Cigarette auxiliary material empty tray turnover method and system

Abstract

The invention discloses a cigarette auxiliary material empty tray turnover method and system, and belongs to the technical field of cigarette production.The cigarette auxiliary material empty tray turnover method comprises the steps that an empty tray set is carried to an initialization platform, and the empty tray set is conveyed into a designated goods allocation distributed by a warehouse management system through an auxiliary material balance warehouse warehousing area reciprocating elevator and a four-way shuttle vehicle to be stored; empty tray sets stored in a specified goods allocation are conveyed to a goods placing platform of a reciprocating elevator in a warehousing area of an auxiliary material balance warehouse, then the empty tray sets are carried to an empty tray set temporary storage area distributed by a warehouse management system, and then the empty tray sets are supplied to a tray splitting machine to be subjected to tray unstacking. After the trays are disassembled, the trays are carried to a single-variety auxiliary material warehousing and receiving station or a tray distribution station of an auxiliary material tray distribution area for use by the latent AGV; and according to the empty tray warehouse returning application initiated by the material supply terminal, the empty trays at the roll-packing machine platform are conveyed to a warehouse returning area reciprocating type elevator goods placing platform. The turnover utilization rate and flexibility of the empty trays can be improved, and cyclic utilization of the empty trays is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of cigarette production, and more specifically, to a method and system for circulating empty pallets of cigarette auxiliary materials. Background Art

[0002] Cigarette auxiliary materials play a vital role in ensuring the production of cigarettes. Cigarette auxiliary materials cover a variety of materials, including cigarette paper, strip and box packaging paper, tipping paper, lining paper, packaging film, pull wire, sealing paper, frame paper, cigarette adhesive, cigarette printing ink, sealing tape and other materials, involving many suppliers. When supplying, auxiliary materials are usually placed on wooden pallets. Wooden pallets have many factors that are not conducive to the unified management of the automation system: inconsistent size and specifications, material characteristics restrictions, etc. Different suppliers have differences in production processes, quality control, packaging specifications, etc., which brings many challenges to cigarette manufacturers in auxiliary material management.

[0003] In order to unify the standards, after the arrival of single-variety auxiliary materials, they are first placed on plastic pallets of uniform specifications before being put into storage. The storage of single-variety auxiliary materials, auxiliary material pallet matching, auxiliary material balance warehouse storage, and the use of winding and packaging machines require a large number of empty pallets, which puts higher requirements on the flexibility of the auxiliary material automation system. Summary of the invention

[0004] One object of the present invention is to provide a method and system for the turnover of empty pallets of cigarette auxiliary materials, so as to solve the problem that the use of a large number of empty pallets poses a challenge to the flexibility of the auxiliary material automation system.

[0005] According to a first aspect of the present invention, there is provided a method for turnover of empty cigarette auxiliary material pallets, comprising the following steps:

[0006] Empty pallet initialization step: transport the empty pallet group to the initialization platform, and send it to the designated storage location allocated by the warehouse management system by the reciprocating elevator and four-way shuttle car in the auxiliary material balance warehouse storage area;

[0007] Empty pallet supply steps: send the empty pallet group stored in the designated cargo location to the loading platform of the reciprocating elevator in the auxiliary material balance warehouse, and then transport the empty pallet group to the temporary storage area of ​​the empty pallet group allocated by the warehouse management system, and then supply it to the pallet splitter for pallet depalletizing. After depalletizing, the latent AGV transports it to the receiving station for single-variety auxiliary materials or the pallet distribution station in the auxiliary material distribution area for use;

[0008] Empty pallet return steps: According to the empty pallet return application initiated by the material terminal, the empty pallet at the wrapping machine is sent to the reciprocating elevator loading platform in the return area.

[0009] Optionally, in the empty pallet initialization step, the empty pallet group is also transported to the appearance inspection platform for appearance inspection; the empty pallet group with abnormal appearance is returned to the initialization platform for manual sorting, and the empty pallet group that passes the inspection is sent to the auxiliary material balance warehouse entry area via the auxiliary material first-level warehouse reciprocating elevator and the auxiliary material conveying corridor.

[0010] Optionally, in the empty pallet supply step, a stock threshold of the empty pallet group temporary storage area is set, and when the number of empty pallets in the empty pallet group temporary storage area is lower than the stock threshold, the warehouse management system issues a task to replenish the empty pallet group temporary storage area.

[0011] Optionally, in the empty pallet supply step, before the empty pallet group is transported to the empty pallet group temporary storage area allocated by the warehouse management system, the empty pallet group is sent to the auxiliary material first-level warehouse outbound platform via the corridor conveyor line and the reciprocating elevator of the auxiliary material first-level warehouse, and is lowered to a preset height by the pallet transfer machine for the latent AGV to pick up.

[0012] Optionally, the steps of returning the empty pallet to the warehouse specifically include:

[0013] Generate an empty pallet return task based on the empty pallet return request initiated by the material request terminal. The empty pallet return task includes but is not limited to the machine number of the packaging workshop and the location information of the empty pallet;

[0014] The warehouse management system dispatches the forklift AGV based on the empty pallet return task to deliver the empty pallet at the wrapping machine to the empty pallet return station of the auxiliary material balance warehouse;

[0015] Empty pallets are sent to the pallet coder by the conveyor system for coding to form an empty pallet group;

[0016] The empty pallet group is transported by the conveying system to the reciprocating elevator loading platform in the return warehouse area, and then transported to the designated cargo location allocated by the warehouse management system for storage by the reciprocating elevator and four-way shuttle car in the return warehouse area.

[0017] According to a second aspect of the present invention, there is provided a cigarette auxiliary material empty pallet turnover system, comprising a forklift AGV, an appearance detection station, an initialization station, a reciprocating elevator, a four-way shuttle, a pallet transfer machine, a latent AGV, a pallet splitter, a pallet code distributor and a return station; wherein:

[0018] Forklift AGV, used to move empty pallets from the wrapping machine to the initialization station;

[0019] The appearance inspection station is used to inspect the appearance of empty pallets. Empty pallets with abnormal appearance are returned to the initialization station; empty pallets with normal appearance are sent to the auxiliary material balance warehouse storage area;

[0020] Reciprocating elevators, including reciprocating elevators for the auxiliary material primary warehouse, the auxiliary material balance warehouse inlet area and the return area, respectively arranged in the auxiliary material primary warehouse, the auxiliary material balance warehouse inlet area reciprocating elevator and the return area reciprocating elevator, are used to transport and convert empty pallet groups at different height levels;

[0021] The four-way shuttle is used to deliver the empty pallet groups in the auxiliary material balance warehouse to the designated storage location allocated by the warehouse management system;

[0022] The pallet transfer machine is used to move the empty pallet groups between the reciprocating elevator in the storage area and the designated cargo position, and between the reciprocating elevator in the return area and the designated cargo position in the auxiliary material balance warehouse;

[0023] Lurking AGV is used to transport empty pallet groups to the designated storage location of the temporary storage area of ​​empty pallet groups allocated by the warehouse management system, and then supply them to the pallet splitter for pallet depalletizing;

[0024] Pallet code extension, used to code single empty pallets into groups;

[0025] The return platform is used as a receiving platform for the empty pallets of the wrapping machine to return to the auxiliary material balance warehouse.

[0026] Optionally, the cigarette auxiliary material empty pallet turnover system further includes:

[0027] The warehouse management system is used to allocate the cargo locations of empty pallet groups in each link, and to enable the empty pallet group supply process and generate the task of replenishing the empty pallet group temporary storage area according to the inventory of the empty pallet group temporary storage area;

[0028] The warehouse control system is used to dispatch the operation of the four-way shuttle and reciprocating elevator, and control the height adjustment of the pallet transfer machine.

[0029] The cigarette auxiliary material empty pallet turnover method and system disclosed in the present invention have the following technical effects:

[0030] The appearance inspection station inspects empty pallet groups and can promptly screen out pallet groups with abnormal appearances and return them for manual sorting, helping to ensure that the empty pallets entering the system are of qualified quality.

[0031] An inventory monitoring mechanism is set up in the temporary storage area for empty pallets. When the inventory is insufficient, the warehouse management system can automatically enable the supply process and generate tasks to ensure that the supply of empty pallets meets production needs in a timely manner, avoiding production stagnation or delays due to shortage of empty pallets.

[0032] The collaborative operation of forklift AGV and lurking AGV enables the entire turnover system to achieve efficient and flexible empty pallet handling in different links and areas.

[0033] From the initialization of empty pallets online, to their supply to the production process, and then to their return to the warehouse and re-storage after use, the entire solution forms a complete closed loop of empty pallet turnover. The flow and status of empty pallets can be effectively monitored and managed, which helps to improve the overall efficiency and quality control level of empty pallet turnover.

[0034] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0036] Figure 1 A schematic flow chart of a method for turnover of empty pallets of cigarette auxiliary materials provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0037] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0038] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0039] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0040] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0041] The present invention proposes an embodiment of a method for circulating an empty pallet of cigarette auxiliary materials. Specifically, Figure 1 As shown, the following steps are included:

[0042] Empty pallet initialization steps: Manually stack empty pallets into groups of 8, and the latent AGV transports the empty pallet groups to the initialization station (i.e. the auxiliary material pallet storage station) and sends them to the designated storage location allocated by the warehouse management system by the reciprocating elevator and four-way shuttle car in the auxiliary material balance storage area;

[0043] Empty pallet supply steps: When the inventory of empty pallet group temporary storage area is less than 20%, the warehouse management system activates the empty pallet group supply process and generates the task of replenishing the empty pallet group temporary storage area. The warehouse control system dispatches the four-way shuttle and reciprocating elevator to deliver the empty pallet group stored in the designated cargo location (i.e., in the auxiliary material balance warehouse) to the delivery platform of the reciprocating elevator in the auxiliary material balance warehouse entry area, and then transports the empty pallet group to the empty pallet group temporary storage area allocated by the warehouse management system, and then supplies it to the pallet splitter for pallet depalletizing. After depalletizing, according to the system dispatch, the latent AGV transports it to the single-variety auxiliary material entry receiving station or the auxiliary material pallet distribution area for use;

[0044] Empty pallet return steps: According to the empty pallet return application initiated by the material terminal, the empty pallet at the wrapping machine is sent to the reciprocating elevator return area to release the goods at the return area.

[0045] In an embodiment of the present invention, in the empty pallet initialization step, the empty pallet group is also transported to the appearance inspection station for appearance inspection; the empty pallet group with abnormal appearance is returned to the initialization station for manual adjustment, and the empty pallet group that is normal is sent to the auxiliary material balance warehouse entry area via the auxiliary material primary warehouse reciprocating elevator and the auxiliary material conveying corridor. Appearance abnormalities include deformation, damage, dimensional deviation, etc. of the pallet. By returning the pallets with abnormal appearance for manual adjustment, equipment failures caused by pallet problems can be effectively reduced, equipment maintenance costs and downtime can be reduced, and equipment reliability and service life of the entire turnover system can be improved. The standard pallet shape helps to achieve a more regular cargo layout and storage method.

[0046] In the embodiment of the present invention, in the empty pallet supply step, a stock threshold (e.g., 20%) is set for the temporary storage area of ​​the empty pallet group. When the number of empty pallets in the temporary storage area of ​​the empty pallet group is lower than the stock threshold, the warehouse management system starts the empty pallet group supply process and issues a task to replenish the temporary storage area of ​​the empty pallet group. The warehouse management system can dynamically decide whether to start the empty pallet group supply process based on the stock threshold, and can accurately allocate resources. Warehouse management personnel can clearly grasp the reserve status of empty pallets in the temporary storage area and the replenishment rhythm.

[0047] In an embodiment of the present invention, in the empty pallet supply step, before the empty pallet group is transported to the temporary storage area for the empty pallet group assigned by the warehouse management system, the empty pallet group is sent to the outbound platform of the auxiliary material first-level warehouse via the corridor conveyor line and the reciprocating elevator of the auxiliary material first-level warehouse, and is lowered to a preset height by the pallet transfer machine for the latent AGV to pick up. The latent AGV transports the empty pallet group to the designated cargo location in the temporary storage area for the empty pallet group assigned by the warehouse management system for storage, and then supplies it to the pallet splitter for pallet destacking. It should be noted that the pallet transfer machine accurately lowers the empty pallet group at the height of the outbound platform to the appropriate position based on the preset height parameters, and the preset height matches the pickup height of the latent AGV, ensuring that the AGV can smoothly approach and pick up the pallet.

[0048] In the embodiment of the present invention, the step of returning the empty pallet to the warehouse specifically includes:

[0049] Generate an empty pallet return task based on the empty pallet return request initiated by the material request terminal. The empty pallet return task includes but is not limited to the machine number of the packaging workshop and the location information of the empty pallet;

[0050] The warehouse management system dispatches the forklift AGV based on the empty pallet return task to deliver the empty pallet at the wrapping machine to the empty pallet return station of the auxiliary material balance warehouse;

[0051] Empty pallets are sent to the pallet coding machine by the conveying system for coding. After coding, an empty pallet group is formed.

[0052] The empty pallet group is sent by the conveying system to the reciprocating elevator in the return area and the cargo release platform in the return area, and is then sent to the designated cargo location allocated by the warehouse management system for storage by the reciprocating elevator and the four-way shuttle car in the return area.

[0053] The present invention also provides another embodiment of the method for turnover of empty pallets of cigarette auxiliary materials, which specifically comprises:

[0054] Empty pallet initialization process:

[0055] Empty pallets are manually grouped into groups of 8 and placed at the docking point. The empty pallet initialization task is manually entered into the warehouse management system. The empty pallet initialization task includes information such as the pickup location and the target delivery location, which is forwarded to the warehouse control system. The warehouse control system issues instructions to the latent AGV system, which dispatches the latent AGV to move the empty pallet group from the docking point to the initialization platform (i.e., the auxiliary material pallet storage platform), and lifts it to the conveyor line via the pallet transfer machine.

[0056] The empty pallet group is transported to the appearance inspection station for appearance inspection. The empty pallet group with abnormal appearance is returned to the initialization station for manual adjustment; the empty pallet group that is normal is transported to the loading station of the auxiliary material primary warehouse. After the electronic control system detects the in-position signal, the reciprocating elevator of the auxiliary material primary warehouse rises to the auxiliary material conveying corridor, and the empty pallet group is transported to the loading station of the auxiliary material balance warehouse via the conveyor line of the corridor.

[0057] The empty pallet group is raised or lowered by the reciprocating elevator in the auxiliary material balance warehouse and transported to the designated shelf layer.

[0058] After receiving the signal that the goods have arrived at the preset point in the auxiliary material conveying corridor, the electronic control system sends an application to the warehouse control system. The warehouse control system dispatches a four-way shuttle vehicle to go to the delivery platform on the designated shelf layer of the auxiliary material balance warehouse to pick up the empty pallet group.

[0059] The electronic control system detects the arrival signal of goods at the loading platform on the designated shelf layer of the auxiliary material balance warehouse, controls the four-way shuttle to move the empty pallet group, and transports it to the designated storage location of the auxiliary material balance warehouse via the four-way shuttle track.

[0060] Empty pallet supply process:

[0061] When the inventory of the empty pallet group temporary storage area is less than 20%, the warehouse management system activates the empty pallet group supply process and generates a task to replenish the empty pallet group temporary storage area. The task includes information such as the replenishment location and the pickup location, and is forwarded to the warehouse control system.

[0062] The warehouse control system dispatches a four-way shuttle to the target pickup location of the auxiliary material balance warehouse to pick up the empty pallet group, which is then transported to the reciprocating elevator in the auxiliary material balance warehouse via the four-way shuttle track and then ascends or descends to the delivery platform of the auxiliary material balance warehouse via the elevator.

[0063] The electric control system detects the arrival signal of goods at the delivery platform of the auxiliary material balance warehouse, controls the conveyor line to reverse, and the empty pallet group is transported to the reciprocating elevator of the auxiliary material primary warehouse through the conveyor line of the auxiliary material conveying corridor. After the electric control system detects the arrival signal, the reciprocating elevator descends to the delivery platform of the auxiliary material primary warehouse. It is transported to the pallet transfer machine of the delivery platform via the conveyor line.

[0064] The electronic control system detects the arrival signal of the delivery platform of the auxiliary material primary warehouse and sends an application to the warehouse control system. The warehouse control system issues instructions to the latent AGV system to dispatch the latent AGV to the pallet transfer machine at the delivery platform to pick up the goods. The pallet transfer machine descends to the preset height, and the latent AGV extends the fork arm into the chuan-shaped hole of the pallet to move the empty pallet group.

[0065] The latent AGV system applies to the warehouse management system for releasing goods, the warehouse management system informs the warehouse control system of the unloading location information, the warehouse control system issues an unloading instruction to the latent AGV system, and the latent AGV moves the empty pallet group to the designated storage location in the empty pallet group temporary storage area for storage.

[0066] When the pallet splitter takes the last empty pallet, the electronic control system initiates an application to the warehouse management system, which generates a task to replenish the empty pallet group and forwards it to the warehouse control system. The warehouse control system issues instructions to the latent AGV system, dispatching the latent AGV to the designated cargo location to transport the empty pallet group and send it to the pallet splitter. After the pallet is split, the latent AGV will transport it to the single-variety auxiliary material storage receiving station or the auxiliary material pallet distribution area according to the system dispatch.

[0067] Empty pallet return process:

[0068] The machine operator in the wrapping workshop initiates a request for the empty pallet to be returned to the warehouse at the material request terminal.

[0069] The warehouse management system generates an empty pallet return task and forwards it to the warehouse control system. The task includes information such as the machine number of the wrapping workshop and the location of the empty pallet. The warehouse control system issues instructions to the forklift AGV system, dispatches the forklift AGV to the corresponding wrapping machine, picks up the empty pallet, and delivers it to the empty pallet return platform of the auxiliary material balance warehouse. It then applies to the warehouse control system for release. After confirmation by the system, the forklift AGV places the empty pallet on the return platform.

[0070] Empty pallets are sent to the pallet code extension by the conveyor system for coding. After coding, an empty pallet group is formed, which is transported by the conveyor line to the return area reciprocating elevator's return area cargo release platform. At the same time, the electronic control system initiates an application to the warehouse control system.

[0071] The warehouse control system dispatches a four-way shuttle to the return area reciprocating elevator's return area cargo release platform to perform the task of picking up empty pallet groups. After the electronic control system detects the arrival signal of the pickup platform, the four-way shuttle carries the empty pallet group and rises to the designated shelf layer via the return area reciprocating elevator. After the electronic control system detects the arrival signal, the four-way shuttle moves along the track and delivers the empty pallet group to the designated storage location allocated by the warehouse management system.

[0072] The present invention also provides an embodiment of an empty pallet turnover system for cigarette auxiliary materials, comprising a forklift AGV, an appearance detection platform, an initialization platform, a reciprocating elevator, a four-way shuttle, a pallet transfer machine, a latent AGV, a pallet splitter, a pallet code distributor, and a return platform; wherein:

[0073] Forklift AGV, used to move empty pallets from the wrapping machine to the initialization station;

[0074] The appearance inspection station is used to inspect the appearance of empty pallet groups. Empty pallet groups with abnormal appearance are returned to the initialization station; empty pallet groups with normal appearance are sent to the auxiliary material balance warehouse storage area;

[0075] Reciprocating elevators, including reciprocating elevators for the auxiliary material primary warehouse, the auxiliary material balance warehouse inlet area and the return area, respectively arranged in the auxiliary material primary warehouse, the auxiliary material balance warehouse inlet area reciprocating elevator and the return area reciprocating elevator, are used to transport and convert empty pallet groups at different height levels;

[0076] Among them, the platform of the first-level auxiliary material warehouse has the functions of both the outbound platform and the inbound platform. The conveyor line arranged around the platform has forward and reverse functions. When the conveyor line rotates forward, the empty pallet group can pass through the corridor conveyor line, elevator and other links, and then be sent to the storage area in the warehouse through the forward conveyor line for storage and standby; and when the conveyor line reverses, the pallets loaded with materials in the warehouse or the empty pallets that need to be transferred out can be transported out to achieve the outbound function.

[0077] The four-way shuttle is used to deliver the empty pallet groups in the auxiliary material balance warehouse to the designated storage location allocated by the warehouse management system;

[0078] The pallet transfer machine is used to move the empty pallet groups between the reciprocating elevator in the storage area and the designated cargo position, and between the reciprocating elevator in the return area and the designated cargo position in the auxiliary material balance warehouse;

[0079] Lurking AGV is used to transport empty pallet groups to the designated storage location of the temporary storage area of ​​empty pallet groups allocated by the warehouse management system, and then supply them to the pallet splitter for pallet depalletizing;

[0080] Pallet code extension, used to code single empty pallets into groups;

[0081] The return platform is used as a receiving platform for the empty pallets of the wrapping machine to return to the auxiliary material balance warehouse.

[0082] In an embodiment of the present invention, the cigarette auxiliary material empty pallet turnover system further includes:

[0083] The warehouse management system is used to allocate the cargo locations of empty pallet groups in each link, and to enable the empty pallet group supply process and generate the task of replenishing the empty pallet group temporary storage area according to the inventory of the empty pallet group temporary storage area;

[0084] The warehouse control system is used to dispatch the operation of the four-way shuttle and reciprocating elevator, and control the height adjustment of the pallet transfer machine.

[0085] The cigarette auxiliary material empty pallet turnover system of the present invention realizes the automated, intelligent and efficient turnover of empty pallets from the rolling and packaging machines to various storage areas and between different storage locations through the coordinated cooperation of various components, thereby improving the overall level of cigarette auxiliary material pallet management, reducing the error probability, and ensuring the smooth circulation of auxiliary material pallets in the cigarette production process.

[0086] The above describes in detail the structure, features and effects of the present invention based on the embodiments shown in the drawings, but the above is only a preferred embodiment of the present invention. It should be noted that the technical features involved in the above embodiments and their preferred methods can be reasonably combined and matched into a variety of equivalent schemes by those skilled in the art without departing from or changing the design ideas and technical effects of the present invention; therefore, the present invention is not limited to the scope of implementation shown in the drawings, and all changes made in accordance with the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which still do not exceed the spirit covered by the specification and drawings, should be within the protection scope of the present invention.

Claims

1. A method for turnover of empty pallets of cigarette auxiliary materials, characterized in that: The following steps are involved: Empty pallet initialization step: transport the empty pallet group to the initialization platform, and send it to the designated storage location allocated by the warehouse management system by the reciprocating elevator and four-way shuttle car in the auxiliary material balance warehouse storage area; Empty pallet supply steps: send the empty pallet group stored in the designated cargo location to the loading platform of the reciprocating elevator in the auxiliary material balance warehouse, and then transport the empty pallet group to the temporary storage area of ​​the empty pallet group allocated by the warehouse management system, and then supply it to the pallet splitter for pallet depalletizing. After depalletizing, the latent AGV transports it to the receiving station for single-variety auxiliary materials or the pallet distribution station in the auxiliary material distribution area for use; Empty pallet return steps: According to the empty pallet return application initiated by the material terminal, the empty pallet at the wrapping machine is sent to the reciprocating elevator loading platform in the return area.

2. The method for turnover of empty pallets of cigarette auxiliary materials according to claim 1, characterized in that: During the empty pallet initialization step, the empty pallet groups are also transported to the appearance inspection platform for appearance inspection; the empty pallet groups with abnormal appearance are returned to the initialization platform for manual sorting, and the empty pallet groups that are normally inspected are sent to the auxiliary material balance warehouse entry area via the auxiliary material first-level warehouse reciprocating elevator and the auxiliary material conveying corridor.

3. The method for turnover of empty pallets of cigarette auxiliary materials according to claim 1, characterized in that: In the empty pallet supply step, the inventory threshold of the empty pallet group temporary storage area is set. When the number of empty pallets in the empty pallet group temporary storage area is lower than the inventory threshold, the warehouse management system issues a task to replenish the empty pallet group temporary storage area.

4. The method for turnover of empty pallets of cigarette auxiliary materials according to claim 3, characterized in that: In the empty pallet supply step, before the empty pallet group is transported to the empty pallet group temporary storage area allocated by the warehouse management system, the empty pallet group is sent to the auxiliary material first-level warehouse outbound platform via the corridor conveyor line and the reciprocating elevator of the auxiliary material first-level warehouse, and is lowered to the preset height by the pallet transfer machine for the latent AGV to pick up.

5. The method for turnover of empty pallets of cigarette auxiliary materials according to claim 1, characterized in that: The steps for returning empty pallets to the warehouse include: Generate an empty pallet return task based on the empty pallet return request initiated by the material request terminal. The empty pallet return task includes but is not limited to the machine number of the packaging workshop and the location information of the empty pallet; The warehouse management system dispatches the forklift AGV based on the empty pallet return task to deliver the empty pallet at the wrapping machine to the empty pallet return station of the auxiliary material balance warehouse; Empty pallets are sent to the pallet coder by the conveyor system for coding to form an empty pallet group; The empty pallet group is transported by the conveying system to the reciprocating elevator loading platform in the return warehouse area, and then transported to the designated cargo location allocated by the warehouse management system for storage by the reciprocating elevator and four-way shuttle car in the return warehouse area.

6. A cigarette auxiliary material empty pallet turnover system, characterized in that: Including forklift AGV, appearance inspection platform, initialization platform, reciprocating elevator, four-way shuttle, pallet transfer machine, latent AGV, pallet splitter, pallet code distributor and return platform; Among them: Forklift AGV, used to move empty pallets from the wrapping machine to the initialization station; The appearance inspection station is used to inspect the appearance of empty pallets. Empty pallets with abnormal appearance are returned to the initialization station; empty pallets with normal appearance are sent to the auxiliary material balance warehouse storage area; Reciprocating elevators, including reciprocating elevators for the auxiliary material primary warehouse, the auxiliary material balance warehouse inlet area and the return area, respectively arranged in the auxiliary material primary warehouse, the auxiliary material balance warehouse inlet area reciprocating elevator and the return area reciprocating elevator, are used to transport and convert empty pallet groups at different height levels; The four-way shuttle is used to deliver the empty pallet groups in the auxiliary material balance warehouse to the designated storage location allocated by the warehouse management system; The pallet transfer machine is used to move the empty pallet groups between the reciprocating elevator in the storage area and the designated cargo position, and between the reciprocating elevator in the return area and the designated cargo position in the auxiliary material balance warehouse; Lurking AGV is used to transport empty pallet groups to the designated storage location of the temporary storage area of ​​empty pallet groups allocated by the warehouse management system, and then supply them to the pallet splitter for pallet depalletizing; Pallet code extension, used to code single empty pallets into groups; The return platform is used as a receiving platform for the empty pallets of the wrapping machine to return to the auxiliary material balance warehouse.

7. The cigarette auxiliary material empty pallet turnover system according to claim 6, characterized in that: Also includes: The warehouse management system is used to allocate the cargo locations of empty pallet groups in each link, and to enable the empty pallet group supply process and generate the task of replenishing the empty pallet group temporary storage area according to the inventory of the empty pallet group temporary storage area; The warehouse control system is used to dispatch the operation of the four-way shuttle and reciprocating elevator, and control the height adjustment of the pallet transfer machine.

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