Package supply method and linear narrow-band sorting equipment

Abstract

According to the bag supply method and the linear narrow-band sorting equipment, bags are supplied to one linear narrow-band sorting machine through a plurality of bag supply branch lines, the sorting efficiency of the linear narrow-band sorting machine can be greatly improved, the advantages of the linear narrow-band sorting machine can be fully played, an adjusting conveying line is arranged on each straight line, and in addition, the linear narrow-band sorting equipment can be used for conveying the bags to the linear narrow-band sorting machine. When the narrow-band trolley is reserved, the corresponding narrow-band trolley is reserved for the current package according to the reserved narrow-band trolley of the previous package and the set package distance, the distance between the packages entering the linear narrow-band sorting machine is effectively controlled, and stable sorting is guaranteed. Meanwhile, after the narrow-band trolley for parcel reservation of each parcel supply branch line is determined, each branch line control device adjusts the conveying speed of the corresponding adjustment conveying line according to the position of the reserved narrow-band trolley, so that the parcels of each parcel supply branch line can enter the reserved narrow-band trolley, the interference of parcel supply of a plurality of parcel supply branch lines is avoided, and the parcel supply efficiency is improved. And it is ensured that multi-path packet supply is efficiently and accurately achieved.

Description

Technical Field

[0001] The present invention relates to the field of logistics sorting, in particular to a package supply method and a linear narrow-band sorting device. Background Art

[0002] At present, in express distribution centers, linear narrow-band sorting equipment is often used in unloading and sorting application scenarios. Existing linear narrow-band sorting equipment mainly includes telescopic machines, pull-belt conveyors and / or visual single-piece separation equipment, DWS equipment, bag conveyors, and linear narrow-band sorting machines, which are arranged in sequence.

[0003] During operation, parcels are manually placed into the telescopic machine for feeding, and the distance between parcels is adjusted and controlled by the belt conveyor in the pulling section so that the parcels are transported in an equidistant queue. When the parcels enter the DWS equipment in turn, the photoelectric sensor at the input end of the DWS equipment is triggered. When the photoelectric sensor is triggered, the barcode reader reads the code, and the control device (PLC) determines the length of the parcel and matches the narrow-band trolley on the linear narrow-band sorting machine according to the length of the parcel. After the parcel passes through the DWS system to obtain the routing information of the parcel, the parcel enters the narrow-band trolley corresponding to the linear narrow-band sorting machine. When the parcel arrives at the designated grid, multiple narrow-band trolleys matching the parcel operate horizontally together to transport the parcel to the designated grid.

[0004] Like the structure disclosed in the Chinese invention patent with application publication number CN116174326A, the existing linear narrow-band sorting equipment has only one package supply line to supply packages to the linear narrow-band sorting machine. However, due to the problems of manual unloading efficiency, pulling distance control method or visual single-piece separation efficiency and DWS equipment efficiency, especially the DWS or code scanning system has certain requirements on the spacing of packages. Therefore, the package supply efficiency greatly limits the sorting efficiency of the linear narrow-band sorter, resulting in the high-efficiency advantage of the linear narrow-band sorter not being reflected. Summary of the invention

[0005] The purpose of the present invention is to solve the above problems existing in the prior art and to provide a package supply method and a linear narrow-band sorting device.

[0006] The purpose of the present invention is achieved through the following technical solutions: A package supply method, based on a linear narrow-band sorting device, the linear narrow-band sorting device comprises a linear narrow-band sorting machine and at least two package supply branches for supplying packages to the linear narrow-band sorting machine, each package supply branch line comprises an adjustment conveying line, the adjustment conveying line comprises at least two adjustment sections, a first photoelectric sensor is provided at the input end of the adjustment conveying line, the first photoelectric sensor is electrically connected to a branch line control device of the package supply branch line where the first photoelectric sensor is located, and each branch line control device communicates with a main control device; The main control device receives the parcel length and trolley reservation request sent by the branch line control devices of the multiple parcel supply branch lines, and reserves the narrow-band trolley of the linear narrow-band sorter for the parcel corresponding to each trolley reservation request in sequence according to the order of the received trolley reservation requests; When it is determined that a narrowband trolley needs to be reserved for a parcel, the main control device determines whether the parcel is a parcel that does not require speed regulation for transportation; If yes, the main control device reserves and binds a narrow-band trolley for the parcel according to the position of the parcel when reserving the narrow-band trolley, the normal conveying speed of the parcel supply branch line, and the operating speed of the trolley loop of the linear narrow-band sorting machine; and the branch line control device of the parcel supply branch line where the parcel is located controls the parcel supply branch line where the parcel is located to convey the parcel to the reserved narrow-band trolley at the normal conveying speed; If not, the main control device reserves and binds the narrow-band trolley corresponding to the parcel according to the position of the narrow-band trolley reserved by a parcel that has reserved a narrow-band trolley before the parcel and the set parcel spacing; and the branch line control device of the parcel supply branch line where the parcel is located controls the conveying speed of the adjustment conveying line of the parcel supply branch line where the parcel is located according to the determined position of the narrow-band trolley corresponding to the parcel and the position of the parcel when reserving the narrow-band trolley to move the parcel to its reserved narrow-band trolley.

[0007] Preferably, there are three bag supply branches, the output end of one of which is connected to the input end of the linear narrow-band sorting machine, and the output ends of the other two are connected to both sides of the linear narrow-band sorting machine and their output ends are close to the input end of the linear narrow-band sorting machine.

[0008] Preferably, when reserving a narrow-band trolley for a parcel, if the main control device determines that no other parcel has reserved a narrow-band trolley before the parcel, it is determined that the parcel is a parcel that does not require speed regulation for transportation; Alternatively, when reserving a narrow-band trolley for a parcel, if the main control device determines that a parcel that has been reserved for a narrow-band trolley before the parcel has completed sorting, it is determined that the parcel is a parcel that does not require speed regulation for transportation.

[0009] Preferably, when reserving a narrow-band trolley for a parcel, if the main control device determines that the parcel supply branch line where the parcel is located conveys the parcel to the narrow-band trolley at a normal conveying speed, and the distance between the narrow-band trolley entered by the parcel and the narrow-band trolley reserved by a parcel that has reserved a narrow-band trolley before the parcel is greater than the set parcel spacing, then it is determined that the parcel is a parcel that does not require speed regulation for conveyance.

[0010] Preferably, when a parcel triggers the second photoelectric sensor at the accumulation conveyor line upstream of the adjustment conveyor line, the branch line control device of the corresponding package supply branch line determines whether there is a parcel at the first adjustment section of the adjustment conveyor line. If so, the accumulation conveyor line is controlled to stop conveying; if not, the accumulation conveyor line is controlled to convey the parcel to the adjustment conveyor line.

[0011] Preferably, when it is determined that the conveying speed of the conveying line where the package is located needs to be adjusted; The branch line control device of the package supply branch line where the package is located determines a first distance between the middle position of the narrow belt trolley in the conveying direction into which the package enters and the middle position of the narrow belt trolley in the conveying direction reserved by the package when the package is conveyed at a normal conveying speed; The branch line control device of the package supply branch line where the package is located calculates the speed to which the conveyor line needs to be adjusted and the time it runs at the speed that needs to be adjusted based on the first distance.

[0012] Preferably, the adjustment section has three sections, and after each adjustment section completes speed regulation and outputs the package, the adjustment section returns to its initial speed.

[0013] Preferably, the speed to which the adjustment section needs to be adjusted and the time it runs at the speed are calculated according to formulas (1)-(4): x=(V²-V 0 ²) / (2×a)+(V 1 ²-V²) / (2×a)+V×T(1); T=(x+y) / V 1 -(VV 0 ) / a-(V 1 -V) / a(2); x = DL(3); y = (ck) × z (4); Where x is the adjustable distance of the conveyor line, D is the length of the conveyor line, L is the extension length of the package in the conveying direction; V is the speed to which the conveyor line is adjusted; V 0 is to adjust the initial speed of the conveyor line; a is to adjust the acceleration of the conveyor line; V 1is the conveying speed of the trolley loop; T is the time for adjusting the conveyor line to run at the speed to be adjusted; y is the first distance between the middle position of the narrow-band trolley in the conveying direction and the middle position of the narrow-band trolley reserved for the parcel in the conveying direction when the parcel is conveyed at the normal conveying speed; c is the positioning point value of the middle position of the narrow-band trolley reserved for the parcel in the conveying direction; k is the positioning point value of the middle position of the narrow-band trolley in the conveying direction when the parcel supply branch line where the parcel is located moves the parcel from the position where the first photoelectric sensor stops triggering to the position where the parcel enters the narrow-band trolley at the normal conveying speed; z is the positioning accuracy; If V≥V calculated according to the above formula 0 , then make the V = V 0 , and determine the time T of running at V according to formulas (5) and (6): X=(V 1 ²-V 0 ²) / (2×a)+V 0 ×T(5); T=(X+y) / V 1 -(V 1 -V 0 ) / a(6); Wherein, X is the adjustment distance of the conveyor line under the initial speed operation.

[0014] A linear narrow-band sorting device comprises a linear narrow-band sorting machine and at least two package supply branches for supplying packages to the linear narrow-band sorting machine, each package supply branch line comprises a first conveyor line, an adjustment conveyor line, a code scanning conveying mechanism and a package input conveyor line which are arranged in sequence, the adjustment conveyor line comprises at least two adjustment sections, a first photoelectric sensor is arranged at the input end of the adjustment conveyor line, the first photoelectric sensor is electrically connected to a branch line control device of the package supply branch line where the first photoelectric sensor is located, and each branch line control device communicates with a main control device.

[0015] Preferably, there are three bag supply branches, the output end of one of which is connected to the input end of the linear narrow-band sorting machine, and the output ends of the other two are connected to both sides of the linear narrow-band sorting machine and their output ends are close to the input end of the linear narrow-band sorting machine.

[0016] Preferably, an accumulation conveyor line is provided between the first conveyor line and the adjustment conveyor line, and a second photoelectric sensor for detecting whether a package has passed is provided at the accumulation conveyor line.

[0017] The advantages of the technical solution of the present invention are mainly reflected in: The package supply method of the present invention can greatly improve the sorting efficiency of the linear narrow-band sorting machine by supplying packages to a linear narrow-band sorting machine through multiple package supply branches, give full play to the advantages of the linear narrow-band sorting machine, and set an adjustment conveyor line on each straight line, and when reserving a narrow-band trolley, the corresponding narrow-band trolley is reserved for the current package according to the narrow-band trolley reserved for the previous package and the set package spacing, effectively controlling the spacing between packages entering the linear narrow-band sorting machine to ensure stable sorting. At the same time, after determining the narrow-band trolley reserved for the parcels of each package supply branch line, each branch line control device adjusts the conveying speed of the corresponding adjustment conveyor line according to the position of the reserved narrow-band trolley, thereby ensuring that the parcels of each package supply branch line can enter the reserved narrow-band trolley, avoiding the interference of the package supply of multiple package supply branches, and ensuring that the multi-channel package supply is realized efficiently and accurately.

[0018] The present invention is provided with three-way package supply branch lines, which can improve the package supply efficiency to the greatest extent without occupying too much side space of the linear narrow-band sorting machine, thereby maximizing the efficiency of the linear narrow-band sorting machine.

[0019] The present invention adjusts the conveying section into multiple sections and restores the initial speed after the package leaves each section, which can ensure the conveying of subsequent packages to the greatest extent and is conducive to improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a top view of the linear narrow band sorting device of the present invention; Figure 2 It is a process schematic diagram of the packaging method of the present invention. DETAILED DESCRIPTION

[0021] The purpose, advantages and features of the present invention will be illustrated and explained by the non-limiting description of the following preferred embodiments. These embodiments are only typical examples of the application of the technical solution of the present invention, and any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of protection claimed by the present invention.

[0022] In the description of the scheme, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0023] The package supply method disclosed by the present invention is described below in conjunction with the accompanying drawings. The package supply method is based on a linear narrow-band sorting device, as shown in the attached drawings. Figure 1 As shown, the linear narrow-band sorting equipment includes a linear narrow-band sorting machine 100 and at least two package supply branches 300 for supplying packages to the linear narrow-band sorting machine 100. Each package supply branch line 300 includes a first conveyor line 310, an adjustment conveyor line 320, a code scanning conveying mechanism 330 and a package input conveyor line 340 which are arranged in sequence. The adjustment conveyor line 320 includes at least two adjustment sections 321. The input end of the adjustment conveyor line 320 is provided with a first photoelectric sensor 322 connected to the branch line control device of the package supply branch line to which the adjustment conveyor line 320 belongs.

[0024] The first conveyor line 310 can be a telescopic machine or a belt conveyor or other feasible equipment as in the prior art. In addition, a pull-off conveyor and / or a visual single-piece separation device can be set between the first conveyor line 310 and the adjustment conveyor line 320 so that the packages can be output at a fixed spacing. Figure 1 As shown, an accumulation conveyor line 350 is arranged between the first conveyor line 310 and the adjustment conveyor line 320. A second photoelectric sensor 351 for detecting whether a package has passed is arranged at the accumulation conveyor line 350. When the second photoelectric sensor 351 is triggered, the accumulation conveyor line 350 can stop conveying so that the output of packages at equal intervals can be controlled according to the adjustment status of the adjustment conveyor line 320.

[0025] As attached Figure 1 As shown, the adjustment conveyor line 320 preferably includes three equal-length adjustment sections 321. Of course, the lengths of the adjustment sections 321 may also be different. For example, the lengths of the three adjustment sections 321 may increase or decrease in sequence. The specific length of the adjustment conveyor line 320 can be designed according to actual needs and is not limited here. The code scanning conveying mechanism 330 is preferably a known DWS device and is not described here. The structure of the package-in conveyor line 340 can be adaptively adjusted according to the installation position of the package supply branch line 300.

[0026] As attached Figure 1 As shown, there are three package supply branch lines 300, the output end of one of which is connected to the input end of the linear narrow-band sorting machine 100, and the output ends of the other two are connected to both sides of the linear narrow-band sorting machine 100 and their output ends are close to the input end of the linear narrow-band sorting machine 100. For the convenience of description, the package supply branch line 300 connected to the linear narrow-band sorting machine 100 is described as the first package supply branch line, the package supply branch line 300 connected to the upper side of the linear narrow-band sorting machine 100 is described as the second package supply branch line, and the package supply branch line 300 connected to the lower side of the linear narrow-band sorting machine 100 is described as the third package supply branch line.

[0027] The upstream of the package-incoming conveyor line 340 of the first package-supply branch line, the second package-supply branch line and the third package-supply branch line have the same structure and are arranged in parallel. The package-incoming conveyor line 340 of the first package-supply branch line can be a single-section or multiple-section belt conveyor. The package-incoming conveyor lines 340 of the second package-supply branch line and the third package-supply branch line have the same structure, and both include a turning section 341 and a side docking conveyor 342 connected to the turning section. The specific structure of the side docking conveyor 342 can refer to the conveying structure of the package supply platform of the cross-belt sorting machine, which will not be described in detail here.

[0028] Each package supply branch line also includes a branch line control device, which is communicatively connected to the main control device. Moreover, when conveying at a normal conveying speed, the initial conveying speeds of the various adjustment sections of the speed regulating conveying line are the same and are less than the conveying speed of the code scanning conveying mechanism, and the conveying speeds of the code scanning conveying mechanism 330 and the package input conveying line 340 of each package supply branch line are the same as the operating speed of the trolley loop line of the linear narrow-band sorting machine.

[0029] Of course, the side of the linear narrow-band sorting machine 100 is also provided with a chute or a grid opening to realize the dropping of packages.

[0030] When supplying packages, the three package supply branches 300 supply packages at the same time, and the packages entering each package supply branch line 300 will pass through the first conveyor line 310, the adjustment conveyor line 320, the code scanning conveyor mechanism 330 and the package entry conveyor line 340 in sequence, and finally enter the corresponding narrow-band trolley on the linear narrow-band sorting machine 100. In the package supply process of each package supply branch line 300, when a package triggers the second photoelectric sensor 351 at the accumulation conveyor line 350 upstream of the adjustment conveyor line 320, it is determined whether there is a package at the first adjustment section 321 of the adjustment conveyor line 320. If so, the accumulation conveyor line 350 is stopped from conveying. If not, the accumulation conveyor line 350 continues to convey the package to the adjustment conveyor line 320, so that the spacing between packages can be effectively controlled to avoid subsequent packages interfering with the packages on the adjustment conveyor line 320, and at the same time improve the package supply rhythm.

[0031] When the parcel of each package supply branch line triggers the first photoelectric sensor, the branch line control device determines the length of the parcel according to the duration of the triggering of the first photoelectric sensor and sends the length of the parcel and the trolley reservation request to the main control device. The position of the parcel when the branch line control device sends the trolley reservation request is the position of the parcel when the narrow-band trolley is reserved. Since multiple package supply branch lines 300 supply packages at the same time, and the narrow-band trolley reserved for the parcels of each package supply branch line 300 will affect the narrow-band trolleys to be reserved for the parcels of other package supply branch lines 300, therefore, when the main control device receives the parcel lengths and trolley reservation requests sent by the branch line control devices of multiple package supply branch lines, it will reserve the narrow-band trolley of the linear narrow-band sorting machine for the parcels corresponding to each trolley reservation request in turn according to the order of the received trolley reservation requests.

[0032] For example, the branch line control device of the first package supply branch line is the first to determine the length of its previous package and issue a trolley reservation request, the branch line control device of the second package supply branch line is the second to determine the length of its previous package and issue a trolley reservation request, and the branch line control device of the third package supply branch line is the third to determine the length of its previous package and issue a trolley reservation request. The main control device first reserves a narrow-band trolley for the package with the determined length on the first package supply branch line, then reserves a narrow-band trolley for the package with the determined length on the third package supply branch line, and then reserves a narrow-band trolley for the package with the determined length on the second package supply branch line.

[0033] When the main control device determines that a narrowband trolley needs to be reserved for a parcel, it is necessary to determine whether the parcel is a parcel that does not require speed regulation for transportation, that is, to determine whether the adjustment conveying line of the parcel supply branch line where the parcel is located needs speed regulation.

[0034] Specifically, when reserving a narrow-band trolley for a parcel, if the main control device determines that no other parcel has reserved a narrow-band trolley before the parcel, it is determined that the parcel is a parcel that does not require speed regulation for transportation.

[0035] Alternatively, when reserving a narrow-band trolley for a parcel, if the main control device determines that a parcel that has been reserved for a narrow-band trolley before the parcel has completed sorting, it is determined that the parcel is a parcel that does not require speed regulation for transportation.

[0036] Alternatively, when reserving a narrow-band trolley for a parcel, if it is determined that the parcel supply branch line 300 where the parcel is located conveys the parcel to the narrow-band trolley at a normal conveying speed, and the distance between the narrow-band trolley entered by the parcel and the narrow-band trolley reserved by a parcel that has reserved a narrow-band trolley before the parcel is greater than the set parcel spacing, then it is determined that the parcel is a parcel that does not require speed regulation for conveyance.

[0037] If so, that is, the main control device determines that the parcel is a parcel that does not require speed regulation for transportation, then the main control device reserves and binds a narrow-band trolley for the parcel according to the position of the parcel when reserving a narrow-band trolley, the normal conveying speed of the parcel supply branch line 300, and the operating speed of the trolley loop of the linear narrow-band sorting machine 100, and sends it to the branch line control device of the parcel supply branch line where the parcel is located. The branch line control device of the parcel supply branch line where the parcel is located controls the parcel supply branch line 300 where the parcel is located to convey the parcel to the reserved narrow-band trolley at the normal conveying speed, that is, there is no need to adjust the conveying speed of the adjustment conveyor line 320 of the parcel supply branch line 300 where the parcel is located.

[0038] If not, that is, the main control device determines that the parcel is not a parcel that does not require speed regulation, and other parcels have been reserved for narrow-band trolleys before the parcel, the main control device reserves and binds the narrow-band trolley corresponding to the parcel according to the position of the narrow-band trolley reserved by the parcel that has reserved a narrow-band trolley before the parcel and the set parcel spacing, and sends it to the corresponding branch line control device. The branch line control device of the parcel supply branch line where the parcel is located controls the conveying speed of the adjustment conveying line 320 of the parcel supply branch line 300 where the parcel is located according to the determined position of the narrow-band trolley corresponding to the parcel (the position of the narrow-band trolley bound to the parcel) and the position of the parcel when reserving the narrow-band trolley to move the parcel to its reserved narrow-band trolley.

[0039] That is, before a parcel reserves a narrow-band cart, other parcels have already reserved a narrow-band cart. In this case, the narrow-band cart that the current parcel can reserve needs to be located behind the narrow-band cart that the previous parcel has reserved. At the same time, it is necessary to ensure that the distance between the narrow-band cart to be reserved and the narrow-band cart that the previous parcel has reserved meets the set parcel distance. The set parcel distance can be set as needed and is not limited here.

[0040] When it is determined that the conveying speed of the conveying line 320 where the package is located needs to be adjusted; The branch line control device of the package supply branch line where the package is located determines the first distance between the middle position of the narrow-band trolley in the conveying direction into which the package enters when the package is conveyed at a normal conveying speed and the middle position of the narrow-band trolley in the conveying direction for which the package is reserved.

[0041] The branch line control device of the package supply branch line where the package is located calculates the speed to which the conveyor line 320 needs to be adjusted and the time it runs at the speed to which it needs to be adjusted based on the first distance and other parameters.

[0042] Specifically, the speed to which the adjustment section 321 needs to be adjusted and the time it runs at the speed are calculated according to formulas (1)-(4): x=(V²-V 0²) / (2×a)+(V 1 ²-V²) / (2×a)+V×T(1); T=(x+y) / V 1 -(VV 0 ) / a-(V 1 -V) / a(2); x = DL(3); y = (ck) × z (4); Wherein, x is the adjustable distance of the conveyor line 320, D is the length of the conveyor line 320, L is the extension length of the package in the conveying direction; V is the speed to which the conveyor line 320 is to be adjusted; V 0 is to adjust the initial speed of the conveyor line 320; a is to adjust the acceleration of the conveyor line 320; V 1 is the conveying speed of the trolley loop; T is the time for adjusting the conveyor line 320 to run at the speed to be adjusted; y is the first distance between the middle position of the narrow-band trolley in the conveying direction and the middle position of the narrow-band trolley reserved for the parcel when the parcel is conveyed at the normal conveying speed; c is the positioning point value of the middle position of the narrow-band trolley reserved for the parcel in the conveying direction; k is the positioning point value of the middle position of the narrow-band trolley in the conveying direction when the parcel supply branch line 300 where the parcel is located moves the parcel from the position of stopping to trigger the first photoelectric sensor 322 to entering the narrow-band trolley at the normal conveying speed; c and k can be determined according to the known position tracking method of the narrow-band trolley of the linear narrow-band sorting machine; z is the positioning accuracy.

[0043] Of course, if V≥V calculated according to the above formula 0 , then make the V = V 0 , and determine the time T of running at V according to formulas (5) and (6): X=(V 1 ²-V 0 ²) / (2×a)+V 0 ×T(5); T=(X+y) / V 1 -(V 1 -V 0 ) / a(6); Wherein, X is the adjustment distance of the conveyor line under the initial speed operation.

[0044] Furthermore, the branch line control device of the package supply branch line where the package is located controls the adjustment section 321 to return to its initial speed after each adjustment section 321 completes speed regulation and outputs the package.

[0045] There are many implementation methods of the present invention, and all technical solutions formed by equivalent transformation or equivalent transformation fall within the protection scope of the present invention.

Claims

1. Package supply method, Features: Based on the linear narrow-band sorting equipment, the linear narrow-band sorting equipment comprises a linear narrow-band sorting machine and at least two bag supply branches for supplying bags to the linear narrow-band sorting machine, each bag supply branch line comprises an adjustment conveying line, the adjustment conveying line comprises at least two adjustment sections, the input end of the adjustment conveying line is provided with a first photoelectric sensor, the first photoelectric sensor is electrically connected to a branch line control device of the bag supply branch line where the first photoelectric sensor is located, and each branch line control device communicates with a main control device; The main control device receives the parcel length and trolley reservation request sent by the branch line control devices of the multiple parcel supply branch lines, and reserves the narrow-band trolley of the linear narrow-band sorter for the parcel corresponding to each trolley reservation request in sequence according to the order of the received trolley reservation requests; When it is determined that a narrowband trolley needs to be reserved for a parcel, the main control device determines whether the parcel is a parcel that does not require speed regulation for transportation; If yes, the main control device reserves and binds a narrow-band trolley for the parcel according to the position of the parcel when reserving the narrow-band trolley, the normal conveying speed of the parcel supply branch line, and the operating speed of the trolley loop of the linear narrow-band sorting machine; and the branch line control device of the parcel supply branch line where the parcel is located controls the parcel supply branch line where the parcel is located to convey the parcel to the reserved narrow-band trolley at the normal conveying speed; If not, the main control device reserves and binds the narrow-band trolley corresponding to the parcel according to the position of the narrow-band trolley reserved by a parcel that has reserved a narrow-band trolley before the parcel and the set parcel spacing; and the branch line control device of the parcel supply branch line where the parcel is located controls the conveying speed of the adjustment conveying line of the parcel supply branch line where the parcel is located according to the determined position of the narrow-band trolley corresponding to the parcel and the position of the parcel when reserving the narrow-band trolley to move the parcel to its reserved narrow-band trolley.

2. The packaging method according to claim 1, Features: There are three bag supply branches, one of which has its output end connected to the input end of the linear narrow-band sorting machine, and the other two have their output ends connected to both sides of the linear narrow-band sorting machine and their output ends are close to the input end of the linear narrow-band sorting machine.

3. The packaging method according to claim 1, Features: When reserving a narrow-band trolley for a parcel, if the main control device determines that no other parcel has reserved a narrow-band trolley before the parcel, it is determined that the parcel is a parcel that does not require speed regulation for transportation; Alternatively, when reserving a narrow-band trolley for a parcel, if the main control device determines that a parcel that has been reserved for a narrow-band trolley before the parcel has completed sorting, it is determined that the parcel is a parcel that does not require speed regulation for transportation.

4. The packaging method according to claim 3, Features: When reserving a narrow-band trolley for a parcel, if the main control device determines that the parcel supply branch line where the parcel is located conveys the parcel to the narrow-band trolley at a normal conveying speed, and the distance between the narrow-band trolley entered by the parcel and the narrow-band trolley reserved by a parcel that has reserved a narrow-band trolley before the parcel is greater than the set parcel spacing, then it is determined that the parcel is a parcel that does not require speed regulation for conveyance.

5. The packaging method according to claim 1, Features: When a package triggers the second photoelectric sensor at the accumulation conveyor line upstream of the adjustment conveyor line, the branch line control device of the corresponding package supply branch line determines whether there is a package at the first adjustment section of the adjustment conveyor line. If so, the accumulation conveyor line is controlled to stop conveying; if not, the accumulation conveyor line is controlled to convey the package to the adjustment conveyor line.

6. The packaging method according to claim 1, Features: When it is determined that the conveying speed of the conveying line where the package is located needs to be adjusted; The branch line control device of the package supply branch line where the package is located determines a first distance between the middle position of the narrow belt trolley in the conveying direction into which the package enters and the middle position of the narrow belt trolley in the conveying direction reserved by the package when the package is conveyed at a normal conveying speed; The branch line control device of the package supply branch line where the package is located calculates the speed to which the conveyor line needs to be adjusted and the time it runs at the speed that needs to be adjusted based on the first distance.

7. The packaging method according to claim 6, Features: The adjustment section consists of three sections. After each adjustment section completes speed adjustment and outputs the package, the adjustment section returns to its initial speed.

8. The packaging method according to claim 6, Features: The speed to which the adjustment section needs to be adjusted and the time it runs at this speed are calculated according to formulas (1)-(4): x=(V²-V 0 ²) / (2×a)+(V 1 ²-V²) / (2×a)+V×T(1); T=(x+y) / V 1 -(V-V 0 ) / a-(V 1 -V) / a(2); x = DL(3); y = (ck) × z (4); Where x is the adjustable distance of the conveyor line, D is the length of the conveyor line, L is the extension length of the package in the conveying direction; V is the speed to which the conveyor line is adjusted; V 0 is to adjust the initial speed of the conveyor line; a is to adjust the acceleration of the conveyor line; V 1 is the conveying speed of the trolley loop; T is the time for adjusting the conveyor line to run at the speed to be adjusted; y is the first distance between the middle position of the narrow-band trolley in the conveying direction and the middle position of the narrow-band trolley reserved for the parcel in the conveying direction when the parcel is conveyed at the normal conveying speed; c is the positioning point value of the middle position of the narrow-band trolley reserved for the parcel in the conveying direction; k is the positioning point value of the middle position of the narrow-band trolley in the conveying direction when the parcel supply branch line where the parcel is located moves the parcel from the position where the first photoelectric sensor stops triggering to the position where the parcel enters the narrow-band trolley at the normal conveying speed; z is the positioning accuracy; If V≥V calculated according to the above formula 0 , then make the V = V 0 , and determine the time T of running at V according to formulas (5) and (6): X=(V 1 ²-V 0 ²) / (2×a)+V 0 ×T(5); T=(X+y) / V 1 -(V 1 -V 0 ) / a(6); Wherein, X is the adjustment distance of the conveyor line under the initial speed operation.

9. Linear narrow-band sorting equipment, Features: It includes a linear narrow-band sorting machine and at least two package supply branches for supplying packages to the linear narrow-band sorting machine, each package supply branch line includes a first conveyor line, an adjustment conveyor line, a code scanning conveying mechanism and a package input conveyor line which are arranged in sequence, the adjustment conveyor line includes at least two adjustment sections, and the input end of the adjustment conveyor line is provided with a first photoelectric sensor, the first photoelectric sensor is electrically connected to the branch line control device of the package supply branch line where it is located, and each branch line control device communicates with the main control device.

10. The linear narrow-band sorting device according to claim 9, Features: There are three package supply branch lines, the output end of one of which is connected to the input end of the linear narrow-band sorting machine, and the output ends of the other two are connected to both sides of the linear narrow-band sorting machine and their output ends are close to the input end of the linear narrow-band sorting machine; an accumulation conveyor line is arranged between the first conveyor line and the adjustment conveyor line, and a second photoelectric sensor for detecting whether a package passes through is arranged at the accumulation conveyor line.

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