CN107497700B

CN107497700B - Express delivery system for sorting express items and control method thereof

Info

Publication number: CN107497700B
Application number: CN201710841382.4A
Authority: CN
Inventors: 杨光明; 李潇波
Original assignee: HANGZHOU WARUI TECHNOLOGY Co Ltd
Current assignee: HANGZHOU WARUI TECHNOLOGY Co Ltd
Priority date: 2017-09-18
Filing date: 2017-09-18
Publication date: 2020-03-20
Anticipated expiration: 2037-09-18
Also published as: CN107497700A

Abstract

The invention provides a loading system for sorting express mails and a control method thereof, wherein identification codes on the express mails are scanned and analyzed to obtain sending addresses of the express mails, then the fast-forwarding weight and volume are measured, then the qualified express mails are sent to a sorting device, delivery bit data matched with the sending addresses are sent to the sorting device, then the sorting device runs to the delivery bit and delivers the express mails, the whole loading process has less manual participation, the works of scanning, weighing, measuring the volume and the like of the express mails are automatically completed, and finally the express mails are automatically transferred to sorting equipment, so that the efficiency of the sorting work is improved.

Description

Express delivery system for sorting express items and control method thereof

Technical Field

The invention relates to the technical field of logistics sorting, in particular to a express delivery system for sorting express items and a control method thereof.

Background

At present, the logistics industry reaches the well blowout development period, each logistics company needs to deal with a large number of packages every day, and competition among different logistics companies is increased day by day, so that timeliness and accuracy are the targets pursued by express companies and broad clients. Among them, the speed of sorting the logistics becomes the most important limiting factor for improving the timeliness of each large logistics company.

The invention designs a loading system for express mail sorting and a control method thereof, which can automatically complete the works of express mail scanning, weighing, volume measurement and the like and finally automatically transfer the express mail to sorting equipment.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: in order to solve the problem that the work efficiency of the existing sorting system is low, the invention provides a sorting system for sorting express items and a control method thereof.

The technical scheme adopted by the invention for solving the technical problems is as follows: a method for controlling the loading of express mail comprises the following steps:

s1, acquiring a picture of the identification code on the express mail shot by the code scanning unit, analyzing the picture of the identification code to obtain destination data of the express mail to be sent, and obtaining delivery position data of the express mail according to the destination data;

s2, acquiring weight data of the express mail detected by the weighing unit, acquiring length data of the express mail detected by the volume measuring unit, comparing the weight data and the length data with a preset weight threshold value and a preset length threshold value respectively, and performing the next step if the express mail is not overweight or overlong;

s3, starting the conveying unit, and controlling the conveying speed of the conveying unit to be V1;

s4, width data and height data of the express mail detected by the volume measuring unit are obtained, the width data and the height data are compared with a preset width threshold value and a preset height threshold value respectively, and if the width data and the height data are not ultra-wide and not ultra-high, the delivery position data are sent to a sorting device;

s5, accelerating the conveying speed of the workpiece feeding unit to be V2; and in the whole time or part of the time for driving the express mail to move by the acceleration express mail loading unit, the speed V2 is greater than V1.

Preferably, the initial value of the speed V2 is smaller than the speed V1, and a step S4-5 is further included between steps S4 and S5, where the speed V2 is increased after the signal that the express reaches the acceleration piece loading unit is acquired, and V2 > V1.

Preferably, in steps S4-5 and S5, a timer is started when width data and/or height data of a package detected by the volume measuring unit is acquired:

after n1 microseconds, the conveying speed V2 of the acceleration loading unit is increased, so that V2 is greater than V1, wherein n1 is greater than or equal to 0;

n2 microseconds later the transport unit is shut down and the speed V2 is reduced such that V2 < V1, where n2 > n 1.

Preferably, the values of the speed V2 and the speed V1 are constant and V2 > V1.

Preferably, in step S2, an alarm signal is issued if it is overweight and/or overlong.

Preferably, in step S2, the abnormal position data is sent to the sorting device if it is overweight and/or overlong.

Preferably, in step S4, if it is ultra-wide and/or ultra-high, the abnormal position data is sent to the sorting apparatus.

The invention also provides a system for sorting express mails, which comprises:

the identification unit is configured to acquire a picture of the identification code on the express mail shot by the code scanning unit, analyze the picture of the identification code and acquire destination data to be sent by the express mail, and acquire delivery position data of the express mail according to the destination data;

the first judging unit is configured to acquire weight data of the express mail detected by the weighing unit, acquire length data of the express mail detected by the volume measuring unit, compare the weight data and the length data with a preset weight threshold value and a preset length threshold value respectively, and perform the next step if the express mail is not overweight or overlong;

a conveying unit configured to start the conveying unit, the conveying speed of the conveying unit being controlled to be V1;

the second judgment unit is configured to acquire width data and height data of the express mail detected by the volume measurement unit, compare the width data and the height data with a preset width threshold value and a preset height threshold value respectively, and send the delivery position data to the sorting device if the width data and the height data are not ultra-wide and not ultra-high;

and the accelerating unit is configured to enable the speed V2 to be greater than V1 in the whole time or part of time of the accelerating loading unit driving the express mail to move, and V2 is the conveying speed of the accelerating loading unit.

Preferably, the initial value of the speed V2 is less than the speed V1, and the express system further comprises a speed increasing unit configured to increase the speed V2 after acquiring a signal that an express reaches the express speed increasing unit, so that V2 > V1.

Preferably, the speed-up unit and the acceleration unit are configured to start timing when acquiring the width data and/or the height data of the express mail detected by the volume measurement unit:

The invention has the advantages that the express delivery system for express delivery sorting and the control method thereof scan and analyze the identification code on the express to obtain the delivery address of the express, then measure the fast-forwarding weight and volume, then send the qualified express to the sorting device, send the delivery bit data matched with the delivery address to the sorting device, then the sorting device operates to the delivery bit and delivers, the whole express delivery process has less manual participation, automatically complete the works of scanning, weighing, measuring volume and the like of the express, and finally automatically transfer the express to the sorting equipment, thereby providing the efficiency of the sorting work.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a top view of a logistics sorting system.

Fig. 2 is a schematic perspective view of a logistics sorting system.

Fig. 3 is a schematic perspective view of a loading device for sorting express items.

Fig. 4 is a schematic perspective view of a loading device for sorting express items.

Fig. 5 is a schematic perspective view of a sorting robot of the logistics sorting system.

Fig. 6 is a schematic perspective view of a sorting robot of the logistics sorting system.

Fig. 7 is a partial three-dimensional structure diagram of a sorting robot of the logistics sorting system.

Fig. 8 is a flow chart of a delivery system for sorting express items.

In the figure:

1. a platform 101, a sorting port;

2. track, 201, piece loading position, 202, delivery position, 203, waiting position, 204 and panel;

3. the device comprises an upper workpiece table, 301, a supporting beam, 302, a base, 303, a U-shaped support, 304, a weighing unit, 305, a conveying unit, 306, supporting legs, 307, a code scanning unit, 308, an L-shaped support, 3010, a second electric roller, 3031, a vertical rod, 3032, a cross rod, 3051, a first electric roller, 3052, a driven roller, 3053, a first conveying belt, 3091, a length detection light emitter, 3092, a length detection light receiver, 3093, a width detection light emitter, 3094, a width detection light receiver, 3095, a height detection light emitter, 3096 and a height detection light receiver;

4. the sorting robot comprises a sorting robot, a shell, a linear roller 403, a front guide wheel 404, a front connecting arm 405, a bottom plate 406, a reflection-type photoelectric sensor 407, a tray 408, an upper mounting seat 409, a lower mounting seat 4010, a push rod motor 4011, a support column 4012 and a hinge;

5. a reflector.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.

A workpiece loading device using the workpiece loading control method is described first in conjunction with a logistics sorting system:

fig. 1 and 2 show top and perspective views of a logistics sorting system comprising:

platform 1, platform 1 upper berth is equipped with track 2, and track 2 is closed annular, has set gradually upper part position 201, a plurality of delivery position 202 and a plurality of waiting position 203 around same direction on track 2, and this same direction can be clockwise, also can anticlockwise, refers to the direction of advance of letter sorting robot on track 2. The loading position 201 is the position of the sorting robot on the track 2 when loading, the delivery position 202 is the position of the sorting robot on the track 2 when delivering the express mail to the sorting opening 101, and the waiting position 203 is the position of the sorting robot on the track 2 when waiting for entering the loading position 201.

A piece loading coordinate unit corresponding to the piece loading position 201;

delivery coordinate units, one delivery coordinate unit corresponding to each delivery position 202;

waiting coordinate units, one waiting coordinate unit corresponding to one waiting bit 203;

the sorting port 101 is formed in the platform 1, and one delivery position 202 corresponds to at least one sorting port 101;

and a loading device 3 for sorting the express items.

As shown in fig. 3 and 4, an embodiment of a feeding device 3 for sorting express mail includes two supporting beams 301, a base 302 and a U-shaped bracket 303, and the feeding device 3 further includes:

the weighing unit 304, in this case the weighing unit 304, is an electronic weighing platform that outputs a weighing result, for example

The PBA430-QA6 weighing platform is manufactured and sold by a company, the upper surface of the weighing platform is a weighing surface, a weighing sensor is connected below the weighing surface, an analog interface or a digital interface of the weighing platform is connected with a computer, and data measured by the weighing sensor is transmitted into the computer; in other examples, the weighing sensors, weighing surfaces, etc. may be purchased separately and assembled into an electronic weighing platform that outputs the weighing results. The weighing cell 304 is placed on the table of the base 302.

And a conveying unit 305, wherein the conveying unit 305 has a conveying surface, and the tail end of the conveying surface faces to the upper part position 201 in the conveying direction. In this example, the conveying unit 305 includes a first electric roller 3051, three driven rollers 3052 and a conveyer belt 3053, the first electric roller 3051 includes a driving roller and a first driving motor built in the driving roller, the first driving motor is connected to the driving roller and drives the driving roller to rotate after being powered on, the driving roller and the three driven rollers 3052 are parallel to each other and are spaced apart from each other in the conveying direction, and the driving roller may be located at a start end of the conveying or at an end of the conveying. The conveyer belt 3053 is wound around and tensioned by the driving roller 3052 and the driven roller 3052, and an outer horizontal surface of the conveyer belt 3053 above a central axis of the driving roller is a conveying surface. The two ends of the driving roller respectively extend out of one shaft end and the two ends of the driven roller 3052 respectively extend out of one shaft end, the two shaft ends of the driving roller are respectively fixedly connected with the two supporting cross beams 301, the two shaft ends of the driven roller 3052 are respectively fixedly connected with the two supporting cross beams 301, the bottom of each supporting cross beam 301 is fixed with a supporting leg 306, and the bottom end of each supporting leg 306 bears and presses on the weighing surface.

The code scanning unit 307 is used for acquiring an identification code of the express mail on the conveying surface, in this example, the code scanning unit 307 comprises an image shooting device, such as a high-speed shooting instrument or a scanner, the piece loading device 3 further comprises an L-shaped support 308, a long arm of the L-shaped support 308 is vertically fixed on the table top, one end of a short arm of the L-shaped support 308 is connected with the upper end of the long arm, the other end of the short arm is located above the conveying surface and is fixedly connected with a lens of the image shooting device, and the lens of the image shooting device faces the conveying surface. The identification code is binary code, bar code or other coding patterns that can save information, and the identification code setting is up when the express mail puts on conveyer belt 3053 on the outer package of express mail and the express mail, and image shooting equipment shoots the photo of identification code.

And the volume measuring unit is used for measuring the volume of the express mail on the express mail feeding device 3. In this example, the volume measurement unit includes a length detection light emitter 3091, a length detection light receiver 3092, a width detection light emitter 3093, a width detection light receiver 3094, a height detection light emitter 3095 and a height detection light receiver 3096, such as a detection grating manufactured and sold by shenzhen jenxing limited.

The length detection light emitter 3091 and the length detection light receiver 3092 are oppositely arranged on two sides of the conveying surface and are respectively fixed on the two supporting cross beams 301; all the light rays emitted by the length detection light emitter 3091 are perpendicular to the conveying direction of the conveying surface and form a light curtain parallel to the conveying surface;

the width detection light emitter 3093 and the width detection light receiver 3094 are oppositely arranged above and below the tail end of the conveying surface, all light rays emitted by the width detection light emitter 3093 are vertical to the conveying surface, and a light curtain formed by the light rays is vertical to the conveying direction;

the height detection light emitter 3095 and the height detection light receiver 3096 are oppositely disposed on both sides of the end of the conveying surface, all the light rays emitted from the height detection light emitter 3095 are parallel to the conveying surface and the light curtain formed by them is perpendicular to the conveying direction. Two vertical rods 3031 of the U-shaped support 303 are respectively positioned at two sides of the tail end of the conveying surface and are vertically fixed on the table board, a cross rod 3032 of the U-shaped support 303 is connected between the upper ends of the two vertical rods 3031, a height detection light emitter 3095 and a height detection light receiver 3096 are respectively fixed on the two vertical rods 3031, a width detection light emitter 3093 is fixed on the cross rod 3032, and the width detection light receiver is positioned below the tail end of the conveying surface and is fixedly connected with the supporting legs 306.

The feeding device 3 further comprises an accelerating feeding unit, the accelerating feeding unit comprises a second electric roller 3010, the second electric roller 3010 comprises a third roller and a second driving motor, the third roller is positioned at the tail end of the conveying surface, the middle shaft of the third roller is parallel to the middle shaft of the driving roller, and the second driving motor is arranged in the third roller and drives the third roller to rotate; two shaft ends extending out of two ends of the third roller are respectively and fixedly connected with the two supporting cross beams 301, a gap exists between the tail end of the conveying surface and the third roller, two vertical rods 3031 of the U-shaped support 303 are respectively positioned at two sides of the gap, and the width detection light receiver is positioned below the gap. The PLC is connected with the second driving motor through a driver and controls the starting, stopping and accelerating rotation of the first driving motor. Because first driving motor not only will drive the initiative roller and rotate, still drive several driven rollers 3052 and conveyer belt motion, if will let conveyer belt 3053 produce higher energy consumption with the speed motion of rapider certainly, therefore the rotational speed of first driving motor should not be too high, this causes conveyer belt 3053 to give the initial speed of express mail when the express mail breaks away from the conveying face limited, when receiving the restraint in place, the distance of last position 201 and the terminal of conveying face is probably great, the initial speed of express mail will be not enough to let the express mail go up to transport on the face, the third roller that operates alone and the rotational speed is greater than the initiative roller at this time is under the lower energy consumption circumstances, give the express mail bigger initial speed, be enough to guarantee that the express mail can successfully go up to transport on the face. For example, before the main control machine obtains the width data or the height data of the express, the second driving motor rotates at a lower speed or even stops rotating, and when the main control machine obtains the width data or the height data of the express, the second driving motor immediately speeds up, which can further reduce the energy consumption for increasing the faster initial speed for the express.

As shown in fig. 5 to 7, the logistics sorting system further includes a sorting robot 4, the sorting robot 4 includes a housing 401, a microcontroller, a delivery mechanism, a moving mechanism, a positioning mechanism, a communication module, a power module and a workpiece conveying surface, the power module includes a 24V battery and a power conversion circuit disposed in the housing 401, the power conversion circuit is connected with the 24V battery, the power conversion circuit is connected with the microcontroller, a 5V power is output for the microcontroller, the microcontroller has a model of ATmega64, the moving mechanism includes two linear rollers 402, a dc motor and a dc driver, the dc motor and the dc driver are fixed in the housing 401, the dc driver is respectively connected with the 24V battery, the microcontroller and the dc motor, one linear roller 402 is connected with an output shaft of the dc motor as a power wheel, the microcontroller controls the dc motor to rotate according to a working condition, driving the power wheel to roll, thereby enabling the sorting robot 4 to move on the platform 1. The moving mechanism further comprises two front guide wheels 403, two rear guide wheels, a front connecting arm 404 and a rear connecting arm, and a front opening and a rear opening are respectively formed in a bottom plate 405 of the shell 401 close to the front side edge and the rear side edge; a front connecting arm 404 is fixedly connected with the bottom plate 405 and is connected with two front guide wheels 403 below the bottom plate 405 through a front opening, the axes of the two front guide wheels 403 are perpendicular to the bottom plate 405 and are in mirror symmetry and can rotate around the axes, a rear connecting arm is fixedly connected with the bottom plate 405 and is connected with two rear guide wheels below the bottom plate 405 through a rear opening, the axes of the two rear guide wheels are perpendicular to the bottom plate 405 and are in mirror symmetry and can rotate around the axes, and the symmetry planes of the two front guide wheels 403 are coplanar with the symmetry planes of the two rear guide wheels and are perpendicular to the axes of the linear rollers 402; the rail 2 has a flat plate 204 perpendicular to the platform 1, and the flat plate 204 is sandwiched between two front guide wheels 403 and between two rear guide wheels, and moves along the rail 2 when the linear rollers 402 of the sorting robot 4 roll. The structure of the track 2, the structure of the moving mechanism and the connection between the track 2 and the moving mechanism can also be in many other ways, for example, in some other embodiments, the track 2 has a groove slightly wider than the axial width of the linear roller 402, the linear roller 402 is placed in the groove, and the linear roller 402 moves along the groove to achieve the effect that the sorting robot 4 moves along the track 2. The positioning mechanism is a reflective photosensor 406, such as a sensor of the type E3Z-R61 manufactured and sold by ohron, the reflective photosensor 406 is arranged on the outer side of the sorting robot 4, a 24V battery is connected to and supplies power to the power supply terminal of the reflective photosensor 406, and the signal terminal of the reflective photosensor 406 is connected to and outputs a signal to the microcontroller. The upper piece coordinate unit, the delivery coordinate unit and the waiting coordinate unit are all reflectors 5, such as E39-R1S reflectors manufactured and sold by Ohlong, and the reflectors 5 are arranged on the outer side of the track 2. The communication module is a WiFi communication module, for example, an SZ12-01-HPW type WiFi communication module manufactured and sold by Shanghai Shuzhou electronics, Inc., the power supply conversion circuit is connected with the WiFi communication module and provides 5V power supply for the WiFi communication module, and a signal interface of the WiFi communication module is connected with the microcontroller. The sorting robot 4 further comprises a tray 407, the upper surface of the tray 407 is a workpiece conveying surface, the delivery mechanism comprises an upper mounting seat 408, a lower mounting seat 409, a push rod motor 4010, two supporting columns 4011 and two hinges 4012, an output shaft of the push rod motor 4010 is hinged to the upper mounting seat 408 through one pin shaft, the bottom of the push rod motor 4010 is hinged to the lower mounting seat 409 through the other pin shaft, the upper mounting seat 408 is fixedly connected with the bottom surface of the tray 407, the push rod motor 4010 is arranged in the shell 401 and is fixedly mounted on the bottom plate 405 in a lower mode, the two hinges 4012 are respectively fixed to the upper ends of the two supporting columns 4011, one blade of each hinge 4012 is fixedly connected to the upper end of each supporting column 4011, the other blade is fixedly connected to the bottom surface of the tray 407, and the lower ends of the two supporting; the tray 407 is parallel to the bottom plate 405 and above the bottom plate 405 when laid flat, the two hinges 4012 are located at the same side edge of the tray 407, and the opening and closing openings of the two hinges face to the other side edge of the tray 407; push rod motor 4010 is connected with 24V battery and microcontroller respectively through a relay, still be connected with a trigger circuit including the transistor between microcontroller and the relay, trigger circuit still is connected with power conversion circuit's 5V output, microcontroller makes the transistor switch on to trigger circuit send signal according to the operating mode, and then the coil that makes the relay gets electric, make 24V battery and push rod motor 4010 switch on, push rod motor 4010 turns over tray 407 after getting electric, make the tray 407 slope of keeping flat, express mail on the tray 407 will be delivered in sorting mouth 101.

The logistics sorting system further comprises a PLC and a main control computer, wherein the PLC is connected with the first driving motor through a driver and controls the first driving motor to start, stop, positively rotate and reversely rotate. The main control computer is a computer, is connected with PLC's input, gives PLC send signal according to the operating mode, commands PLC to the control of a driving motor. The weighing unit 304 is connected with a main control computer and transmits data of the weight of the collected express items to the main control computer, a light receiver and a light emitter which are included in the volume measuring unit are respectively connected with 220V commercial power and the main control computer through a grating controller, the light receiver transmits the data of the volume of the collected express items to the main control computer, a code scanning unit 307 is connected with the main control computer and transmits pictures of shot identification codes to the main control computer, a network interface of the main control computer is connected with a router, and a WiFi communication module of the sorting robot 4 is also connected with the router, so that the main control computer and the WiFi communication module are connected into the same local area network, and communication between the main control computer and the microcontroller is realized.

As shown in fig. 8, it is a flowchart of an embodiment of a method for controlling loading of express mail, comprising the following steps:

s1, acquiring the picture of the identification code on the express mail shot by the code scanning unit, analyzing the picture of the identification code to obtain destination data of the express mail to be sent, and obtaining delivery position data of the express mail according to the destination data; in this example, a mapping form is preset, different destination data correspond to different delivery position data, the delivery position data are digitally encoded, stations of the upper piece 201, the delivery position 202 and the waiting position 203 are labeled in advance, for example, the number of the upper piece 201 is 0, the number of n delivery positions 202 after the upper piece 201 is 1, 2, 3.. n, the number of m waiting positions 203 after the n delivery position 202 is n +1, n +2, n +3.. n + m, the reflecting type photoelectric sensor 406 emits light, the light is reflected by the reflector to be received by the reflecting type photoelectric sensor 406 every time the sorting robot 4 reaches one station, the sorting robot 4 counts +1, specifically, the sorting robot 4 counts 0 at the upper piece 201, and the count +1 becomes 1 when it moves to the first delivery position 202 after the upper piece 201, the sorting robot 4 is positioned at the position with the number of 1 and corresponds to the number of the delivery position 202, and then when the sorting robot reaches one station, the counting number is +1, the accumulated counting number corresponds to the number of the station, when the sorting robot returns to the upper part position 201 after moving for one circle along the track 2, the counting number is n + m +1, and the counting number is cleared; and obtaining delivery bit data in a table look-up mode.

S2, acquiring weight data of the express mail detected by the weighing unit, acquiring length data of the express mail detected by the volume measuring unit, and comparing the weight data and the length data with a preset weight threshold value and a preset length threshold value respectively. In other examples, if the express delivery device is overweight and/or overlong, the abnormal position data is sent to the sorting device, an abnormal position is arranged on the track, an abnormal opening is formed in the platform corresponding to the abnormal position, then the conveying unit and the acceleration piece feeding unit are started, the express is delivered to the sorting device, and the sorting device conveys the express to the abnormal position and delivers the express to the abnormal opening. If the weight is not overweight and the length is not overlong, the next step is carried out;

s3, starting the conveying unit, controlling the conveying speed of the conveying unit to be V1, and when the express mail is conveyed to the width detection unit and the height detection unit by the conveying belt:

s4, width data and height data of the express mail detected by the volume measuring unit are obtained, the width data and the height data are compared with a preset width threshold value and a preset height threshold value respectively, and if the width data and the height data are not ultra-wide and not ultra-high, delivery position data are sent to a sorting device; and if the express delivery is ultra-wide and/or ultra-high, sending abnormal position data to the sorting device, sending the express delivery to the sorting device through the acceleration express delivery unit, and transporting the express delivery to an abnormal position and delivering the express delivery to an abnormal port by the sorting device.

S5, the initial value of the conveying speed V2 of the acceleration loading unit is smaller than the speed V1 and can be 0, namely the speed V2 is kept at the initial value before the express reaches the width detection unit and the height detection unit, and the timing is started when the width data and/or the height data of the express detected by the volume measurement unit are acquired:

n2 microseconds later the transport unit is shut down and the speed V2 is reduced to the initial value, where n2 > n 1. In this example, the timing is started when the width data and/or the height data of the express mail detected by the volume measuring unit are acquired, in other examples, the position of the express mail on the conveying unit can be detected, and the timing is started when the express mail reaches a position somewhere before the width detecting unit and the height detecting unit.

In other examples, the conveying speed V2 of the acceleration loading unit is kept at an initial value before the conveying unit is started, the conveying speed V2 of the acceleration loading unit is increased while the conveying unit is started, V2 is larger than V1, the conveying unit is stopped after n3 microseconds, and the speed V2 is reduced to the initial value.

In other examples, the acceleration load unit is always on, the values of speed V2 and speed V1 are constant and V2 > V1.

The invention also provides an embodiment of a delivery system for sorting express items, which comprises:

the identification unit is configured to acquire the picture of the identification code on the express mail shot by the code scanning unit, analyze the picture of the identification code and acquire destination data to be sent by the express mail, and acquire delivery position data of the express mail according to the destination data; in this example, a mapping form is preset, different destination data correspond to different delivery position data, the delivery position data are digitally encoded, stations of the upper piece 201, the delivery position 202 and the waiting position 203 are labeled in advance, for example, the number of the upper piece 201 is 0, the number of n delivery positions 202 after the upper piece 201 is 1, 2, 3.. n, the number of m waiting positions 203 after the n delivery position 202 is n +1, n +2, n +3.. n + m, the reflecting type photoelectric sensor 406 emits light, the light is reflected by the reflector to be received by the reflecting type photoelectric sensor 406 every time the sorting robot 4 reaches one station, the sorting robot 4 counts +1, specifically, the sorting robot 4 counts 0 at the upper piece 201, and the count +1 becomes 1 when it moves to the first delivery position 202 after the upper piece 201, the sorting robot 4 is positioned at the position with the number of 1 and corresponds to the number of the delivery position 202, and then when the sorting robot reaches one station, the counting number is +1, the accumulated counting number corresponds to the number of the station, when the sorting robot returns to the upper part position 201 after moving for one circle along the track 2, the counting number is n + m +1, and the counting number is cleared; and obtaining delivery bit data in a table look-up mode.

The first judging unit is configured to obtain weight data of the express mail detected by the weighing unit, obtain length data of the express mail detected by the volume measuring unit, and compare the weight data and the length data with a preset weight threshold value and a preset length threshold value respectively. In other examples, if the express delivery device is overweight and/or overlong, the abnormal position data is sent to the sorting device, an abnormal position is arranged on the track, an abnormal opening is formed in the platform corresponding to the abnormal position, then the conveying unit and the acceleration piece feeding unit are started, the express is delivered to the sorting device, and the sorting device conveys the express to the abnormal position and delivers the express to the abnormal opening. If the weight is not overweight and the length is not overlong, the next step is carried out;

and the conveying unit is configured to control the conveying speed of the conveying unit to be V1, and when the express mail is conveyed to the width detection unit and the height detection unit by the conveying belt:

the second judgment unit is used for acquiring width data and height data of the express mail detected by the volume measurement unit, comparing the width data and the height data with a preset width threshold value and a preset height threshold value respectively, and sending delivery position data to the sorting device if the express mail is not ultra-wide or ultra-high; and if the express delivery is ultra-wide and/or ultra-high, sending abnormal position data to the sorting device, sending the express delivery to the sorting device through the acceleration express delivery unit, and transporting the express delivery to an abnormal position and delivering the express delivery to an abnormal port by the sorting device.

The initial value of the conveying speed V2 of the acceleration loading unit is less than the speed V1 and can be 0, namely the speed V2 is kept at the initial value before the express mail reaches the width detection unit and the height detection unit;

the system comprises an acceleration unit and a speed-up unit, wherein when width data and/or height data of the express mail detected by the volume measurement unit are acquired, timing is started:

n2 microseconds later the transport unit is shut down and the speed V2 is reduced to the initial value, where n2 > n 1.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic representation of the term does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A method for controlling the loading of express mail is characterized by comprising the following steps:

2. The method for controlling the feeding of the express mail according to claim 1, wherein: the initial value of the speed V2 is smaller than the speed V1, the method further comprises a step S4-5 between the steps S4 and S5, the speed V2 is increased after the signal that the express reaches the accelerating and loading unit is obtained, and V2 is larger than V1.

3. The method for controlling the delivery of the letter for sorting the quick-release mail according to claim 2, wherein: in steps S4-5 and S5, a timer is started when width data and/or height data of the package detected by the volume measurement unit is acquired:

4. The method for controlling the feeding of the express mail according to claim 1, wherein: the values of the speed V2 and speed V1 are constant and V2 > V1.

5. The method for controlling the feeding of the express mail according to claim 1, wherein: in step S2, an alarm signal is issued if it is overweight and/or overlong.

6. The method for controlling the feeding of the express mail according to claim 1, wherein: in step S2, if it is overweight and/or overlong, the abnormal position data is sent to the sorting device.

7. The method for controlling the feeding of the express mail according to claim 1, wherein: in step S4, if it is ultra-wide and/or ultra-high, the abnormal position data is sent to the sorting apparatus.

8. A system for picking up quick dispatches, comprising:

9. A system for picking up quick dispatches as set forth in claim 8, wherein: the initial value of the speed V2 is less than the speed V1, and the piece loading system further comprises a speed increasing unit which is configured to increase the speed V2 after acquiring a signal that the express reaches the acceleration piece loading unit, so that V2 is greater than V1.

10. A system for picking up quick dispatches as set forth in claim 9, wherein: the speed-up unit and the acceleration unit are configured to start timing when acquiring width data and/or height data of the express mail detected by the volume measurement unit: