KR102389779B1 - Debris removal system - Google Patents

Abstract

The present invention relates to a debris removal system. According to the present invention, the debris removal system is able to prevent the incorrect detection by an area sensor which generates freight detection information by emitting and receiving light with a gap formed on a conveyor in the middle, comprising: a spray module spraying compressed air toward the gap; and a control panel including a spray control unit driving and controlling the spray module. According to the present invention, the debris removal system is able to have a spray module spraying compressed air toward a gap formed on a conveyor, remove debris stuck in the gap, prevent the incorrect detection due to the debris by an area sensor generating freight detection information by emitting and receiving light with the gap in the middle, and improve freight detection accuracy.

Description

Foreign matter removal system {Debris removal system}

The present invention relates to a foreign material removal system, and more particularly, by providing a spray module that sprays compressed air toward a gap formed on a conveyor to remove foreign substances caught in the gap, emitting and receiving light through the gap It relates to a foreign material removal system capable of preventing abnormal detection by foreign substances in an area sensor generating detection information and improving detection accuracy.

The term logistics is an abbreviation for physical distribution, and is a generic term for functions or activities that effectively move products and goods from producers to consumers. Generally refers to several activities such as packing, unloading, transport, storage and information.

In general, to transport products and goods, various processes such as packaging, storage, collection/loading, transportation, unloading/delivery, and storage are performed. It is impossible to move goods and goods without going through this process no matter which means of transport is used. Comprehensively looking at the whole of this movement is physical distribution (logistics).

In recent years, mass production, mass sales, and mass consumption have become the trend of the times, and the importance of logistics is gradually increasing because the need to streamline the flow of goods between them has increased.

Logistics warehouse refers to a storage warehouse for temporarily or long-term loading and storage of all items used in daily life, such as various foodstuffs, beverages, clothing, home appliances, miscellaneous goods, and industrial goods, which are generally mass-produced in factories or production areas. Due to the recent rapid development of the logistics industry, these warehouses are designed and constructed so that they can create new businesses such as inventory management, as well as efficient entry and exit from the storage of goods in the warehouse, beyond the management of simple logistics. .

These warehouses are equipped with mechanized or automated means for loading and unloading cargo, because the rapid warehousing and delivery of cargo is vital. Typically, automated facilities such as stacker cranes, shuttles, and lifts are used. In addition, a sorter system capable of automatically sorting various cargoes according to a specific classification standard set by a user is being used.

In general, the cross belt sorter system consists of a cross belt sorter in which a plurality of carriers move along a loop-shaped track, a plurality of inductions formed to load cargo on the carrier, and a plurality of chutes in which each cargo is sorted and discharged. It is configured, and when cargo is loaded on a carrier from a plurality of induction, cargo sorting is made by sorting and discharging the loaded cargo to each shooter.

Here, the size of the cargo transferred through induction is measured through an area sensor and the cargo loaded by the cross belt sorter is synchronized with the cross belt sorter carrier so that the cargo is stably loaded onto the carrier.

Referring to FIG. 1 , the area sensor includes a light emitting unit s1 that emits light and a light receiving unit s2 that receives light, and the light emitting unit so that the cargo transport path of the conveyor c passes between the light emitting unit s1 and the light receiving unit s2 (s1) and the light receiving part (s2) are arranged. And when the cargo f passes between the light emitting part s1 and the light receiving part s2, the area sensor generates cargo detection information including volume and time information that blocks the light in the process of passing, and adds to the generated cargo detection information. Based on this, a separate control unit may generate volume information of the cargo f that has passed through the light emitting unit s1 and the light receiving unit s2.

Looking at the typical installation method of such an area sensor, as shown in FIG. 1, the conveyor forms a path in which a plurality of conveyor belts are connected to each other. The light emitting part s1 and the light receiving part s2 are provided under the gap so that the light emitting part s1 and the light receiving part s2 emit and receive light with the gap interposed therebetween.

However, as shown in FIG. 2 , there may be a case in which a foreign material d is caught in a gap between the conveyor belts in the process of transporting the cargo. As such, a problem that the light receiving unit s2 cannot receive some light due to the foreign material d caught between the gaps occurs, so that a predetermined object (cargo) may be misjudged as existing or inaccurate cargo volume information may be generated. this exists

Republic of Korea Patent Registration No. 10-1630117

The present invention is to solve the problems of the prior art mentioned above, and an object of the present invention is to provide a spray module that sprays compressed air toward the gap formed on the conveyor to remove foreign substances caught in the gap. An object of the present invention is to provide a foreign material removal system that prevents abnormal detection by foreign materials of an area sensor that emits and receives light with a gap therebetween to generate cargo detection information.

Another object of the present invention is to ensure that the nozzle through which the compressed air is sprayed is disposed on the vertical frame of the support or at both ends of the gap so that it does not interfere with the cargo detection of the area sensor and at the same time can efficiently remove foreign substances caught in the gap. It is to provide a foreign material removal system.

Another object of the present invention is to spray compressed air when the conveyor is stopped so that when the conveyor is stopped due to a foreign material caught in the gap, the foreign material can be removed immediately, and when abnormality of the cargo occurs By judging this, it is to provide a foreign material removal system that automatically sprays compressed air to automatically remove the foreign material that is the cause immediately when a cargo abnormality is detected due to foreign material.

A foreign material removal system according to an embodiment of the present invention is a foreign material removal system for preventing abnormal detection by foreign substances of an area sensor that generates cargo detection information by emitting and receiving light with a gap formed on a conveyor therebetween. , and a control panel including a spray module for spraying compressed air toward the gap, and a spray control unit for driving and controlling the spray module.

At this time, the control panel further includes a timer unit for determining an elapsed time from the time of final injection of the compressed air, and the injection control unit drives and controls the injection module to inject the compressed air when a predetermined time elapses from the time when the compressed air is finally injected. can do.

In addition, the control panel further includes a driving determination unit for determining whether the conveyor is driven,

The injection control unit may drive and control the injection module to inject compressed air when the conveyor driving is started or the conveyor driving is stopped.

In addition, the control panel further includes an abnormality detection determination unit for determining whether an abnormality detection of the area sensor occurs, and the injection control unit can drive and control the injection module to inject compressed air when it is determined that an abnormality detection has occurred in the abnormality detection determination unit. .

In addition, the abnormal detection determination unit may determine that the abnormal detection has occurred when the area sensor continuously detects an object for a predetermined time or more.

Also, the abnormality detection determining unit may determine that abnormality detection has occurred when the volume of the object detected by the area sensor increases and then decreases by more than a predetermined volume.

In addition, the foreign material removal system further includes a support having a vertical frame disposed in the vertical direction on both sides near the gap of the conveyor, and a horizontal frame that connects the upper end of the vertical frame and the light emitting part or light receiving part of the area sensor is disposed downward toward the gap. Including, the injection module may be provided with a first injection nozzle for injecting compressed air toward the gap in the vertical frame.

In addition, the vertical frame may be provided with a guide rail for guiding a path so that the first injection nozzle moves up and down.

In addition, the control panel may further include a movement control unit for controlling the driving of the first injection nozzle or the guide rail so that the first injection nozzle moves up and down along the guide rail when the compressed air is injected.

In addition, the injection module may be provided with a second injection nozzle disposed on the inner wall of the conveyor forming a gap at the longitudinal end of the gap and for spraying compressed air in the longitudinal direction of the gap.

In addition, the second injection nozzle is provided in a pair to face each other at both ends in the longitudinal direction of the gap,

The injection control unit may control the driving of the injection module so that the pair of second injection nozzles alternately inject compressed air.

According to the present invention, it is possible to remove foreign substances caught in the gap by providing an injection module that sprays compressed air toward the gap formed on the conveyor. It has the effect of preventing abnormal detection and improving the detection accuracy of cargo.

In addition, the present invention has the effect that the nozzle to which the compressed air is sprayed is disposed on the vertical frame of the support or at both ends of the gap so as not to interfere with the cargo sensing of the area sensor, and at the same time to efficiently remove the foreign material caught in the gap.

In addition, the present invention injects compressed air when the conveyor is stopped, so that when the conveyor is stopped due to a foreign material caught in the gap, the foreign material can be immediately removed. By spraying compressed air, it is possible to automatically and immediately remove the causative foreign substances when an abnormality in the cargo is detected by a foreign substance. It works.

1 is a diagram schematically illustrating a conventional sensor area installation state.
FIG. 2 is a diagram illustrating an abnormality detection caused by a foreign material caught in a gap between the conventional conveyor belts.
3 is a functional block diagram of a foreign material removal system according to an embodiment of the present invention.
4 is a view schematically illustrating an installation state of the first injection nozzle according to an embodiment of the present invention.
5 is a functional block diagram of a control panel according to an embodiment of the present invention.
6 is a flowchart illustrating a compressed air injection process according to an embodiment of the present invention.
7 is a view showing the vertical movement of the first injection nozzle according to an embodiment of the present invention.
8 is a diagram schematically illustrating an installation state of the second injection nozzle according to an embodiment of the present invention.
9 (a), (b) is a view showing a driving state of the second injection nozzle according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

3 is a functional block diagram of a foreign material removal system according to an embodiment of the present invention.

The foreign matter removal system according to an embodiment of the present invention removes foreign substances caught in the gap in order to prevent abnormal detection by foreign substances of an area sensor that generates cargo detection information by emitting and receiving light with a gap formed between conveyor belts therebetween. As a system for removal, it may be configured to include the injection module 10 , the control panel 20 and the support 30 .

The injection module 10 sprays compressed air toward the gap, and a compressor for generating compressed air, an injection nozzle through which the compressed air is injected, and a connection pipe for providing the compressed air generated by the compressor to the injection nozzle, And it may be provided with a valve disposed on the path of the connecting pipe to block or release the blocking of the connecting pipe path to determine whether compressed air is injected from the injection nozzle.

At this time, the injection nozzle is arranged to inject compressed air toward the gap, but must be arranged so as not to interfere with the detection of cargo by the area sensor. can be placed. A more detailed description of the injection nozzle and the support 30 will be described later with reference to FIG. 4 .

Referring to FIG. 3 , the control panel 20 is provided to drive and control the injection module 10 . More specifically, the control panel 20 may control the compressor or the valve of the injection module 10 to drive and control so that the compressed air is injected or not injected through the injection nozzle. At this time, the control panel 20 may determine whether the compressed air is injected by determining the time elapsed from the time when the compressed air is finally injected, whether the conveyor is driven, whether an abnormality is detected by the area sensor, etc. 5 will be described later.

4 is a view schematically illustrating an installation state of the first injection nozzle according to an embodiment of the present invention.

As described above, the foreign material removal system according to the present embodiment is provided with the injection module 10, and the injection module 10 is provided with an injection nozzle formed to inject compressed air. And the injection nozzle is arranged to inject compressed air toward the gap, but must be arranged so as not to interfere with the detection of cargo by the area sensor. These injection nozzles may be disposed in various positions, and may be disposed on the support 30 installed on one side of the conveyor c so that the light emitting part or the light receiving part of the area sensor is disposed.

Referring to the first injection nozzle 11 disposed on the support 30 with reference to FIG. 4 , the first injection nozzle 11 is downward toward the gap in the vertical frame 31 disposed in the vertical direction of the support 30 . It may be tilted.

At this time, the support 30 is a tunnel-type support 30 disposed in the vicinity of the gap formed between the conveyor belts as shown in FIG. 1, and the vertical frame 31 disposed in the vertical direction on both sides near the gap of the conveyor (c). and a horizontal frame 32 connecting the upper end of the vertical frame 31 and in which a light emitting unit or a light receiving unit of the area sensor is disposed downward toward the gap. And the first injection nozzle 11 may be arranged to inject compressed air toward the gap in the vertical frame 31 on both sides.

Preferably, the vertical frame 31 may be provided with a guide rail 311 for guiding a path so that the first injection nozzle 11 moves up and down. Therefore, the first injection nozzle 11 is movable up and down along the guide rail 311, and through such vertical movement, the injection position or injection range of the compressed air can be moved or expanded along the longitudinal direction of the gap.

5 is a functional block diagram of a control panel according to an embodiment of the present invention, FIG. 6 is a flowchart illustrating a compressed air injection process according to an embodiment of the present invention, and FIG. 7 is an embodiment of the present invention It is a view showing the vertical movement of the first injection nozzle.

Referring to the configuration of the control panel 20 with reference to FIG. 5 , the control panel 20 includes an injection control unit 21 , a timer unit 22 , a drive determination unit 23 , an abnormality detection determination unit 24 , and a movement control unit 25 . ) may be included.

The injection control unit 21 drives and controls the injection module 10 so that compressed air is injected from the first injection nozzle 11 . Preferably, the injection control unit 21 may control the driving of a compressor or a valve of the injection module 10 so that compressed air is injected from the first injection nozzle 11 . At this time, as described above, the injection control unit 21 drives the injection module 10 so that the compressed air is injected based on the elapsed time from the time when the compressed air is finally injected, whether the conveyor is driven, whether an abnormality is detected by the area sensor, etc. It can be controlled, the time elapsed from the point at which the compressed air was last sprayed is determined by the timer unit 22 , whether the conveyor is driven is determined by the drive determination unit 23 , and whether an abnormality is detected by the area sensor is determined by the abnormal detection determination unit (24) can be judged.

Specifically, the timer unit 22 may count the elapsed time from when the injection control signal is generated when the injection control signal for injection of the compressed air is generated by the injection control unit 21 . The driving determination unit 23 may determine whether the conveyor is driven based on whether the conveyor belt is driven. Preferably, a detection signal generated by a separate sensor for detecting the operation of a driving means such as a roller driving the conveyor belt It can be determined whether the conveyor is driven or not based on the

The abnormality detection determination unit 24 determines whether abnormality is detected based on the cargo detection information generated from the area sensor, or whether an abnormality is detected based on the volume information of the cargo generated through the cargo detection information in a separate control unit. can

Preferably, the abnormality detection determination unit 24 may determine that abnormal detection has occurred when the area sensor continuously detects an object for a predetermined time or longer. This is because, in general, the probability that an object is continuously detected for a predetermined time or longer as cargo transported on a conveyor is less than a predetermined length is highly likely to be an abnormality detection due to a foreign substance.

Preferably, the abnormality detection determination unit 24 may determine that the abnormality detection has occurred when the volume of the object detected by the area sensor increases or decreases by more than a predetermined volume. This is because the cargo transferred on the conveyor is generally a rectangular cargo, so if the detected object volume increases or decreases by more than a predetermined volume, the object is detected due to a foreign material. After the cargo is temporarily detected, the object is detected again due to the foreign material. because the probability is high.

The injection control unit 21 drives and controls the injection module 10 so that the compressed air is injected based on the time elapsed from the time when the compressed air is finally injected, whether the conveyor is driven, whether an abnormality is detected by the area sensor, etc. Looking at the process in detail with reference to FIG. 6 , first, when the driving determination unit 23 determines that the conveyor has started driving (S10), the injection control unit 21 drives and controls the injection module 10 to spray compressed air, It is possible to remove foreign substances or dust caught in the gap before the cargo transfer operation (S20).

When the compressed air is injected, the timer unit 22 may determine the time elapsed from the time when the compressed air was finally injected, and the injection control unit 21 may determine whether a set time has elapsed from the time when the compressed air was finally injected ( S30).

If the set time has elapsed (S30-Y), the injection control unit 21 drives and controls the injection module 10 to spray the compressed air (S20), whereas if the set time has not elapsed (S30-N) , based on the determination of the abnormal detection panda unit ( ), it may be determined whether abnormal detection has occurred ( S40 ).

If an abnormality is detected (S40-Y), the injection control unit 21 drives and controls the injection module 10 to inject compressed air (S20), whereas if no abnormality is detected (S40-N) , based on the determination of the drive determination unit 23, it may be determined whether the drive of the conveyor is stopped (S50).

If the conveyor stops (S50-Y), the injection control unit 21 drives and controls the injection module 10 to spray compressed air (S50), and waits until the conveyor is driven again, while the conveyor If not stopped (S50-N), based on the determination of the elapsed time of the timer unit 22, it can wait until the set time elapses from the time when the compressed air was finally injected.

Meanwhile, referring to FIG. 5 , the control panel 20 is a movement control unit that drives and controls the first injection nozzle 11 or the guide rail 311 so that the first injection nozzle 11 moves up and down along the guide rail 311 . (25) may be further included.

Preferably, when the compressed air is injected through the first injection nozzle 11, the movement control unit 25, as shown in FIG. 7, the first injection nozzle 11 to move up and down along the guide rail. The nozzle 11 or the guide rail 311 may be controlled to be driven. Specifically, when the injection control signal is generated by the injection control unit 21, the movement control unit 25 moves the first injection nozzle 11 or the guide rail 311 so that the first injection nozzle 11 moves up and down along the guide rail. It is possible to control the driving, in this case, the first injection nozzle 11 can continuously spray compressed air even during vertical movement. Through this, when compressed air is injected through the first injection nozzle 11, the injection position moves along the longitudinal direction of the gap and compressed air is injected. can do it

8 is a view schematically illustrating an installation state of a second injection nozzle according to an embodiment of the present invention, and FIGS. 9 (a) and (b) are views of the second injection nozzle according to an embodiment of the present invention; It is a drawing showing a driving state.

As described above, the first injection nozzle 11 is disposed on the vertical frame 31 to spray compressed air toward the gap. As such, the compressed air injected from the first injection nozzle 11 toward the gap is injected from the diagonally upward direction. When the compressed air injection direction is fragmented, it may be difficult to remove a specific foreign material depending on the pinching direction of the foreign material.

Accordingly, as shown in FIG. 8 , the injection module 10 is disposed on the inner wall of the conveyor c that forms a gap at the longitudinal end of the gap g and sprays compressed air in the longitudinal direction of the gap g. A second injection nozzle 12 may be provided, and the second injection nozzle 12 may also be controlled such that compressed air is injected by the injection controller 21 like the first injection nozzle 11 .

At this time, the second injection nozzles 12 may be provided as a pair so as to face each other at both ends of the longitudinal direction of the gap (g). Preferably, when the second injection nozzles 12 are provided as a pair so as to face each other at both longitudinal ends of the gap g, the injection control unit 21 is disposed on one side as shown in (a) of FIG. 9 . When compressed air is injected from the second injection nozzle 12-1, the injection module 10 is driven and controlled so that the compressed air is not injected from the second injection nozzle 12-2 on the other side, and FIG. 9(b) As shown in, when the compressed air is injected from the second injection nozzle 12-2 on the other side, the injection module 10 is controlled so that the compressed air is not injected from the second injection nozzle 12-1 on the one side. can That is, the injection control unit 21 may control the driving of the injection module 10 so that the pair of second injection nozzles 12-1 and 12-2 alternately inject the compressed air.

More preferably, the injection control unit 21 includes all other first injection nozzles 11 and second injection nozzles 12 that are provided to inject compressed air toward the same gap when compressed air is injected from any one injection nozzle. It is possible to prevent the compressed air from being sprayed, and each injection nozzle may sequentially spray the compressed air. As a specific example, the injection control unit 21 may include a first injection nozzle 11 on one side, a first injection nozzle 11 on the other side, a second injection nozzle 12-1 on one side, and a second injection nozzle on the other side. In (12-2), it is possible to control the driving of the injection module 10 to sequentially spray the compressed air for a predetermined time.

Accordingly, it is possible to prevent the compressed air injected between the injection nozzles from interfering with each other and to prevent the output of the compressed air injected from being reduced even when all the injection nozzles provided to inject the compressed air toward the same gap are connected to the same compressor.

The above description is merely illustrative of the technical spirit of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

10: injection module
11: first injection nozzle
12: second injection nozzle
20: control panel
21: injection control unit
22: timer unit
23: drive determination unit
24: abnormality detection determination unit
25: movement control
30: support
31: vertical frame
311: guide rail
32: horizontal frame

Claims (11)

In the foreign material removal system for preventing abnormal detection by foreign substances of an area sensor generating cargo detection information by emitting and receiving light across a gap formed on a conveyor, the system comprising:
a spray module for spraying compressed air toward the gap; and
A control panel having an injection control unit for driving control of the injection module and an abnormality detection determination unit for determining whether abnormal detection of the area sensor occurs,
The foreign object removal system, characterized in that the abnormality detection determination unit determines that the abnormality detection has occurred when the volume of the object detected by the area sensor increases or decreases by more than a predetermined volume.
The method of claim 1,
The control panel further comprises a timer unit for determining the elapsed time from the time of final injection of the compressed air,
The injection control unit is a foreign material removal system, characterized in that the driving control of the injection module to inject the compressed air when a predetermined time elapses from the time of final injection of the compressed air.
The method of claim 1,
The control panel further comprises a driving determination unit for determining whether the conveyor is driven,
The injection control unit is a foreign material removal system, characterized in that the driving control of the injection module so as to inject the compressed air when the conveyor driving is started or the conveyor driving is stopped.
The method of claim 1,
The injection control unit is a foreign material removal system, characterized in that the driving control of the injection module so as to inject the compressed air when it is determined that the abnormal detection has occurred in the abnormality detection determination unit.
5. The method of claim 4,
The foreign matter removal system, characterized in that when the area sensor continuously detects an object for a predetermined time or more, the abnormal detection determination unit determines that the abnormal detection has occurred.
delete According to claim 1, wherein the foreign matter removal system
Further comprising a support having a vertical frame disposed in the vertical direction on both sides near the gap of the conveyor, and a horizontal frame that connects the upper end of the vertical frame and the light emitting part or light receiving part of the area sensor is disposed downward toward the gap, ,
The injection module is a foreign material removal system, characterized in that provided with a first injection nozzle for injecting compressed air toward the gap in the vertical frame.
8. The method of claim 7,
Foreign matter removal system, characterized in that the vertical frame is provided with a guide rail for guiding a path so that the first injection nozzle moves up and down.
9. The method of claim 8,
The control panel further comprises a movement control unit for controlling the driving of the first injection nozzle or the guide rail so that the first injection nozzle moves up and down along the guide rail when compressed air is injected.
delete In the foreign material removal system for preventing abnormal detection by foreign substances of an area sensor generating cargo detection information by emitting and receiving light across a gap formed on a conveyor, the system comprising:
a spray module for spraying compressed air toward the gap; and
and a control panel having an injection control unit for driving and controlling the injection module,
The injection module includes a second injection nozzle disposed on the inner wall of the conveyor forming the gap at the longitudinal end of the gap and spraying compressed air in the longitudinal direction of the gap,
The second injection nozzles are provided in a pair so as to face each other at both ends in the longitudinal direction of the gap,
The injection control unit is a foreign material removal system, characterized in that the driving control of the injection module so that the pair of second injection nozzles alternately inject the compressed air.

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