CN114871146A - Cup cover product detection system and detection method - Google Patents
Cup cover product detection system and detection method Download PDFInfo
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- CN114871146A CN114871146A CN202210487800.5A CN202210487800A CN114871146A CN 114871146 A CN114871146 A CN 114871146A CN 202210487800 A CN202210487800 A CN 202210487800A CN 114871146 A CN114871146 A CN 114871146A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
- B07C5/342—Sorting according to other particular properties according to optical properties, e.g. colour
- B07C5/3422—Sorting according to other particular properties according to optical properties, e.g. colour using video scanning devices, e.g. TV-cameras
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/36—Sorting apparatus characterised by the means used for distribution
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
- G01N21/892—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the flaw, defect or object feature examined
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Abstract
The invention discloses a cup cover product detection system, which comprises: the cup cover continuous conveying piece comprises a first conveying belt; the working surface of the first conveying belt is formed by at least two unit belts at intervals; the first cup cover shooting assembly is arranged above the cup cover continuous conveying piece; the second cup cover shooting assembly is arranged below the first conveying belt; the third cup cover shooting assembly is arranged above the first conveying belt; the backlight component is arranged below the first conveying belt. This bowl cover product detecting system adopts three single bowl covers of group to shoot the subassembly and carry out image acquisition one by one to the bowl cover of bowl cover continuous conveyor, and wherein the subassembly is shot to the second bowl cover and carry out image acquisition to the bowl cover on the first conveyer belt, and the formation of image is clear, and color and defect size parameter are strong relevant in defect in the bowl cover and the image, and the high definition and the high resolution of formation of image all do benefit to and improve and detect the precision. The invention also discloses a cup cover product detection method.
Description
Technical Field
The invention relates to the technical field of cup cover detection, in particular to a cup cover product detection system and a cup cover product detection method.
Background
The cup cover is a paper cup matching part made of plastic materials, and the cover body is light and thin and has huge yield. The traditional cup cover detection adopts manual visual measurement, and visual fatigue is easily generated by detection personnel under strong light. The improved technical scheme is as disclosed in CN2013700825U, adopts and snatchs the mechanism and snatchs a plurality of bowl covers simultaneously, arranges the bowl cover in the detection station tray, and the top and the below of detection station tray set up detection camera respectively and gather the bowl cover image, and the contrast obtains the defective products, snatchs the mechanism and snatchs the certified products to the non-defective products platform of placing, promotes the pile up neatly through the pile up neatly manipulator, and the defective products who is detained in the detection station tray is blown to the defective products case by high velocity gas flow.
The defects of the technical scheme are as follows: firstly, image acquisition is carried out on a plurality of cup covers at the same time, the resolution ratio of the obtained image is low, the detection precision is low, and the defects of cracks, perforations and the like which are slight but have obvious influence on the quality of the cup covers cannot be detected; the second shooting element and the second shooting element are positioned below the tray, although the tray has good transmittance, the reflection of light of the tray under the light supplementing condition can influence the imaging effect, and the detection rate of defects is reduced; secondly, the outer edge of the cup cover is usually a slope, a camera above the tray forms fuzzy images on the defects of the slope, and the low resolution of the images is superposed, so that the identification accuracy of the defects of the slope is poor; in addition, the cup covers have a certain height, even if certain intervals are formed among the cup covers which are arranged in an array mode, light rays on the slope surface of the outer edge are shielded mutually, so that the slope surface on the collected image is displayed as a shadow, and the defect of the shadow part is not favorably detected; fourthly, the output equipment of the whole detection system is more, for example, vacuum suckers of good products adsorbed by the transfer manipulator need to be controlled respectively, the detection manipulator and the stacking manipulator are double-shaft manipulators, the transfer manipulator is a three-shaft manipulator, and the production cost and the maintenance cost of the equipment are higher; fifthly, the intermittent transmission of the cup cover between the grabbing platform, the detection station tray and the good product placing platform is realized, and the cup cover detection efficiency is low.
Disclosure of Invention
One of the objectives of the present invention is to overcome the defects in the prior art, and to provide a cup cover product inspection system, wherein three single cup cover photographing assemblies are used to respectively acquire a non-backlighted top surface image, a non-backlighted bottom surface image and a backlighted top surface image of a cup cover, so that the cup cover can be inspected more comprehensively, and the light transmission defects of the cup cover, such as cracks and perforations, can be detected through the backlighted top surface image.
In order to obtain the technical effects, the technical scheme of the invention is as follows: a lid product detection system comprising:
the cup cover continuous conveying piece comprises a first conveying belt; the working surface of the first conveying belt is formed by at least two unit belts at intervals;
the first cup cover shooting assembly is arranged above the cup cover continuous conveying piece;
the second cup cover shooting assembly is arranged below the first conveying belt;
the third cup cover shooting assembly is arranged above the first conveying belt;
and the backlight part is arranged below the first conveying belt.
The preferable technical scheme is that the cup cover continuous conveying device further comprises a differential conveying mechanism, and the discharge end of the differential conveying mechanism is connected with the feed end of the cup cover continuous conveying piece in a supporting mode.
The first cup cover shooting assembly is a single cup cover shooting assembly and comprises a top surface shooting element, a slope surface shooting element and a first light supplementing piece; the top surface shooting element is arranged above the slope surface shooting element, and the first light supplementing element is arranged between the slope surface shooting element and the continuous conveying element of the cup cover and between the slope surface shooting element and the top surface shooting element;
and/or the second cup cover shooting assembly is a single cup cover shooting assembly and comprises a bottom surface shooting element and a second light supplementing piece; the second light supplementing piece is arranged between the first conveying belt and the second light supplementing piece.
The optimized technical scheme is that the automatic cup cover removing device further comprises a removing mechanism for driving unqualified cup covers to be separated from the cup cover continuous conveying piece; the rejecting mechanism comprises at least three rejecting units, and the rejecting units are arranged on the discharging sides of the first cup cover shooting assembly, the second cup cover shooting assembly and the third cup cover shooting assembly in a group.
The preferable technical scheme is that the method further comprises the following steps:
the discharging continuous conveying piece is connected with the cup cover continuous conveying piece in a supporting manner;
the stacking mechanism is arranged at the discharging end of the discharging continuous conveying piece;
and the material guide piece is arranged above the discharging continuous conveying piece and comprises a discharging groove or a discharging channel communicated with the stacking mechanism.
Preferably, the stacking mechanism includes:
the base plate is connected with the discharge chute or the discharge channel and is provided with a limiting bulge on the top surface and a jacking accommodating hole in the thickness direction;
the stacking channel is arranged around the jacking accommodating hole and combined with the top surface of the base plate to form a lateral cup cover inlet, and a cup cover stacking and supporting piece is arranged on the inner wall of the stacking channel; the jacking accommodating hole is arranged between the limiting bulge and the lateral cup cover inlet;
the jacking mechanism is arranged in the jacking accommodating hole and used for jacking the cup cover to the position above the cup cover stacking and supporting piece.
The preferable technical scheme is that the working surface of the discharging end of the discharging continuous conveying piece is an inclined conveying surface with gradually reduced height along the conveying direction; the top surface of the substrate is an inclined top surface, and the inclined conveying surface and the inclined top surface are in the same inclined direction and are smoothly connected.
The preferable technical scheme is that a flow dividing piece and a pushing piece are fixedly arranged above the discharging continuous conveying piece;
the flow dividing piece divides the working surface of the discharging continuous conveying piece into at least two flow channels, and a feeding port of one flow channel is opposite to the cup cover continuous conveying piece along the conveying direction of the discharging continuous conveying piece;
the pushing part is used for pushing the cup cover to a material inlet of the other flow channel;
the number of the material guiding pieces and the stacking mechanisms is more than two.
The invention also aims to provide a cup cover product detection method, which comprises the following steps:
acquiring images of the cup cover in the cup cover continuous conveying piece, wherein the images comprise a backlight-free top surface image, a backlight-free bottom surface image and a backlight top surface image;
obtaining a defect parameter, wherein the defect parameter is at least one of a length parameter, a chromatic aberration parameter, an area parameter and a contrast parameter;
and comparing the defect parameters and the parameter threshold values, and marking unqualified cup covers according to the comparison result.
The preferable technical scheme is that the first cup cover shooting assembly, the second cup cover shooting assembly and the third cup cover shooting assembly simultaneously acquire images of cup covers corresponding to one another in the continuous conveying piece of the cup covers in the conveying state.
The invention has the advantages and beneficial effects that:
the cup cover product detection system adopts three groups of single cup cover shooting assemblies to acquire images of cup covers of a cup cover continuous conveying belt one by one, wherein a second cup cover shooting assembly acquires the images of the cup covers on a first conveying belt, the images are clear, defects in the cup covers mainly comprise foreign matters, black spots, yellow spots, dirt, color spots, chromatic aberration, edge defects and the like, the defects are strongly related to the color and defect size parameters in the images, and the high definition and high resolution of the images are beneficial to improving the detection precision;
the third cup cover shooting assembly collects the backlight top surface image of the cup cover, so that defects such as cracks, perforations and the like can be detected conveniently;
the cup cover is continuously conveyed and simultaneously acquires images, intermittent actions such as mechanical arm transfer and the like in the prior art are avoided, the cup cover detection efficiency is high, and the detection speed of 3 products per second can be achieved;
output equipment in the cup cover product detection system is few, and production cost and maintenance cost are low.
Drawings
Fig. 1 is a schematic front view structure diagram of a detection system of a cup lid product of an embodiment;
fig. 2 is a schematic perspective view of a detection system of a cup lid product according to an embodiment;
FIG. 3 is a schematic structural diagram of a continuous cup cover conveying part, a removing mechanism and a shooting assembly in the embodiment;
FIG. 4 is an enlarged view of a portion of FIG. 3;
FIG. 5 is a schematic perspective view of the outfeed conveyor belt and stacking mechanism;
FIG. 6 is a perspective view of the stacking mechanism;
FIG. 7 is another perspective view of the stacking mechanism;
in the figure: 1. a cup cover continuous conveying member; 11. a first conveyor belt; 111. a unit belt; 12. a second conveyor belt;
2. a first cup cover shooting assembly; 21. a top surface imaging element; 22. a slope photographing element; 23. a first light compensating member;
3. a second cup cover shooting assembly; 31. a bottom surface imaging element; 32. a second light compensating member; 33. a light-transmissive barrier; 34. an air flow blowing member;
4. a third cup cover shooting component; 5. a backlight; 6. a differential conveying mechanism;
7. a rejection mechanism; 71. a defective product box;
8. a discharge conveyer belt; 81. an inclined conveying surface; 82. a flow divider; 821. a flow dividing surface; 83. a pushing member; 84. a sensor;
9. a stacking mechanism; 91. a substrate; 911. a first end portion; 912. a second end portion; 913. a limiting bulge; 92. a stacking channel; 921. a cup cover stacking block; 93. a jacking mechanism; 94. a lateral cup cover inlet; 10. a material guiding member.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In the description of the present application, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like, indicate an orientation or positional relationship that is merely for convenience in describing the application and to simplify the description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the application.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; can be directly connected or indirectly connected. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.
Examples
As shown in fig. 1-4, the cup lid product detection system of the embodiment includes a cup lid continuous conveying member 1, a first cup lid shooting assembly 2, a second cup lid shooting assembly 3, a third cup lid shooting assembly 4 and a backlight 5; the cup cover continuous conveying piece 1 comprises a first conveying belt 11; the working surface of the first conveying belt 11 is formed by at least two unit belts 111 at intervals; the first cup cover shooting assembly 2 is arranged above the cup cover continuous conveying piece 1; the second cup cover shooting assembly 3 is arranged below the first conveying belt 11; third-cup shooting assembly 4 and backlight 5 the third-cup shooting assembly 4 is disposed above the first conveyor belt 11, and the backlight 5 is disposed below the first conveyor belt 11.
The continuous cup cover conveying element 1 can be a single row of cup cover conveying elements or a double row or more than three rows of cup cover conveying elements. The shooting assembly is preferably used for shooting a single cup cover so as to ensure the definition of images. The first conveyor belt 11 is used for exposing the bottom surface of the cup cover to the shooting area of the second cup cover shooting assembly 3 and the light irradiation area of the backlight piece 5. The width of the unit belt 111 is set to be smaller, so as to further increase the exposed area of the bottom surface of the cup cover and reduce the shielding area of the unit belt 111 in the non-backlight bottom surface image and the backlight top surface image. Optionally, the cup covers shot by the first cup cover shooting assembly 2 are also carried on the first conveyor belt 11, or carried on other continuous conveying members connected with the first conveyor belt 11. The other continuous transport member may be selected as a roller table or another conveyor belt (shown as a second conveyor belt 12). Based on the basic function of obtaining images, the first cup cover shooting assembly 2, the second cup cover shooting assembly 3 and the third cup cover shooting assembly 4 can be freely combined along the arrangement sequence of the conveying direction of the cup cover continuous conveying piece 1. In the figure, a second conveying belt 12 and a first conveying belt 11 are sequentially arranged along the conveying direction, a first cup cover shooting assembly 2 is arranged above the second conveying belt 12, and a second cup cover shooting assembly 3 and a third cup cover shooting assembly 4 are adjacently arranged.
In another embodiment, as shown in fig. 1-2, the system further comprises a differential conveying mechanism 6, and a discharge end of the differential conveying mechanism 6 is connected with a feed end of the continuous cup cover conveying member 1. In the figure, the conveying speed of the differential conveying mechanism 6 is less than that of the cup cover continuous conveying piece 1, so that the distance between cup covers on the cup cover continuous conveying piece 1 is ensured, the problems of fuzzy slope imaging, shadow and the like caused by shading of adjacent cup covers are avoided, and the detection rate of slope defects is improved.
As shown in fig. 3, in another embodiment, the first cup lid capturing assembly 2 includes a top surface capturing element 21, a slope surface capturing element 22, and a first light compensating element 23, wherein the top surface capturing element 21 is disposed above the slope surface capturing element 22, and the first light compensating element 23 is disposed between the slope surface capturing element 22 and the cup lid continuous conveying member 1 and between the slope surface capturing element 22 and the top surface capturing element 21; the number of the slope shooting elements 22 is preferably three or more, and is three in the figure, so that the shooting range can cover the circumferential direction of the cup cover and the imaging is clear. Two layers of first light compensating pieces 23 are arranged, so that the shading influence of the slope shooting element 22 close to the cup cover on top surface imaging can be overcome.
As shown in fig. 3, in another embodiment, the second cup lid shooting assembly 3 includes a bottom shooting element 31 and a second light supplement element 32, and the second light supplement element 32 is disposed between the first conveying belt 11 and the second light supplement element 32. Further, the second light-compensating piece 32 includes at least two layers of light-compensating pieces (an upper layer light-compensating piece and a lower layer light-compensating piece), wherein a light-transmitting blocking piece 33 is arranged between the lower layer light-compensating piece and the bottom surface shooting element 31, and the bottom surface of the light-transmitting blocking piece 33 is close to the lens of the bottom surface shooting element 31, so as to avoid the influence of the reflection of ambient light on the bottom surface imaging of the cup cover from the light-transmitting blocking piece. In addition, the surrounding blocking parts are arranged around the second cup cover shooting assembly 3, so that the influence of ambient light can be reduced. In the figure, the airflow blowing and spraying member 34 is further disposed on the top surface of the transparent blocking member 33, so that the foreign matters falling on the top surface of the transparent blocking member 33 can be blown away in time, and the defect misjudgment caused by the foreign matters is avoided. The light-transmitting barrier 33 is made of a material having excellent light transmission, such as a highly transparent plastic material or glass.
Furthermore, the light supplementing pieces (comprising the first light supplementing pieces 23 and the second light supplementing pieces 32) are annular lamps arranged on the periphery of the preset position of the cup cover in a surrounding mode, the light emitting surfaces of the annular lamps face the cup cover continuous conveying piece 1, the structure enables incident light areas on the surface of the cup cover to be uniform, and defects such as chromatic aberration, yellow spots and dirt are detected conveniently.
As shown in fig. 1-3, in another embodiment, the continuous cup cover feeding device further comprises a rejecting mechanism 7 for driving unqualified cup covers to separate from the continuous cup cover conveying member 1; the rejecting motion of the rejecting mechanism 7 can be selected to adsorb the cup covers and move the cup covers to the side of the cup cover continuous conveying piece 1, or a jacking mechanism is adopted to push the cup covers away from the cup cover continuous conveying piece 1, or air flow is adopted to blow the cup covers away from the cup cover continuous conveying piece 1, such as a rejecting air flow nozzle (not shown in the figure), and the air flow blowing-off mode has the advantages of higher response speed and stronger operability. And a rejecting groove and a defective product box 71 positioned below the rejecting groove are arranged on the side of the continuous cup cover conveying piece 1 and used for bearing unqualified cup covers blown away from the continuous cup cover conveying piece 1. The rejecting mechanism 7 comprises at least three rejecting units, the rejecting units are arranged on the discharging sides of the first cup cover shooting assembly 2, the second cup cover shooting assembly 3 and the third cup cover shooting assembly 4 in groups, the groups are arranged in a mode that the shooting assemblies and the rejecting units are arranged adjacently along the conveying direction of the cup cover continuous conveying piece 1, and other shooting assemblies are not clamped between the shooting assemblies and the rejecting units. As shown in the figure, the arrangement sequence of the shooting assembly and the rejection unit is as follows: the first cup cover shooting assembly 2, the rejecting unit, the second cup cover shooting assembly 3, the rejecting unit, the third cup cover shooting assembly 4 and the rejecting unit reject unqualified defective products in time, and repeated shooting and comparison marks on unqualified products can be reduced. The images acquired by the three groups of shooting assemblies are further displayed by the display.
In another embodiment, as shown in fig. 5, the cup lid product detecting system further includes an outfeed continuous conveyor (outfeed conveyor belt 8), a stacking mechanism 9, and a material guide 10; the discharging conveyer belt 8 is connected with the cup cover continuous conveying piece 1; the stacking mechanism 9 is arranged at the discharge end of the discharge conveyer belt 8; the material guiding member 10 is disposed above the discharging conveyor belt 8 and includes a discharging chute or a discharging channel communicated with the stacking mechanism 9. The conveying directions of the two mutually connected conveying belts can be the same or different, preferably the same, the conveying belts are sequentially arranged, and the cup covers are connected more smoothly. In the figure, the material guiding member 10 comprises two side baffles and a top plate clamped between the two side baffles, and the side baffles, the top plate and the discharging conveyer belt 8 form a discharging channel. When the cup cover is positioned in the discharging channel, the cup cover is still moved to one side of the stacking mechanism 9 by the discharging conveyer belt 8. The feed inlet of the discharge channel is open, so that the cup cover can be conveniently guided into the discharge channel. The discharging continuous conveying piece can also be a roller way.
As shown in fig. 6-7, in another embodiment, the stacking mechanism 9 includes a base plate 91, a stacking channel 92, and a jacking mechanism 93; the base plate 91 is connected with the discharging channel, and the base plate 91 is provided with a limiting bulge 913 on the top surface and a jacking accommodating hole penetrating in the thickness direction; the stacking channel 92 is arranged above the top surface of the base plate 91 and surrounds the periphery of the jacking accommodating hole, the stacking channel 92 and the base plate 91 are combined into a lateral cup cover inlet 94, and the jacking accommodating hole is arranged between the limiting bulge 913 and the lateral cup cover inlet 94; a cup cover stacking and supporting piece is fixedly arranged on the inner wall, and a cup cover accommodating space is clamped between the cup cover stacking and supporting piece and the base plate 91; the jacking mechanism 93 penetrates through the jacking accommodating hole and is used for jacking the cup cover to the position above the cup cover stacking and supporting piece. The cup cover stacking and supporting piece is used for supporting the cup cover stack, and cup cover stacking and supporting blocks 921 are arranged in the figure, and the number of the cup cover stacking and supporting pieces is at least two. As an equivalent alternative to cup stack landing, the cup stack retainer may also be a radially smooth narrowing of at least one pair of sidewalls of the stacking channel 92. The inner diameter of the stacking channel 92 is larger than the outer diameter of the cup cover, and the circular diameter enclosed by the convex end of the cup cover stacking block in the stacking channel 92 is smaller than the outer diameter of the cup cover. Jacking mechanism 93 jacking bowl cover, when the bowl cover folded the tray butt with the bowl cover, the bowl cover took place plastic deformation, and the bowl cover displacement folded the tray top back deformation and resumes to the bowl cover, stacked the passageway 92 because of the dead weight on original bowl cover pushed down the bowl cover of jacking, realized piling up of bowl cover. The pan feeding side of spacing arch 913 can select to be provided with the sensor, perhaps spacing arch 913 is the sensor, and the sensor is used for the sensing bowl cover to slide to base plate 91 preset position to the start-up of control climbing mechanism 93.
In another embodiment, as shown in fig. 5, the discharge end working surface of the discharge conveyor belt 8 is an inclined conveying surface 81 gradually descending in height along the conveying direction; the top surface of the substrate 91 is an inclined top surface, a first end 911 of the inclined top surface is higher than a second end 912, and the inclined conveying surface 81 smoothly receives the first end 911. The discharge end of the discharge conveyor belt 8 and the substrate 91 are both inclined planes, and the cup cover output by the discharge conveyor belt 8 slides to the top surface of the substrate 91 due to inertia. Bowl cover ejection of compact stacking mechanism's simple structure is reasonable, utilizes inertia to realize stacking mechanism 9's bowl cover pan feeding, avoids further setting up the driving piece of propelling movement bowl cover in ejection of compact stacking mechanism, when reducing bowl cover transfer apparatus, realizes orderly high-efficient ejection of compact.
As shown in fig. 5, in another embodiment, a diversion member 82 and a pushing member 83 are fixedly arranged above the discharging conveyor belt 8; the two distributing surfaces 821 of the distributing member 82 extend from the tip to the two sides of the discharging conveyer belt 8; the cup cover compression joint position of the discharging conveying belt 8 is opposite to a shunting surface 821 along the conveying direction; the pushing piece 83 is used for pushing the cup cover to be opposite to the other flow dividing surface 821 in the conveying direction; the number of the material guiding members 10 and the stacking mechanisms 9 is more than two. The number of the flow dividing pieces 82 is equal to or larger than the row number of the cup covers output from the cup cover continuous conveying piece 1, and the width of the working surface of the discharging conveying belt 8 is also larger than that of the cup cover continuous conveying piece 1. In the figure, the number of the flow dividing pieces 82 corresponding to a single-row continuous cup cover conveying piece 1 is one, the flow dividing pieces 82 divide the working surface of the conveying belt into two flow channels, the discharge port of the single-row continuous cup cover conveying piece 1 is opposite to one of the flow channels along the conveying direction of the discharge conveying belt 8, the single-row cup covers are equally divided into the two flow channels by utilizing the matching operation of the flow dividing pieces 82 and the pushing pieces 83 (the feed side of the flow dividing pieces 82 is provided with a sensor 84 for sensing cup covers, and the pushing pieces 83 start pushing every other cup cover action according to signals of the sensor 84), the number of the single-row cup covers is equally divided into the two flow channels, the intervals between the cup covers in the flow channels are controlled, the structure is favorable for improving the discharge efficiency, the conveying speed of the continuous cup cover conveying piece 1 is matched with the conveying speed and the stacking speed of the discharge conveying belt 8, and the inertia cup covers are ensured to slide into the stacking assembly at proper time intervals. If the cup covers are lined up at the feed inlet of the stacking assembly, the cup covers do not have inertia of sliding into the stacking assembly, and the stacking assembly does not have cup cover feeding. The pushing member 83 is an airflow nozzle, is the same as the rejecting mechanism 7, and has the advantages of high response speed and strong operability. Furthermore, the number of the flow channels can be three or more than four, and the flow distribution of more than three flow channels for discharging the single row of cup covers is realized by increasing the pushing members 83 and configuring different parameters of the pushing members 83 (the formation of pushing members or the air flow speed of air flow spraying members).
In the figure, the number of the material guiding pieces 10 and the stacking mechanisms 9 is four, and the other two cup covers are stacked for standby, namely, each flow channel corresponds to two material guiding pieces 10; the material guiding member 10 further comprises a material guiding plate arranged on the feeding side of the discharge chute or the discharge channel, and the cup cover is guided into the target discharge chute or the discharge channel by adjusting the guide surface of the material guiding plate. Furthermore, the material guide plate is arranged above the inclined conveying surface 81, so that the cup cover can conveniently change the channel due to the inertia of the cup cover.
The cup cover product detection method of the embodiment comprises the following steps:
acquiring images of a single cup cover in the cup cover continuous conveying piece 1, wherein the images comprise a backlight-free top surface image, a backlight-free bottom surface image and a backlight top surface image;
obtaining a defect parameter, wherein the defect parameter is at least one of a length parameter, a chromatic aberration parameter, an area parameter and a contrast parameter;
and comparing the defect parameters and the parameter threshold values, and marking unqualified cup covers according to the comparison result.
The corresponding relationship between the defects of the cup cover and the defect parameters comprises but is not limited to: mosquito, area/diameter/color, ink oil stain, area/diameter, black dot, diameter, yellow dot, area/diameter, stain, area/diameter, color dot, diameter, color difference, comprehensive contrast, light transmission area/light transmission width, edge defect and cutting dislocation size.
The first cup cover shooting assembly 2, the second cup cover shooting assembly 3 and the third cup cover shooting assembly 4 simultaneously acquire images of cup covers corresponding to one another in the cup cover continuous conveying piece 1 in the conveying state. Specifically, the cup covers in the cup cover continuous conveying piece 1 are equally spaced or approximately equally spaced. The interval of adjacent shooting components is equal to the interval of adjacent cup covers or is an integral multiple of the interval of adjacent cup covers. Shoot when the three shooting subassembly of homoenergetic time more than, do benefit to and improve detection efficiency.
The working process of the cup cover product detection system is as follows:
s1: the cup covers are placed on the working surface of the differential conveying mechanism 6, and the differential conveying mechanism 6 continuously outputs the cup covers to the second conveying belt 12 at a conveying speed lower than that of the second conveying belt;
s2: the second conveyer belt 12 receives the cup covers and outputs the cup covers to the first conveyer belt 11, and the cup covers of the second conveyer belt 12 and the first conveyer belt 11 are distributed at intervals;
s3: when the cup cover moves to be right opposite to the shooting range of the shooting assembly, the first cup cover shooting assembly, the second cup cover shooting assembly and the third cup cover shooting assembly are started to collect images, in the process, the second conveying belt 12 and the first conveying belt 11 keep the conveying state with the same conveying speed, and the light supplementing assembly and the backlight are normally on; the cup covers of the unqualified products are subjected to image comparison marking, blown by a rejecting airflow nozzle which is combined with the shooting assembly, and fall into a defective product box 71 through a rejecting groove;
s4: first conveyer belt 11 is to 8 output list row bowl covers of ejection of compact conveyer belt, ejection of compact conveyer belt 8 is the same with 11 conveying speed of first conveyer belt, the list row bowl cover shunts into two via reposition of redundant personnel 82 to the bowl cover interval of adjacent ejection of compact around in with arranging increases, utilize bowl cover inertia, ejection of compact conveyer belt 8 is with the leading-in preset position of stacker mechanism 9 middle base plate of bowl cover, climbing mechanism 93 overlaps the bowl cover to the bowl cover and folds the tray 921 top, realize piling up of bowl cover, the bowl cover is folded the tray 921 and is supported the bowl cover on it and fold.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A cup lid product detection system, comprising:
the cup cover continuous conveying piece comprises a first conveying belt; the working surface of the first conveying belt is formed by at least two unit belts at intervals;
the first cup cover shooting assembly is arranged above the cup cover continuous conveying piece;
the second cup cover shooting assembly is arranged below the first conveying belt;
the third cup cover shooting assembly is arranged above the first conveying belt;
and the backlight part is arranged below the first conveying belt.
2. The cup cover product detection system of claim 1, further comprising a differential transport mechanism, a discharge end of the differential transport mechanism being in engagement with a feed end of the continuous cup cover transport.
3. The cup cover product detection system of claim 1, wherein the first cup cover camera assembly is a single cup cover camera assembly comprising a top surface camera element, a slope surface camera element, and a first light patch; the top surface shooting element is arranged above the slope surface shooting element, and the first light supplementing element is arranged between the slope surface shooting element and the continuous conveying element of the cup cover and between the slope surface shooting element and the top surface shooting element;
and/or the second cup cover shooting assembly is a single cup cover shooting assembly and comprises a bottom surface shooting element and a second light supplementing piece; the second light supplementing piece is arranged between the first conveying belt and the second light supplementing piece.
4. The cup cover product detection system of claim 1, further comprising a rejection mechanism for urging rejected cup covers away from the cup cover continuous transport; the rejecting mechanism comprises at least three rejecting units, and the rejecting units are arranged on the discharging sides of the first cup cover shooting assembly, the second cup cover shooting assembly and the third cup cover shooting assembly in a group.
5. The cup cover product detection system of claim 1, further comprising:
the discharging continuous conveying piece is connected with the cup cover continuous conveying piece in a supporting manner;
the stacking mechanism is arranged at the discharging end of the discharging continuous conveying piece;
and the material guide piece is arranged above the discharging continuous conveying piece and comprises a discharging groove or a discharging channel communicated with the stacking mechanism.
6. The cup lid product detection system of claim 5, wherein the stacking mechanism comprises:
the base plate is connected with the discharge chute or the discharge channel and is provided with a limiting bulge on the top surface and a jacking accommodating hole in the thickness direction;
the stacking channel is arranged around the jacking accommodating hole and combined with the top surface of the base plate to form a lateral cup cover inlet, and a cup cover stacking and supporting piece is arranged on the inner wall of the stacking channel; the jacking accommodating hole is arranged between the limiting bulge and the lateral cup cover inlet;
the jacking mechanism is arranged in the jacking accommodating hole and used for jacking the cup cover to the position above the cup cover stacking and supporting piece.
7. The cup cover product detection system of claim 5, wherein a discharge end working surface of the discharge continuous transport member is an inclined transport surface that gradually decreases in height along a transport direction; the top surface of the substrate is an inclined top surface, and the inclined conveying surface and the inclined top surface are in the same inclined direction and are smoothly connected.
8. The cup cover product detecting system of claim 5, wherein a flow dividing member and a pushing member are fixedly arranged above the discharging continuous conveying member;
the flow dividing piece divides the working surface of the discharging continuous conveying piece into at least two flow channels, and a feeding port of one flow channel is opposite to the cup cover continuous conveying piece along the conveying direction of the discharging continuous conveying piece;
the pushing part is used for pushing the cup cover to a material inlet of the other flow channel;
the number of the material guiding pieces and the stacking mechanisms is more than two.
9. A cup cover product detection method is characterized by comprising the following steps:
acquiring images of the cup cover in the cup cover continuous conveying piece, wherein the images comprise a backlight-free top surface image, a backlight-free bottom surface image and a backlight top surface image;
obtaining a defect parameter, wherein the defect parameter is at least one of a length parameter, a chromatic aberration parameter, an area parameter and a contrast parameter;
and comparing the defect parameters with the parameter threshold values, and marking unqualified cup covers according to the comparison result.
10. The method for inspecting cup lid products according to claim 9, wherein the first, second and third cup lid cameras simultaneously capture images of one-to-one corresponding cup lids of the continuous cup lid transport.
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| CN114871146B (en) | 2024-06-11 |
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