Central Feeding System and Feeding Control Method Based on Optimization of Feeding Path

Abstract

The present invention discloses a central feeding system and a feeding control method based on feeding path optimization, comprising a plastic pellet transport module, a plastic hot melt machine, and a plastic pellet forming machine. The plastic hot melt machine is connected to the plastic pellet transport module, and the plastic pellet transport module is connected to the plastic pellet forming machine. The plastic pellet transport module comprises a transport track, a feed track, and a transport crawler. The transport track connects adjacent plastic pellet forming machines to each other, and the plastic pellet forming machine closest to the plastic hot melt machine is connected via the feed track. The plastic pellet transport module is used to transport the formed plastic pellets, the plastic hot melt machine is used to centrally process and accept the formed plastic pellets, the plastic pellet forming machine is used to form plastic pellets, and the transport track is used to enable the plastic pellet transport vehicle to run above it. The present invention has the characteristics of flexible adaptability.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic particle processing, and specifically to a central feeding system and a feeding control method based on optimized feeding paths. Background Art

[0002] The raw material of plastics is mainly petroleum. After petroleum is formed, through fractional distillation, cracking, etc., various olefins, aromatics, etc. can be obtained. For example, ethylene, after polymerization, is plastic particles. During the process of processing plastic particles into plastic products, they need to be transported to a plastic hot melt machine for proportioning, mixing, and hot melting, and then the processing of plastic products begins.

[0003] There are two ways to transport plastic particles after forming: track transportation and track belt transportation. Each method has its own advantages and disadvantages. Track belt transportation can achieve a faster and more uniform transportation effect when the proportion of plastic particles is not high. However, due to the limitation of the width of the track belt itself, the weight of plastic particles placed above it should not be too much, otherwise the excess plastic particles will be spilled on the ground; the transportation track has the characteristic of large capacity, but the feeding is uneven, which means that the plastic particle processing often needs to stop or pile up materials, and it requires a high amount of energy to retrieve the plastic particle transport vehicle.

[0004] The prior art usually uses one of the two methods to supply materials to the plastic hot melt machine. The design of the transport track belt and the planning of the plastic particle transport vehicle are carried out according to the pre-estimated proportion of plastic particles. The flexibility to respond is not good. Since the demand for the finished products formed by each hot melting of the plastic hot melt machine is different, the proportion of plastic particles on the transport track belt often fluctuates, and there are often problems such as the accumulation of a certain type of plastic particles that cannot be transported or the large-scale idle of the transport track belt and the transport vehicle. Therefore, it is very necessary to design a central feeding system and a feeding control method based on optimized feeding paths with good flexibility to respond. Summary of the Invention

[0005] The purpose of the present invention is to provide a central feeding system and a feeding control method based on optimized feeding paths to solve the problems raised in the above background art.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: A central feeding system and a feeding control method based on optimized feeding paths, including a plastic particle transport module, a plastic hot melt machine, and a plastic particle forming machine. The plastic hot melt machine is connected to the plastic particle transport module, and the plastic particle transport module is connected to the plastic particle forming machine. The plastic particle transport module includes a transport track, a blanking track, and a transport track belt. The transport track connects adjacent plastic particle forming machines to each other, and the plastic particle forming machine closest to the plastic hot melt machine is connected through the blanking track;

[0007] The plastic pellet transport module is used to transport the molded plastic pellets, the plastic hot melt machine is used to centrally process and undertake the molded plastic pellets, the plastic pellet molding machine is used to mold plastic pellets, the transport track is used to allow the plastic pellet transport vehicle to run above it, the unloading track is used to provide a path for unloading plastic pellets, and the transport crawler is used to transport plastic pellets in a crawler manner.

[0008] According to the above technical solution, the plastic particle transportation module includes a plastic particle weighing unit, a crawler transportation control module, a rail transportation control module, a rail transportation activation module, a mechanical automatic grab, and a plastic particle distribution module. The rail transportation activation module and the mechanical automatic grab are electrically connected to the rail transportation control module respectively, and the mechanical automatic grab is electrically connected to the plastic particle distribution module;

[0009] The plastic pellet weighing unit is used to weigh the weight of the plastic pellets above the crawler transport area, the crawler transport control module is used to control the crawler transport of molded plastic pellets, the track transport control module is used to control the plastic pellet transport vehicle on the transport track to transport the molded plastic pellets, the track transport activation module is used to activate the operation of the plastic pellet transport vehicle, the mechanical automatic grab is used to transport and feed the newly molded plastic pellets in the plastic pellet molding machine, and the plastic pellet distribution module is used to distribute the plastic pellet transportation working mode according to the transport weight of each transport crawler.

[0010] According to the above technical solution, the feeding control method of the system is divided into the following specific steps:

[0011] S0. Establish each plastic pellet forming machine, and arrange the transport track, unloading track, and transport crawler of the plastic pellet transport module between the plastic pellet forming machine and the plastic hot melt machine;

[0012] S1. Use the crawler transport control module to start the transport crawler, use the mechanical automatic grab to place the formed plastic particles on the transport crawler, and use the plastic particle weighing unit to weigh the weight of the plastic particles above the weighing area above the crawler in real time. At this time, the track transport control module is in a static state;

[0013] S2. When the load exceeds the rated load above the weighing area, the rail transport control module is started to sort the plastic particles above the transport track, and the excess plastic particles are put into the plastic particle transport vehicle by a mechanical automatic grab for redistribution;

[0014] S3. When the excess load above the weighing area of all transport crawlers exceeds the rated excess load, the rail transport control module is started to make the plastic pellet transport vehicle run to the unloading track for rail transport unloading;

[0015] S4. Transport the plastic particles exceeding the rated excess load to other transport tracks that have not exceeded the rated excess load, and allocate the plastic particle transportation work according to their respective rated excess loads, so that multiple transport tracks carry out collaborative transportation and transport the plastic particles to the plastic hot melt machine.

[0016] According to the above technical solution, in the above step S4, the method for allocating the plastic particle transportation work is as follows:

[0017] S4-1. When the track transportation control module of the plastic particle transportation module is not working, that is, when there are no plastic particles above the weighing area, the transport track it controls fully undertakes the plastic particle transportation work of other transport tracks;

[0018] S4-2. When the track transportation control module of the plastic particle transportation module starts to work, that is, when plastic particles start to appear above the weighing area, the proportion of the plastic particle transportation work it undertakes from other transport tracks is reduced. The specific allocation method is that the transportation weight of the excess plastic particle transportation work undertaken in real time is reduced in direct proportion to the weight approaching the rated excess load until the rated excess load is reached and the remaining transportation weight is zero.

[0019] According to the above technical solution, in the above step S4, the specific allocation formula for the plastic particle transportation work is:

[0020]

[0021] Where A is the transportation weight of the plastic particle work of other transport tracks undertaken by this transport track in real time, A0 is the upper limit of the transportation weight of this transport track, A1 is the weight of the plastic particles formed by the plastic particle molding machine corresponding to this transport track, s0 is the rated excess load, and s1 is the excess load of other transport tracks undertaken in real time.

[0022] According to the above technical solution, it further includes a plastic particle transport vehicle planning module. The plastic particle transport vehicle planning module includes a total transport volume statistics module, a plastic particle transport vehicle load statistics module, a redundancy judgment module, and a plastic particle transport vehicle allocation module. The total transport volume statistics module is electrically connected to the plastic particle transport vehicle load statistics module and the redundancy judgment module, and the plastic particle weighing unit is electrically connected to the total transport volume statistics module;

[0023] The total transport volume statistics module is used to count the weight of plastic particles that need to be transported by rail. The plastic particle transport vehicle load statistics module is used to count the load of each plastic particle transport vehicle. The redundancy judgment module is used to judge whether the current number of transport vehicles is redundant. The plastic particle transport vehicle allocation module is used to allocate the quantity and load of the plastic particle transport vehicles corresponding to each plastic particle molding point.

[0024] According to the above technical solution, the specific method for the plastic particle transport vehicle planning module to calculate the optimal solution of the number of plastic particle transport vehicles of the rail transport control module is as follows:

[0025] S5. The total load W required by all rail transport control modules in the plastic particle forming area. There are a total of q plastic particle transport vehicles on the transport tracks in this area, and the total load that all plastic particle transport vehicles can carry is When At this time, there are redundant plastic particle transport vehicles, and the excess plastic particle transport vehicles are parked at the temporary parking point. When At this time, the number of plastic particle transport vehicles is just sufficient. When At this time, there is a shortage of plastic particle transport vehicles. First, it is ensured that each plastic particle forming machine has a certain number of plastic particle transport vehicles to maintain basic operation, and then the remaining plastic particle transport vehicles are allocated.

[0026] According to the above technical solution, in the above step S5, the optimal solution y of the number of plastic particle transport vehicles of a certain rail transport control module at this time is:

[0027]

[0028] Where q is the number of plastic particle transport vehicles on all transport tracks, p is the total number of plastic particle forming machines in the plastic particle forming area, x is the number of plastic particle transport vehicles that at least need to be equipped for the operation of a single plastic particle forming machine, and the total plastic particle supply of a certain plastic particle forming machine is A j .

[0029] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The present invention adopts a combination of rail transport and track belt transport, so that the plastic particle transport path is changed from a single round-trip transport and track belt transport to dynamic adjustment according to the actual situation. When transporting a small amount of plastic particles, track belt transport is used. When the plastic particles of a certain plastic particle forming machine exceed the rated standard, the excess plastic particles can be transported to other track belt transport points by plastic particle transport vehicles for collaborative track belt transport, making full use of the redundant idle track belt transport capacity at each plastic particle forming point, so that the plastic particle transport is carried out in the smoothest way of track belt transport to the greatest extent and will not exceed the rated load of the track belt transport. Rail transport is only adopted when each track belt transport is saturated, to cope with the problem of a sudden sharp increase in the forming volume of a certain plastic particle forming machine during a certain batch of production, saving energy to the greatest extent, and avoiding the problems of accumulation of a certain type of plastic particles that cannot be transported or a large number of idle track belts and transport vehicles. Description of the Drawings

[0030] The accompanying drawings are used to provide a further understanding of the present invention and form a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the accompanying drawings:

[0031] Figure 1 is the feeding principle of the present invention Figure 1 ;

[0032] Figure 2 is the feeding principle of the present invention Figure 2 ;

[0033] Figure 3 is a schematic diagram of the overall module structure of the present invention. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] Please refer to Figures 1-3 , the present invention provides a technical solution: a central feeding system and a feeding control method based on the optimization of the feeding path, including a plastic particle transportation module, a plastic melting machine, and a plastic particle molding machine. The plastic melting machine is connected to the plastic particle transportation module, and the plastic particle transportation module is connected to the plastic particle molding machine. The plastic particle transportation module includes a transportation track, a blanking track, and a transportation track belt. The transportation track connects adjacent plastic particle molding machines to each other, and the plastic particle molding machine closest to the plastic melting machine is connected through the blanking track;

[0036] The plastic particle transportation module is used to transport the formed plastic particles. The plastic melting machine is used to centrally process and receive the formed plastic particles. The plastic particle molding machine is used to form plastic particles. The transportation track is used to allow the plastic particle transport vehicle to run above it. The blanking track is used to provide a path for the blanking of plastic particles. The transportation track belt is used to transport plastic particles in a track belt manner. This feeding system adopts a point-to-point connection method, and there is no need to set up a blanking track for each plastic particle molding machine. During normal times, the transportation track belt is used for transportation, and during overload situations, the track transportation is used, so that the two transportation methods can give full play to their respective advantages;

[0037] The plastic particle transportation module includes a plastic particle weighing unit, a track belt transportation control module, a track transportation control module, a track transportation activation module, a mechanical automatic grab, and a plastic particle distribution module. The track transportation activation module and the mechanical automatic grab are respectively electrically connected to the track transportation control module, and the mechanical automatic grab is electrically connected to the plastic particle distribution module;

[0038] The plastic particle weighing unit is used to weigh the weight of plastic particles above the crawler transportation area. The crawler transportation control module is used to control the plastic particles after forming by crawler transportation. The rail transportation control module is used to control the plastic particle transport vehicle on the transport rail to transport the formed plastic particles. The rail transportation activation module is used to activate the work of the plastic particle transport vehicle. The mechanical automatic grab is used to transport and supply the just-formed plastic particles in the plastic particle molding machine. The plastic particle distribution module is used to distribute the plastic particle transportation working mode according to the transportation weight of each transport crawler;

[0039] The feeding control method of this system is divided into the following specific steps:

[0040] S0. Establish each plastic particle molding machine, and arrange the transport rail, blanking rail, and transport crawler of the plastic particle transport module between the plastic particle molding machine and the plastic hot melt machine;

[0041] S1. Use the crawler transportation control module to start the transport crawler, use the mechanical automatic grab to place the formed plastic particles on the transport crawler, and use the plastic particle weighing unit to weigh the weight of the plastic particles above the weighing area above the crawler in real time. At this time, the rail transportation control module is in a static state;

[0042] S2. When there is a situation of exceeding the rated excess load above the weighing area, start the rail transportation control module, sort the plastic particles above the transport crawler, and put the excess plastic particles into the plastic particle transport vehicle by the mechanical automatic grab for redistribution;

[0043] S3. When the weighing areas of all transport crawlers exceed the rated excess load situation, start the rail transportation control module to make the plastic particle transport vehicle run to the blanking rail for rail transportation blanking;

[0044] It should be noted that the moving track of the plastic particle transport vehicle is in a clockwise or counterclockwise direction along a certain direction to avoid the plastic particle transport vehicles colliding with each other, forming an orderly transport path. After the empty plastic particle transport vehicle gets the plastic particles, it runs to the blanking rail for blanking;

[0045] S4. Transport the plastic particles exceeding the rated excess load to other transport tracks that have not exceeded the rated excess load, and allocate the plastic particle transportation work according to their respective rated excess loads, so that multiple transport tracks carry out collaborative transportation and transport the plastic particles to the plastic hot melt machine. Through the collaborative transportation method, the idle transportation capacity of each transport track can be fully utilized. This transportation process is flexibly adjusted according to the timely plastic particle forming situation, with strong adaptability, and there will be no problem of accumulation of a certain type of plastic particles that cannot be transported or a large number of transport tracks and transport vehicles being idle.

[0046] In the above step S4, the method for allocating the plastic particle transportation work is as follows:

[0047] S4-1. When the track transportation control module of this plastic particle transportation module is not working, that is, when there are no plastic particles above the weighing area, the transport track it controls fully undertakes the plastic particle transportation work of other transport tracks.

[0048] S4-2. When the track transportation control module of this plastic particle transportation module starts to work, that is, when plastic particles start to appear above the weighing area, the proportion of the plastic particle transportation work it undertakes from other transport tracks is reduced. The specific allocation method is that the transportation weight of the excess plastic particle transportation work it undertakes in real time decreases in direct proportion to the weight approaching the rated excess load until it reaches the rated excess load, and the remaining transportation weight is zero.

[0049] In the above step S4, the specific allocation formula for the plastic particle transportation work is:

[0050]

[0051] Where A is the transportation weight of this transport track undertaking the plastic particle work of other transport tracks in real time, A0 is the upper limit of the transportation weight of this transport track, A1 is the weight of the plastic particles formed by the corresponding plastic particle forming machine transported by this transport track, s0 is the rated excess load, and s1 is the excess load of this transport track undertaking other transport tracks in real time, so that the plastic particle transportation is carried out in the smoothest way of track transportation to the greatest extent and will not exceed the rated load of the track transportation, improving the service life of the track. Only when each track transportation is saturated will rail transportation be used to deal with the sudden explosion of plastic forming volume of a certain plastic particle forming machine in a certain process, saving energy to the greatest extent.

[0052] It also includes a plastic particle transport vehicle planning module. The plastic particle transport vehicle planning module includes a total transport volume statistics module, a plastic particle transport vehicle load statistics module, a redundancy judgment module, and a plastic particle transport vehicle allocation module. The total transport volume statistics module is electrically connected to the plastic particle transport vehicle load statistics module and the redundancy judgment module, and the plastic particle weighing unit is electrically connected to the total transport volume statistics module.

[0053] The total transportation volume statistics module is used to count the weight of plastic pellets that need to rely on rail transportation. The load capacity statistics module of plastic pellet transport vehicles is used to count the load capacity of each plastic pellet transport vehicle. The redundancy judgment module is used to judge whether the current number of transport vehicles is redundant. The plastic pellet transport vehicle allocation module is used to allocate the quantity and load capacity of plastic pellet transport vehicles corresponding to each plastic pellet forming point;

[0054] The specific method for the plastic pellet transport vehicle planning module to calculate the optimal solution of the number of plastic pellet transport vehicles of this rail transportation control module is as follows:

[0055] S5. When all the transport tracks are full, the total load W required by all the rail transportation control modules in this plastic pellet forming area. There are q plastic pellet transport vehicles in total on the transport tracks in this area. The total load that all plastic pellet transport vehicles can carry is When At this time, the plastic pellet transport vehicles are redundant. Park the excess plastic pellet transport vehicles at the temporary parking point. When At this time, the number of plastic pellet transport vehicles is just sufficient. When At this time, the plastic pellet transport vehicles are in short supply. First, ensure that each plastic pellet forming machine has a certain number of plastic pellet transport vehicles to maintain basic operation, and then allocate the remaining plastic pellet transport vehicles to achieve the effect of dynamic allocation according to the urgency of the situation;

[0056] In the above step S5, the optimal solution y of the number of plastic pellet transport vehicles of a certain rail transportation control module at this time is:

[0057] j = 1 to p. After ensuring the basic requirements of each collection point when the number of transport vehicles is insufficient, allocate according to the plastic pellet ratio to avoid the problem of material stacking to the greatest extent;

[0058] Where q is the number of plastic pellet transport vehicles on all transport tracks, p is the total number of plastic pellet forming machines in this plastic pellet forming area, x is the number of plastic pellet transport vehicles that at least need to be equipped for the operation of a single plastic pellet forming machine, and the total plastic pellet supply volume of a certain plastic pellet forming machine is A j ;

[0059] Embodiment 1: In order to improve the service life of plastic pellet transport vehicles to a greater extent, when At this time, the plastic pellet transport vehicles are sufficient, then allocate according to the demand of the express rail transportation control module. The average load capacity of the plastic pellet transport vehicles is

[0060]

[0061] At this time, the optimal solution y for the number of plastic pellet transport vehicles of a certain rail transportation control module is

[0062]

[0063] At this time, the number of plastic pellet transport vehicles required for all rail transportation control modules is

[0064] So that each transport vehicle can distribute the weight as evenly as possible, avoiding damage caused by excessive use.

[0065] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0066] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A central feeding system based on optimized feeding paths, characterized in that: It includes a plastic particle transportation module, a plastic melting machine, and a plastic particle molding machine. The plastic melting machine is connected to the plastic particle transportation module, and the plastic particle transportation module is connected to the plastic particle molding machine. The plastic particle transportation module includes a transportation track, a blanking track, and a transportation track belt. The transportation track connects adjacent plastic particle molding machines to each other, and the plastic particle molding machine closest to the plastic melting machine is connected through the blanking track; The plastic particle transportation module is used to transport the formed plastic particles. The plastic melting machine is used to centrally process and receive the formed plastic particles. The plastic particle molding machine is used to mold plastic particles. The transportation track is used to allow the plastic particle transport vehicle to run above it. The blanking track is used to provide a path for the blanking of plastic particles. The transportation track belt is used to transport plastic particles in a track belt manner; The plastic particle transportation module includes a plastic particle weighing unit, a track belt transportation control module, a track transportation control module, a track transportation activation module, a mechanical automatic grab, and a plastic particle distribution module. The track transportation activation module and the mechanical automatic grab are respectively electrically connected to the track transportation control module, and the mechanical automatic grab is electrically connected to the plastic particle distribution module; The plastic particle weighing unit is used to weigh the weight of plastic particles above the track belt transportation area. The track belt transportation control module is used to control the transportation of the formed plastic particles by the track belt. The track transportation control module is used to control the plastic particle transport vehicle on the transportation track to transport the formed plastic particles. The track transportation activation module is used to activate the work of the plastic particle transport vehicle. The mechanical automatic grab is used to transport and supply the newly formed plastic particles in the plastic particle molding machine. The plastic particle distribution module is used to allocate the plastic particle transportation working mode according to the transportation weight of each transportation track belt; The feeding control method of this system is divided into the following specific steps: S0. Establish each plastic particle molding machine, and arrange the transportation track, blanking track, and transportation track belt of the plastic particle transportation module between the plastic particle molding machine and the plastic melting machine; S1. Use the track belt transportation control module to start the transportation track belt, use the mechanical automatic grab to place the formed plastic particles on the transportation track belt, and use the plastic particle weighing unit to weigh the weight of the plastic particles above the weighing area above the track belt in real time. At this time, the track transportation control module is in a static state; S2. When there is a situation where the load above the weighing area exceeds the rated excess load, start the track transportation control module, sort the plastic particles above the transportation track belt, and use the mechanical automatic grab to put the excess plastic particles into the plastic particle transport vehicle for redistribution; S3. When the load above the weighing area of all transportation track belts exceeds the rated excess load, start the track transportation control module. After the plastic particle transport vehicle is full of plastic particles, make the plastic particle transport vehicle run to the blanking track for track transportation and blanking; S4. Transport the plastic pellets exceeding the rated excess load to other transport tracks that have not exceeded the rated excess load, and allocate the plastic pellet transportation work according to their respective rated excess loads, so that multiple transport tracks carry out collaborative transportation and transport the plastic pellets to the plastic hot melt machine.

2. The central feeding system based on the optimized feeding path according to claim 1, wherein: In the above step S4, the method for allocating the plastic pellet transportation work is as follows: S4-1. When the track transportation control module of the plastic pellet transportation module is not working, that is, when there are no plastic pellets above the weighing area, the transport track it controls fully undertakes the plastic pellet transportation work of other transport tracks; S4-2. When the track transportation control module of the plastic pellet transportation module starts to work, that is, when plastic pellets start to appear above the weighing area, the proportion of its undertaking the plastic pellet transportation work of other transport tracks is reduced. The specific allocation method is that the transported weight of the excess plastic pellet transportation work undertaken in real time decreases in direct proportion to the weight of approaching the rated excess load until the rated excess load is reached and the remaining transported weight is zero.

3. The central material supply system based on the optimized feeding path according to claim 2, characterized in that: It further includes a plastic pellet transport vehicle planning module. The plastic pellet transport vehicle planning module includes a total transport volume statistics module, a plastic pellet transport vehicle load statistics module, a redundancy judgment module, and a plastic pellet transport vehicle allocation module. The total transport volume statistics module is electrically connected to the plastic pellet transport vehicle load statistics module and the redundancy judgment module, and the plastic pellet weighing unit is electrically connected to the total transport volume statistics module; The total transport volume statistics module is used to count the weight of plastic pellets that need to be transported by rail. The plastic pellet transport vehicle load statistics module is used to count the load of each plastic pellet transport vehicle. The redundancy judgment module is used to judge whether the current number of transport vehicles is redundant. The plastic pellet transport vehicle allocation module is used to allocate the quantity and load of the plastic pellet transport vehicles corresponding to each plastic pellet forming point.

4. The central feeding system based on the optimized feeding path according to claim 3, characterized in that: The specific method for the plastic pellet transport vehicle planning module to calculate the optimal solution of the number of plastic pellet transport vehicles of the track transportation control module is as follows: S5. The total load required for all track transportation control modules in the plastic particle forming area , there are q plastic particle transport vehicles in total on the transport tracks in this area, and the total load that all plastic particle transport vehicles can carry is . When , there is redundancy in plastic particle transport vehicles at this time. Park the excess plastic particle transport vehicles at the temporary parking point. When , there are just enough plastic particle transport vehicles at this time. When , there is a shortage of plastic particle transport vehicles at this time. First, ensure that each plastic particle forming machine has a certain number of plastic particle transport vehicles to maintain basic operation, and then distribute the remaining plastic particle transport vehicles.

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