Weight sensing type express sorting device and method

Abstract

The weight sensing type express sorting device comprises a first conveying belt, a plurality of transfer conveying belts are distributed on one side of the first conveying belt at intervals, a first sensor is arranged at the top of each transfer conveying belt, and a second conveying belt is arranged on the side, away from the first conveying belt, of each transfer conveying belt; an induction piece is arranged between the second conveying belt and the transfer conveying belt, a weighing conveying table is arranged at the end of the second conveying belt, and the outer end of the weighing conveying table is connected with a sorting machine; the second conveying belt comprises two annular conveying chains arranged side by side, the two annular conveying chains are connected through supporting plate sets, the multiple supporting plate sets are arranged on the annular conveying chains side by side, and each supporting plate set comprises a first supporting plate and at least one second supporting plate. The exterior of the first supporting plate is connected with a transfer conveying belt through an induction piece. According to the invention, the sorting efficiency and the sorting stability of the express can be improved, and the early-stage processing of the express is not influenced.

Description

Technical Field

[0001] The present invention relates to an express sorting device, in particular to a weight-sensing express sorting device and method. Background Art

[0002] The conventional method for sorting express deliveries is that the sorting personnel first place the express deliveries on the conveyor belt in sequence and form a certain interval between the express deliveries along the conveying direction; when the express delivery moves to the sorting position, the sorting machine scans the code on the express delivery, and then sorts and transfers the express delivery according to the express delivery information, so that each express delivery is respectively transferred to the corresponding conveying workstations. On this basis, with the improvement of the manufacturer's requirements, the current express sorting device also needs to have a weighing function, that is, the express delivery needs to be weighed during the sorting and conveying process, so as to classify the express delivery in combination with the weight of the express delivery and other express delivery information, and improve its sorting effect.

[0003] In response to the above requirements, the current processing method of manufacturers is to add a weighing conveyor table between the conveyor belt and the sorting machine, that is, first weigh the express delivery by the weighing conveyor table and enter it into the system, and then the sorting machine scans the code to obtain the express delivery information with the weight and sorts the express delivery according to this information. However, the defect of this processing method is that, on the one hand, even if the sorting personnel consciously leave an interval for the sequential conveying of the express delivery when placing the express delivery, it is very difficult to control this interval distance within the same range. As a result, when the conveyor belt transfers the express delivery to the weighing conveyor table, it is easy to occur that the conveying speed of the weighing conveyor table and the conveying speed of the express delivery do not match, and the weighing conveyor table needs to wait briefly during the weighing process.

[0004] On the other hand, due to the large difference between the express delivery conveying efficiency and the weighing efficiency, the most efficient processing method is to correspond multiple conveyor belts to one weighing conveyor table at the same time, that is, different conveyor belts alternately transport the express deliveries to the weighing conveyor table, so as to minimize the waiting time of the weighing conveyor table. However, if the conveyor belts directly transport the express deliveries to the weighing conveyor table, it will cause the conveyor belt to change from the original continuous conveying to step-by-step conveying, thus greatly reducing the manufacturer's pre-processing efficiency of the express delivery and unable to meet the manufacturer's requirements.

[0005] Therefore, the existing express sorting device has problems of low sorting efficiency and poor sorting stability when superimposing the weighing function. Summary of the Invention

[0006] The purpose of the present invention is to provide a weight-sensing express sorting device and method. It can improve the sorting efficiency and sorting stability of express deliveries without affecting the pre-processing of express deliveries.

[0007] Technical solution of the present invention: A weight-sensing express sorting device includes a first conveyor belt. A plurality of transfer conveyor belts are spaced apart on one side of the first conveyor belt. There is a swing arm between the transfer conveyor belt and the first conveyor belt. A first sensor is provided on the top of the transfer conveyor belt. A second conveyor belt is provided on the side of the transfer conveyor belt away from the first conveyor belt. There is a sensing member between the second conveyor belt and the transfer conveyor belt. A weighing conveyor platform is provided at the end of the second conveyor belt. A sorting machine is connected to the outer end of the weighing conveyor platform; the second conveyor belt includes two annular conveyor chains arranged side by side. The two annular conveyor chains are connected to each other by a support plate group. The number of support plate groups is multiple and they are arranged side by side on the annular conveyor chain. Each support plate group includes a first support plate and at least one second support plate. Frame patterns for marking express deliveries are provided on the surfaces of the first support plate and the second support plate. The outside of the first support plate is connected to the transfer conveyor belt through the sensing member. The sensing member is used to sense the position of the first support plate and control the transfer conveyor belt to convey the express delivery into the support plate group, so that each support plate group places an express delivery separately.

[0008] In the foregoing weight-sensing express sorting device, a first mounting plate is connected to some chain links of the annular conveyor chain. A support portion, a fastening portion, and a fixing portion are respectively formed on the outside of the first mounting plate. Second mounting plates are connected to the inner walls at both ends of the first support plate and the second support plate. The upper end of the second mounting plate fits with the support portion. The middle of the second mounting plate is slidably connected to the fastening portion. The lower end of the second mounting plate passes through the fastening portion and is screwed to the fixing portion.

[0009] In the foregoing weight-sensing express sorting device, a conveying frame is provided on the outside of the annular conveyor chain. The two conveying frames on both sides are connected to each other through a roller. The middle of the roller fits with the inner walls of the first support plate and the second support plate.

[0010] In the foregoing weight-sensing express sorting device, the conveying frame includes vertical plates arranged side by side on both sides of the top of the annular conveyor chain. The lower ends of the two vertical plates are connected to each other through a cross plate. An operation opening for an installation tool to extend into is provided on the cross plate.

[0011] In the foregoing weight-sensing express sorting device, an operation cavity is formed on the side of the annular conveyor chain close to the transfer conveyor belt. The sensing member is a first code reader located in the operation cavity. The first support plate extends to directly above the detection sensor at one end close to the detection sensor and forms a number for cooperating with the first code reader.

[0012] In the foregoing weight-sensing express sorting device, a detection area is formed at one end of the second conveyor belt close to the weighing conveyor platform. A second sensor is provided above the detection area. A push plate and a temporary storage box are respectively provided on both sides of the detection area. A second code reader located in the operation cavity is provided on one side of the detection area.

[0013] In the aforementioned weight-sensing express sorting device, it further includes a detection system that cooperates with the first barcode reader, the second barcode reader, and the numbers. When the support plate group moves to the second barcode reader, the second barcode reader reads the number on the support plate group and the detection system clears this number, making the support plate group corresponding to this number in an unloaded state. When the support plate group rotates back to the front end of the second conveyor belt, the first barcode reader reads the number on the support plate group. If the support plate group is in an unloaded state at this time, the transfer conveyor belt completes the transfer operation and the detection system changes this number to a loaded state. If the support plate group is in a loaded state at this time, the transfer conveyor belt does not perform the transfer operation.

[0014] An express sorting method based on the aforementioned weight-sensing express sorting device includes the following steps:

[0015] ① The first conveyor belt conveys the express packages, and at the same time, the swing arm pushes the express packages during the conveying process, so that the express packages are pushed onto the transfer conveyor belt.

[0016] ② After the first sensor detects the express package on the transfer conveyor belt, it triggers the sensing element to sense and sense the current support plate group. If there are no other express packages on the current support plate group, the transfer conveyor belt transfers the express package to the current support plate group. If there are other express packages on the current support plate group, the transfer conveyor belt does not perform the transfer operation and the sensing element senses the next support plate group until the express package on the transfer conveyor belt is transferred onto the support plate group.

[0017] ③ The second conveyor belt performs a step-by-step conveyance of each support plate group, so that the express packages on each support plate group are conveyed to the weighing conveyor platform in sequence.

[0018] ④ The weighing conveyor platform reads the code on the express package and weighs it, then conveys the express package to the sorting machine, and the sorting machine sorts and conveys the express package according to the weight and other information of the express package.

[0019] In the aforementioned express sorting method, the transfer operation of the transfer conveyor belt in step ② is completed during the step-by-step conveyance interval on both sides of the second conveyor belt, so that the second conveyor belt is in a stopped state when the transfer conveyor belt is conveying.

[0020] In the aforementioned express sorting method, the transfer operation of the transfer conveyor belt in step ② is completed synchronously with the step-by-step operation of the second conveyor belt, so that the transfer conveyor belt completes the transfer of the express package during one step-by-step conveyance operation of the second conveyor belt.

[0021] Compared with the prior art, the present invention has the following characteristics:

[0022] (1) Through the cooperation of the first conveyor belt, the transfer conveyor belt and the second conveyor belt, the second conveyor belt can correspond to multiple transfer conveyor belts simultaneously. Thus, on the one hand, each first conveyor belt can be configured with multiple transfer conveyor belts to ensure the complete conveyance of the express deliveries on the first conveyor belt. On the other hand, each first conveyor belt can also sequentially and stably transfer the express deliveries to the second conveyor belt, and use the second conveyor belt to achieve the step-by-step conveyance of the express deliveries, thereby ensuring the continuous conveyance function of each first conveyor belt and improving the conveyance efficiency of the present invention. By defining the structure of the second conveyor belt, a number of equidistant support plate groups can be formed on the second conveyor belt, so that each support plate group can correspond to one express delivery during the transfer, that is, ensuring the consistency of the interval distance of the express deliveries on the second conveyor belt. On this basis, the action beats of the transfer conveyor belt, the second conveyor belt and the weighing conveyor table can be kept consistent, and the step frequency of the second conveyor belt can be kept constant, thus eliminating the stagnant waiting time during the weighing process of the weighing conveyor table and improving the conveyance stability of the present invention;

[0023] (2) Through the support plate group composed of the first support plate and at least one second support plate, the length of each support plate group can be customized or adjusted according to user needs, thereby effectively improving the versatility of the present invention. On this basis, by defining the connection structure of the first support plate and the second support plate, the operator can disassemble and assemble the first support plate and the second support plate under the conveying rack during installation, thus facilitating the replacement of the first support plate and the second support plate by the operator in the later stage and avoiding the obstruction of the express delivery caused by the protruding screws, further improving its conveyance stability;

[0024] (3) By defining the cooperation of the sensing element and the detection system, when the transfer conveyor belt is performing the transfer action, the position and the loading state of the support plate group can also be detected by reading the number on the first support plate, and the express delivery can be transferred based on the loading state of the support plate group, thus ensuring the one-to-one correspondence between the support plate group and the express delivery;

[0025] Therefore, the present invention can improve the sorting efficiency and sorting stability of the express deliveries without affecting the pre-treatment of the express deliveries. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is the structural schematic diagram of Embodiment 1;

[0027] Figure 2 is the installation schematic diagram of the first support plate;

[0028] Figure 3 is the installation schematic diagram of the second support plate;

[0029] Figure 4 is the structural schematic diagram of Embodiment 2.

[0030] The reference numerals in the drawings are: 1 - first conveyor belt, 2 - transfer conveyor belt, 3 - swing arm, 4 - first sensor, 5 - second conveyor belt, 6 - sensing member, 7 - weighing conveyor table, 8 - endless conveyor chain, 9 - first support plate, 10 - second support plate, 11 - first mounting plate, 12 - second mounting plate, 13 - conveyor frame, 14 - idler roller, 15 - second sensor, 16 - push plate, 17 - temporary storage box, 111 - support portion, 112 - fastening portion, 113 - fixing portion, 131 - vertical plate, 132 - horizontal plate, 133 - operation opening. Detailed implementation mode

[0031] The present invention will be further described below in conjunction with the drawings and embodiments, but it shall not be used as a basis for limiting the present invention.

[0032] Embodiment 1. A weight-sensing express sorting device is configured as Figures 1-3 shown, including a first conveyor belt 1. A plurality of differential belts can be arranged at the front end of the first conveyor belt 1 as required, so that the express deliveries form intervals after passing through the differential belts. A plurality of transfer conveyor belts 2 are distributed at intervals on one side of the first conveyor belt 1. A swing arm 3 is provided between the transfer conveyor belt 2 and the first conveyor belt 1. The swing arm 3 is used to transfer the express deliveries on the first conveyor belt 1 to the transfer conveyor belt 2. A first sensor 4 is provided on the top of the transfer conveyor belt 2. A second conveyor belt 5 is provided on the side of the transfer conveyor belt 2 away from the first conveyor belt 1. A sensing member 6 is provided between the second conveyor belt 5 and the transfer conveyor belt 2. A weighing conveyor table 7 is provided at the end of the second conveyor belt 5. The outer end of the weighing conveyor table 7 is connected to a sorting machine, and the sorting machine can be a linear motor narrow-band sorting machine or other conveyor belts with sorting functions; the second conveyor belt 5 includes two endless conveyor chains 8 arranged side by side. The two ends of the endless conveyor chain 8 are connected to a driving device through sprockets. The two endless conveyor chains 8 are connected to each other through a support plate group. The number of support plate groups is multiple and they are arranged side by side on the endless conveyor chain 8. Each support plate group includes a first support plate 9 and at least one second support plate 10. Frame patterns for marking the express deliveries are provided on the surfaces of the first support plate 9 and the second support plate 10. The outside of the first support plate 9 is connected to the transfer conveyor belt 2 through the sensing member 6. The sensing member 6 is used to sense the position of the first support plate 9 and control the transfer conveyor belt 2 to convey the express delivery into the support plate group, so that each support plate group places one express delivery alone.

[0033] The first sensor 4 is used to sense the express deliveries on the transfer conveyor belt 2. If the transfer conveyor belt 2 is in an empty state, the swing arm 3 will transfer the express deliveries on the first conveyor belt 1 to the transfer conveyor belt 2; if the transfer conveyor belt 2 is in a loaded state, the swing arm 3 will not act until the express deliveries on the transfer conveyor belt 2 are transferred.

[0034] Each second conveyor belt 5 can correspond to one or more first conveyor belts 1 as needed.

[0035] A first mounting plate 11 is connected to some of the chain links of the annular conveyor chain 8. On the outer side of the first mounting plate 11, a supporting portion 111, a fastening portion 112 and a fixing portion 113 are respectively formed. The cross-sectional shape of the fastening portion 112 is C-shaped. At both ends of the inner walls of the first supporting plate 9 and the second supporting plate 10, a second mounting plate 12 is connected. The upper end of the second mounting plate 12 is in mutual fit with the supporting portion 111. The middle part of the second mounting plate 12 is slidably connected to the fastening portion 112. The lower end of the second mounting plate 12 passes through the fastening portion 112 and is screwed to the fixing portion 113.

[0036] A conveyor frame 13 is provided on the outer side of the annular conveyor chain 8. The two conveyor frames 13 are connected to each other by a roller 14. The middle part of the roller 14 is in mutual fit with the inner walls of the first supporting plate 9 and the second supporting plate 10 and is used for lifting the supporting plate group.

[0037] The conveyor frame 13 includes vertical plates 131 arranged side by side on both sides of the top of the annular conveyor chain 8. The lower ends of the two vertical plates 131 are connected to each other by a cross plate 132 located below the upper layer of the annular conveyor chain 8. The cross plate 132 is used for lifting the annular conveyor chain 8. An operation port 133 for an installation tool to extend into is provided on the cross plate 132.

[0038] An operation cavity is formed on the annular conveyor chain 8 near the transfer conveyor belt 2. The sensing member 6 is a first barcode reader located in the operation cavity. The end of the first barcode reader is detachably connected to the conveyor frame 13. The first supporting plate 9 extends to directly above the detection sensor at one end close to the detection sensor and forms a number corresponding to the first barcode reader.

[0039] A detection area is formed at one end of the second conveyor belt 5 close to the weighing conveyor table 7. A second sensor 15 is provided above the detection area. A push plate 16 and a temporary storage box 17 are respectively provided on both sides of the detection area. A second barcode reader located in the operation cavity is provided on one side of the detection area.

[0040] A detection system for cooperating with the first barcode reader, the second barcode reader and the number is further included. When the supporting plate group moves to the second barcode reader, the second barcode reader reads the number on the supporting plate group and the detection system clears the number, so that the supporting plate group corresponding to the number becomes an empty load state. When the supporting plate group rotates back to the front end of the second conveyor belt 5, the first barcode reader reads the number on the supporting plate group. If the supporting plate group is in an empty load state at this time, the transfer conveyor belt 2 completes the transfer movement and the detection system changes the number to a load state. If the supporting plate group is in a load state at this time, the transfer conveyor belt 2 does not perform the transfer movement.

[0041] On the inner side of the conveying rack 13, a decorative plate can be installed to block the gap between the vertical plate 131 and the annular conveying chain 8, and openings are left on the decorative plate for the first barcode reader and the second barcode reader to pass through.

[0042] The usage method of this weight-sensing express sorting device includes the following steps:

[0043] ① First, the express sorting personnel place the express items on the first conveyor belt 1 in sequence, and then the first conveyor belt 1 continuously conveys the express items. When the express item moves to the swing arm 3, the swing arm 3 pushes the express item during the conveying process, so that the express item is pushed onto the vacant transfer conveyor belt 2.

[0044] ② The second conveyor belt 5 maintains a step-by-step conveying state during operation. When the first sensor 4 detects the express item on the transfer conveyor belt 2, it triggers the sensing member 6, and the sensing member 6 identifies the support plate group that pauses during the interval between two step-by-step conveyances. If the number corresponding to the support plate group shows an empty load state, the transfer conveyor belt 2 transfers the express item to the support plate group within this interval time. If the number corresponding to the support plate group shows a loaded state, the transfer conveyor belt 2 does not make a transfer movement and waits for the next identification.

[0045] ③ The second conveyor belt 5 and the weighing conveyor platform 7 convey the express items at the same rhythm. When the support plate group moves to the detection area, the second sensor 15 detects the express items on the support plate group. When there are more than two express items on the support plate group, the push plate 16 pushes the express items into the temporary storage box 17 beside. When there is only one express item or no express item on the support plate group, the second conveyor belt 5 normally completes the step-by-step conveying action.

[0046] ④ After the express item enters the weighing conveyor platform 7, the weighing conveyor platform 7 weighs it and then sends the express item into the sorting machine.

[0047] Through the improvement of the express sorting device of the present invention, the express items on each first conveyor belt 1 can be transferred to the second conveyor belt 5 through the transfer conveyor belt 2, so that one second conveyor belt 5 can correspond to multiple first conveyor belts 1 at the same time, improving the conveying efficiency of the express items. At the same time, each support plate group can correspond to an express item respectively during the conveying process, so that the second conveyor belt 5 can convey the express items step by step at a specified frequency, ensuring its conveying efficiency and stability.

[0048] On this basis, the manufacturer can also adjust the number of the second support plates 10 in each support plate group according to the size of the express item, so as to further reduce the waiting time of the transfer conveyor belt while ensuring the conveying stability.

[0049] Embodiment 2. A weight-sensing express sorting device, the structure is as Figure 4As shown in the figure, it includes a first conveyor belt 1. At the front end of the first conveyor belt 1, multiple differential belts can be set as needed, so that the express deliveries form intervals after passing through the differential belts. A plurality of transfer conveyor belts 2 are distributed at intervals on one side of the first conveyor belt 1. There is a swing arm 3 between the transfer conveyor belt 2 and the first conveyor belt 1. The swing arm 3 is used to transfer the express deliveries on the first conveyor belt 1 to the transfer conveyor belt 2. A first sensor 4 is provided at the top of the transfer conveyor belt 2. A second conveyor belt 5 is provided on the side of the transfer conveyor belt 2 away from the first conveyor belt 1. A height difference is formed between the transfer conveyor belt 2 and the second conveyor belt 5. An induction member 6 is provided between the second conveyor belt 5 and the transfer conveyor belt 2. The induction member 6 is located at the front end of the transfer conveyor belt 2 along the conveying direction of the second conveyor belt 5. A weighing and conveying platform 7 is provided at the end of the second conveyor belt 5. The outer end of the weighing and conveying platform 7 is connected to a sorting machine. The sorting machine can be a linear motor narrow-band sorting machine, or other conveyor belts with sorting functions; the second conveyor belt 5 includes two annular conveying chains 8 arranged side by side. The two ends of the annular conveying chain 8 are connected to a driving device through sprockets. The two annular conveying chains 8 are connected to each other through a support plate group. The number of support plate groups is multiple and they are arranged side by side on the annular conveying chain 8. Each support plate group includes a first support plate 9 and at least one second support plate 10. The surfaces of the first support plate 9 and the second support plate 10 are provided with a frame pattern for marking the express deliveries. A baffle for intercepting the express deliveries is installed at the edge of the frame pattern. The outside of the first support plate 9 is connected to the transfer conveyor belt 2 through the induction member 6. The induction member 6 is used to sense the position of the first support plate 9 and control the transfer conveyor belt 2 to convey the express deliveries into the support plate group, so that each support plate group places one express delivery alone.

[0050] The first sensor 4 is used to sense the express deliveries on the transfer conveyor belt 2. If the transfer conveyor belt 2 is in an empty state, the express deliveries on the first conveyor belt 1 are transferred to the transfer conveyor belt 2 through the swing arm 3; if the transfer conveyor belt 2 is in a loaded state, the swing arm 3 does not move until the express deliveries on the transfer conveyor belt 2 are transferred.

[0051] Each second conveyor belt 5 can correspond to one or more first conveyor belts as needed.

[0052] The weighing and conveying platform 7 is a weighing and conveying platform with a two-way conveying function. When the weighing and conveying platform 7 detects that two or more express deliveries enter at the same time, the weighing and conveying platform 7 stops detecting and transports the express deliveries to the temporary storage box 17 on one side; when the weighing and conveying platform 7 detects that only one express delivery enters, the weighing and conveying platform 7 normally detects and transports the express delivery to the sorting machine on the other side after the detection is completed.

[0053] A first mounting plate 11 is connected to some of the link sections of the annular conveyor chain 8. On the outer side of the first mounting plate 11, a support portion 111, a fastening portion 112, and a fixing portion 113 are respectively formed. The cross-sectional shape of the fastening portion 112 is C-shaped. Second mounting plates 12 are connected to the inner walls at both ends of the first support plate 9 and the second support plate 10. The upper ends of the second mounting plates 12 are in mutual contact with the support portion 111. The middle portions of the second mounting plates 12 are slidably connected to the fastening portion 112. The lower ends of the second mounting plates 12 pass through the fastening portion 112 and are screwed to the fixing portion 113.

[0054] A conveyor frame 13 is provided on the outer side of the annular conveyor chain 8. The two conveyor frames 13 are connected to each other by a roller 14. The middle portion of the roller 14 is in mutual contact with the inner walls of the first support plate 9 and the second support plate 10 and is used to lift the support plate group.

[0055] The conveyor frame 13 includes vertical plates 131 arranged side by side on both sides of the top of the annular conveyor chain 8. The lower ends of the two vertical plates 131 are connected to each other by a cross plate 132 located below the upper layer of the annular conveyor chain 8. The cross plate 132 is used to lift the annular conveyor chain 8. An operation opening 133 for an installation tool to extend into is provided on the cross plate 132.

[0056] An operation cavity is formed on the annular conveyor chain 8 near the transfer conveyor belt 2. The sensing member 6 is a first barcode reader located in the operation cavity. The end of the first barcode reader is detachably connected to the conveyor frame 13. The first support plate 9 extends to directly above the detection sensor at one end close to the detection sensor and forms a number corresponding to the first barcode reader.

[0057] A detection area is formed at one end of the second conveyor belt 5 close to the weighing conveyor table 7. A second barcode reader located in the operation cavity is provided on one side of the detection area.

[0058] It also includes a detection system that cooperates with the first barcode reader, the second barcode reader, and the number. When the support plate group moves to the second barcode reader, the second barcode reader reads the number on the support plate group and the detection system clears the number, making the support plate group corresponding to the number in an empty load state; when the support plate group rotates back to the front end of the second conveyor belt 5, the first barcode reader reads the number on the support plate group. If the support plate group is in an empty load state at this time, the transfer conveyor belt 2 completes the rotation action and the detection system changes the number to a load state. If the support plate group is in a load state at this time, the transfer conveyor belt 2 does not perform the rotation action; when the transfer conveyor belt 2 and each support plate group are in an empty load state, the second conveyor belt 5 and the weighing conveyor table 7 remain in a stagnant waiting state.

[0059] A decorative plate can be installed inside the conveyor frame 13 to block the gap between the vertical plate 131 and the annular conveyor chain 8. Openings for the first barcode reader and the second barcode reader to pass through are left on the decorative plate.

[0060] The usage method of the weight-sensing express sorting device includes the following steps:

[0061] ① First, the express sorting personnel place the express packages in sequence on the first conveyor belt 1, and then the first conveyor belt 1 continuously conveys the express packages. When the express package moves to the swing arm 3, the swing arm 3 pushes the express package during the conveying process, so that the express package is pushed onto the vacant transfer conveyor belt 2;

[0062] ② The second conveyor belt 5 maintains a step-by-step conveying state during operation. When the first sensor 4 detects the express package on the transfer conveyor belt 2, it triggers the sensing member 6, and the sensing member 6 identifies the support plate group during the interval between two step-by-step conveyances. If the number corresponding to the support plate group shows an empty state, the transfer conveyor belt 2 transfers the express package onto the support plate group during the next step-by-step conveyance time of the support plate group. If the number corresponding to the support plate group shows a loaded state, the transfer conveyor belt 2 does not perform a transfer operation and waits for the next identification;

[0063] ③ The second conveyor belt 5 and the weighing conveyor table 7 convey the express packages at the same rhythm. When the support plate group moves to the detection area, the second barcode reader identifies the state of the support plate group. When the support plate group is in a loaded state, the second conveyor belt 5 normally completes the step-by-step conveying action. When the support plate group is in an empty state, the second conveyor belt 5 skips the current step interval and enters the next step-by-step conveyance;

[0064] ④ After the express package enters the weighing conveyor table 7, the weighing conveyor table 7 weighs it and then sends the express package into the sorting machine.

[0065] Compared with Embodiment 1, this embodiment adjusts the linkage mode among the transfer conveyor belt 2, the second conveyor belt 5 and the weighing conveyor table 7, that is, the timing of the transfer conveyor belt 2 to transfer the express package changes from the pause waiting time of the second conveyor belt 5 to the step-by-step conveying time, which enables the conveying rhythm of the second conveyor belt 5 to be directly matched with that of the weighing conveyor table 7, further improving the conveying efficiency of the weighing conveyor table 7 for the express package.

[0066] At the same time, when the support plate group moves to the detection area, the second barcode reader can identify the support plate group. If the support plate group is in an empty state at this time, the second conveyor belt 5 directly enters the next step-by-step conveying action, that is, the pause time of the second conveyor belt 5 in this state is omitted. With this action coordination, the second conveyor belt 5 can move the express package at the front end of the conveying to the rear end of the conveying fastest, and will not maintain the original step-by-step conveying frequency when there is no express package at the rear end of the second conveyor belt 5, further improving the conveying efficiency of the express package.

Claims

1. A weight-sensing express sorting device, characterized in that: The invention comprises a first conveyor belt (1), a plurality of transfer conveyor belts (2) are arranged at intervals on one side of the first conveyor belt (1), a swing arm (3) is arranged between the transfer conveyor belt (2) and the first conveyor belt (1), a first sensor (4) is arranged on the top of the transfer conveyor belt (2), a second conveyor belt (5) is arranged on the side of the transfer conveyor belt (2) away from the first conveyor belt (1), a sensing element (6) is arranged between the second conveyor belt (5) and the transfer conveyor belt (2), a weighing conveying platform (7) is arranged at the end of the second conveyor belt (5), and a sorting machine is connected to the outer end of the weighing conveying platform (7); the second conveyor belt (5) ) comprises two annular conveyor chains (8) arranged side by side, the two annular conveyor chains (8) are interconnected via a support plate group, the number of the support plate groups is plural and they are arranged side by side on the annular conveyor chain (8), each support plate group comprises a first support plate (9) and at least one second support plate (10), the outside of the first support plate (9) is connected to the transfer conveyor belt (2) via a sensor (6), the sensor (6) is used to sense the position of the first support plate (9), and control the transfer conveyor belt (2) to transport the express into the support plate group, so that each support plate group can hold a single express.

2. A weight-sensing express sorting device according to claim 1, characterized in that: A first mounting plate (11) is connected to some of the chain links of the ring conveyor chain (8); a supporting portion (111), a buckling portion (112) and a fixing portion (113) are respectively formed on the outer side of the first mounting plate (11); the inner walls of both ends of the first supporting plate (9) and the second supporting plate (10) are connected to the second mounting plate (12); the upper end of the second mounting plate (12) is in contact with the supporting portion (111); the middle part of the second mounting plate (12) is slidably connected to the buckling portion (112); and the lower end of the second mounting plate (12) passes through the buckling portion (112) and is screwed to the fixing portion (113).

3. A weight-sensing express sorting device according to claim 2, characterized in that: A conveying frame (13) is provided on the outer side of the annular conveying chain (8), and the conveying frames (13) on both sides are connected to each other via rollers (14), and the middle part of the rollers (14) is in contact with the inner walls of the first support plate (9) and the second support plate (10).

4. A weight-sensing express sorting device according to claim 3, characterized in that: The conveying frame (13) comprises vertical plates (131) arranged side by side on both sides of the top of the ring conveying chain (8), the lower ends of the vertical plates (131) on both sides are connected to each other via a horizontal plate (132), and the horizontal plate (132) is provided with an operating port (133) for inserting an installation tool.

5. A weight-sensing express sorting device according to claim 4, characterized in that: The annular conveyor chain (8) forms an operating cavity on the side close to the transfer conveyor belt (2); the sensing element (6) is a first code reader located in the operating cavity; the first support plate (9) extends from one end close to the detection sensor to just above the detection sensor and forms a number matching the first code reader.

6. A weight-sensing express sorting device according to claim 5, characterized in that: The second conveyor belt (5) forms a detection zone at one end close to the weighing conveying platform (7), a second sensor (15) is provided above the detection zone, a push plate (16) and a temporary storage box (17) are provided on both sides of the detection zone, and a second code reader located in the operating chamber is provided on one side of the detection zone.

7. A weight-sensing express sorting device according to claim 6, characterized in that: It also includes a detection system that cooperates with the first code reader, the second code reader and the number. When the support plate group moves to the second code reader, the second code reader reads the number on the support plate group and the detection system clears the number, so that the support plate group corresponding to the number becomes an unloaded state; when the support plate group rotates to the front end of the second conveyor belt (5), the first code reader reads the number on the support plate group. If the support plate group is in an unloaded state at this time, the transfer conveyor belt (2) completes the transfer action and the detection system changes the number to a loaded state. If the support plate group is in a loaded state at this time, the transfer conveyor belt (2) does not perform the transfer action.

8. A method for express sorting based on a weight-sensing express sorting device according to any one of claims 1 to 7, characterized in that: The following steps are involved: ① The first conveyor belt transports the express, and the swing arm pushes the express during the transportation process so that the express is pushed to the transfer conveyor belt; ② After the first sensor detects the express on the transfer conveyor belt, it triggers the sensing element to sense the current support plate group. If there are no other express on the current support plate group, the transfer conveyor belt will transfer the express to the current support plate group. If there are other express on the current support plate group, the transfer conveyor belt will not transfer and the sensing element will sense the next support plate group until the express on the transfer conveyor belt is transferred to the support plate group; ③ The second conveyor belt conveys each support plate group step by step, so that the express on each support plate group is transported to the weighing conveying platform in sequence; ④ The weighing and conveying platform reads the code on the express and weighs it, then conveys the express to the sorting machine, which sorts and conveys the express according to its weight and other information.

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