CN113511477B - Goods supply table and goods supply method of sorting machine - Google Patents

Goods supply table and goods supply method of sorting machine Download PDF

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Publication number
CN113511477B
CN113511477B CN202110437943.0A CN202110437943A CN113511477B CN 113511477 B CN113511477 B CN 113511477B CN 202110437943 A CN202110437943 A CN 202110437943A CN 113511477 B CN113511477 B CN 113511477B
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Prior art keywords
package
weighing
section
transmission
speed
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CN113511477A (en
Inventor
王国鹏
张力
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Beijing Jingdong Qianshi Technology Co Ltd
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Beijing Jingdong Qianshi Technology Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G37/00—Combinations of mechanical conveyors of the same kind, or of different kinds, of interest apart from their application in particular machines or use in particular manufacturing processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C3/00—Sorting according to destination
    • B07C3/02—Apparatus characterised by the means used for distribution
    • B07C3/08—Apparatus characterised by the means used for distribution using arrangements of conveyors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/34—Sorting according to other particular properties
    • B07C5/3412—Sorting according to other particular properties according to a code applied to the object which indicates a property of the object, e.g. quality class, contents or incorrect indication
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/36—Sorting apparatus characterised by the means used for distribution
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
    • B65G43/08—Control devices operated by article or material being fed, conveyed or discharged
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
    • B65G47/74—Feeding, transfer, or discharging devices of particular kinds or types
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
    • B65G2201/02—Articles
    • B65G2201/0285—Postal items, e.g. letters, parcels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
    • B65G2203/02—Control or detection
    • B65G2203/0208—Control or detection relating to the transported articles
    • B65G2203/0258—Weight of the article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
    • B65G2203/04—Detection means

Abstract

The invention discloses a sorting machine goods supply table and a goods supply method, and belongs to the technical field of package sorting. The sorting machine supply table comprises a package placing section, a weighing section, an upper package placing section and a control mechanism, wherein the package placing section, the weighing section and the upper package placing section are respectively provided with a first transmission mechanism, a second transmission mechanism and a third transmission mechanism for transmitting packages, the control mechanism controls the transmission states of the transmission mechanisms, the weighing section is further provided with the weighing mechanism, and the weighing mechanism can carry out static weighing or dynamic weighing on the packages. This sorting machine supplies goods platform through adopting syllogic structure, has shortened the length of whole supply goods platform, has reduced the area of supply goods platform, has reduced manufacturing cost, and can accelerate, slow down and at the uniform velocity transmission through making second transport mechanism and third transport mechanism to can improve the operating efficiency, and can realize the accurate butt joint of parcel and letter sorting dolly. The goods supply method shortens the time required for passing the package through the goods supply platform and improves the operation efficiency of the whole goods supply platform.

Description

Goods supply table and goods supply method of sorting machine
Technical Field
The invention relates to the technical field of package sorting, in particular to a sorting machine goods supply table and a goods supply method.
Background
Sorting packages is an important process in the logistics industry, and the sorting efficiency directly determines the transportation rate of the packages. The feeder station is a device for individually weighing a plurality of packages and introducing the packages onto a tray of a sorting machine after sizing.
The existing part feeding table is generally of a four-section structure, namely a section of dynamic scale is added in the middle of the three-section non-weighing part feeding table, and the package is conveyed on the dynamic scale at a constant speed for a period of time, so that the weighing operation of the package is completed by the dynamic scale. However, the four-section type workpiece feeding table has the defects of long total length, large occupied area, high cost, low operation efficiency and the like because of more sections in the actual use process.
Disclosure of Invention
An object of the present invention is to provide a sorting machine supply table which has a small number of stages, a short total length, a small floor space, a low cost, and a high work efficiency.
To achieve the purpose, the invention adopts the following technical scheme:
a sorter feed table comprising:
the package placing section is provided with a first transmission mechanism, and the first transmission mechanism can uniformly transmit packages along a first direction;
the weighing section is arranged at the downstream of the bag placing section, a second transmission mechanism and a weighing mechanism are arranged on the weighing section, the second transmission mechanism can uniformly speed, accelerate or decelerate and transmit the package along the first direction, and the weighing mechanism is used for carrying out static weighing or dynamic weighing on the package arranged on the second transmission mechanism;
the upper package section is arranged at the downstream of the weighing section, the tail end of the upper package section is used for being in butt joint with a sorting line of a sorting machine, a third transmission mechanism is arranged on the upper package section, and the third transmission mechanism can uniformly speed, accelerate or decelerate and transmit the package along the first direction;
the control mechanism is in communication connection with the first transmission mechanism, the second transmission mechanism and the third transmission mechanism so as to control the transmission states of the first transmission mechanism, the second transmission mechanism and the third transmission mechanism.
Preferably, the sorting machine supply table further comprises a bar code scanning mechanism, wherein the bar code scanning mechanism is arranged above the package placing section and is used for scanning bar codes on the packages; and/or
The sorter feed station also includes a volume measurement mechanism for acquiring the volume of the parcel.
Preferably, the end of the upper wrapping section is provided with a connecting inclined plane so that the first direction forms an acute angle alpha with the conveying direction of the sorting line;
the sorting machine supply table further comprises a detection mechanism, wherein the detection mechanism is arranged at the joint of the package placing section and the weighing section and used for acquiring the projection size and the center position of the package.
Another object of the present invention is to provide a method of delivering packages with high efficiency and short time required for passing through the sorting machine to deliver the packages.
To achieve the purpose, the invention adopts the following technical scheme:
a method for supplying goods for the sorting machine, the method comprising the steps of:
placing a first package on a first conveying mechanism of a package placing section, wherein the first package is conveyed at a first speed V1 along a first direction at a uniform speed;
the second conveying mechanism of the weighing section butts the first package along the first direction at a first speed V1;
the weighing mechanism of the weighing section selects a weighing mode and weighs the first package, wherein the time required for weighing is T1;
after weighing is finished, the second transmission mechanism accelerates to a second speed V2, and the first package reaches the junction of the weighing section and the package loading section after being transmitted for a period of T2;
the third conveying mechanism of the upper package section is used for butting the first package at a second speed V2 along a first direction;
after the first package is transmitted for a period of time T3 at the second speed V2, the third transmission mechanism accelerates to a third speed V3, and the first package reaches the junction of the package loading section and the sorting line after being transmitted for a period of time T4 at the third speed V3.
Preferably, the first package is placed on a first conveying mechanism of the package placing section, and the first package is conveyed at a first speed V1 along a first direction at a uniform speed, which specifically includes the following steps:
placing the first parcel on the first conveyance mechanism;
judging whether a second package exists on the weighing section or not;
if yes, the first transmission mechanism stops transmission;
if not, the first conveying mechanism continues to convey the first package at a first speed V1 along the first direction at a constant speed.
Preferably, the weighing mechanism of the weighing section selects a weighing mode, and the weighing of the first package specifically includes the following steps:
judging whether a third package exists on the upper package section or not;
if so, the second transmission mechanism is decelerated to 0, and the weighing mechanism carries out static weighing on the first package;
if not, the second conveying mechanism continues to convey at the first speed V1, and the weighing mechanism dynamically weighs the first package.
Preferably, the weighing mechanism of the weighing section selects a weighing mode, and the weighing of the first package specifically includes the following steps:
the second conveying mechanism continues to convey at a first speed V1, and the weighing mechanism dynamically weighs the first package;
judging whether a third package exists on the upper package section or not;
if yes, the second transmission mechanism is decelerated to 0;
if not, the second transmission mechanism accelerates to a second speed V2 for transmission.
Preferably, the method for supplying goods further comprises the steps of:
a detection mechanism positioned at the joint of the package placing section and the weighing section acquires the projection area and the center point of the first package;
the control mechanism selects a sorting trolley matched with the first package on a sorting line, and calculates the total time length T0 of the first package passing through the weighing section and the package loading section;
where t0=s0/V0, S0 represents the distance of the sorting trolley to the upper package section, and V0 represents the conveying speed of the sorting trolley.
Preferably, the weighing mechanism of the weighing section selects a weighing mode, and the weighing of the first package specifically includes the following steps:
judging whether the sorting trolley matched with the first package on the sorting line or not;
if yes, the second transmission mechanism continues to transmit at a first speed V1, and the weighing mechanism dynamically weighs the first package;
and if not, the second conveying mechanism is decelerated to 0, and the weighing mechanism is used for carrying out static weighing on the first package.
Preferably, the weighing mechanism of the weighing section selects a weighing mode, and the weighing of the first package specifically includes the following steps:
the second conveying mechanism continues to convey at a first speed V1, and the weighing mechanism dynamically weighs the first package;
judging whether the sorting trolley matched with the first package on the sorting line or not;
if yes, the second transmission mechanism accelerates to a second speed V2 for transmission;
if not, the second transmission mechanism decelerates to 0.
The invention has the beneficial effects that:
the invention provides a sorting machine goods supply table which comprises a bag placing section, a weighing section, a bag loading section and a control mechanism, wherein the bag placing section, the weighing section and the bag loading section are respectively provided with a first transmission mechanism, a second transmission mechanism and a third transmission mechanism for transmitting packages, the control mechanism controls the transmission states of the transmission mechanisms, so that the first transmission mechanism can transmit at a constant speed, the second transmission mechanism and the third transmission mechanism can accelerate, uniformly and slowly move, the weighing section is also provided with the weighing mechanism, and the weighing mechanism can carry out static weighing or dynamic weighing on the packages. This sorting machine supplies goods platform through adopting syllogic structure, has shortened the length of whole supply goods platform, has reduced the area of supply goods platform, has reduced manufacturing cost, and can accelerate, slow down and at the uniform velocity transmission through making second transport mechanism and third transport mechanism to can improve the operating efficiency, and can realize the accurate butt joint of parcel and letter sorting dolly.
The invention also provides a goods supply method which is used for the goods supply table of the sorting machine, and by accelerating the second conveying mechanism from the first speed V1 to the second speed V2 after weighing and accelerating the third conveying mechanism from the second speed V2 to the third speed V3 after abutting the package, the time required for the package to pass through the goods supply table is shortened, and the operation efficiency of the whole goods supply table is improved.
Drawings
Fig. 1 is a schematic view of a structure of a sorting machine supply table provided by the invention;
fig. 2 is a top view of a portion of the structure of a feed table of the sorter of the present invention;
FIG. 3 is a step diagram of a sorting method according to a first embodiment of the present invention;
fig. 4 is a step diagram of a sorting method according to a second embodiment of the present invention;
fig. 5 is a step diagram of a sorting method according to a third embodiment of the present invention;
fig. 6 is a step diagram of a sorting method according to a fourth embodiment of the present invention.
In the figure:
100. a bag placing section;
101. a package detection sensor;
200. a weighing section;
300. a packing section;
400. a detection mechanism;
500. a bar code scanning mechanism;
600. a volume measuring mechanism.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed 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. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixed or removable, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
The embodiment provides a sorting machine supply platform which is used for weighing packages one by one and transmitting the weighed packages one by one to a sorting trolley matched with the sorting trolley on a sorting line, so that the packages are packaged one by one.
As shown in fig. 1 and 2, the sorter feed station includes a bale breaking section 100, a weighing section 200, and a bale breaking section 300 connected in sequence along a first direction. The parcel placing section 100 is a place where the parcel is initially placed by the supply platform, and the parcels are placed on the parcel placing station of the parcel placing section 100 one by a manual or external device (such as a parcel placing manipulator). The packet placing section 100 includes a first rack, on which a first transmission mechanism is disposed, and the first transmission mechanism transmits along a first direction, and a packet placed on the first transmission mechanism can be synchronously transmitted to a position where the packet placing section 100 and the weighing section 200 meet. In this embodiment, the first conveying mechanism is capable of conveying the first package at a constant speed, and the conveying speed is V1. The first rack is cube-shaped, and the transmission length of the first rack is L1, where the transmission length L1 refers to the distance between the packet placing station and the junction position of the packet placing section 100 and the weighing section 200.
Optionally, the first transmission mechanism is a belt transmission mechanism, the belt transmission mechanism includes a driving motor, a transmission belt, and a driving pulley and a driven pulley which are disposed at two ends of the packet releasing section 100 along the first direction at intervals, the transmission belt is sleeved on the driving pulley and the driven pulley, and the driving motor is in transmission connection with the driving pulley. The driving pulley is rotatable under the driving of the driving motor, so that the transmission belt is driven to rotate around the driving pulley and the driven pulley, and the package placed on the transmission belt can be transmitted to the weighing section 200 along the first direction. The driving mechanism is provided with a high-precision encoder, and the moving distance of the transmission belt can be precisely controlled by using the high-precision encoder, so that the position of the package can be precisely controlled. Of course, in other embodiments, the first conveying mechanism may be a conveying roller mechanism, where a plurality of conveying rollers are disposed side by side and each independently rotate about its own axis, so as to drive the packages disposed on the conveying rollers to be conveyed in the first direction toward the weighing section 200.
Further optionally, a package detecting sensor 101 is further provided on the first conveying mechanism, and the package detecting sensor 101 is disposed on the package placing station to detect whether there is a package on the package placing station. This sorting machine supplies control mechanism of platform and parcel detection sensor 101 communication to be connected, after parcel detection sensor 101 detects to put the parcel on the station, control mechanism can control first transmission mechanism start to begin to carry out the transmission of at the uniform velocity to the parcel, and when not placing the parcel on putting the parcel station, control mechanism can control first transmission mechanism and pause, in order to reach the purpose that reduces the energy consumption.
With continued reference to fig. 1 and 2, a weighing section 200 is provided downstream of the bag section 100, the weighing section 200 including a second rack, a second transport mechanism, and a weighing mechanism. The second rack is of a cube type, the transmission length of the second rack is L2, and the second transmission mechanism is arranged on the second rack and can transmit packages at a uniform speed, acceleration or deceleration along the first direction. In this embodiment, the speed of the second conveying mechanism for conveying the package at a constant speed is V1, and the speed after acceleration is V2, and may be reduced to 0. The weighing mechanism is arranged on the second transmission mechanism and has a dynamic weighing function and a static weighing function, when the second transmission mechanism transmits the package at a constant speed V1, the weighing mechanism can dynamically weigh the package, and when the second transmission mechanism decelerates to 0, the weighing mechanism can statically weigh the package.
Alternatively, the second conveying mechanism may be the same belt conveying mechanism or conveying roller mechanism as the first conveying mechanism, and the specific structure thereof will not be described herein.
With continued reference to fig. 1 and 2, an upper package section 300 is provided downstream of the weighing section 200, with the end of the upper package section 300 being adapted to interface with a sorting line of a sorting machine for transporting packages from a supply station to sorting carts on the sorting line. The wrapping section 300 specifically includes a third rack and a third transmission mechanism disposed on the third rack, where the third rack is in a cube shape, and the transmission length of the third rack is L3, and the third transmission mechanism can uniformly speed, accelerate or decelerate to transmit the package along the first direction. The speed of the third conveying mechanism for conveying the package at a constant speed is V2, the speed after acceleration is V3, and the speed can be reduced to 0. The third conveying mechanism may be the same belt conveying mechanism or conveying roller mechanism as the first conveying mechanism, and the specific structure thereof will not be described herein.
The control mechanism of the sorting machine goods supply platform is in communication connection with the first transmission mechanism, the second transmission mechanism and the third transmission mechanism so as to control the transmission states of the first transmission mechanism, the second transmission mechanism and the third transmission mechanism. That is, the control mechanism may control the first transport mechanism to deliver packages at a constant speed or stop, and may control the second transport mechanism and the third transport mechanism to accelerate, decelerate, and transport at a constant speed, respectively.
In this embodiment, the control mechanism may be a centralized or distributed controller, for example, the controller may be a single-chip microcomputer, or may be a distributed multi-chip microcomputer, where a control program may be run in the single-chip microcomputer, so as to control the first transmission mechanism, the second transmission mechanism, and the third transmission mechanism to implement functions thereof.
Further, as shown in fig. 1 and 2, the end of the upper wrapping section 300 has a connection bevel for achieving non-perpendicular abutting of the upper wrapping section 300 with the sorting line, so that the angle between the first direction and the conveying direction of the sorting line at the abutting position is an acute angle α. The arrangement is convenient for arrange the goods supply platform and the sorting line, and the packages can be smoothly transited to the sorting line by the goods supply platform, so that the excessive speed component of the packages in the transmission direction perpendicular to the sorting line is avoided, and the packages can slide out of the sorting line.
With continued reference to fig. 1, the sorter feed station further includes a detection mechanism 400, the detection mechanism 400 being disposed at a fourth stage at the junction of the parcel stage 100 and the weighing stage 200 for acquiring the projected size and the center position of the parcel. Since the end of the upper package 300 has a connection slope, the location where the package enters the upper package 300 is different, and the transmission length L3 on the upper package 300 is also different, and a specific L3 value can be calculated by acquiring the center position of the package using the detecting mechanism 400. By obtaining the projected dimensions of the package, the time required for the package to pass through the weighing section 200 and the wrapping section 300 is facilitated to be calculated later.
Optionally, the detection mechanism 400 is a light curtain sensor, where the light curtain sensor includes an emitting end and a receiving end that are opposite from each other, the package passes between the emitting end and the receiving end, and the projection size of the package can be calculated according to the shielding length and the shielding time of the light curtain emitted from the emitting end when the package passes completely.
Further, as shown in fig. 1, the sorting machine supply table further includes a bar code scanning mechanism 500, where the bar code scanning mechanism 500 is disposed above the parcel placing section 100, and is used for scanning bar codes on the parcels, so as to obtain detailed information in the parcels, such as specific types of articles in the parcels, and the pickup addresses of the parcels, so as to control the paths of the sorting carts at a later stage. Alternatively, the barcode scanning mechanism 500 is a barcode scanning camera, and the specific structure of the barcode scanning camera is the prior art and will not be described in detail herein.
Further, with continued reference to fig. 1, the sorter feed station also includes a volume measurement mechanism 600, the volume measurement mechanism 600 being configured to acquire the volume of the parcel. The volume of parcel needs manual input on logistics system when receiving piece input information by express delivery person, when barcode scanning mechanism 500 scans the barcode on the parcel, can obtain the input volume of this parcel, through setting up volume measurement mechanism 600, can recheck the volume of parcel before sorting the parcel to judge whether the volume information that express delivery person input is correct, thereby avoid the express delivery person to deliberately type less volume and lead to the appearance of express delivery cost reduction condition. Optionally, the volume measuring mechanism 600 is a volume measuring camera, and the specific structure of the volume measuring camera is the prior art and is not described in detail herein.
The three-section structure is adopted by the sorting machine supply table, so that the length of the whole supply table is shortened, the occupied area of the supply table is reduced, and the manufacturing cost is reduced; and this sorting machine supplies goods platform through making second transport mechanism and third transport mechanism can accelerate, slow down and at the complex process such as transmission at uniform velocity to not only can improve operating efficiency, can also control the weighing mode of each parcel and control the transmission state of each parcel at weighing section 200 and last package section 300 according to the concrete time that the sorting dolly reached the supply goods platform, and then realize with the accurate butt joint of sorting dolly.
On the basis of the sorting machine feeding table, the embodiment also provides a feeding method, as shown in fig. 3, which specifically includes the following steps:
s1, placing a first package on a first conveying mechanism of the package placing section 100, and conveying the first package at a first speed V1 along a first direction at a uniform speed.
Specifically, a manual bare hand or a manual use of an external device (e.g., a bale placement robot) picks up a bale from the stacked bales and places the bale on the bale placement station of the bale section 100. To describe the flow of the delivery method and to facilitate distinguishing packages at different locations on the delivery station, the package is denoted as a first package.
Since the transfer length of the packet release section 100 is L1, the time t0=l1/V1 required for the first parcel to pass through the packet release section 100. At this time, if the length L0 of the first parcel itself is much smaller than the transmission length of the parcel section 100 by L1, the length L0 of the first parcel itself is ignored in calculating the time, and t0= (l1+l0)/V1 when the length L0 of the first parcel itself is not negligible.
S2, the second conveying mechanism of the weighing section 200 is used for abutting the first package at a first speed V1 along the first direction.
The second conveying mechanism is used for butting the first package at the same conveying speed as the first conveying mechanism, so that the stability of transition between the package placing section 100 and the weighing section 200 of the first package is improved, and the package is prevented from being toppled to damage of articles in the package and displacement of the center position.
S3, a weighing mechanism of the weighing section 200 selects a weighing mode and weighs the first package, wherein the time required for weighing is T1;
after the weighing is finished, the second conveying mechanism accelerates to a second speed V2, and the first package is conveyed for a period of time T2 and then reaches the junction of the weighing section 200 and the package loading section 300.
Specifically, with continued reference to fig. 3, the weighing mechanism of the weighing section 200 selects a weighing mode, and the weighing of the first package specifically includes the following steps:
judging whether a third package exists on the upper package section 300;
if so, the second transmission mechanism is decelerated to 0, and the weighing mechanism carries out static weighing on the first package;
if not, the second conveying mechanism continues to convey at the first speed V1, and the weighing mechanism dynamically weighs the first package.
S4, the third transmission mechanism of the upper package section 300 is used for butting the first package at a second speed V2 along the first direction;
after the first package is conveyed at the second speed V2 for a period of time T3, the third conveying mechanism accelerates to a third speed V3, and the first package reaches the junction of the package loading section 300 and the sorting line after being conveyed at the third speed V3 for a period of time T4.
According to the goods supply method, the second conveying mechanism is accelerated from the first speed V1 to the second speed V2 after weighing is finished, and the second conveying mechanism is accelerated from the second speed V2 to the third speed V3 after the third conveying mechanism is in butt joint with the packages, so that the time required for the packages to pass through the goods supply table is shortened, and the operation efficiency of the whole goods supply table is improved.
Optionally, with continued reference to fig. 3, the step S1 specifically includes the following steps:
placing the first parcel on a first transport mechanism of the parcel stage 100;
judging whether a second package exists on the weighing section 200;
if yes, the first transmission mechanism stops transmission;
if not, the first conveying mechanism continues to convey the first package at a constant speed V1 along the first direction.
The second package here is a package downstream of and closest to the first package.
Alternatively, the detection mechanism 400 may determine whether a second package is present on the weighing segment 200. Specifically, the detection structure is used for detecting the second package as a first time point, the time required for the first time point to add the second package to pass through the weighing section 200 is used as a second time point, the package detection sensor 101 is used for detecting that the first package is placed on the package placing station as a third time point, and the time required for adding the third time point to the time required for the first package to pass through the package placing section 100 is used as a fourth time point. Judging whether a second package exists on the weighing section 200 by comparing the front-to-back sequence of the second time point and the fourth time point, and if the second time point is smaller than the fourth time point, no second package exists on the weighing section 200; if the second time point is greater than or equal to the fourth time point, there is a second package on the weighing segment 200.
Alternatively, the detection mechanism 400 and a high-precision encoder provided on the drive motors of the first and second conveying mechanisms may be used to determine whether the second parcel is on the weighing segment 200. Specifically, detecting the second package as a first time point by using the detection structure, detecting the first package as a second time point by using the detection structure, and obtaining the distance S transmitted between the two time points by the second transmission mechanism by using the high-precision encoder, wherein if S is greater than the transmission length L2 of the weighing section 200, no second package exists on the weighing section 200; if S is less than or equal to the transport length L2 of the weighing segment 200, then there is a second parcel on the weighing segment 200.
Example two
The present embodiment provides a sorting machine feeding table and a feeding method, and the difference between the present embodiment and the implementation is only the selection of the symmetrical weight mode in S3 of the feeding modes.
Specifically, as shown in fig. 4, the weighing mechanism of the weighing section 200 selects a weighing mode, and the weighing of the first package specifically includes the following steps:
the second transmission mechanism continues to transmit at a first speed V1, and the weighing mechanism dynamically weighs the first package;
judging whether a third package exists on the upper package section 300;
if so, the second transmission mechanism is decelerated to 0;
if not, the second transmission mechanism accelerates to a second speed V2 for transmission.
Example III
The present embodiment provides a sorting machine feeding table and a feeding method, which are basically the same as those of the embodiment, except for the feeding method.
As shown in fig. 5, the method of supply differs in that:
the method of providing a first package at a first speed V1 in a first direction while the second conveyor of the weighing section 200 is docked, further comprises the steps of:
the detection mechanism 400 at the junction of the unwrapping section 100 and the weighing section 200 acquires the projected area and the center point of the first package.
Since the end of the upper package 300 has a connection slope, the location where the package enters the upper package 300 is different, and the distance L3 transmitted on the upper package 300 is also different, and a specific L3 value can be calculated by acquiring the center position of the package using the detecting mechanism 400. By obtaining the projected dimensions of the package, the time required for the package to pass through the weighing section 200 and the wrapping section 300 is facilitated to be calculated later.
Further, with continued reference to fig. 5, the control mechanism may further include the following steps while the detection mechanism 400 acquires the projected area and the center point of the first package:
the control mechanism selects a sorting trolley on the sorting line that matches the first parcel and calculates the total time period T0 for the first parcel to pass through the weighing section 200 and the upper parcel section 300.
Where t0=s0/V0, S0 represents the distance the sorting trolley reaches the upper package section 300, and V0 represents the conveying speed of the sorting trolley.
Further, with continued reference to fig. 5, in this embodiment, the weighing means of the weighing section 200 in the step S3 selects a weighing mode, and the step of weighing the first package specifically includes the following steps:
judging whether the sorting trolley is matched with the first package or not on the sorting line;
if yes, the second transmission mechanism continues to transmit at a first speed V1, and the weighing mechanism dynamically weighs the first package;
if not, the second conveying mechanism is decelerated to 0, and the weighing mechanism is used for carrying out static weighing on the first package.
In this embodiment, taking the sorting trolley matched with the first package on the sorting line, the weighing mechanism selects to dynamically weigh the first package as an example, and how the control mechanism plans the transmission speed and the transmission time of the second transmission mechanism and the third transmission mechanism is simply introduced:
t0=s0/V0 (1), S0, V0 are both constant values;
T0＝T1+T2+T3+T4②,T1>＝T weighing machine ,T2>＝0,T3>＝0,T4>0；
L2=t1 v1+t2 v2 (3), V1, L2 are both constant values;
l3=v2×t3+v3×t4 (4), where L3 is a constant value that can be directly obtained using the location of the center point of the first package obtained by the detection mechanism 400;
v3=v0/cos (α) (5), V0, α are both constant values;
by the above formulas and the limiting conditions, proper T1, T2, T3, T4 and V2 can be calculated by using mathematical software.
In the present embodiment, v0=2m/s; v1=1.1 m/s; v2=1.8 m/s; v3=2.3 m/s; a=30°.
Of course, in other embodiments, if the transmission step of the first package is changed, the above formula may be appropriately modified to calculate appropriate T1, T2, T3, T4, and V2 according to the new modified formula.
Example IV
The present embodiment provides a sorting machine feeding table and a feeding method, and the difference between the present embodiment and the third embodiment is only the selection of the symmetrical weight mode in S3 of the feeding modes.
As shown in fig. 6, the weighing mechanism of the weighing section 200 selects a weighing mode, and the weighing of the first package specifically includes the following steps:
the second transmission mechanism continues to transmit at a first speed V1, and the weighing mechanism dynamically weighs the first package;
judging whether the sorting trolley is matched with the first package or not on the sorting line;
if yes, the second transmission mechanism accelerates to a second speed V2 for transmission;
if not, the second transmission mechanism decelerates to 0.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims (9)

1. A sorter feed table comprising:
the package placing section (100), wherein a first transmission mechanism is arranged on the package placing section (100) and can uniformly transmit packages along a first direction;
the weighing section (200) is arranged at the downstream of the bag placing section (100), a second transmission mechanism and a weighing mechanism are arranged on the weighing section (200), the second transmission mechanism can uniformly speed, accelerate or decelerate the package along the first direction, and the weighing mechanism is used for carrying out static weighing or dynamic weighing on the package placed on the second transmission mechanism;
the upper package section (300), the upper package section (300) is arranged at the downstream of the weighing section (200), the tail end of the upper package section (300) is used for being in butt joint with a sorting line of a sorting machine, a third transmission mechanism is arranged on the upper package section (300), and the third transmission mechanism can uniformly speed, accelerate or decelerate and transmit the package along the first direction;
the control mechanism is in communication connection with the first transmission mechanism, the second transmission mechanism and the third transmission mechanism so as to control the transmission states of the first transmission mechanism, the second transmission mechanism and the third transmission mechanism;
the sorting machine supply table further comprises a detection mechanism (400), wherein the detection mechanism (400) is arranged at the joint of the package placing section (100) and the weighing section (200) and is used for acquiring the projection size and the center position of the package;
placing a first package on the first transport mechanism;
judging whether a second package exists on the weighing section (200);
judging whether the second wrapping exists on the weighing section (200) or not through the detection mechanism (400): determining whether a second package is present on the weighing section (200) by comparing the sequence of the second time point and the fourth time point, and if the second time point is smaller than the fourth time point, the weighing section (200) is free of the second package; if the second time point is greater than or equal to the fourth time point, the second package is arranged on the weighing section (200);
or, judging whether the weighing section (200) has a second package or not by the detection mechanism (400) and a high-precision encoder arranged on the driving motors of the first transmission mechanism and the second transmission mechanism: the detection mechanism (400) is used for detecting the second package as a first time point, the detection mechanism (400) is used for detecting the first package as a second time point, a high-precision encoder is used for obtaining the distance S transmitted by the second transmission mechanism between the two time points, and if S is greater than the transmission length L2 of the weighing section (200), the weighing section (200) is free of the second package; and if S is smaller than or equal to the transmission length L2 of the weighing section (200), the second package is arranged on the weighing section (200).
2. The sorter feed table of claim 1 wherein,
the sorting machine supply table further comprises a bar code scanning mechanism (500), wherein the bar code scanning mechanism (500) is arranged above the package placing section (100) and is used for scanning bar codes on packages; and/or
The sorter feed station further includes a volume measurement mechanism (600), the volume measurement mechanism (600) for acquiring the volume of the parcel.
3. The sorter feed table of claim 1 wherein,
the end of the upper wrapping section (300) is provided with a connecting inclined plane so that the first direction forms an acute angle alpha with the conveying direction of the sorting line.
4. A method of supplying goods for a sorting machine according to any one of claims 1-3, comprising the steps of:
placing a first package on a first conveying mechanism of a package placing section (100), wherein the first package is conveyed at a first speed V1 along a first direction at a uniform speed;
a second transport mechanism of the weighing section (200) butts the first parcel in a first direction at a first speed V1;
the weighing mechanism of the weighing section (200) selects a weighing mode and weighs the first package, wherein the time required for weighing is T1;
after weighing is finished, the second transmission mechanism accelerates to a second speed V2, and the first package reaches the junction of the weighing section (200) and the package loading section (300) after being transmitted for a period of T2;
a third transport mechanism of the upper wrapping section (300) butts the first wrapping at a second speed V2 along a first direction;
after the first package is transmitted for a period of time T3 at a second speed V2, the third transmission mechanism accelerates to a third speed V3, and the first package reaches the junction of the package loading section (300) and the sorting line after being transmitted for a period of time T4 at the third speed V3;
the first package is placed on a first conveying mechanism of a package placing section (100), and the first package is conveyed at a first speed V1 along a first direction at a uniform speed, and specifically comprises the following steps:
placing the first parcel on the first conveyance mechanism;
judging whether a second package exists on the weighing section (200);
judging whether the second wrapping exists on the weighing section (200) or not through the detection mechanism (400): determining whether a second package is present on the weighing section (200) by comparing the sequence of the second time point and the fourth time point, and if the second time point is smaller than the fourth time point, the weighing section (200) is free of the second package; if the second time point is greater than or equal to the fourth time point, the second package is arranged on the weighing section (200);
or, judging whether the weighing section (200) has a second package or not by the detection mechanism (400) and a high-precision encoder arranged on the driving motors of the first transmission mechanism and the second transmission mechanism: the detection mechanism (400) is used for detecting the second package as a first time point, the detection mechanism (400) is used for detecting the first package as a second time point, a high-precision encoder is used for obtaining the distance S transmitted by the second transmission mechanism between the two time points, and if S is greater than the transmission length L2 of the weighing section (200), the weighing section (200) is free of the second package; if S is less than or equal to the transmission length L2 of the weighing section (200), the second package is arranged on the weighing section (200);
if yes, the first transmission mechanism stops transmission;
and if not, the first conveying mechanism conveys the first package at a constant speed V1 along a first direction.
5. A method of supplying goods according to claim 4, wherein the weighing means of the weighing section (200) selects the weighing mode and the weighing of the first package comprises the steps of:
judging whether a third package exists on the upper package section (300);
if so, the second transmission mechanism is decelerated to 0, and the weighing mechanism carries out static weighing on the first package;
if not, the second conveying mechanism continues to convey at the first speed V1, and the weighing mechanism dynamically weighs the first package.
6. A method of supplying goods according to claim 4, wherein the weighing means of the weighing section (200) selects the weighing mode and the weighing of the first package comprises the steps of:
the second conveying mechanism continues to convey at a first speed V1, and the weighing mechanism dynamically weighs the first package;
judging whether a third package exists on the upper package section (300);
if yes, the second transmission mechanism is decelerated to 0;
if not, the second transmission mechanism accelerates to a second speed V2 for transmission.
7. The method of claim 4, further comprising the steps of:
a detection mechanism (400) positioned at the joint of the bag placing section (100) and the weighing section (200) acquires the projection area and the center point of the first package;
the control mechanism selects a sorting trolley matched with the first package on a sorting line, and calculates the total duration T0 of the first package passing through the weighing section (200) and the package loading section (300);
wherein t0=s0/V0, S0 represents the distance of the sorting trolley to the upper package section (300), and V0 represents the conveying speed of the sorting trolley.
8. The method of claim 7, wherein the weighing means of the weighing section (200) selects a weighing mode and the weighing of the first package comprises the steps of:
judging whether the sorting trolley matched with the first package on the sorting line or not;
if yes, the second transmission mechanism continues to transmit at a first speed V1, and the weighing mechanism dynamically weighs the first package;
and if not, the second conveying mechanism is decelerated to 0, and the weighing mechanism is used for carrying out static weighing on the first package.
9. The method of claim 7, wherein the weighing means of the weighing section (200) selects a weighing mode and the weighing of the first package comprises the steps of:
the second conveying mechanism continues to convey at a first speed V1, and the weighing mechanism dynamically weighs the first package;
judging whether the sorting trolley matched with the first package on the sorting line or not;
if yes, the second transmission mechanism accelerates to a second speed V2 for transmission;
if not, the second transmission mechanism decelerates to 0.
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