A tobacco inventory method

Abstract

The present application relates to the technical field of tobacco logistics, and discloses a tobacco preparation method, which vacates a double-speed chain channel before the end of sorting on the day before sorting to cope with order structure changes. The present application solves the problems of low efficiency and easy errors in the prior art.

Description

Technical Field

[0001] This invention relates to the field of tobacco logistics technology, specifically a method for preparing tobacco inventory. Background Technology

[0002] In the field of automated cigarette sorting, a high-speed stocking system is the first requirement for achieving high-speed sorting of cigarette cartons. Therefore, gravity flow racks, double-speed conveyor belts, and multi-cart systems have emerged. Among these three, gravity flow racks and double-speed conveyor belts occupy a larger area. The difference between the two lies in their power sources: the former tilts and slides down using power, while the latter lays flat and is driven by a motor. Their characteristic is that each aisle can only hold one type of cigarette; hundreds of varieties require hundreds of aisles, resulting in a large footprint. Multi-cart systems are a new type of integrated storage and sorting (stocking) system developed in recent years. Their characteristic is that they replace the stacker cranes in traditional automated storage and retrieval systems (AS / RS) with multi-level shuttle cars (one per level or one per multiple levels), enabling rapid storage and retrieval of cigarette cartons. Because they use an AS / RS configuration, they occupy a smaller area, and since the smallest storage unit is a carton, the number of brands is unlimited.

[0003] The inventory preparation system, also known as the integrated storage and sorting system, connects to the warehousing system at the top and the sorting system at the bottom.

[0004] In a prefecture-level city's logistics and distribution center, the top few brands account for over 50% of total sales, and the vast majority of these brands are local cigarette brands. Furthermore, each prefecture-level city's company carries at least a hundred brands, meaning there are a relatively large number of smaller brands. Therefore, the commonly used inventory management system for logistics centers is a high-speed chain with multiple threading mechanisms.

[0005] Analysis revealed that the reason for insufficient inventory capacity is that the lower four layers of the double-speed chain are fixed to major brands (with high sales volume). When the order structure changes, for example, if one of the layers becomes a minor brand on the sorting day, it means that the upper six layers have to handle one major brand. However, the shuttle can only carry one item at a time, which undoubtedly increases the occupancy rate of the shuttle. When the shuttles converge at the exit, the platform is short of cigarettes and the shuttles have to replenish the stock.

[0006] The existing solution is to calculate brand sales before sorting each day to ensure that the products on the lower four layers are the top eight best-selling items of the day (eight conveyor belts on both sides). If not, the cigarettes are manually removed and returned to the vertical warehouse, which is time-consuming, labor-intensive, and prone to errors. This adjustment often occurs before holidays and in January each year, and the adjustment must be reversed after the holidays, which is extremely inconvenient. Summary of the Invention

[0007] To overcome the shortcomings of existing technologies, this invention provides a method for preparing tobacco inventory, which solves the problems of low efficiency and susceptibility to errors in existing technologies.

[0008] The technical solution adopted by the present invention to solve the above problems is: A method for preparing tobacco inventory involves leaving a double-speed chain channel empty the day before sorting ends to accommodate changes in order structure.

[0009] As a preferred technical solution, the steps include: S1, after sorting is completed each day, leave one double-speed chain channel empty; S2, Brand Replenishment Determination: On the sorting day, the brands that need to be replenished are determined based on sales volume.

[0010] As a preferred technical solution, in step S1, a double-speed chain channel is vacated before the end of sorting the day before sorting. On the day of sorting, the order sales are sorted according to the day's orders, and then compared with the existing double-speed chain channel brands to determine the brands to be vacated that day.

[0011] As a preferred technical solution, in step S2, the sales volume of each brand on that day is calculated using the following method: Let the order set be... This indicates the collection of orders for the sorting day, then the brand The total sales volume for the day is expressed as:

[0012] in, Indicate brand In the total sales volume of the day, The unit is "item". This represents the sales quantity of the i-th order in the j-th brand. The unit is "item", where i represents the order number, j represents the brand number, and n represents the total number of orders.

[0013] As a preferred technical solution, in step S2, the brand The total sales volume for the day is expressed as:

[0014] in, Indicate brand In the total sales volume of the day, The unit is piece.

[0015] As a preferred technical solution, step S2, determining the brands that need restocking, includes: freeing up the double-speed chain channel, which includes the following steps: Step 1: Sort the brands corresponding to the current J speed-up channels in descending order of their daily sales volume, find the Jth ranked brand, and identify the Jth ranked brand as the target brand to be vacated; then create a set from these J brands. Where J represents the number of speed-multiplying chain channels, This represents a collection of brands consisting of J multi-speed chain channels. This indicates the existing brand portfolio of the logistics center; Step 2: Calculate the number of items to be replenished from the automated warehouse: if If the value is a multiple of 30, then the number of items to be replenished from the warehouse is: Item; if If the value is not a multiple of 30, then the number of items to be replenished in the warehouse is: ; in, Indicate brand Inventory, The unit is piece; Step 3: Assigning smoke-generating locations to multiple entry points in the vertical storage area: If... If it's a multiple of 30, then fill all the slots into the speed-up chain channel; if It's not a multiple of 30; the actual amount needed for the speed-up chain channel is not included. The extra amount added to the storage compartment is .

[0016] As a preferred technical solution, in step S2, the method for determining the brands that need to be replenished includes: determining the brands in the empty double-speed chain channels, including the following situations: Scenario 1: If the brand requiring restocking is a major single order: within Sort in descending order if [0]>3 [J], then [0] Split into two speed-double chain channels; Among them, the "super-large single brand" refers to the brand with the largest sales volume in the brand set of the double-speed chain channel, and the brand sales volume is ≥ N times that of the brand with the smallest sales volume in the brand set of the double-speed chain channel, where N≥2 and N is an integer. This represents the collection of brand sales for the Double Speed ​​Chain channel. [0] indicates the sales volume of the top-ranked DoubleSpeed ​​Chain channel brand after sales volume sorting. [J] indicates the sales volume of the Speed ​​Chain Channel brand ranked J after sales volume sorting; Scenario 2: Maintain the settings from the previous day, meeting the following conditions: Sort the brands by their daily sales in descending order, find the top J brands, and form a set. ,if Then the speed chain channel setting remains unchanged; among them, This represents the collection of brands ranked by sorting volume on that day. Scenario 3: Swap the brands of the storage racks and the double-speed chain: if Then the brands of the goods and the double-speed chain will be swapped.

[0017] As a preferred technical solution, scenario 3 includes the following situations: A) If Then Brands are sorted in descending order; the top-ranked brand is then added to any available speed-up channel. This represents the top J-1 brand group in terms of sales volume for the double-speed chain channel. This represents the collection of brands ranked first in sorting volume on that day (J-1).

[0018] As a preferred technical solution, scenario 3 includes the following situations: B) If Then perform the following steps: Step 1: Replenish the previous day's brands in the spare double-speed chain channels; Step 2: [The sentence is incomplete and requires more context.] Sort the brands in descending order of sales volume for the day, and find the Jth brand. Step 3: Mark the speed chain channel where the Jth brand is located as an outgoing-only channel; Step 4: When =0, marked as used, at the same time Brands are sorted in descending order; the top-ranked brand is then added to any available speed-up channel. This represents the top J-1 brand group in terms of sales volume for the double-speed chain channel. This indicates the collection of brands in J-1 with the highest sorting volume on that day. This indicates the inventory of brand J, which ranks first in sales volume on that day within the DoubleSpeed ​​Chain brand collection. The unit is piece. This represents the set of all brands remaining after removing the top-selling brand J from the list of brands sold on that day.

[0019] As a preferred technical solution, in step S2, the following assumptions are made: 1) There is a gap between orders from the previous day and orders for the current day; there is no continuous sorting. 2) All speed chain channels are working normally, and no single speed chain channel has an irreparable fault; 3) Orders include major brands; in this embodiment, major brands refer to the top 8 brands whose cumulative sales exceed 50% of the total sales for the day. 4) Only a set number of speed-up chain channels are available; the rest are cargo compartments. 5) The sales volume of brands with a set number of speed-up chain channels will not plummet to the point where today's sales volume is less than yesterday's inventory.

[0020] Compared with the prior art, the present invention has the following advantages: (1) This invention has high efficiency and a significantly reduced error rate; (2) The double-speed chain channel of the present invention is no longer fixed to all brands, can be adjusted every day, and does not require manual intervention, thus reducing the workload; (3) This invention improves the flexibility of multi-wear system inventory preparation, and can automatically adjust the distribution of inventory brands according to changes in order structure, thereby improving outbound capacity; (4) This invention provides a scheduling method for speed-doubled chain and multi-pass fusion, so that the two are no longer physically aggregated together, and the scheduling is done on separate islands. Attached Figure Description

[0021] Figure 1 This is a schematic diagram illustrating the steps of a tobacco preparation method according to the present invention; Figure 2 A front view of the stock preparation area; Figure 3 A top view of the stock preparation area. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0023] Example 1 like Figures 1 to 3 As shown, the present invention provides a new solution, the overall idea of ​​which is as follows: Before the sorting process ends the day before, leave one aisle empty; on the day of sorting, determine the brand to switch to based on sales volume.

[0024] Advantages: No brand switching time, can be completed automatically, applicable to holidays.

[0025] More specifically: S1: After sorting each day, leave one double-speed chain channel empty to deal with changes in order structure.

[0026] When the system is turned on, the brands are sorted according to the day's order sales and compared with the existing channel brands to determine which brands should be freed up for the day.

[0027] For example: Suppose that today, 50 units of a certain product are consumed, and 2 stacks (30 units per stack) are needed to replenish a total of 60 units. Then, 50 units are replenished to the double-speed chain, and the remaining 10 units are replenished to the 6th shelf (shelf).

[0028] S2: Brand selection for replenishment confirmed Scenario 1: Maintain the settings from the previous day If the floating channel does not change to a new brand the next day and continues with the brand from the previous day, then the six layers of cigarettes placed on the empty channel will be prioritized for disposal the next day to prevent excessive accumulation on top.

[0029] Scenario 2: Top and bottom swapped If the brand changes on the second day of the floating channel, it means that yesterday's floating brand has become a smaller brand, and no action needs to be taken. However, new brands entering the floating channel should prioritize selling any inventory they have on the six levels above them to prevent stockpiling.

[0030] Scenario 3: If a single brand accounts for a particularly large proportion, it is allowed to occupy 2 channels.

[0031] 3.2 The specific algorithm is as follows: Assumption: 1) There is a gap between the previous day's orders and the current day's orders, and there is no continuous sorting (sorting is not continued after the previous day's sorting is completed; similar to shutting down the machine after sorting the previous day and turning it on again on the current day). 2) All channels are functioning normally; no single channel is experiencing an irreparable malfunction. 3) Orders are relatively concentrated among major brands, and are not evenly distributed (the top 8 brands account for more than 50%). 4) There are only J channels (double-speed chain), the rest are cargo compartments; 5) Once the sales of the first J brands do not plummet to the point where today's sales are less than yesterday's inventory, the inventory can be cleared.

[0032] It has This represents the set of cigarette brand codes currently in the logistics center, among which... This represents the m-th brand code; set up This represents the total inventory of each brand in the inventory management system, where Indicate brand Inventory is measured in units of pieces, with 1 piece equaling 50 items; set up This indicates the total number of items sorted by each brand on that day, expressed in pieces. Indicate brand Total sorting volume, in units of items; Calculate how many units / pieces each brand sold today: Order collection This represents the set of orders for the sorting day, consisting of n orders. This represents the number of units (in items) sold for the i-th order from the j-th brand. Then, the brand... The total sales volume (units) on that day can be expressed as:

[0033] Convert the unit strip to the unit piece, and count any piece less than 1 piece as 1 piece;

[0034] 1. Clear the passageway (the day before). Step 1: Sort the current J channels in descending order of brand sales for the day, find the Jth ranked brand, which is the target brand to be vacated; (the brand with the lowest sales volume for the day is vacated after sorting). Simultaneously, group these J brands into a set. ; Step 2: Calculate the number of items to be replenished from the automated warehouse to the multi-threaded warehouse (1 pallet = 30 items). Note: Automated warehouses can only replenish entire pallets to multi-threaded warehouses. This means that existing inventory will be sold first to ensure that cigarettes are processed on a first-in, first-out basis, preventing the use of "zombie" cigarettes. if If the value is a multiple of 30, then the number of items to be replenished in the warehouse is: Item; if If the value is not a multiple of 30, then the number of items to be replenished in the warehouse is: The division expression takes the integer part.

[0035] Example 1: If there are 150 more items, then the warehouse will replenish them. Example 2: If there are 151 / 30 items, then 5 is taken as (5+1). 30 = 180 pieces; Step 3: Allocate smoke from multiple channels to the vertical storage area. If the smoke is a multiple of an integer, then allocate all the smoke to the channels. If the quantity is not an integer multiple, the channel will replenish the actual amount needed, and any excess will be added to the storage compartment.

[0036] 2. The brand of the available lane is determined (on the same day). Case 1: Extra-large single brand (Extra-large single brand refers to the brand with the largest sales volume in the brand set of the speed-up chain channel, and the brand sales volume is ≥ N times that of the brand with the smallest sales volume in the brand set of the speed-up chain channel, where N ≥ 2 and N is an integer. In this embodiment, the number of brands in the brand set of the speed-up chain is J = 8, and N is 2 or 3 times).

[0037] right Sort in descending order if [0]>3 [J], then [0] It was split into two channels.

[0038] For example: The single product of Furong Wang accounts for 40%, which can be regarded as two channels, one of which is fixed and the other is floating, and the fixed channel carries the remainder. Assume that 170 units are consumed today, and 6 stacks totaling 180 units need to be replenished. Then the fixed channel is replenished with 80 units, and the floating channel is replenished with 90 units.

[0039] Case 1 is not satisfied, test Case 2.

[0040] Case 2: Maintain the settings of the previous day, which needs to meet the following conditions: Sort by the corresponding brand sales volume of the day in descending order, find the top J brands to form a set , if , then the channel setting remains unchanged.

[0041] Case 3: Swap one brand up and down (see details Figure 2 , the stocking area includes storage slots and a double-speed chain, where the storage slots are also referred to as a multi-shuttle system, the storage slots are located above, and the double-speed chain is located below. The double-speed chain is used to store brands with large sales volume, and one double-speed chain corresponds to one brand; the storage slots are accessed by trolleys for picking and placing goods, one brand per storage slot, so the product specifications with small sales volume are placed in the storage slots.) If , it means that brands need to be swapped up and down. However, there is only one reserved channel, so only one brand can be swapped. The operations are as follows: Further subdivide the cases: A) (The brands in the first J-1 channels remain unchanged, only the last one changes) Sort the brands in descending order, find the brand ranked first to fill the empty channel, note that the cigarettes of this brand on the shelf need to be discharged preferentially.

[0042] B) (The brand of the channel emptied yesterday is still a large sales volume brand today, and among the first J-1 brands, a certain brand falls out of the top J sales volume of today; in this embodiment, the large sales volume brands refer to the top 8 brands whose cumulative sales volume exceeds 50% of the total sales volume of the day) Processing method: Step 1: The empty channel continues to replenish the brand of yesterday; Step 2: For Sort by today's sales volume in descending order, find the J-th brand; Step 3: Mark the channel where the J-th brand is located, mark it as discharge-only and no intake, with code 1; Step 4: When =0, mark 3, and simultaneously Sort the brands in descending order, find the brand ranked first to fill the empty channel.

[0043] The codes and their meanings are shown in Table 1.

[0044] Table 1. Codes and their meanings

[0045] As described above, the present invention can be implemented well.

[0046] All features disclosed in all embodiments of this specification, or steps in all methods or processes implied in the disclosure, may be combined and / or extended or replaced in any way, except for mutually exclusive features and / or steps.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Based on the technical essence of the present invention, any simple modifications, equivalent substitutions, and improvements made to the above embodiments within the spirit and principles of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A method for preparing tobacco inventory, characterized in that, Includes the following steps: S1, after sorting is completed each day, leave one double-speed chain channel empty; S2, Brand Replenishment Determination: On the sorting day, the brands that need to be replenished are determined based on sales volume; In step S1, one double-speed chain channel is vacated before the end of sorting the day before sorting. On the day of sorting, the order is sorted according to the sales volume of the day, and then compared with the existing double-speed chain channel brands to determine the brands that need to be vacated that day. In step S2, the sales volume of each brand on that day is calculated using the following method: Let the order set be... This indicates the collection of orders for the sorting day, then the brand The total sales volume for the day is expressed as: in, Indicate brand In the total sales volume of the day, The unit is "item". This represents the sales quantity of the i-th order in the j-th brand. The unit is "item", where i represents the order number, j represents the brand number, and n represents the total number of orders. In step S2, the brand The total sales volume for the day is expressed as: in, Indicate brand The total sales volume for the day is converted from the unit "strip" to the unit "piece" using the above formula, with any fraction of a piece counted as one piece. The unit is piece; In step S2, determining the brands that need restocking includes: freeing up the double-speed chain channel, which includes the following steps: Step 1: Sort the brands corresponding to the current J speed-up channels in descending order of their daily sales volume, find the Jth ranked brand, and identify the Jth ranked brand as the target brand to be vacated; then create a set from these J brands. Where J represents the number of speed-multiplying chain channels, This represents a collection of brands consisting of J multi-speed chain channels. This indicates the existing brand portfolio of the logistics center; Step 2: Calculate the number of items to be replenished from the automated warehouse: if If the value is a multiple of 30, then the number of items to be replenished from the warehouse is: Item; if If the value is not a multiple of 30, then the number of items to be replenished in the warehouse is: ； in, Indicate brand Inventory, The unit is piece; Step 3: Assigning smoke-generating locations to multiple entry points in the vertical storage area: If... If it is a multiple of 30, then all of it will be added to the speed-up chain channel; if It is not a multiple of 30; the actual amount required for the speed-up chain channel is... The extra amount added to the storage space is ; In step S2, the methods for determining the brands that need to be restocked include: determining the brands in the available double-speed chain channels, including the following situations: Scenario 1: If the brand requiring restocking is a major single brand: within Sort in descending order if [0]> [J-1], then [0] Split into two double-speed chain channels; Among them, the "super-large single brand" refers to the brand with the largest sales volume in the brand set of the double-speed chain channel, and the brand sales volume is ≥ N times that of the brand with the smallest sales volume in the brand set of the double-speed chain channel, where N≥2 and N is an integer. This represents the collection of brand sales for the Double Speed ​​Chain channel. [0] indicates the sales volume of the top-ranked DoubleSpeed ​​Chain channel brand after sales volume sorting. [J-1] represents the sales volume of the Speed ​​Chain Channel brand ranked J after sales volume sorting; Scenario 2: Maintain the settings from the previous day, meeting the following conditions: Sort the brands by their sales volume on that day in descending order, find the top J brands, and form a set from them. ,if Then the speed chain channel setting remains unchanged; among them, This represents the collection of brands ranked by sorting volume on that day. Scenario 3: Swap the brands of the storage racks and the double-speed chain: if Then the brands of the goods and the double-speed chain will be swapped.

2. The tobacco preparation method according to claim 1, characterized in that, Case 3 includes the following situations: A) If Then Brands are sorted in descending order; the top-ranked brand is then added to any available speed-up channel. This represents the top J-1 brand group in terms of sales volume for the double-speed chain channel. This represents the collection of brands in J-1 that ranked highest in sorting volume on that day. This represents the set of all brands remaining after removing the top-selling brand J from the list of brands sold on that day.

3. The method for preparing tobacco inventory according to claim 1, characterized in that, Case 3 includes the following situations: B) If Then perform the following steps: Step 1: Replenish the previous day's brands in the spare double-speed chain channels; Step 2: [The sentence is incomplete and requires more context.] Sort the brands in descending order of sales volume for the day, and find the Jth brand. Step 3: Mark the speed chain channel where the Jth brand is located as an outgoing-only channel; Step 4: When =0, marked as used, at the same time Brands are sorted in descending order; the top-ranked brand is then added to any available speed-up channel. This represents the top J-1 brand group in terms of sales volume for the double-speed chain channel. This represents the collection of brands in J-1 that ranked highest in sorting volume on that day. This indicates the inventory of brand J, which ranks first in sales volume on that day within the DoubleSpeed ​​Chain brand collection. The unit is piece. This represents the set of all brands remaining after removing the top-selling brand J from the list of brands sold on that day.

4. A method for preparing tobacco inventory according to any one of claims 1 to 3, characterized in that, In step S2, the following assumptions are made: 1) There is a gap between orders from the previous day and orders for the current day; there is no continuous sorting. 2) All speed chain channels are working normally, and no single speed chain channel has an irreparable fault; 3) Orders include major brands; major brands refer to the top 8 brands whose cumulative sales exceed 50% of the total sales for the day. 4) Only a set number of speed-up chain channels are available; the rest are cargo compartments. 5) The sales volume of brands with a set number of speed-up chain channels will not plummet to the point where today's sales volume is less than yesterday's inventory.

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