A system and method for adjusting the intervals of continuously conveyed articles

Abstract

The present invention discloses a system and method for adjusting the interval of continuously conveyed articles, including: two continuously connected conveying devices with a speed difference; triggering devices respectively arranged on the conveying devices, each triggering device being used to record cumulative triggering statistical information when triggered, wherein the interval between the two triggering devices is configured as a set distance; an operation control device, which is used to actively adjust the actual interval according to the cumulative triggering statistical information and working status of each triggering device when it is diagnosed that the actual interval between adjacent conveyed articles does not reach the set distance, so that the adjacent conveyed articles are conveyed at the set interval. The present invention can reduce the degree of manual operation intervention of on-site staff in the adjustment action of the interval of continuously conveyed articles.

Description

Technical Field

[0001] The present invention relates to the technical field of article transfer detection, and in particular to a system and method for adjusting the interval between continuously conveyed articles. Background Art

[0002] The article transfer mechanism is mainly used to transfer articles that need to be continuously conveyed.

[0003] Although the article transfer mechanism brings a lot of convenience to our lives, in the scenario of continuously conveying articles, it is difficult to achieve the problem of automatic equal-interval transfer of articles. For example, in order to improve the working efficiency and the accuracy of the working results of the security inspection instrument or the sorting system, it is necessary to provide the articles to be detected with equal-interval transfer at the input end of the security inspection instrument or the sorting system. However, in the actual application process, due to the lack of an effective mechanism for identifying and actively adjusting the actual interval between adjacent articles during the equal-interval transfer, in the process of continuous article transfer, in order to achieve an approximately equal-interval effect, on-site staff intervention is required, which increases the working hours of the staff and affects the working efficiency of the staff.

[0004] Therefore, the prior art needs to provide an intelligent control solution that can actively adjust the actual interval of continuously conveyed articles, so as to achieve the purpose of equal-interval transfer of continuous articles, reduce the participation of human factors, and indirectly improve the working accuracy of the backend mechanism. Summary of the Invention

[0005] The purpose of the present invention is to provide an intelligent control solution that can actively adjust the actual interval of continuously conveyed articles, so as to achieve the purpose of equal-interval transfer of continuous articles, reduce the participation of human factors, and indirectly improve the working accuracy of the backend mechanism.

[0006] To solve the above technical problems, an embodiment of the present invention provides a system for adjusting the interval between continuously conveyed articles, including: two continuously connected conveying devices with a speed difference; triggering devices respectively arranged on the conveying devices, each triggering device being used to record cumulative triggering statistical information when triggered, wherein the interval between the two triggering devices is configured as a set distance; an operation control device, which is used to, according to the cumulative triggering statistical information and the working state of each triggering device, when it is diagnosed that the actual interval between adjacent conveyed articles does not reach the set distance, actively adjust the actual interval so that the adjacent conveyed articles are conveyed at the set interval.

[0007] Preferably, the operation control device is configured to perform timing interval adjustment according to the following step process: Based on the trigger statistical information and working states of the two trigger devices, determine whether there is a first target item located between the two trigger devices in front of the item that triggers the first trigger device when the first trigger device is triggered, and determine whether there is a second target item located between the two trigger devices behind the item that releases the second trigger device when the second trigger device is released; In the case where a first target item or a second target item is detected, adjust the actual interval between adjacent conveyed items by controlling the stop and start of the conveyor device located upstream, so that the adjusted interval reaches the set distance.

[0008] Preferably, in the step of determining whether there is the first target item or the second target item, it includes: Based on the working state of each trigger device, combined with the difference between the cumulative trigger statistical information of the two trigger devices, determine whether there is the first target item or the second target item, where the working state includes a triggered state, an untriggered state, and a released state.

[0009] Preferably, the first conveyor device is located upstream of the second conveyor device, where the conveying speed of the first conveyor device is less than the conveying speed of the second conveyor device, and the first trigger device is provided at the end of the first conveyor device.

[0010] Preferably, in the case where it is detected that both the first trigger device and the second trigger device are in the triggered state, or, in the case where the first trigger device is in the triggered state and the difference between the second trigger statistical information recorded by the second trigger device and the first trigger statistical information recorded by the first trigger device does not satisfy that the actual conveying interval is the set distance, determine that there is the first target item currently; Send a stop instruction to the first conveyor device; When it is detected that the second trigger device is in the released state and the difference between the second trigger statistical information recorded by the second trigger device and the first trigger statistical information recorded by the first trigger device satisfies that the actual conveying interval is the set distance, send a running instruction to the first conveyor device.

[0011] Preferably, in the case where it is detected that the second trigger device is in the released state and the first trigger device is in the triggered state, determine that there is the second target item currently; Send a stop instruction to the first conveyor device; When the stop time of the first conveyor device reaches the preset time value, send a running instruction to the first conveyor device, where the preset time value is the ratio of the set distance to the conveying speed of the second conveyor device.

[0012] Preferably, when it is detected that the first triggering device is in a triggered state, the second triggering device is in an untriggered state, and the difference between the second triggering statistical information recorded by the second triggering device and the first triggering statistical information recorded by the first triggering device satisfies that the actual conveying interval is the set distance, it is determined that the first target item does not exist currently.

[0013] Preferably, when it is detected that the first triggering device is in an untriggered state and the second triggering device is in a released state, it is determined that the second target item does not exist currently.

[0014] Preferably, the cumulative triggering statistical information is selected from one of the triggering times, triggering times, and other reasonable parameter items. Each triggering device includes a sensing element and a counter, wherein the sensing element is selected from one of a position sensor, a gravity sensor, and a photoelectric sensor.

[0015] On the other hand, an embodiment of the present invention provides a method for adjusting the interval of continuously conveyed items. The method is implemented by using the system as described above. The method includes: respectively setting corresponding triggering devices on two continuously connected conveying devices with a speed difference, where each triggering device is used to record cumulative triggering statistical information when triggered, and the interval structure of the two triggering devices is set as a set distance; according to the cumulative triggering statistical information and working states of the two triggering devices, when it is diagnosed that the actual interval between adjacent conveyed items does not reach the set distance, actively adjust the actual interval so that the adjacent conveyed items are conveyed at the set interval.

[0016] Compared with the prior art, one or more embodiments of the above solutions may have the following advantages or beneficial effects:

[0017] The present invention proposes a system and method for adjusting the interval of continuously conveyed items. The system and method respectively set corresponding triggering devices on two continuously connected conveying devices with a speed difference to record the arrival of adjacent items, and use a pre-constructed linkage response mechanism for diagnosing adjacent conveyed items and adjusting the interval to achieve the purpose of continuously conveying items at equal intervals. The present invention can reduce the degree of manual operation intervention of on-site staff in adjusting the interval of continuously conveyed items, and improve the working accuracy and working efficiency of the backend system.

[0018] Other features and advantages of the present invention will be described in the subsequent specification, and part of them will become obvious from the specification, or will be understood by implementing the present invention. The objectives and other advantages of the present invention can be realized and obtained through the structures specifically pointed out in the specification, claims, and drawings. Description of the Drawings

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0020] Figure 1 It is a schematic diagram of the overall structure of the system for adjusting the intervals between continuously conveyed articles according to an embodiment of the present application.

[0021] Figure 2 It is a schematic diagram of the diagnostic process in the system for adjusting the intervals between continuously conveyed articles according to an embodiment of the present application.

[0022] Figure 3 It is a schematic diagram of the steps of the method for adjusting the intervals between continuously conveyed articles according to an embodiment of the present application. Detailed implementation manners

[0023] The following will describe in detail the implementation manners of the present invention in combination with the accompanying drawings and embodiments, so as to fully understand how the present invention uses technical means to solve technical problems and achieve the implementation process of technical effects and implement accordingly. It should be noted that as long as there is no conflict, the various embodiments in the present invention and the various features in each embodiment can be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.

[0024] In addition, the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. And although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order than here.

[0025] The terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments. Unless the context clearly indicates otherwise, the singular forms "a" and "an" used herein are also intended to include the plural. It should also be understood that the terms "including" and / or "comprising" used herein specify the presence of the stated features, integers, steps, operations, units, and / or components, and do not exclude the presence or addition of one or more other features, integers, steps, operations, units, components, and / or their combinations.

[0026] To solve the technical problems in the above background art, an embodiment of the present application proposes a system and method for adjusting the intervals between continuously conveyed articles. The system and method record the arrival of adjacent articles by respectively setting corresponding triggering devices on two continuously connected conveying devices with a speed difference, and use the pre-constructed linkage response mechanism for diagnosing adjacent conveyed articles and adjusting intervals to achieve the purpose of transmitting continuously conveyed articles at equal intervals.

[0027] Figure 1This is a schematic diagram of the overall structure of the system for adjusting the intervals between continuously conveyed articles according to an embodiment of the present application. As Figure 1 shown, the system for adjusting the intervals between continuously conveyed articles (also referred to as the "equal-interval conveying adjustment system") provided by the embodiments of the present invention mainly includes: two continuously connected conveying devices, two triggering devices, and an operation control device.

[0028] The two conveying devices are two continuously connected conveying devices with a speed difference. The adjacent two conveying devices are continuously connected, and the conveying speeds of the adjacent two conveying devices are different. In the embodiments of the present invention, the conveying device located upstream can be denoted as the first conveying device, and the second conveying device is located downstream of the first conveying device.

[0029] The triggering devices are respectively arranged on each conveying device. Each triggering device is used to record its own cumulative (being) triggered statistical information when triggered. In a preferred embodiment, the triggering statistical information can be selected from one of the triggering times, triggering time, and other reasonable parameter items. Among them, the interval between two adjacent triggering devices is configured as a set distance. The installation interval between the first triggering device on the first conveying device and the second triggering device on the second conveying device is configured as a set distance. Among them, the cumulative statistical information of the first triggering device recording its own being triggered is denoted as the first triggering statistical information; the cumulative statistical information of the second triggering device recording its own being triggered is denoted as the second triggering statistical information.

[0030] In addition, during the actual application process, the triggering device will output corresponding working states according to the actual situation of the article passing through itself. In the embodiments of the present invention, the working states of the triggering device include a triggered state, an untriggered state, and a released state. The triggered state is a state in which during the process that the front edge of a certain article reaches and passes through the position of the triggering device, the sensing element of the triggering device is triggered, thereby generating a manifestation form such as changing from a low-potential electrical signal (or 0 signal) to a high-potential electrical signal (or 1 signal) and maintaining the high-potential electrical signal (or 1 signal). The untriggered state is a state in which no article passes through the position of the triggering device, so that the sensing element of the triggering device is not triggered, thereby generating a manifestation form such as a low-potential electrical signal (or 0 signal) and maintaining the low-potential electrical signal (or 0 signal). The released state is a state in which the trailing edge of a certain article passes through the position of the triggering device, so that the triggered state of the sensing element of the triggering device is instantly released, thereby generating a manifestation form such as changing from a high-potential electrical signal (or 1 signal) to a low-potential electrical signal (or 0 signal).

[0031] Further, the operation control device is connected to each triggering device. The operation control device is configured to, according to the (cumulative) triggering statistical information and working status of each triggering device, when it is diagnosed that the actual interval between adjacent conveyed items does not reach the set distance, actively adjust the actual interval so that the adjacent conveyed items are conveyed at equal intervals according to the set interval. In an embodiment of the present invention, the operation control device is implemented by using one of devices such as a computer, a processor, a programmable logic device, a PLC controller, etc.

[0032] A series of continuously conveyed items enter through the first conveying device, and after passing through the first conveying device and the second conveying device, are sent to a subsequent system (for example: an X-ray security scanner or a sorting system, etc.). The first conveying device and the second conveying device separate the continuous items. The present invention can make the distance between adjacent items maintain the set distance d. Among them, the first conveying device has a set operating speed v1, and the second conveying device has a set speed v2.

[0033] More specifically, the first triggering device is arranged at the end of the first conveying device, and the second triggering device is arranged at a position d away from the first triggering device and is located on the second conveying device. When the continuous items pass through the first and second conveying devices, due to their speed difference, a certain gap will be separated. The first and second triggering devices detect this gap and conditionally control the first conveying device to stop running so that the gap reaches the set interval.

[0034] It should be noted that the equal-spacing adjustment system described in the embodiments of the present invention can perform equal-spacing conveying control on at least two consecutive conveying devices with a speed difference. Further, as long as the equal-spacing adjustment system described in the embodiments of the present invention realizes the equal-spacing conveying control of any two adjacent conveying devices among at least two consecutive conveying devices, it can perform the regulation of conveying items at equal intervals on at least two consecutive conveying devices.

[0035] In one embodiment, during the process of conveying a plurality of continuous items, the operation control device is configured to perform timing interval adjustment according to the following step process:

[0036] Step S1, according to the (cumulative) triggering statistical information and working status of the two triggering devices, determine whether there is a first target item located between the two triggering devices in front of the item that triggers the first triggering device when the first triggering device is triggered, and determine whether there is a second target item located between the two triggering devices behind the item that releases the second triggering device when the second triggering device is released;

[0037] Step S2, when it is detected that there is a first target item or a second target item, the actual interval between two adjacent conveyed items is adjusted by controlling the stop and start actions of the upstream conveying device, so that the adjusted interval reaches the set distance.

[0038] Further, in step S1, the operation control device determines whether there is a first target item in front of the triggered triggering device or whether there is a second target item behind the released triggering device when one of the at least two triggering devices is triggered, based on the working state of each triggering device and the difference between the cumulative triggering statistical information of the two triggering devices.

[0039] In one embodiment, the first conveying device is located upstream of the second conveying device. Among them, the conveying speed of the first conveying device is less than that of the second conveying device, that is, v1 < v2.

[0040] In one embodiment, each triggering device includes a sensing element and a counter. Among them, the sensing element is selected from one of a position sensor, a gravity sensor, a photoelectric sensor, and other reasonable sensors for sensing the arrival of an item.

[0041] As Figure 2 shown, in step S1, if the operation control device detects that the current first triggering device is in a triggered state, the second triggering device is in an untriggered state, and the difference between the second triggering statistical information recorded by the current second triggering device and the first triggering statistical information recorded by the first triggering device does not satisfy that the actual interval conveying length between the currently triggered item and the item in front of it is the set distance, it is determined that there is no first target item at present, indicating that there is no item between the two triggering devices in front of (i.e., downstream of) the item that currently triggers the first triggering device, that is, all items before the current item have passed through the second triggering device. At this time, the item that currently triggers the first triggering device can be conveyed forward.

[0042] Reference Figure 2, in step S1, if the operation control device detects that both the current first trigger device and the second trigger device are in the triggered state, or if the operation control device detects that the current first trigger device is in the triggered state and the difference between the second trigger statistics recorded by the current second trigger device and the first trigger statistics recorded by the first trigger device does not meet the condition that the actual interval conveying length between the currently triggered item and the item in front of it is the set distance, then it is determined that there is a first target item currently. At this time, in step S2, the operation control device will first send a stop instruction to the first conveyor, and the second conveyor continues to operate. When the operation control device detects that the second trigger device is in the released state and the difference between the second trigger statistics recorded by the second trigger device and the first trigger statistics recorded by the first trigger device meets the condition that the actual conveying interval is the set distance, the operation control device sends a running instruction to the first conveyor, indicating that the gap between these two adjacent items has reached the set distance d. At this time, the operation control device sends a running instruction to the first conveyor to continue conveying the item forward.

[0043] In step S1, if the operation control device detects that the current first trigger device is in the untriggered state and the second trigger device is in the released state, then it is determined that there is no second target item currently. When the second trigger device is released, it means that the end of an item just passes through the position of the second trigger device. If the first trigger device is in the untriggered state at this time, it means that there is no item between the two trigger devices behind (i.e., upstream) of the item that currently triggers the second trigger device, that is, all the items after the current item have not passed through the first trigger device. At this time, the item that currently triggers the second trigger device can be conveyed forward continuously.

[0044] Continue to refer to Figure 2, in step S1, if the operation control device detects that the current second trigger device is in the released state and the first trigger device is in the triggered state, it is determined that there is a first target item currently. At this time, in step S2, the operation control device first sends a stop instruction to the first conveyor device, and the second conveyor device continues to operate. When the operation control device detects that the stop time of the first conveyor device reaches the preset time value, the operation control device sends a running instruction to the first conveyor device. Among them, the above preset time value is the ratio of the set distance d to the conveying speed v2 of the second conveyor device. When the second trigger device is released, it means that the end of an item just passes through the position of the second trigger device. If the first trigger device is in the triggered state at this time, it means that there is an item between the two trigger devices behind (i.e., upstream) of the item currently passing through the second trigger device, and the distance between these two items does not reach the set distance d. At this time, the operation control device sends a stop instruction to the first conveyor device to stop its operation; after d / v2 time, the operation control device sends a running instruction to the first conveyor device, which will cause the item that triggered the first trigger device to continue to be conveyed forward.

[0045] In the actual application process, the cumulative trigger count information can be used as the above cumulative trigger statistical information.

[0046] When an item reaches the first trigger device and triggers the first trigger device, the counter in the first trigger device records the trigger count of the first trigger device as s1 = s1 + 1, and then transmits the updated first trigger count parameter to the operation control device. When an item reaches the second trigger device and triggers the second trigger device, the counter in the second trigger device records the trigger count of the second trigger device as s2 = s2 + 1, and then transmits the updated second trigger count parameter to the operation control device.

[0047] In the first embodiment, in step S1, if the operation control device detects that the current first trigger device is in the triggered state, the second trigger device is in the non-triggered state, and the difference between the second trigger count recorded by the current second trigger device and the first trigger count recorded by the first trigger device is 1, it is determined that there is no first target item currently. When the first trigger device is triggered, it means that the front end of an item just reaches the position of the first trigger device. If the second trigger device is in the non-triggered state at this time and s1 = s2 - 1, it means that there is no item between the two trigger devices in front (i.e., downstream) of the item currently triggering the first trigger device, that is, all items before the current item have passed through the second trigger device. At this time, the item currently triggering the first trigger device can be conveyed forward.

[0048] In the second embodiment, refer to Figure 2, in step S1, if the operation control device detects that both the current first trigger device and the second trigger device are in the triggered state, or if the operation control device detects that the current first trigger device is in the triggered state and the difference between the second trigger count recorded by the current second trigger device and the first trigger count recorded by the first trigger device is not 1, then it is determined that there is a first target item currently. At this time, in step S2, the operation control device first sends a stop instruction to the first conveyor, and the second conveyor continues to operate. When the operation control device detects that the second trigger device is in the released state and the difference between the second trigger count recorded by the second trigger device and the first trigger count recorded by the first trigger device is 1, the operation control device sends a running instruction to the first conveyor. When the first trigger device is triggered, if the second trigger device is in the triggered state at this time, or s1≠s2 - 1, it means that there is an item between the two trigger devices in front of (i.e., downstream of) the item that currently triggers the first trigger device, and the distance between these two adjacent items has not reached the set distance d. At this time, the operation control device sends a stop instruction to the first conveyor to make it stop operating; the second conveyor continues to operate until the operation control device detects that the second trigger device is in the released state and s1 = s2 - 1. At this time, it means that the gap between these two adjacent items has reached the set distance d. At this time, the operation control device sends a running instruction to the first conveyor to continue conveying the item forward.

[0049] In the third embodiment, in step S1, if the operation control device detects that the current first trigger device is in the non-triggered state and the second trigger device is in the released state, then it is determined that there is no second target item currently. When the second trigger device is released, it means that the end of an item just passes through the position of the second trigger device. If the first trigger device is in the non-triggered state at this time, it means that there is no item between the two trigger devices behind (i.e., upstream of) the item that currently triggers the second trigger device, that is, all items after the current item have not passed through the first trigger device. At this time, the item that currently triggers the second trigger device can be conveyed forward.

[0050] In the fourth embodiment, continue to refer to Figure 2, in step S1, if the operation control device detects that the current second trigger device is in the released state and the first trigger device is in the triggered state, it is determined that there is a first target item at present. At this time, in step S2, the operation control device first sends a stop instruction to the first conveyor device, and the second conveyor device continues to operate. When the operation control device detects that the stop time of the first conveyor device reaches the preset time value, the operation control device sends a running instruction to the first conveyor device. Among them, the above preset time value is the ratio of the set distance d to the conveying speed v2 of the second conveyor device. When the second trigger device is released, it means that the end of an item just passes through the position of the second trigger device. If the first trigger device is in the triggered state at this time, it means that there is an item between the two trigger devices behind (i.e., upstream) of the item passing through the second trigger device at present, and the distance between these two items does not reach the set distance d. At this time, the operation control device sends a stop instruction to the first conveyor device to make it stop operating; after d / v2 time, the operation control device sends a running instruction to the first conveyor device, which will make the item triggering the first trigger device continue to be conveyed forward.

[0051] On the other hand, based on the above equal-spacing conveying adjustment system, an embodiment of the present invention further provides a method for adjusting the interval of continuously conveyed items (also referred to as "equal-spacing conveying adjustment method"). This equal-spacing conveying adjustment method is implemented by using the equal-spacing conveying adjustment system as described above.

[0052] Figure 3 It is a schematic diagram of the steps of the method for adjusting the interval of continuously conveyed items according to an embodiment of the present application. As Figure 3 shown, the equal-spacing conveying adjustment method described in the embodiment of the present invention includes the following step process:

[0053] Step S301, respectively set corresponding trigger devices on two continuously connected conveyor devices with a speed difference, where each trigger device is used to record cumulative trigger statistical information when triggered, and the interval between the two trigger devices is configured as the set distance;

[0054] Step S302, according to the cumulative trigger statistical information and working status of the two trigger devices, when it is diagnosed that the actual interval between adjacent conveyed items does not reach the set distance, actively adjust the actual interval so that the adjacent conveyed items are conveyed according to the set interval.

[0055] The present invention discloses a system and method for adjusting the intervals of continuously conveyed articles. By respectively arranging corresponding triggering devices on two successively connected conveying devices with a speed difference to record the arrival of adjacent articles, and utilizing a pre-constructed linkage response mechanism for diagnosing adjacent conveyed articles and adjusting intervals, the purpose of equidistant transmission of continuous articles is achieved. The present invention can reduce the degree of manual operation intervention of on-site staff in adjusting the intervals of continuously conveyed articles, and improve the working accuracy and working efficiency of the backend system.

[0056] As described above, only the specific preferred embodiments of the present invention are provided, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by 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.

[0057] In the description of the present invention, unless otherwise specified, "a plurality of" means two or more; the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0058] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] It should be understood that the embodiments disclosed by the present invention are not limited to the specific structures, processing steps or materials disclosed herein, but should extend to equivalent alternatives of these features understood by those of ordinary skill in the relevant art. It should also be understood that the terms used herein are only for the purpose of describing specific embodiments and do not mean to limit.

[0060] The "one embodiment" or "embodiment" mentioned in the specification means that the specific features, structures or characteristics described in connection with the embodiment are included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment" or "embodiment" that appear throughout the specification do not necessarily all refer to the same embodiment.

[0061] Although the embodiments disclosed in the present invention are as above, the content described is only an embodiment adopted for the convenience of understanding the present invention and is not intended to limit the present invention. Any person skilled in the art within the technical field to which the present invention pertains may make any modifications and changes in the form of implementation and details without departing from the spirit and scope disclosed by the present invention. However, the scope of patent protection of the present invention shall still be subject to the scope defined by the appended claims.

Claims

1. A system for adjusting the intervals of continuously conveyed articles, characterized in that, Comprising: A conveying device formed by two continuously connected sections with a speed difference; Trigger devices respectively arranged on the conveying device, each trigger device being used to record cumulative trigger statistical information when triggered, wherein the interval between the two trigger devices is configured as a set distance; An operation control device, which is used to judge whether there is a first target item located between the two trigger devices in front of the item that triggers the first trigger device when the first trigger device is triggered, and to judge whether there is a second target item located between the two trigger devices behind the item that releases the second trigger device when the second trigger device is released, and then, when it is detected that there is a first target item or a second target item, adjust the actual interval between adjacent conveyed items by controlling the stop and start of the conveying device located upstream so that the adjusted interval reaches the set distance, wherein, In the step of judging whether there is the first target item or the second target item, it includes: Determine whether there is the first target item or the second target item according to the working state of each trigger device and in combination with the difference between the cumulative trigger statistical information of the two trigger devices, wherein the working state includes a triggered state, an untriggered state and a released state.

2. The system according to claim 1, wherein The first conveying device is located upstream of the second conveying device, wherein the conveying speed of the first conveying device is less than the conveying speed of the second conveying device, and the first trigger device is arranged at the end of the first conveying device.

3. The system according to claim 2, wherein When it is detected that both the first trigger device and the second trigger device are in the triggered state, or, when the first trigger device is in the triggered state and the difference between the second trigger statistical information recorded by the second trigger device and the first trigger statistical information recorded by the first trigger device does not satisfy that the actual conveying interval is the set distance, it is determined that there is the first target item currently; Send a stop instruction to the first conveying device; When it is detected that the second trigger device is in the released state and the difference between the second trigger statistical information recorded by the second trigger device and the first trigger statistical information recorded by the first trigger device satisfies that the actual conveying interval is the set distance, send a running instruction to the first conveying device.

4. The system according to claim 2 or 3, wherein When it is detected that the second trigger device is in the released state and the first trigger device is in the triggered state, it is determined that there is the second target item currently; Send a stop instruction to the first conveying device; When the stop time of the first conveying device reaches a preset time value, send a running instruction to the first conveying device, wherein the preset time value is the ratio of the set distance to the conveying speed of the second conveying device.

5. The system according to claim 2 or 3, wherein When it is detected that the first triggering device is in a triggered state, the second triggering device is in an untriggered state, and the difference between the second triggering statistical information recorded by the second triggering device and the first triggering statistical information recorded by the first triggering device satisfies that the actual conveying interval is the set distance, it is determined that the first target item does not exist currently.

6. The system according to claim 2 or 3, wherein When it is detected that the first triggering device is in an untriggered state and the second triggering device is in a released state, it is determined that the second target item does not exist currently.

7. The system according to any one of claims 1 to 3, characterized in that The cumulative triggering statistical information is selected from one of the triggering times, triggering times, and other reasonable parameter items. Each triggering device includes a sensing element and a counter, wherein the sensing element is selected from one of a position sensor, a gravity sensor, and a photoelectric sensor.

8. A method for adjusting the intervals of continuously conveyed articles, characterized in that, The method is implemented by using the system according to any one of claims 1 to 7, wherein the method includes: Corresponding triggering devices are respectively arranged on two continuously connected conveying devices with a speed difference, wherein each triggering device is used to record cumulative triggering statistical information when triggered, and the interval structure between the two triggering devices is set to a set distance; According to the cumulative triggering statistical information and working states of the two triggering devices, when it is diagnosed that the actual interval between adjacent conveyed items does not reach the set distance, the actual interval is actively adjusted so that the adjacent conveyed items are conveyed at the set interval.

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