WO2020215448A1

WO2020215448A1 - Method for dispensing target number of discrete items and dispensing apparatus

Info

Publication number: WO2020215448A1
Application number: PCT/CN2019/089906
Authority: WO
Inventors: 陈国明; 张思学; 彭廷宣
Original assignee: 达尔嘉(广州)标识设备有限公司
Priority date: 2019-04-22
Filing date: 2019-06-04
Publication date: 2020-10-29
Also published as: CN110239796A; CN110239796B

Abstract

A method and apparatus for dispensing a target number of discrete items, the method comprising: driving a conveyor to output items; performing continuous image capture at an image capture area located at an end section of the conveyor, the image capture area being set before the end of the conveyor and spanning the conveying direction of the conveyor; before being outputted, each item traversing the image capture area and undergoing image capture at least once; processing the obtained images in real time so as to determine the number of outputted items; stopping the conveyor before the number of outputted items reaches a target number; at the same time, continuing to determine the number of the outputted items until the items stop being outputted from the conveyor so as to obtain a first dispensed number; and dispensing the difference in the number of items so as to reach the target number of items. The image capture area is provided at an output section of the conveyor, and the orientation of the items is stable, which facilitates the detection of the shape and size of the items after visual image capture. By using the image capture area that spans the conveyor, image capture and counting can be completed without needing to traverse a detection platform or a counting platform, thus simplifying the structure and saving space.

Description

Method and device for distributing target quantity of discrete articles

Technical field

The present invention relates to the technical field of discrete item distribution, in particular to a method and a distribution device for distributing a target quantity of discrete items.

Background technique

It is often necessary to distribute granular, flake, or small pieces of discrete items into containers according to a target quantity. Examples include dispensing tablets, pills, capsules, seeds, candies or the like into bottles, bags or other containers.

Since the items are put into the container after being counted, the items are damaged due to collision during the supply, foreign objects, or items with defects in Bunsen, etc., all need to be detected during the distribution process.

In some distribution tasks, the completed container must not contain less than the predetermined number of items. For example, when certain pills are dispensed, a complete treatment cycle may have to be provided, so 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 production cost of the item's supplier or packaging organization.

In many distribution machines, the items are transported along the conveyor, and are divided into a number of single rows to fall at the end of the conveyor and collected in the container. During the falling process, the items in each row are counted by the photoelectric sensor. When the predetermined quantity is reached, physical separation is used to prevent items from falling into the container on the channel of each column. Such a mechanism is inherently inefficient because the items are divided into multiple single rows on the conveyor and can be transported within a certain conveying area. There must be fewer items than those that do not need to be divided into single rows. At the same time, a certain distance must be maintained between the rows to install the photoelectric sensors and the physical separation mechanism described above.

U.S. Patent No. 6,659,304 to Geltser et al. entitled "Box for a system for feeding, counting, and distributing discrete objects" discloses a high-capacity cassette for an object counting and dispensing system, which particularly includes The structure of feeding discrete objects in a single row along the outlet holes.

Application Publication No. CN103129783A entitled "Method and Apparatus for Distributing Articles" discloses operating a conveyor to convey a plurality of articles toward the imaging device, wherein the articles are arranged in a single layer and are conveyed in parallel At least some of; operating the imaging device to continuously capture an image of the area directly below the end of the conveyor, so that items falling from the conveyor are recorded in the image while in the track; The images are processed in real time to continuously determine the number of falling items.

In the prior art, the method of counting items visually is to capture and count the items while they leave the conveyor and fall. However, because the items are in an uncertain orientation during the process of falling, the items cannot be counted. The size and shape of the product are inspected stably. At the same time, because the image capturing area is set in the process of the item falling, it needs to occupy the vertical height, and the overall height of the device also increases, which is inconvenient to operate.

Also, the image capturing and counting starts after the items leave the conveyor. When the conveyor is stopped, some items will continue to fall due to inertia, and the system will need to wait a while to determine whether the items are completely stopped. , The time between the two start-stop cycles also needs more time, and the capacity of the entire system is relatively reduced.

Chinese invention patent CN201420130214.6 describes a method of synchronously counting and detecting items by means of a counting platform, and a method to achieve the target quantity with the first distribution amount and supplementary amount, but because the items fall from the conveyor to the counting platform Later, it often takes a certain distance to stabilize the movement posture of the items before taking the image. The mechanism takes up a larger space. At the same time, the items within this distance are not monitored by the system, and they will continue to count after stopping the conveyor. The random range of the items in the area will also be expanded, the subsequent compensation will be more needed, and the efficiency of the entire system will be lower.

What is needed is a distribution method and a distribution device that are more efficient, simpler in structure, and more space-saving.

Summary of the invention

The purpose of the present invention is to overcome the problems in the prior art and provide a distribution method with higher efficiency, simpler structure, and more space-saving distribution method.

Another objective of the present invention is to overcome the problems existing in the prior art and provide a distribution device with higher efficiency, simpler structure, and more space-saving.

The technical scheme of the present invention is as follows:

A method of distributing a target quantity of discrete items, including

Drive the conveyor to move the items to the end of the conveyor in a single-layer state and output;

Continuously take images of an imaging area at the end of the conveyor. The imaging area is set before the end of the conveyor and across the conveying direction of the conveyor. Each item passes through the imaging area before being output. And be captured at least once, and the item leaves the conveyor when it leaves the capturing area;

Process the captured images in real time to determine the number of output items;

Before the number of items to be output reaches the target quantity, stop the conveyor, and at the same time continue to determine the number of items to be output until the items stop output from the conveyor, and obtain the number of first distributed items;

Calculate the number of items that differ between the number of target items and the number of items allocated for the first time, and allocate the items with the difference.

Among them, each item passing through the imaging area is completely captured at least once.

Wherein, the item image in the image is compared with the preset item image to determine the comparison result, and when the comparison result is inconsistent, the item is rejected.

Wherein, when the shape, color, and size of the item image in the image are different from the preset item image, it is determined that the comparison result is inconsistent.

Among them, the first dispensed items and the difference items output from the conveyor are collected to the container on the distribution station, and the container is output after the container has finished receiving the items.

Among them, the container is continuously supplied to the distribution station to receive the first distribution item output from the conveyor and the corresponding difference item.

Among them, when the next container does not reach the distribution station, temporarily store the collected items.

Among them, when a pile of first distributed items is not received by the container, temporarily store the next pile of first distributed items.

Wherein, the conveyor divides the articles into multiple rows of single-layer articles on the surface of the conveyor, and the articles in each row are rows of articles composed of a single article.

Among them, the distributed goods are output by the compensation conveyor, and the goods output by the compensation conveyor are completely captured through the imaging area and then collected and output to the container together with the first distributed items.

Wherein, the article image in the image obtained by the image capturing device provided on the compensation conveyor is compared with the preset article image to determine the comparison result, and when the comparison result is inconsistent, the article is rejected.

Among them, the image capturing area spans the conveyor and the compensation conveyor, and each item output by the conveyor and the compensation conveyor is completely imaged at least once.

Wherein, an inertial output area is provided in front of the output terminal in the image capturing area, and the items in the inertial output area will be output after stopping the conveyor. When the sum of the number of items in the inertial output area and the number of items output is less than Target number, stop the conveyor.

Among them, an inertial output section is provided at the exit section of the imaging area of each conveyor. The items in the inertial output section will be output after the conveyor is stopped. When the number of items that have been output plus the number of items in the inertial output section When the sum of the number of items in one or more registers is the same as the target number, stop the conveyor.

Wherein, the length direction of the imaging area includes an input side boundary and an output side boundary, the input side boundary is set on the conveyor, the output side boundary is set before the end line of the conveyor, and the distance between the output side boundary and the end line of the conveyor Less than the shortest distance between the center of gravity of the item and its edge, the distance between the input side boundary and the output side boundary is greater than the maximum length of the item, each item passes through the imaging area and is captured at least once before being output, and the item leaves the imaging area Time also leaves the conveyor.

Wherein, the length direction of the image capturing area includes an input side boundary and an output side boundary. The input side boundary is arranged on the conveyor, the output side boundary coincides with the end line of the conveyor, and the distance between the input side boundary and the output side boundary is greater than the article Each item passes through the imaging area and is captured at least once before being output. When the item leaves the imaging area, it also leaves the conveyor.

Wherein, the length direction of the imaging area includes an input side boundary and an output side boundary, the input side boundary is set on the conveyor, the output side boundary is set outside the end line of the conveyor, and the distance between the input side boundary and the end line of the conveyor If it is greater than the maximum length of the item, each item will be captured at least once in the imaging area on the conveyor before being output, and the item will also leave the conveyor when it leaves the imaging area.

Another technical solution of the present invention:

A distribution device of a method for distributing discrete items,

Including the supply bin to store items and continuously supply items to the conveyor;

Conveyor, used to flatten items into a single layer and output,

Image capturing device, used to continuously image the objects passing in the image capturing area of the conveyor;

The central processing and control platform is used to process the images acquired by the imaging device in real time to calculate the quantity of all items passing through the imaging area, and to detect and judge the images of the items. The imaging area is set before the end of the conveyor, horizontally Across the conveying direction of the conveyor, the length and width of the imaging area are set so that each passing item is completely captured at least once;

Container to receive the items output by the conveyor;

The compensation device is used to distribute the difference items to the container so that the contents of the container reach the target quantity.

Wherein, a collector is arranged under the output end of the conveyor to gather the articles output from the conveyor and the articles output from the compensation mechanism to the container.

Among them, the output end of the collector is provided with a gate, and the collected items are temporarily stored on the gate before the container arrives.

Wherein, a gate is provided under the entrance end of the concentrator, and the next pile of first-distributed goods is temporarily stored on the gate before a pile of first-distributed goods output by the conveyor is not received by the container.

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.

Benefits:

(1). In the present invention, the image capturing area is set in the output section of the conveyor, and the article is supported by the conveyor, and the orientation is stable, which is convenient for visual inspection of the shape and size of the article after the image is captured. The image is captured across the conveyor. In the area, imaging and counting can be completed without passing through a detection platform or a counting platform. Compared with a conveyor such as a detection platform or a counting platform, the length is reduced, the structure is simple, and the space is saved.

(2). Since there is no need to take the image when the item is dropped, the imaging area does not occupy the vertical height, and the height of the entire device is also reduced, making the operation more convenient. At the same time, the drop of the items from the conveyor to the container is also reduced, the impact of the items is reduced, and the time for collecting the items to the container is accelerated, and the distribution efficiency is improved.

(3). The moving speed of the item on the conveyor is slow and stable. The length of the imaging area required to capture a complete image of an item can be shorter, compared to if the imaging area is set to the item leaving After the conveyor, due to the acceleration of the object's gravity during the falling period, the object moves faster and faster. It is necessary to capture a complete image of the object for counting or shape detection. The length of the imaging area required will be larger, and the central control system will also need it With larger image information, the overall efficiency is also reduced. The method of the invention can effectively speed up the image processing time, thereby improving the distribution efficiency.

(4). The item has been captured and monitored before leaving the conveyor. When the conveyor is stopped, although the item will continue to move and output due to inertia, the system knows the movement and stop of the item at the exit of the conveyor in real time. , The system can determine the stop output of the item more quickly. In this way, the required interval between the two start-stop cycles will be shorter, and the efficiency of the entire system will increase accordingly.

(5) The items have been monitored before they leave the conveyor, and the number of items that will be output due to inertia after the conveyor is stopped can be evaluated in advance, so that the number of items distributed for the first time can be more accurately controlled to be closer to the target The quantity, thereby reducing the number of needs to make up the difference, greatly accelerates the distribution efficiency.

Description of the drawings

Fig. 1 is a schematic diagram of an image capturing area of a method for distributing a target quantity of discrete objects according to the present invention.

Fig. 2 is a schematic diagram of a second image capturing area of a method for distributing a target quantity of discrete objects according to the present invention.

Fig. 3 is a schematic diagram of a third image capturing area of a method for distributing a target quantity of discrete objects according to the present invention.

Fig. 4 is a schematic diagram of the inertial output area of a method for distributing a target quantity of discrete items according to the present invention.

Figure 5 is a top view of a dispensing device of the present invention.

Fig. 6 is a structural diagram of a distribution device of the present invention with a collector gate.

Fig. 7 is a schematic diagram of the replenishment mechanism of a dispensing device of the present invention when outputting articles.

Fig. 8 is a schematic structural diagram of a distribution device of the present invention using a conveyor with a channel.

Fig. 9 is a schematic diagram of the distribution structure of a distribution device of the present invention.

The reference signs are as follows:

1-conveyor, 101-channel

2——Image capture device, 201-Image capture area

3-items, 4-replenishment agency

5-Collector, 501- Collector first gate, 502- Collector second gate,

6-Container.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.

Example 1

A method for distributing the target quantity of discrete items, as shown in Figure 1 to Figure 7, includes

Continuously take images of an imaging area located at the end of the conveyor. The imaging area is set at the end of the conveyor, across the conveying direction of the conveyor. Each item passes through the imaging area before being output. And be captured at least once, and the item leaves the conveyor when it leaves the capturing area;

Before the number of items to be output reaches the target quantity, stop the conveyor, while continuing to determine the number of items to be output until the items stop output from the conveyor to obtain the first distribution amount;

In the image capturing and counting method of the present invention, when each item passes through the capturing area, its image appears in the captured image, tracking the position of the item in each frame of image continuously obtained, and when the image of the item is being captured When the image disappears, the count increases by one. Assuming that the length of the item is L, the length of the imaging area is W, the imaging frequency is f, and the item speed is V, when the item passes through the imaging area, the condition for at least one image acquisition is:

W>V/f

The condition for the item to be taken at least once is:

W>(V/f)+L

For an item that completely leaves the imaging area, if the distance between the exit end of the imaging area and the exit end of the conveyor is small enough (less than the minimum distance between the center of gravity of the item and the edge of the item), the center of gravity of the item will leave the conveyor On the surface, gravity will cause the item to leave the conveyor automatically, so no matter whether the conveyor is in a driving or stopped state, the number of items that completely leave the imaging area is the same as the number of items output by the conveyor.

Collect the first dispensed items and difference items output from the conveyor to the container on the distribution station. When the container finishes receiving the items, output the container, and continuously supply the container to the distribution station to receive the first output from the conveyor Assign items, and the corresponding difference items.

Through the above method, the target quantity of articles can be continuously distributed to the container, and the continuous operation has a high degree of automation and high production efficiency.

Before the next container arrives at the distribution station, temporarily store the collected items.

Continuous containers will appear during the conveying process. The distribution has been completed, but the container has not yet reached the output position. That is, the distribution time is greater than the time for the container to arrive. At this time, if you need to wait for the container to arrive, it will greatly waste equipment. At this time, you can use the temporary storage function to temporarily store the collected items, that is, when the container has not reached the output position, the device continues to allocate the next target number of items, but temporarily stores them during output. After the container is in place, the distribution is performed, avoiding the time wasted by waiting until the container is in place to perform the distribution. This method can be controlled by an electronic control gate.

When a pile of first distributed items is not received by the container, temporarily store the next pile of first distributed items.

The time for the allocated items to enter the container is affected by the height of the drop and the ejection time of the item falling. When the allocated items have not completely entered the container, continue to allocate the next pile of first allocated items and temporarily store them to avoid waiting for items The time to enter the container improves the overall distribution efficiency.

The present invention can be a further step. The conveyor divides the articles into multiple rows of single-layer articles on the surface of the conveyor, and the articles in each row are rows of single articles, which can easily highlight the articles in the image and improve Accuracy of identification and detection.

Image capturing area: Every item passing through the capturing area will be fully captured at least once.

Each item passing through the imaging area is completely captured at least once; the item image in the image is compared with the preset item image, and the comparison result is judged. When the comparison result is inconsistent, the item is rejected.

The inconsistency of the comparison result is: when any requirements of the shape, color, and size of the image of the object in the image and the preset image of the object are different, it is determined that the comparison result is inconsistent. The article rejection of the present invention can be used to directly reject the unqualified article, or use a rejection channel to reject the article when the conveyor is output, or to reject the entire container into which the article stack to which the article belongs is finally collected. +

The supplemented items will also pass through the imaging area, which can also be detected. The detection method is as follows:

The distributed items are output by the compensation conveyor, and the items output by the compensation conveyor are completely captured through the imaging area and then collected and output to the container together with the first distributed items.

The article image in the image obtained by the image capturing device provided on the compensation conveyor is compared with the preset article image, and the comparison result is judged. When the comparison result is inconsistent, the article is rejected.

The imaging area spans the conveyor and the compensation conveyor, and each item output by the conveyor and the compensation conveyor is taken at least once.

The imaging area of the present invention includes the following methods to realize counting:

The length direction of the imaging area includes 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, and the distance between the output side boundary and the end line of the conveyor is less than the article The distance between the center of gravity and its shortest outer diameter, the distance between the input side boundary and the output side boundary is greater than the maximum length of the item. Each item passes through the imaging area and is captured at least once before being output. When the item leaves the imaging area Also leave the conveyor.

The imaging area is located on the surface of the conveyor, which can fully realize the counting function, and it is convenient to detect pictures and images, and the recognition rate is high.

The imaging area of the present invention can also be designed such that the input side boundary is set on the conveyor, the output side boundary coincides with the end line of the conveyor, and the distance between the input side boundary and the output side boundary is greater than the maximum length of the article, and each article is Before being output, all pass through the image capturing area and be imaged at least once. When the items leave the image capturing area, they also leave the conveyor.

The imaging area of the present invention can also be designed such that the input side boundary is set on the conveyor, the output side boundary is set outside the end line of the conveyor, and the distance between the input side boundary and the output side boundary is greater than the maximum length of the article, each article Before being output, all pass through the imaging area and be taken at least once, and the items leave the conveyor when they leave the imaging area.

The above method can make the setting process of the imaging area easier and reduce the interference during the operation of the machine. The distance between the input side boundary and the conveyor end line of the present invention is greater than the maximum length of the article, so as to distinguish two consecutive passes The image of the object, and allows a complete image of the object to be presented, so that the shape and size of the object can be detected.

The present invention also provides a distribution method using inertial area counting:

An inertial output area is set in front of the output end of the imaging area of the conveyor. The items in the inertial output area will be output after the conveyor is stopped. When the sum of the number of items in the inertial output area and the number of items output is less than the target When quantity, stop the conveyor. The inertial output area refers to the area where the items that continue to be output due to inertia in the imaging area are located every time the conveyor is stopped. The number of items in the inertial output area is recognized and added to the number of items that have been output as a stop The basis of the conveyor, after the conveyor stops, the actual number of items output can be closer to the target number, reducing the number of replenishment.

Stopping the conveyor means essentially stopping the drive of the conveyor. After stopping the drive of the conveyor, there will still be two moments of inertia, one is the inertia of the conveyor itself, and the other is the inertia of the article itself. The article in the inertia output area of this application Contains items that are output affected by the above two inertia quantities.

Example 2

Another technical solution of the present invention:

A distribution device of a method for distributing discrete items,

Conveyor 1, used to flatten articles 3 into a single layer and output,

The image capturing device 2 is used to continuously image the objects passing through the image capturing area 201 of the conveyor 1;

The central processing and control platform is used to process the images obtained by the imaging device 2 in real time to calculate the quantity of all items passing through the imaging area 201, and to detect and judge the images of the items. The imaging area 201 is set on the conveyor 1 Before the end, across the conveying direction of the conveyor 1, the length and width of the image capturing area 201 are set so that each passing item is fully imaged at least once;

The container 6 is used to receive the items output by the conveyor;

The replenishment mechanism 4 is used to distribute the difference items to the container 6 so that the contents of the container 6 reach the target quantity.

According to the present invention, the position of the image capturing area 201 is different, and the detection, counting and distribution can be completed without the need for a traditional counting platform or height difference, with high efficiency and small space.

A collector 5 is arranged under the output end of the conveyor 1 to gather the articles output from the conveyor 1 and the articles output from the compensation mechanism 4 to the container.

The output end of the collector 5 is provided with a collector gate 503, which opens or closes the collector 5 to output the articles 3, and temporarily stores the collected articles on the collector gate before the container arrives. The concentrator gate 503 is connected with the electrical signal of the central processing and control platform. The central processing and control platform controls the opening or closing of the collector gate 503, that is, temporarily storing the distributed items 3 for output, without waiting for the container to arrive, reducing the waiting time and improving the distribution efficiency of the whole machine.

A temporary storage gate 501 and a fixed plate 502 are provided under the entrance end of the collector. The fixed plate 502 is used to fix the gate. Its inclined arrangement can also play a role in collecting items. The temporary storage gate 501 is not received by the container when the distributed items Previously, the next batch of items allocated for the first time on the temporary storage conveyor is in the temporary storage gate 501. The temporary storage gate 401 is connected with the electrical signal of the central processing and control platform. The central processing and control platform controls the register gate 401 to open or close, and switch between output and temporary storage modes.

The conveyor 1 is provided with a driving mechanism, which is connected to the central processing and control platform with electrical signals. The central processing and control platform controls the start and stop time of the conveyor 1. The existing driving form is usually an electromagnetic drive vibrating plate, and the central processing And the control platform controls the motion state of the motor and then controls the start-stop cycle.

A container 6 conveying line is provided for continuously conveying the container 6 to the output end of the collector 5. The outlet of the collection channel is provided with a shunt swing gate to divide the combination of two consecutive released articles 3 into 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 article 3 into a single array of 3 articles. When passing through the image capturing area 201, it can be clearly identified by the image capturing device 2, which improves the recognition efficiency. This is because some special-shaped articles 3 are in the transmission process. , It is easy to stagger to form a piece of article 3. After the image is taken and loaded, the central processing and control platform processes the picture, it is easy to recognize it as an article 3. The channel 101 can effectively separate the direct boundary between article 3 and article 3 Clear, improve the accuracy of recognition.

The cross section of the channel 101 is V-shaped. With the channel 101 of this shape, it is easier to divide the articles into single rows and the conveyor effect is stable.

The above are only preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or changes within the technical scope disclosed by the present invention. All replacements should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

A method for distributing discrete items of target item quantity, which is characterized in that:

Drive the conveyor to move the items to the end of the conveyor in a single-layer state and output;

Continuously take images of the imaging area located at the end of the conveyor. The imaging area crosses the conveying direction of the conveyor. When the items leave the imaging area, they also leave the conveyor. When each item leaves the conveyor, the same Pass the imaging area and be taken at least once;

Process the captured images in real time to determine the number of output items;

Before the number of items to be output reaches the target item number, stop the conveyor, while continuing to determine the number of items to be output until the items stop being output from the conveyor to obtain the first distributed item;

Calculate the number of items that differ between the number of target items and the number of items allocated for the first time, and allocate the items with the difference.
The method for distributing discrete items of the target item quantity according to claim 1, wherein each item passing through the imaging area is completely captured at least once.
A method for distributing discrete items with a compact structure according to claim 2, wherein the item image in the image is compared with the preset item image to determine the comparison result, and when the comparison result is inconsistent, the Items are rejected.
The method for distributing discrete items of the target item quantity according to claim 3, characterized in that: the item image in the image and the preset item image have different requirements in shape, color, and size, it is determined as contrast The results are inconsistent.
The method for distributing discrete items of the target item quantity according to claim 1, characterized in that: the first dispensed items and difference items output from the conveyor are collected to the container on the distributing station, and when the container finishes receiving the items , The output container.
The method for distributing discrete items of target item quantity according to claim 5, characterized in that: the container is continuously supplied to the distribution station to receive the first distribution item quantity output from the conveyor and the corresponding difference item .
The method for distributing the discrete items of the target item quantity according to claim 6, characterized in that: before the next container reaches the distributing station, the collected items are temporarily stored.
The method for distributing the discrete items of the target item quantity according to claim 6, characterized in that: when a pile of first distributing items is not received by the container, temporarily storing the next pile of first distributing items.
The method for distributing discrete items of the target item quantity according to claim 1, characterized in that: the conveyor makes the items on the surface of the conveyor be divided into multiple rows of single-layer items, and each row of items is a single item The list of items that make up.
The method for distributing discrete items of the target item quantity according to claim 1, characterized in that: the distributed items are output by the compensation conveyor, and the items output by the compensation conveyor are completely captured after passing through the imaging area. The first dispensed items are collected and output to the container.
10. A method for distributing discrete items of target item quantity according to claim 10, characterized in that: the item image in the image obtained by the imaging device provided on the compensation conveyor is compared with the preset item image, Judge the comparison result, when the comparison result is inconsistent, remove the item
The method for distributing discrete items of the target item quantity according to claim 10, characterized in that: the imaging area spans the conveyor and the compensation conveyor, and each item output by the conveyor and the compensation conveyor is at least complete Take the image once.
The method for distributing the discrete items of the target item quantity according to claim 1, characterized in that: an inertial output area is provided in front of the output terminal in the image capturing area, and the items in the inertial output area are all distributed after the conveyor is stopped. Will be output. When the sum of the number of items in the inertial output area and the number of items that have been output is less than the number of target items, stop the conveyor.
The method for efficiently distributing discrete items according to claim 1, wherein the length direction of the imaging area includes an input side boundary and an output side boundary, the input side boundary is set on the conveyor, and the output side boundary Set before the conveyor end line, the distance between the output side boundary and the conveyor end line is less than the shortest distance between the center of gravity of the article and its edge, and the distance between the input side boundary and the output side boundary is greater than the maximum length of the article, and each article is before being output , All pass through the image capturing area and be imaged at least once, and the items leave the conveyor when they leave the image capturing area.
The method for efficiently distributing discrete items according to claim 1, wherein the length direction of the imaging area includes an input side boundary and an output side boundary, the input side boundary is set on the conveyor, and the output side boundary It coincides with the end of the conveyor, and the distance between the input side boundary and the output side boundary is greater than the maximum length of the article. Each article passes through the imaging area and is imaged at least once before being output. The article also leaves when it leaves the imaging area. Conveyor.
The method for efficiently distributing discrete items according to claim 1, wherein the length direction of the imaging area includes an input side boundary and an output side boundary, the input side boundary is set on the conveyor, and the output side boundary Set on the outside of the conveyor end line, the distance between the input side boundary and the conveyor end line is greater than the maximum length of the article, each article is taken at least once when it is in the imaging area on the conveyor before being output, and the article leaves Also leave the conveyor when capturing the image area.
A distributing device using the method for distributing discrete items of a target item quantity according to any one of claims 1 to 16, characterized in that:

Including the supply bin to store items and continuously supply items to the conveyor;

Conveyor, used to flatten items into a single layer and output,

Image capturing device, used to continuously image the objects passing in the image capturing area of the conveyor;

The image capturing area is set at the end of the conveyor and across the conveying direction of the conveyor. The length and width of the image capturing area are set so that each passing item is fully imaged at least once;

The central processing and control platform is used to process the images acquired by the imaging device in real time to calculate the quantity of all items passing through the imaging area, and to detect and judge the images of the items,

Container to receive the items output by the conveyor;

The compensation device is used to distribute the difference items to the container so that the items in the container reach the target item quantity.
The device for distributing the discrete items of the target item quantity according to claim 17, wherein a collector is arranged under the output end of the conveyor to collect the items output from the conveyor and the items output from the compensation mechanism to container.
The device for distributing the discrete items of the target item quantity according to claim 17, characterized in that: the output end of the collector is provided with a collector gate, which opens or closes the output of the collector, and temporarily stores the collection before the container arrives. The items on the collector gate; the collector gate is connected to the central processing and control platform with electrical signals, and the central processing and control platform controls the opening or closing of the collector gate.
The device for distributing the discrete items of the target item quantity according to claim 17, characterized in that: a temporary storage gate and a fixed plate are provided under the entrance end of the collector, and the fixed plate is used to fix the gate, and the temporary storage gate is in the allocated Before the items are received by the container, the next batch of the temporary storage conveyor distributes the first items in the temporary storage gate; the temporary storage gate is connected with the electrical signal of the central processing and control platform, and the central processing and control platform controls the opening or closing of the temporary storage gate. Switch between output and temporary storage mode.
The device for distributing the discrete items of the 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;
21. The device for distributing the discrete items of the target item quantity according to claim 21, wherein the cross section of the channel is V-shaped.
The device for distributing the discrete items of the target item quantity according to claim 17, wherein the imaging area spans the conveyor and the compensation conveyor, and each item output by the conveyor and the compensation conveyor is at least completely captured once.
The device for distributing the discrete items of the target item quantity according to claim 17, wherein the image capturing area spans the conveyor and the compensation conveyor respectively, and each item output by the conveyor and the compensation conveyor is taken at least completely Like once.