CN110239796B - Method and device for distributing target quantity of discrete articles - Google Patents
Method and device for distributing target quantity of discrete articles Download PDFInfo
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- CN110239796B CN110239796B CN201910324974.8A CN201910324974A CN110239796B CN 110239796 B CN110239796 B CN 110239796B CN 201910324974 A CN201910324974 A CN 201910324974A CN 110239796 B CN110239796 B CN 110239796B
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- 238000000034 method Methods 0.000 title claims abstract description 47
- 238000009826 distribution Methods 0.000 claims abstract description 13
- 238000003384 imaging method Methods 0.000 claims description 18
- 238000003860 storage Methods 0.000 claims description 15
- 239000002356 single layer Substances 0.000 claims description 10
- 230000000295 complement effect Effects 0.000 claims description 8
- 230000005484 gravity Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 abstract description 7
- 230000000007 visual effect Effects 0.000 abstract description 3
- 230000033001 locomotion Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000006187 pill Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000007947 dispensing tablet Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
- B65B1/30—Devices or methods for controlling or determining the quantity or quality or the material fed or filled
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B57/00—Automatic control, checking, warning, or safety devices
- B65B57/20—Applications of counting devices for controlling the feed of articles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quality & Reliability (AREA)
- Control Of Conveyors (AREA)
- Sorting Of Articles (AREA)
Abstract
A method and apparatus for dispensing a target quantity of discrete articles includes driving a conveyor to output the articles; continuously taking images of an image taking area positioned at the tail section of the conveyor, wherein the image taking area is arranged before the tail end of the conveyor and spans the conveying direction of the conveyor, and each article passes through the image taking area and is taken at least once before being output, so that the taken images are processed in real time to determine the quantity of the output articles; stopping the conveyor before the number of the output articles reaches the target number, and simultaneously continuously determining the number of the output articles until the articles are stopped to be output from the conveyor, so as to obtain a first distribution amount; the delta items are dispensed to achieve the target quantity of items. The image capturing area is arranged at the output section of the conveyor, the orientation of the object is stable, the shape and the size of the object are detected after visual image capturing are facilitated, the image capturing area crossing the conveyor is utilized, the image capturing and counting can be completed without a detection platform or a counting platform, the structure is simple, and the space is saved.
Description
Technical Field
The invention relates to the technical field of discrete article distribution, in particular to a method and a device for distributing a target quantity of discrete articles.
Background
It is often desirable to dispense discrete articles in a target quantity into a container in granular, sheet, or pellet form. Examples include dispensing tablets, pills, capsules, seeds, candies, or the like into bottles, bags, or other containers.
Since the articles are loaded into the container after being counted, the articles are broken by collision at the time of supply, foreign objects, or defective articles of the green tape, etc. need to be detected during the dispensing process.
In some dispensing tasks, the finished container must not contain less than a predetermined number of items. For example, when dispensing certain pills, it may be necessary to provide a complete treatment cycle, and therefore at least a predetermined number of items must be provided in each container.
On the other hand, the dispensed items may be expensive, so if too many containers contain more than a predetermined number of items, it increases the cost of production for the supplier of the items or the packaging mechanism.
In many dispensing machines, articles are transported along a conveyor and are separated into a plurality of individual columns at the end of the conveyor and collected in containers, during which each column of articles is counted one by a photosensor, and when a predetermined number is reached, the articles are prevented from falling into the container on the path of each column by physical separation, which is inherently less efficient because the articles are separated into a plurality of individual columns on the conveyor, the articles that can be transported over a certain transport area must be less than if they were not separated into individual columns, while also maintaining a distance between columns to install the photosensor and the physically separated mechanism described above.
U.S. patent No. 6,659,304 to Geltser et al entitled "box for a system for feeding, counting and dispensing discrete articles" discloses a high capacity box for an article counting and dispensing system that includes, among other things, a structure for feeding discrete articles in a single column toward an outlet aperture.
Application publication number CN103129783a entitled "method and apparatus for dispensing articles" discloses operating a conveyor to convey a plurality of articles toward an imaging device, wherein the articles are arranged in a single layer and at least some of the articles are conveyed in parallel; operating the imaging device to continuously capture images of an area directly below an end of the conveyor such that items falling from the conveyor are recorded in the images while in a trajectory; the images are processed in real time to continuously determine the number of falling items.
In the prior art, the method for counting the articles in a visual manner is to take an image and count the articles in the process of falling off the conveyor, but the size and shape of the articles cannot be stably detected because the orientation of the articles is indefinite in the process of falling off. Meanwhile, the image capturing area is arranged in the falling process of the article, so that the vertical height is required to be occupied, the overall height of the equipment is increased, and the operation is inconvenient.
When the conveyor is stopped, some articles still fall down due to inertia, and the system needs to judge whether the articles are completely stopped or not at intervals, so that more time is needed between the two start-stop periods, and the productivity of the whole system is relatively reduced.
Chinese patent No. 201420130214.6 describes a method for synchronously counting and detecting articles by means of a counting platform, and achieving a target number by means of a first dispensing amount and a compensation amount, but since articles usually need a certain distance to stabilize the motion posture of the articles after falling from a conveyor to the counting platform, the space occupied by the mechanism is relatively large, meanwhile, the articles in the certain distance are not monitored by the system, the random range of articles which still enter the counting area after stopping the conveyor is enlarged, the compensation amount required for the following is more, and the efficiency of the whole system is relatively low.
There is a need for a dispensing method and dispensing apparatus that is more efficient, simpler in construction, and more space efficient.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provide a distribution method which has higher efficiency, simpler structure and more space saving.
Another object of the present invention is to overcome the problems of the prior art and to provide a dispensing device that is more efficient, simpler in construction and more space-saving.
The technical scheme of the invention is as follows:
a method of dispensing a target quantity of discrete articles, comprising
Driving the conveyor to move the articles in a single layer toward the end of the conveyor and output the articles;
continuously taking images of an image taking area positioned at the tail section of the conveyor, wherein the image taking area is arranged before the tail end of the conveyor and spans the conveying direction of the conveyor, and each article passes through the image taking area and is taken at least once before being output, and the article is also separated from the conveyor when leaving the image taking area;
processing the acquired images in real time to determine the number of the articles to be output;
stopping the conveyor before the number of the output articles reaches the target number, and simultaneously continuously determining the number of the output articles until the articles are stopped to be output from the conveyor, so as to obtain the number of the first-time distributed articles;
and calculating the quantity of the articles differing from the quantity of the first-time distributed articles and distributing the articles differing from the quantity of the first-time distributed articles.
Wherein each item passing through the imaging region is imaged at least once in its entirety.
Comparing the object image in the image with the image of the preset object, judging the comparison result, and eliminating the object when the comparison result is inconsistent.
And when the image of the object in the image is different from any one of the preset image of the object in the shape, color and size, judging that the comparison result is inconsistent.
Wherein the first dispensed articles and the differential articles output from the conveyor are collected into containers at the dispensing station, and the containers are output after the containers are finished receiving the articles.
Wherein containers are continuously supplied to the dispensing stations to receive the first dispensed articles output from the conveyor, and the corresponding delta articles.
Wherein the pooled items are temporarily stored before the next container reaches the dispensing station.
Wherein when a first-time dispensed item of a stack is not received by the container, a next stack of first-time dispensed items is temporarily stored.
The conveyor divides the articles into a plurality of single-layer articles on the surface of the conveyor, and each article is an article row formed by single articles.
The articles distributed with the difference are output by the difference compensating conveyor, and the articles output by the difference compensating conveyor are gathered and output to the container together with the first distributed articles after being completely imaged by the imaging area.
And comparing the object image in the image acquired by the image acquisition device arranged on the compensation conveyer with the image of the preset object, judging a comparison result, and eliminating the object when the comparison result is inconsistent.
The image capturing area spans the conveyor and the complementary conveyor, and each article output by the conveyor and the complementary conveyor is completely captured at least once.
And an inertial output area is arranged in front of the output end in the image capturing area, the objects in the inertial output area are output after the conveyor is stopped, and the conveyor is stopped when the sum of the number of the objects in the inertial output area and the number of the objects which are output is smaller than the target number.
And the output section of the image capturing area of each conveyor is provided with an inertia output section, the articles in the inertia output section are output after the conveyor is stopped, and the conveyor is stopped when the sum of the number of the output articles plus the number of the articles in the inertia output section and the number of the articles in one or more temporary storage devices is the same as the target number.
The length direction of the image capturing area comprises an input side boundary and an output side boundary, the input side boundary is arranged on the conveyor, the output side boundary is arranged before the end line of the conveyor, the distance between the output side boundary and the end line of the conveyor is smaller than the shortest distance between the gravity center of an article and the edge of the article, the distance between the input side boundary and the output side boundary is larger than the maximum length of the article, each article passes through the image capturing area and is captured at least once before being output, and the article leaves the conveyor when leaving the image capturing area.
The length direction of the image capturing area comprises an input side boundary and an output side boundary, the input side boundary is arranged on the conveyor, the output side boundary is coincided with the tail end line of the conveyor, the distance between the input side boundary and the output side boundary is larger than the maximum length of the article, each article passes through the image capturing area and is captured at least once before being output, and the article is separated from the conveyor when leaving the image capturing area.
The length direction of the image capturing area comprises an input side boundary and an output side boundary, the input side boundary is arranged on the conveyor, the output side boundary is arranged outside a conveyor end line, the distance between the input side boundary and the conveyor end line is larger than the maximum length of the articles, each article is captured at least once when being captured in the image capturing area on the conveyor before being output, and the articles leave the conveyor when leaving the image capturing area.
Another technical scheme of the invention is as follows:
a dispensing device for a method of dispensing discrete articles,
comprises a feed bin for storing articles and continuously supplying articles to a conveyor;
a conveyor for laying the articles into a single layer and outputting,
the image capturing device is used for continuously capturing images of the articles passing through the image capturing area of the conveyor;
the central processing and control platform is used for processing the images acquired by the image acquisition device in real time to calculate the quantity of all articles passing through the image acquisition area, and detecting and judging the images of the articles, wherein the image acquisition area is arranged in front of the tail end of the conveyor and spans the conveying direction of the conveyor, and the length and the width of the image acquisition area are set so that each passing article is at least completely imaged once;
a container for receiving the articles output by the conveyor;
and the difference compensating device is used for distributing the difference objects to the container so as to enable the objects in the container to reach the target quantity.
Wherein, be provided with the collector under the output of conveyer, collect the article of output from the conveyer and the article of output from the compensation mechanism to the container.
Wherein, the output end of the collector is provided with a gate, and the collected objects are temporarily stored on the gate before the container arrives.
Wherein, the entrance end of the collector is provided with a gate, and before the first distributing articles of a pile output by the conveyor are not received by the container, the next first distributing articles of the pile are temporarily stored on the gate.
Wherein the conveying surface of the conveyor is provided with a plurality of channels parallel to the conveying direction;
wherein the cross section of the channel is V-shaped.
The beneficial effects are that:
(1) The invention sets the image capturing area at the output section of the conveyer, the object is supported by the conveyer, the orientation is stable, the shape and the size of the object are conveniently detected after visual image capturing, the image capturing and the counting can be completed by utilizing the image capturing area crossing the conveyer without passing through the detection platform or the counting platform, compared with the conveyer with the detection platform or the counting platform, the invention has the advantages of reduced length, simple structure and space saving.
(2) Because the image capturing is not needed when the articles fall down, the image capturing area does not occupy the vertical height, the height of the whole equipment can be reduced, and the operation is more convenient. Meanwhile, the drop of the articles from the conveyor to the container is reduced, the impact of the articles is reduced, the time for collecting the articles to the container is shortened, and the distribution efficiency is improved.
(3) The length of the imaging area required to capture a complete image of an article can be relatively short, and the overall efficiency is reduced, relative to the length of the imaging area required to capture a complete image of an article for counting or shape detection, if the imaging area is set to be relatively short, because the article is moving faster due to gravity acceleration during its descent after leaving the conveyor, the greater the length of the imaging area required to capture a complete image of an article for counting or shape detection. The method of the invention can effectively accelerate the time of image processing, thereby improving the distribution efficiency.
(4) When the conveyor is stopped, although the articles still move and output due to inertia, the system knows the movement and stopping condition of the articles at the outlet end of the conveyor in real time, and the system can judge the stopping output of the articles more quickly, so that the time interval required between the two start-stop periods is shorter, and the efficiency of the whole system is improved.
(5) The articles are monitored before leaving the conveyor, and the quantity of the articles which are output after stopping the conveyor can be estimated in advance due to inertia, so that the quantity of the articles which are distributed for the first time can be controlled to be more close to the target quantity, the quantity of the articles which need to be compensated is reduced, and the distribution efficiency is greatly improved.
Drawings
FIG. 1 is a schematic view of an imaging region of a method of dispensing a target quantity of discrete articles of the present invention.
FIG. 2 is a schematic view of a second imaging region of one method of dispensing a target quantity of discrete articles of the present invention.
FIG. 3 is a schematic view of a third imaging region of a method of dispensing a target quantity of discrete articles of the present invention.
FIG. 4 is a schematic illustration of the inertial output area of one method of dispensing a target quantity of discrete articles of the present invention.
Fig. 5 is a top view of a dispensing device of the present invention.
Fig. 6 is a schematic view of the structure of a dispensing device of the present invention with a collector gate.
Fig. 7 is a schematic view of a compensating mechanism of a dispensing device of the present invention outputting an article.
Fig. 8 is a schematic view of a structure of a dispensing device of the present invention using a conveyor with channels.
Fig. 9 is a schematic view of a dispensing structure of a dispensing device of the present invention.
The reference numerals are as follows:
1-conveyor, 101-channel
2-image capturing device, 201-image capturing region
3-article, 4-compensating mechanism
5-collector, 501-collector first gate, 502-collector second gate,
6-a container.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
A method of dispensing a target quantity of discrete articles, as shown in fig. 1-7, comprising
Driving the conveyor to move the articles in a single layer toward the end of the conveyor and output the articles;
continuously taking images of an image taking area positioned at the tail section of the conveyor, wherein the image taking area is arranged at the tail section of the conveyor and spans the conveying direction of the conveyor, and each article passes through the image taking area and is taken at least once before being output, and the article is also separated from the conveyor when leaving the image taking area;
processing the acquired images in real time to determine the number of the articles to be output;
stopping the conveyor before the number of the output articles reaches the target number, and simultaneously continuously determining the number of the output articles until the articles are stopped to be output from the conveyor, so as to obtain a first distribution amount;
and calculating the quantity of the articles differing from the quantity of the first-time distributed articles and distributing the articles differing from the quantity of the first-time distributed articles.
The image capturing counting method of the invention is characterized in that when each article passes through the image capturing area, the image of each article appears in the acquired image, the position of each article in each frame of images acquired continuously is tracked, and when the image of each article disappears in the acquired image, the counting is increased by one. Assuming that the length of the object is L, the length of the image capturing area is W, the image capturing frequency is f, and the object speed is V, when the object passes through the image capturing area, the condition that the object is captured at least once is,
W>V/f
and the condition that the article is completely imaged at least once is that,
W>(V/f)+L
an article completely exiting the imaging zone, where the distance between the exit end of the imaging zone and the exit end of the conveyor is sufficiently small (less than the minimum distance between the center of gravity of the article and the edge of the article), will be off the conveyor surface and gravity will cause the article to automatically leave the conveyor, so that the number of articles completely exiting the imaging zone, whether the conveyor is in a driven or stopped state, is equivalent to the number of articles output by the conveyor.
The first dispensed articles and the differential articles output from the conveyor are collected into containers at the dispensing station, and after the containers are finished receiving the articles, the containers are output and continuously supplied to the dispensing station to receive the first dispensed articles output from the conveyor and the corresponding differential articles.
The method can continuously distribute the object quantity to the container, and has high continuous operation automation degree and high production efficiency.
The pooled items are buffered before the next container reaches the dispensing station.
The problem that the continuous containers are already distributed in the conveying process, but the containers do not reach the output position is solved, namely the distribution time is longer than the container in-place time, if the containers need to be waited for in-place, the distribution efficiency of the equipment is greatly wasted, and the collected articles can be temporarily stored by utilizing the temporary storage function, namely the equipment continues to distribute the next target quantity of articles when the containers do not reach the output position, but temporarily stores the articles in output, and the distribution is performed after the containers are in place, so that the time wasted by waiting for the containers to be in place is avoided. The method can be controlled by an electric control gate.
When a stack of first-order dispensing items is not received by the container, the next stack of first-order dispensing items is temporarily stored.
The time of the dispensed articles entering the container is influenced by the falling height and the falling ejection time of the articles, when the dispensed articles do not completely enter the container, the first dispensed articles of the next stack are continuously dispensed and temporarily stored, the time of waiting the articles entering the container can be avoided, and the overall dispensing efficiency is improved.
The invention can further divide the articles into a plurality of single-layer articles on the surface of the conveyor, wherein each article is an article row formed by single articles, which can conveniently make the articles stand out in the image and improve the accuracy of identification and detection.
Image capturing area: each item passing through the imaging region is imaged at least once in its entirety.
Each article passing through the image capturing area is completely captured at least once; comparing the object image in the image with the image of the preset object, judging the comparison result, and eliminating the object when the comparison result is inconsistent.
The inconsistent comparison results are as follows: and when the image of the object in the image is different from any one of the preset image of the object in the shape, color and size, judging that the comparison result is inconsistent. The invention can be used for directly rejecting the unqualified articles, or rejecting the articles by using a rejecting channel when the conveyor outputs the articles, or rejecting the whole container to which the article stack of the articles is finally gathered.
The articles with the compensation difference can pass through the image capturing area at the same time, and can be detected in the following modes:
the articles distributed with the difference are output by the difference compensating conveyor, and the articles output by the difference compensating conveyor are gathered and output to the container together with the first distributed articles after being completely imaged by the imaging area.
And comparing the object image in the image acquired by the image acquisition device arranged on the compensation conveyor with the image of the preset object, judging a comparison result, and eliminating the object when the comparison result is inconsistent.
The image capturing area spans the conveyor and the complementary conveyor, and each article output by the conveyor and the complementary conveyor is at least completely captured once.
The image capturing area comprises the following steps of:
the length direction of the image capturing area comprises an input side boundary and an output side boundary, the input side boundary is arranged on the conveyor, the output side boundary is arranged before the end line of the conveyor, the distance between the output side boundary and the end line of the conveyor is smaller than the distance between the gravity center of the object and the shortest outer diameter of the object, the distance between the input side boundary and the output side boundary is larger than the maximum length of the object, each object passes through the image capturing area and is captured at least once before being output, and the object leaves the conveyor when leaving the image capturing area.
The image capturing area is positioned on the surface of the conveyor, the counting function can be completely realized, the image of the picture is detected conveniently, and the recognition rate is high.
The image capturing area of the invention can also be designed in such a way that the input side edge is arranged on the conveyor, the boundary of the output side coincides with the end line of the conveyor, the distance between the boundary of the input side and the boundary of the output side is larger than the maximum length of the articles, each article passes through the image capturing area and is captured at least once before being output, and the articles leave the conveyor when leaving the image capturing area.
The image capturing area of the invention can also be designed in such a way that the input side edge is arranged on the conveyor, the output side edge is arranged outside the end line of the conveyor, the distance between the input side edge and the output side edge is larger than the maximum length of the articles, each article passes through the image capturing area and is captured at least once before being output, and the articles leave the conveyor when leaving the image capturing area.
By adopting the method, the setting process of the image capturing area can be easier, and the interference during the operation of the machine is reduced.
The invention also provides a distribution method using the inertial region counting, which comprises the following steps:
an inertial output area is arranged in front of the output end of the image capturing area of the conveyor, the articles in the inertial output area are output after the conveyor is stopped, and the conveyor is stopped when the sum of the number of the articles in the inertial output area and the number of the articles which are output is smaller than the target number. The inertia output area is the area where the articles which are continuously output due to inertia in the image capturing area are positioned when the conveyor is stopped every time, the quantity of the articles in the inertia output area is identified and added to the quantity of the articles which are output to serve as the basis for stopping the conveyor, and after the conveyor is stopped, the quantity of the articles which are actually output can be more similar to the target quantity, so that the quantity of the articles which need to be compensated is reduced.
The stop conveyor is essentially a stop drive conveyor, and there are two inertial amounts after the stop drive conveyor, one is the inertial amount of the conveyor itself and the other is the inertial amount of the article itself, and the articles in the inertial output area of the present application include articles output under the influence of the two inertial amounts.
Example 2
Another technical scheme of the invention is as follows:
a dispensing device for a method of dispensing discrete articles,
comprises a feed bin for storing articles and continuously supplying articles to a conveyor;
a conveyor 1 for laying out articles 3 in a single layer and outputting,
an image capturing device 2 for continuously capturing images of the articles passing through the image capturing area 201 of the conveyor 1;
the central processing and control platform is used for processing the images acquired by the image capturing device 2 in real time to calculate the quantity of all articles passing through the image capturing area 201, and detecting and judging the images of the articles, wherein the image capturing area 201 is arranged before the tail end of the conveyor 1 and spans the conveying direction of the conveyor 1, and the length and the width of the image capturing area 201 are set so that each passing article is completely captured at least once;
a container 6 for receiving the articles output by the conveyor;
the difference compensating mechanism 4 is used for distributing the difference to the container 6 so as to enable the internal articles of the container 6 to reach the target quantity.
The invention can finish detection, counting and distribution by the different positions of the image capturing areas 201 without the need of a traditional counting platform or height drop, and has high efficiency and small space.
An integrator 5 is provided below the output end of the conveyor 1 to integrate the articles output from the conveyor 1 and the articles output from the compensating mechanism 4 into a container.
The output end of the collector 5 is provided with a collector gate 503, and the collector 5 is opened or closed to output the articles 3, and the collected articles are temporarily stored on the collector gate before the containers arrive. The collector gate 503 is in electrical communication with the central processing and control platform. The central processing and control platform controls the collector gate 503 to be opened or closed, i.e. temporarily stores the output of the dispensed articles 3, without waiting for the container to be in place, thereby reducing the waiting time and improving the dispensing efficiency of the whole machine.
The temporary storage gate 501 and the fixing plate 502 are arranged below the inlet end of the collector, the fixing plate 502 is used for fixing the gate, the inclined arrangement of the fixing plate 502 can also play a role in collecting articles, and the temporary storage gate 501 distributes articles in the temporary storage gate 501 for the first time in the next pile of temporary storage conveyor before the distributed articles are not received by the container. The temporary storage gate 401 is electrically connected with the central processing and control platform. The cpu and control platform controls the register shutter 401 to open or close, and switches between output and register modes.
The conveyer 1 is provided with a driving mechanism, the driving mechanism is in electric signal connection with a central processing and control platform, the central processing and control platform controls the starting and stopping time of the conveyer 1, the existing driving mode is usually electromagnetic driving vibration disc, and the central processing and control platform controls the motion state of a motor so as to control the starting and stopping period.
A container 6 conveyor line is provided for continuously conveying containers 6 to the outlet of the collecting channel of the collector 5, and a diverting and swinging gate is provided for diverting a succession of two stacks of released articles 3 to two different containers 6.
The conveying surface of the conveyor 1 is provided with a plurality of channels 101 parallel to the conveying direction. The channel 101 can form the single arranged article 3 row with article 3, when passing through the image capturing area 201, can be clearly discerned by the image capturing device 2, improves recognition efficiency, because some abnormal article 3, in the transmission process, is easy to stagger and form an article 3, after the image capturing, loading and image capturing, when the central processing and control platform processes the picture, is easy to discern the article 3 as an article 3, can be effectual with article 3 and article 3 direct boundary clear through the channel 101, improves the accuracy of discernment.
The cross section of the channel 101 is V-shaped. The channel 101 with this shape makes it easier to divide the articles into individual rows and stabilize the conveyor effect.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (24)
1. A method of dispensing a discrete item of a target item quantity, characterized by: comprising
Driving the conveyor to move the articles in a single layer toward the end of the conveyor and output the articles;
continuously capturing images of an image capturing area positioned at the tail section of the conveyor, wherein the image capturing area spans the conveying direction of the conveyor, the length direction of the image capturing area comprises an input side boundary and an output side boundary, the input side boundary is arranged on the conveyor, the output side boundary is arranged in front of the tail end line of the conveyor,
when the articles leave the image capturing area, the articles also leave the conveyor, and each article passes through the image capturing area and is captured at least once before leaving the conveyor;
processing the acquired images in real time to determine the number of the articles to be output;
stopping the conveyor before the number of the output articles reaches the target number of the articles, and simultaneously continuously determining the number of the output articles until the articles are stopped to be output from the conveyor, so as to obtain first-time distribution articles;
and calculating the quantity of the articles differing from the quantity of the first-time distributed articles and distributing the articles differing from the quantity of the first-time distributed articles.
2. A method of dispensing discrete items of a target item quantity as claimed in claim 1, wherein: each item passing through the imaging region is imaged at least once in its entirety.
3. A method of dispensing discrete items of a target item quantity as claimed in claim 2, wherein: comparing the object image in the image with the image of the preset object, judging the comparison result, and eliminating the object when the comparison result is inconsistent.
4. A method of dispensing a discrete item of a target item quantity as claimed in claim 3, wherein: and when the image of the object in the image is different from any one of the preset image of the object in the shape, color and size, judging that the comparison result is inconsistent.
5. A method of dispensing discrete items of a target item quantity as claimed in claim 1, wherein: the first dispensing article and the differential article output from the conveyor are collected into a container at the dispensing station, and after the container has completed receiving the article, the container is output.
6. A method of dispensing discrete items of a target item quantity as claimed in claim 5, wherein: the containers are continuously supplied to the dispensing stations to receive the first dispensed article quantity output from the conveyor and the corresponding delta articles.
7. A method of dispensing discrete items of a target item quantity as claimed in claim 6, wherein: the pooled items are buffered before the next container reaches the dispensing station.
8. A method of dispensing discrete items of a target item quantity as claimed in claim 6, wherein: when the first-order dispensing item quantity of one stack is not received by the container, the first-order dispensing item quantity of the next stack is temporarily stored.
9. A method of dispensing discrete items of a target item quantity as claimed in claim 1, wherein: the conveyor has articles separated into multiple rows of single-layer articles on the conveyor surface, each row of articles being a row of articles made up of individual articles.
10. A method of dispensing discrete items of a target item quantity as claimed in claim 1, wherein: the articles distributed with the difference are output by the difference compensating conveyor, and the articles output by the difference compensating conveyor are gathered and output to the container together with the first distributed articles after being completely imaged by the imaging area.
11. A method of dispensing discrete items of a target item quantity as claimed in claim 10, wherein: and comparing the object image in the image acquired by the image acquisition device arranged on the compensation conveyor with the image of the preset object, judging a comparison result, and eliminating the object when the comparison result is inconsistent.
12. A method of dispensing discrete items of a target item quantity as claimed in claim 10, wherein: the image capturing area spans the conveyor and the complementary conveyor, and each article output by the conveyor and the complementary conveyor is at least completely captured once.
13. A method of dispensing discrete items of a target item quantity as claimed in claim 1, wherein: and an inertial output area is arranged in front of the output end in the image capturing area, the articles in the inertial output area are output after the conveyor is stopped, and the conveyor is stopped when the sum of the number of the articles in the inertial output area and the number of the articles which are output is smaller than the number of the target articles.
14. A method of dispensing discrete items of a target item quantity as claimed in claim 1, wherein: the distance between the output side boundary and the end line of the conveyor is smaller than the shortest distance between the center of gravity of the object and the edge of the object, the distance between the input side boundary and the output side boundary is larger than the maximum length of the object, and each object passes through the image capturing area and is captured at least once before being output, and the object leaves the conveyor when leaving the image capturing area.
15. A method of dispensing discrete items of a target item quantity as claimed in claim 1, wherein: the length direction of the image capturing area comprises an input side boundary and an output side boundary, the input side boundary is arranged on the conveyor, the output side boundary is coincided with the tail end line of the conveyor, the distance between the input side boundary and the output side boundary is greater than the maximum length of the articles, each article passes through the image capturing area and is captured at least once before being output, and the articles leave the conveyor when leaving the image capturing area.
16. A method of dispensing discrete items of a target item quantity as claimed in claim 1, wherein: the length direction of the image capturing area comprises an input side boundary and an output side boundary, the input side boundary is arranged on the conveyor, the output side boundary is arranged outside a conveyor end line, the distance between the input side boundary and the conveyor end line is larger than the maximum length of the articles, each article is captured at least once when being captured in the image capturing area on the conveyor before being output, and the articles leave the conveyor when leaving the image capturing area.
17. A dispensing device using the method of dispensing discrete items of a target item quantity according to any one of claims 1 to 16, characterized in that:
comprises a feed bin for storing articles and continuously supplying articles to a conveyor;
a conveyor for laying the articles into a single layer and outputting,
the image capturing device is used for continuously capturing images of the articles passing through the image capturing area of the conveyor;
the image capturing area is arranged at the tail section of the conveyor and spans the conveying direction of the conveyor, and the length and the width of the image capturing area are set so that each passing object is at least completely captured once;
the central processing and control platform is used for processing the images acquired by the image acquisition device in real time to calculate the quantity of all articles passing through the image acquisition area, detecting and judging the images of the articles,
a container for receiving the articles output by the conveyor;
and the difference compensating device is used for distributing the difference objects to the container so that the objects in the container reach the target object quantity.
18. The apparatus for dispensing discrete items of a target item quantity according to claim 17, wherein: and a collector is arranged below the output end of the conveyor and used for collecting the articles output from the conveyor and the articles output from the compensating mechanism to the container.
19. The apparatus for dispensing discrete items of a target item quantity according to claim 18, wherein: the output end of the collector is provided with a collector gate, the collector is opened or closed to output articles, and the collected articles are temporarily stored on the collector gate before the container arrives; the collector gate is electrically connected with a central processing and control platform, and the central processing and control platform controls the collector gate to be opened or closed.
20. The apparatus for dispensing discrete items of a target item quantity according to claim 17, wherein: a temporary storage gate and a fixed plate are arranged below the inlet end of the collector, and the fixed plate is used for fixing the gate, so that the temporary storage gate distributes the articles in the temporary storage gate for the first time in the next pile of temporary storage conveyor before the distributed articles are not received by the container; the temporary storage gate is connected with the central processing and control platform through an electric signal, and the central processing and control platform controls the temporary storage gate to be opened or closed, and the temporary storage gate is switched under the output and temporary storage modes.
21. The apparatus for dispensing discrete items of a target item quantity according to claim 17, wherein: the conveying surface of the conveyor is provided with a plurality of channels parallel to the conveying direction.
22. The apparatus for dispensing discrete items of a target item quantity according to claim 21, wherein: the cross section of the channel is V-shaped.
23. The apparatus for dispensing discrete items of a target item quantity according to claim 17, wherein: the image capturing area spans the conveyor and the complementary conveyor, and each article output by the conveyor and the complementary conveyor is at least completely captured once.
24. The apparatus for dispensing discrete items of a target item quantity according to claim 17, wherein: the image capturing area spans the conveyor and the compensating conveyor respectively, and each article output by the conveyor and the compensating conveyor is at least completely captured once.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910324974.8A CN110239796B (en) | 2019-04-22 | 2019-04-22 | Method and device for distributing target quantity of discrete articles |
| PCT/CN2019/089906 WO2020215448A1 (en) | 2019-04-22 | 2019-06-04 | Method for dispensing target number of discrete items and dispensing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910324974.8A CN110239796B (en) | 2019-04-22 | 2019-04-22 | Method and device for distributing target quantity of discrete articles |
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| CN110239796A CN110239796A (en) | 2019-09-17 |
| CN110239796B true CN110239796B (en) | 2024-01-16 |
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| CN201910324974.8A Active CN110239796B (en) | 2019-04-22 | 2019-04-22 | Method and device for distributing target quantity of discrete articles |
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| CN (1) | CN110239796B (en) |
| WO (1) | WO2020215448A1 (en) |
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| DE102019127664A1 (en) | 2019-10-15 | 2021-04-15 | INTRAVIS Gesellschaft für Lieferungen und Leistungen von bildgebenden und bildverarbeitenden Anlagen und Verfahren mbH | Method and arrangement for filling plastic parts |
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| WO2020215448A1 (en) | 2020-10-29 |
| CN110239796A (en) | 2019-09-17 |
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