air hole and the eleventh air hole, when the sixth solenoid valve is opened, negative pressure is generated at the ninth air hole and the eleventh air hole, and the product is adsorbed and positioned on the vibrating feeding slide; when the sixth solenoid valve is closed, the ninth air hole and the eleventh air hole do not generate negative pressure, and the product is transported toward the discharge end through the vibrating feeding slide; The seventh solenoid valve is connected to the tenth air hole. When the seventh solenoid valve is opened, the tenth air hole blows air to blow the product away from the vibrating feeding slideway. When the seventh solenoid valve is closed, the tenth air hole stops blowing air. The twelfth air hole is connected to the eighth solenoid valve. When the eighth solenoid valve is opened, the twelfth air hole blows air to blow the product away from the vibrating feeding slide and remove it. When the eighth solenoid valve is closed, the twelfth air hole stops blowing air. 8. The image detection method in the feeding of passive components according to claim 1 is characterized in that: a rear end alignment mechanism is also provided on the vibrating feeding slideway between the secondary positioning mechanism and the discharge end, the rear end alignment mechanism comprises a thirteenth air hole, a fourteenth air hole and a fifteenth air hole which are sequentially arranged between the secondary positioning mechanism and the discharge end, a fifth detection component is provided at the fourteenth air hole, and a sixth detection component is provided at the fifteenth air hole; When the product passes through the thirteenth air hole, the third air hole is always open, generating a blowing force to blow the vertical material or stacked material away from the vibrating feeding slideway, so that the products are transported in sequence toward the discharge end; When the product passes through the fourteenth air hole, the fifth detection component detects whether the product is reversed. If reversed, the fourteenth air hole blows air to turn the white side of the product 180 degrees so that the black side of the product faces upward, or blows the product away from the vibrating feeding slideway; When the product passes through the fifteenth air hole, if the sixth detection component detects that there are too many products or overlapping products at this location, the fifteenth air hole will open to blow the excess products at the fifteenth air hole away from the vibrating feeding slideway. 9. The image detection method in the feeding of passive components according to claim 8, characterized in that: it also comprises a ninth solenoid valve and a tenth solenoid valve, the fourteenth air hole is connected to the ninth solenoid valve, when the ninth solenoid valve is opened, the fourteenth air hole is opened to blow air, blow the product to turn over or blow the product away from the vibrating feeding slideway, when the ninth solenoid valve is closed, the fourteenth air hole stops blowing air; The fifteenth air hole is connected to the tenth solenoid valve. When the tenth solenoid valve is opened, the fifteenth air hole opens vertically to blow the product away from the vibrating feeding slideway. When the tenth solenoid valve is closed, the fifteenth air hole stops blowing. 10. The image detection method for feeding passive components according to any one of claims 1 to 9 is characterized in that: a vibration return channel and two groups of reject boxes are provided beside the vibration feeding slideway, and the unqualified products rejected by the primary positioning mechanism will be collected by one group of reject boxes, and the unqualified products rejected by the secondary positioning mechanism will be collected by the other group of reject boxes; Except for the rejected unqualified products, other products that fall from the vibrating feeding chute will fall into the vibrating reflux channel and flow back into the feeding mechanism that feeds the vibrating feeding chute through the vibrating reflux channel.