CN115456134B

CN115456134B - Cutting method and electronic equipment

Info

Publication number: CN115456134B
Application number: CN202210820910.9A
Authority: CN
Inventors: 王吉利; 胡娅; 林莹; 卢兴见; 江宇辉
Original assignee: Shanghai Sec Technology Co ltd; East China Normal University
Current assignee: Shanghai Sec Technology Co ltd; East China Normal University
Priority date: 2022-07-13
Filing date: 2022-07-13
Publication date: 2023-05-30
Anticipated expiration: 2042-07-13
Also published as: CN115456134A

Abstract

The application relates to a cutting method and electronic equipment, which are applied to the technical field of computers, and the method comprises the following steps: after receiving a cutting instruction, acquiring master batch material information, project demand information, the shortest meter number and the minimum length difference between demands; according to the demand width of all main demands, distributing a first target demand combination meeting the width utilization rate demand for the parent roll, and carrying out cutter distribution based on the first target demand combination, and updating the parent roll material information and the project demand information; based on the length multiple relation between the required meters of the main requirements, a second target requirement combination is obtained, a parent roll corresponding to the second target requirement combination is determined, cutter matching is carried out, and meanwhile, parent roll material information and project requirement information are updated; and distributing the residual main requirements based on the residual master batch material information and carrying out cutter distribution. The cutting method can reduce the cost of manpower and material resources.

Description

Cutting method and electronic equipment

Technical Field

The present disclosure relates to the field of computer technologies, and in particular, to a cutting method and an electronic device.

Background

Silicon steel is an iron-silicon alloy with silicon content of 0.5-4.8%, and is a soft magnetic material widely used in the field of electricians. The silicon steel sheet is a kind of ferrosilicon soft magnetic alloy with very low carbon content, and the silicon content is generally 0.5-4.5%, and the addition of silicon can raise the resistivity and maximum magnetic conductivity of iron and reduce coercive force, iron core loss and magnetic ageing, and is mainly used for making iron cores of various transformers, motors and generators.

The silicon steel coiled material can not change the material structure at will because of the special material specification, and needs to be provided with professional instruments for cutting, and each time the cutter is provided, the instruments are required to be arranged, and certain manpower and material resource cost is required to be consumed.

Therefore, providing a reasonably planned cutting scheme for silicon steel rolls becomes a technical problem to be solved in the art.

Disclosure of Invention

In order to reduce manpower and material resources for cutting a silicon steel coil, the application provides a cutting method and electronic equipment.

In a first aspect, the present application provides a cutting method, which adopts the following technical scheme:

a method of cutting, comprising:

after receiving a cutting instruction, acquiring master batch material information, project demand information, the shortest meter number and the minimum length difference between demands, wherein the master batch material information comprises a master batch width, a master batch usable width range and a master batch length of each master batch, and the project demand information comprises a demand meter number, a demand width and a demand meter number range of each main demand;

distributing a first target demand combination meeting the width utilization rate requirement for the parent roll according to the demand width of all the main demands, and carrying out cutter distribution based on the first target demand combination, and simultaneously updating parent roll material information and project demand information, wherein each demand in the first demand combination meets the minimum length difference between demands;

Based on the length multiple relation between the required meters of the main requirements, a second target requirement combination is obtained, a parent roll corresponding to the second target requirement combination is determined, cutter matching is carried out, and parent roll material information and project requirement information are updated at the same time;

and distributing the residual main demands based on the residual master batch material information and carrying out cutter distribution so as to complete the distribution of the main demands.

The present application may be further configured in a preferred example to: after the master batch material information, the project demand information, the shortest meters and the minimum length difference between demands are obtained, the method further comprises the following steps:

determining, for each primary demand, whether there is a parent roll having a demand width within the available width of the parent roll;

if the primary requirement exists, determining an effective cutting length based on the required meters of the primary requirement, the length of the parent roll and the shortest meters, and matching a cutter and updating parent roll material information and project requirement information; and performing iteration until traversing completes all main requirements.

The present application may be further configured in a preferred example to: the determining the effective cutting length based on the required meters of the main requirement, the parent roll length and the shortest meters comprises the following steps:

when the length of the parent roll is not less than the required meter of the main requirement, judging whether the difference value between the length of the parent roll and the required meter of the main requirement is less than the shortest meter;

When the effective cutting length is not smaller than the shortest meter, determining that the effective cutting length is the required meter;

when the cutting length is smaller than the shortest meter, judging whether a target cutting length exists, wherein the target cutting length is a length which enables the parent roll to meet the shortest meter in the range of the required meters; if the target cutting length exists, the target cutting length is taken as the effective cutting length; if the target cutting length does not exist, judging whether the maximum length exists in the preset range; if the maximum length exists, the maximum length is taken as the effective cutting length, and if the maximum length does not exist, the effective cutting length is determined to be absent;

when the length of the parent roll is smaller than the required meter of the main requirement, and when the difference between the required meter of the main requirement and the length of the parent roll is not smaller than the shortest meter or meets the overflow short difference, determining that the effective cutting length is the length of the parent roll; when the difference between the required meters and the parent roll length is smaller than the shortest meters or the overflow short difference is not met, judging whether the maximum length exists in the preset range; if the maximum length exists, taking the maximum length as an effective cutting length;

the preset range is determined by the difference value between the shortest meters, the required meters and the shortest meters, and the maximum length can enable the surplus length of the parent roll to be larger than the shortest meters.

The present application may be further configured in a preferred example to: according to the demand width of all main demands, a first target demand combination meeting the width utilization rate requirement is allocated for the parent roll, and the method comprises the following steps:

determining a target demand combination from a plurality of demand combinations for each parent roll, wherein each demand combination comprises a plurality of main demands, the total width of the plurality of main demands is within the available width range of the parent roll, the length difference between the main demands meets the minimum length difference between the demands, and the target demand combination is the combination with the maximum width utilization rate;

determining a shortest cut length from the cut lengths of all the primary demands within the target demand combination; when the same main demand in the target demand combination appears for multiple times, the cutting length of the main demand appearing for multiple times is the ratio of the required meter number to the required times; if the shortest cutting length is smaller than the shortest meters, or other required residual lengths in the target required combination cut according to the shortest cutting length are smaller than the minimum length difference between the requirements, determining the target required combination as an invalid combination; re-determining the combination with the second largest width utilization as a target demand combination, and re-determining the first target demand combination;

And if the shortest cutting length is not less than the shortest meters, or other required residual lengths in the target required combination after cutting according to the shortest cutting length are not less than the minimum length difference between requirements, determining the target required combination as the first target required combination.

The present application may be further configured in a preferred example to: the knife matching based on the first target demand combination comprises the following steps:

judging whether the length of the parent roll is larger than the shortest meter or meets the overflow short difference or shortest meter requirements of all main requirements in the first target requirement combination;

if so, the parent roll length is taken as a first effective cutting length,

if not, judging whether the shortest cutting length meets the shortest meter number and overflow short difference requirements of all requirements in the combination of the parent roll and the first target requirement, and if so, taking the shortest cutting length as a first effective cutting length; if the first effective cutting length is not satisfied, determining a first effective cutting length in the shortest required meter range;

the knife is configured based on the first effective cutting length.

The present application may be further configured in a preferred example to: based on the length multiple relationship between the demand meters of the main demand, to obtain a second target demand combination, including:

Determining the shortest required meter number;

determining a second target demand combination with a length multiple relation with the shortest demand meter based on the shortest demand meter, or determining multiple meter ranges of a plurality of length multiple relations based on a demand meter range of the shortest demand meter; and taking a combination of demands corresponding to demand lengths in the multiple meter range as the second target demand combination.

The present application may be further configured in a preferred example to: the determining of the parent roll corresponding to the second target demand combination and the matching of the cutter comprise:

judging whether a target parent roll with the parent roll length larger than the minimum value exists in the plurality of parent rolls; the minimum value is the minimum value of the shortest meter number range of the second target demand combination;

if the length multiple relation does not exist, the length multiple relation is redetermined based on the next shortest required meter number;

if the second effective cutting length meeting the shortest required meter is determined from the range of the required meters corresponding to the shortest required meters; starting from the widest demand width in the main demands with length multiple relation, sequentially adding the main demands into a cutter matching combination;

and for each target parent roll, determining the width utilization rate according to the cutter matching combination, taking the target parent roll with the maximum width utilization rate as the parent roll corresponding to the second target demand combination, and matching the parent roll corresponding to the second target demand combination based on the cutter matching combination and the second effective cutting length.

The present application may be further configured in a preferred example to: before the cutter is matched based on the cutter matching combination and the parent roll, the method further comprises the following steps:

for the second target demand combination corresponding to the surplus width of the parent roll, determining the main demand with the maximum surplus width utilization rate and meeting the cutting condition from the surplus demands;

and adding the main requirement meeting the cutting condition into the matched knife combination.

The present application may be further configured in a preferred example to: distributing the residual main demands based on the residual master batch material information and carrying out cutter distribution so as to complete the distribution of the main demands, wherein the method comprises the following steps:

starting from the shortest main demand, traversing from the widest parent roll, and determining a third effective cutting length according to the parent roll length, the required meters and the shortest meters;

and adding the combination which meets the residual cutting condition and has the maximum width utilization rate into a final matched cutter combination from the residual requirement according to the residual width of the parent roll and the priority of the requirement, and cutting the parent roll according to the final matched cutter combination and the third effective cutting length.

In a second aspect, the present application provides a cutting device, which adopts the following technical scheme:

the data acquisition module is used for acquiring master batch material information, project demand information, the shortest meter and the minimum length difference between demands after receiving a cutting instruction, wherein the master batch material information comprises a master batch width, a master batch usable width range and a master batch length of each master batch, and the project demand information comprises a demand meter, a demand width and a demand meter range of each main demand;

The first allocation module is used for allocating a first target demand combination meeting the width utilization rate requirement for the parent roll according to the demand width of all the main demands, allocating cutters based on the first target demand combination, and updating parent roll material information and project demand information at the same time, wherein each demand in the first demand combination meets the minimum length difference between demands;

the second distribution module is used for obtaining a second target demand combination based on the length multiple relation between the demand meters of the main demands, determining a parent roll corresponding to the second target demand combination, carrying out cutter distribution, and updating parent roll material information and project demand information;

and the third distribution module is used for distributing the residual main requirements based on the residual master batch material information and carrying out cutter distribution so as to complete the distribution of the main requirements.

In a third aspect, the present application provides an electronic device, which adopts the following technical scheme:

at least one processor;

a memory;

at least one application program, wherein the at least one application program is stored in the memory and configured to be executed by the at least one processor, the at least one application program configured to: the above method is performed.

In a fourth aspect, the present application provides a computer readable storage medium, which adopts the following technical scheme:

a computer readable storage medium having stored thereon a computer program which, when executed in a computer, causes the computer to perform the method described above.

In summary, the present application includes at least one of the following beneficial technical effects:

after receiving a cutting instruction, acquiring master batch material information, project demand information, the shortest meter number and the minimum length difference between demands; according to the demand width of all main demands, a first target demand combination meeting the demand of the width utilization rate is allocated for the parent roll, and the cutter is allocated based on the first target demand combination, so that the demand combination can be allocated based on the width utilization rate, and the material utilization rate is improved; then, based on the length multiple relation between the required meters of the main requirements, a second target requirement combination is obtained, a parent roll corresponding to the second target requirement combination is determined, and the cutter matching is performed, so that the cutter matching number can be reduced, and the production efficiency is improved; and then, distributing the residual main requirements based on the residual master batch material information and carrying out cutter distribution, so that the residual main requirements can be distributed and ingredients can be processed, the main requirements are fully met, and in a comprehensive way, the cutting method can reduce manpower and material resources for cutting the silicon steel coil.

Drawings

Fig. 1 is a schematic flow chart of a cutting method according to an embodiment of the present application;

FIG. 2 is a schematic flow chart of a specific cutting method according to an embodiment of the present disclosure;

fig. 3 is a schematic structural view of a cutting device according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

The present application is described in further detail below with reference to fig. 1-4.

The present embodiment is merely illustrative of the present application and is not intended to be limiting, and those skilled in the art, after having read the present specification, may make modifications to the present embodiment without creative contribution as required, but is protected by patent laws within the scope of the present application.

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

In addition, the term "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In this context, unless otherwise specified, the term "/" generally indicates that the associated object is an "or" relationship.

Embodiments of the present application are described in further detail below with reference to the drawings attached hereto.

The silicon steel coiled material can not change the material structure at will because of the special material specification, and needs to be provided with professional instruments for cutting, and each time the cutter is provided with the instruments, certain manpower and material resource cost is required to be consumed, so that a set of rational planning silicon steel coiled cutting scheme plays a non-negligible role in improving the material utilization rate and the production efficiency of factories and reducing the manpower cost.

Heuristic algorithms are proposed relative to optimization algorithms, which are algorithms based on visual or empirical construction, giving a viable solution to each instance of the combinatorial optimization problem to be solved at acceptable expense (referring to computation time and space), the degree of deviation of which from the optimal solution cannot generally be expected, mainly for solving NP-problems (Non-Deterministic Polynomial Problems ). Heuristic algorithms are algorithms designed for searching in a solution space, are generally tailored according to the characteristics of the problem, and cannot guarantee the feasibility and the optimality of the obtained solution. Classical algorithms such as greedy algorithm, simulated annealing algorithm, genetic algorithm and the like are all applications of heuristic algorithms.

The embodiment of the application provides a silicon steel coil intelligent cutting method based on a heuristic algorithm, which aims to simultaneously improve the material utilization rate and the production efficiency of a factory and reduce the labor cost.

Specifically, the embodiment of the application provides a cutting method, which can be executed by electronic equipment, wherein the electronic equipment can be a server or terminal equipment, and the server can be an independent physical server, a server cluster or a distributed system formed by a plurality of physical servers, or a cloud server for providing cloud computing service. The terminal device may be a smart phone, a tablet computer, a notebook computer, a desktop computer, etc., but is not limited thereto, and the terminal device and the server may be directly or indirectly connected through a wired or wireless communication manner, which is not limited herein.

As shown in fig. 1, the method includes step S101, step S102, step S103, and step S104, wherein: step S101: when a cutting instruction is received, master batch material information, project demand information, the shortest meters and the minimum length difference between demands are obtained, wherein the master batch material information comprises a master batch width, a master batch usable width range and a master batch length of each master batch, and the project demand information comprises a demand meters, a demand width and a demand meters range of each main demand.

The length of the parent roll can be determined based on the weight of the parent roll and the density of the parent roll, and all parent rolls have the same quality, thus the density is the same, and the parent roll length is generally longer, so that the length of the parent roll can be calculated according to the weight of each parent roll.

The width range of the parent roll usable for the parent roll material may specifically be a width range obtained by subtracting a corresponding target edge from a width of each raw material roll according to a material type thereof, so as to obtain the usable width range of the parent roll material, wherein the target edge includes an edge yarn and an edge strip when the material type of the parent roll material is a raw edge roll, and the target edge includes: edge strips. For project requirements, the required meter number range may be a meter number range allowed by each requirement calculated according to the positive and negative overflow short difference and the required meter number, wherein the positive and negative overflow short difference user can be set according to actual requirements. The shortest meter number user can be set according to actual demands or according to experience values, the embodiment of the application is not limited any more, and it can be understood that after each cutting, if the length of the parent roll is remained, the follow-up length capable of meeting demands can be ensured, so that the utilization rate of the parent roll is improved.

Specifically, obtaining the master batch material information and the project demand information may include: and acquiring file import project requirements and raw material information in csv and xlsx formats imported by a user. Further, the master batch material information and the project requirement information can be displayed above the system interface.

Furthermore, the cutting instruction can carry user information; the cutting method may further include: judging whether the user information is compliance user information, wherein the user information can be a physical address of a user or an account number of the user; if yes, the system can be logged in, and the master batch material information and the project demand information are uploaded.

Thus, when the user information is specifically the physical address of the user, determining whether the user information is compliant user information includes: and matching the physical address of the user with a compliant physical address in a preset address table. Of course, an administrator account may also be set, based on which users can be added or deleted in the user table, user passwords can be modified, and user lists can be refreshed, and the administrator is allowed to add or delete physical addresses of users to the address table, only machines with physical addresses in the address table can log into the system. The system has perfect functions, and the manager identity is set to effectively control the system, so that the interface is concise and clear and easy to get on hand.

When the user information is specifically the account number of the user, judging whether the user information is the compliant user information or not includes: and matching the account number of the user with a compliance account number in a preset account number table.

It may be appreciated that default parameters are also preset in the electronic device, and the user is allowed to set different default parameters for different items, where specific default parameters include, but are not limited to, any one or more of the following: the minimum length difference among requirements in the residual material specification, thickness parameters, positive and negative overflow short difference, edge wire specification, shortest meter number, priority mark and width combination.

Referring to tables 1, 2 and 3, table 1 is an example of item demand information, table 2 is an example of parent roll information, and table 3 is an example of default parameters.

Table 1 item demand table

TABLE 2 Master volume information Table

Type of material	Numbering device	Width/mm	Weight/kg	Length/m
					Raw edge roll	19847061810	1092	8200	3444
Raw edge roll	19846844501	1094	9750	4087
					Raw edge roll	19846958110	1097	9550	3992
Raw edge roll	19847268010	1095	9650	4042
					Raw edge roll	19847337510	1092	9620	4040
Inventory of	19847337520	150	1970	6024
					Inventory of	19847337515	150	5910	18071

TABLE 3 default parameter table

id	Parameter name	Value of
			0	Specification of surplus material	30
1	Thickness parameter	0.285
			2	Normal overflow short difference	0.01
3	Negative overflow short difference	0.01
			4	Left edge of burr roll	15
5	Edge roll right boundary	20
			6	Left edge of edge roll	10
7	Edge roll right boundary	20
			8	Inventory left boundary	0
9	Inventory right boundary	10
			10	Shortest meter number	450
11	Minimum length difference between demands in width combinations	600
			12	Priority identification	Width first

For example, a selvedge roll with a width of 1095mm has a width of 80-120 mm for the selvedge strip and 15-20 mm for the edge wire, and the usable width of the selvedge roll is 955-1000 mm. And for project requirements, calculating the allowable meter range of each requirement according to the positive and negative overflow short difference and the required meter. For example, if the number of meters is 2605m, the right boundary of the meter range is 2631m according to the positive overflow short-term difference of 0.01, and the left boundary of the meter range is 2579m according to the negative overflow short-term difference of 0.01.

Step S102: according to the demand width of all main demands, distributing a first target demand combination meeting the width utilization rate requirement for the parent roll, and carrying out cutter distribution based on the first target demand combination, and simultaneously updating parent roll material information and project demand information, wherein each demand in the demand combination meets the minimum length difference between demands;

the step is based on the combination of width utilization rate distribution requirements, and the utilization rate of materials can be improved. It can be understood that the main requirement in each requirement combination can be generated once or multiple times, and the embodiment of the application is not limited any more, and the user can set the requirement by himself. It will be appreciated that in order to be able to increase the run time, the maximum number of demands per demand combination can be custom set, preferably a maximum of 3.

After the first target demand combination is determined, a first effective cutting length can be determined based on the cutting length, the parent roll length and the shortest meters corresponding to each main demand in the first demand combination, and then the cutter is matched based on the first effective cutting length.

It may be understood that in the embodiment of the present application, step S102 may be performed first, and then step S103 may be performed, and accordingly, the parent roll information and the project requirement information related in step S103 may be updated information in step S102; the step S103 may be executed first, and then the step S102 may be executed, and accordingly, the parent roll information and the project requirement information related in the step S102 may be updated information in the step S103, and the user may select according to the actual requirement. Further, the cutting method may further include: the priority identifier of the user trigger is acquired, where the priority identifier includes a width priority and a length priority, and the priority identifier is used to determine the execution sequence of step S102 and step S103, for example, when the width is priority, step S102 is executed first, and then step S103 is executed.

S103, based on the length multiple relation between the demand meters of the main demands, a second target demand combination is obtained, a parent roll corresponding to the second target demand combination is determined, cutter matching is carried out, and meanwhile, parent roll material information and project demand information are updated.

The step can distribute the demand combination based on the length multiple relation between the demand meters of the main demand, reduce the number of the matched cutters and improve the production efficiency.

And step S104, distributing the residual main demands based on the residual master batch material information and carrying out cutter distribution so as to complete the main demand distribution.

The remaining main demand can be dispensed and the ingredients processed, ensuring that the main demand is fully satisfied.

In the embodiment of the application, after receiving a cutting instruction, master batch material information, project demand information, the shortest meter number and the minimum length difference between demands are obtained; according to the demand width of all main demands, a first target demand combination meeting the demand of the width utilization rate is allocated for the parent roll, and the cutter is allocated based on the first target demand combination, so that the demand combination can be allocated based on the width utilization rate, and the material utilization rate is improved; then, based on the length multiple relation between the required meters of the main requirements, a second target requirement combination is obtained, a parent roll corresponding to the second target requirement combination is determined, and the cutter matching is performed, so that the cutter matching number can be reduced, and the production efficiency is improved; and then, distributing the residual main requirements based on the residual master batch material information and carrying out cutter distribution, so that the residual main requirements can be distributed and ingredients can be processed, the main requirements are fully met, and as can be seen from the fact, the cutting method provided by the embodiment of the application can not only reduce manpower and material resources for cutting the silicon steel coil.

Further, in order to improve the cutting efficiency, after obtaining the master batch material information, the project demand information, the shortest meter number and the minimum length difference between demands, the method further comprises: determining whether a parent roll with a required width within the available width range of the parent roll exists for each main requirement, if so, determining an effective cutting length based on the required meter number, the parent roll length and the shortest meter number of the main requirement, and matching a cutter and updating parent roll material information and project requirement information; and performing iteration until traversing completes all main requirements.

Determining a main demand, traversing the parent rolls, determining whether parent rolls with the width of the main demand within the available width range of the parent rolls exist, and if the current main demand is not within any available width range of the parent rolls, continuing traversing the next main demand; if yes, judging whether an effective cutting length exists; if the effective cutting length exists, the cutter is matched and information is updated, if the effective cutting length does not exist, whether the effective cutting length is within the usable width range of the parent roll of the next parent roll is judged, it can be understood that the parent roll material information and the project demand information are updated after each cutter matching, and then the next main demand is determined to be directly matched according to the updated project demand information until all main demands are processed.

To further increase the cutting efficiency, it may be determined whether there is a primary demand with a demand width within the available width of the parent roll in a manner that the parent roll width is from large to small and the demand width of the primary demand is from large to small. Preferably, the main demand may be traversed sequentially starting from the widest demand.

Therefore, according to the embodiment of the application, after basic information such as master batch material information, project demand information, the shortest meters and the minimum length difference between demands are acquired, the master demands are directly matched, specifically, whether a master roll with the demand width within the available width range of the master roll exists or not is determined, if the master roll with the demand width within the available width range of the master roll exists, the effective cutting length is determined, the cutter is matched for cutting, the master demands with the distribution width within the available width range of the stock can be just met, and the cutting efficiency is improved.

Further, in one achievable embodiment, determining the effective cut length based on the number of required meters of the primary demand, the parent roll length, and the shortest number of meters includes:

when the length of the parent roll is smaller than the required meter of the main requirement, and when the difference between the required meter of the main requirement and the length of the parent roll is not smaller than the shortest meter or meets the overflow short difference, determining that the effective cutting length is the length of the parent roll; when the difference between the required meters and the parent roll length is smaller than the shortest meters or the overflow short difference is not met, judging whether the maximum length exists in a preset range; if the maximum length exists, the maximum length is taken as the effective cutting length;

Specifically, the main requirements can be traversed from the widest main requirement or the narrowest main requirement or any main requirement in sequence, whether a parent roll with the width exactly matched with the current requirement exists or not is checked, namely, the required width exactly falls within the available width range of the parent roll, if not, the next main requirement is traversed continuously, if so, the effective cutting length is determined based on the required meter number Ln of the current main requirement, the parent roll length Lr of the current parent roll and the shortest meter number Lmin during distribution. For example, in the examples of tables 1 and 2, taking the shortest demand lmin=450m as an example, parent rolls are sorted in descending order of width and id, and then matched with the demand in order. The available width range of the stock parent roll with the width of 150 is 140-150 mm based on the left stock boundary and the stock-with-boundary, and it is easy to see that the main requirement with the width of 150 is just within the available width range of the parent roll, and the parent roll corresponding to the requirement exists.

Further, when Ln.ltoreq.Lr, if Lr-Ln.ltoreq.Lmin, the effective cut length is determined to be Ln, and the remaining cut length is available for subsequent use. Otherwise, according to the required meter range, a length Li that enables the parent roll to meet the shortest meter is found as the cut length. If Li is not present, a maximum length Lj is found within the range (Lmin, ln-Lmin) that allows the parent roll to meet the shortest meters as the effective cut length, at which time the parent roll can meet the remainder greater than the shortest meters, and the current demand is divided into segments, with the remainder length also greater than the shortest meters. That is, when the required meter number of the main requirement is less than or equal to the length of the parent roll, determining a difference value of subtracting the shortest meter number from the parent roll, if an effective cutting length can be found between the shortest meter number and the difference value, matching a cutter, correspondingly recording the parent roll, updating current required item information and parent roll information, and otherwise, not distributing. And continuing to search whether parent rolls with matched widths exist or not until the next main requirement is traversed after all parent rolls are traversed. Examples are given in connection with tables 1, 2, and 3, wherein a parent roll numbered "19847337515" matches a primary demand with a width of 150, and the demand length is less than or equal to the parent roll length. Wherein the parent roll length L _r 18071m, required length L _n 6024m, satisfy L _r -L _n ≥L _min Thus determining the cutting length as L _n I.e. 6024m.

Further, when Ln>When Lr, the process of determining the effective cut length includes: if Ln-Lr is more than or equal to Lmin or Ln-Lr meets the overflow short difference of the requirement, the cutting length is Lr; otherwise, finding a maximum length Lj of the parent roll which meets the shortest meter number in the range of (Lmin, ln-Lmin) as an effective cutting length, if the effective cutting length is found, matching a cutter and correspondingly recording the parent roll, at the moment, the current main demand is not cut, the residual cutting length of the current main demand is the original main demand meter number-the effective cutting length, further updating the current demand item information and the parent roll information, otherwise, not distributing, continuing to find whether the parent roll with the matched width exists or not until the next main demand is traversed after all parent rolls are traversed. As examples in connection with tables 1, 2, 3,wherein, the parent roll numbered as "19847337520" is matched with the primary demand with a width of 150, and the demand length is greater than the parent roll length. Wherein the parent roll length L _r 6024m required length L _n 12048m, satisfy L _n -L _r ≥L _min Thus determining the cutting length as L _r I.e. 6024m.

The cutter matching results of the embodiment of the application are shown in table 4:

Table 4 results of knife matching

Parent roll numbering	Knife width/mm	Meter/m	Edge yarn/mm
				19847337520	A150	6024	0
19847337515	A150	6024	0

Therefore, the size relation of the required meter number of the main requirement and the length of the parent roll can be fully considered in the embodiment of the application, when the length of the parent roll is not less than the required meter number of the main requirement, the relation of the difference value of the required meter number of the parent roll length of the parent roll and the main requirement and the shortest meter number is considered to ensure the full utilization of the parent roll, the probability that the surplus parent roll cannot be used after cutting can be reduced, and when the length of the parent roll is less than the required meter number of the main requirement, the utilization rate of the parent roll is improved based on the shortest meter number or the overflow short difference is met to ensure the full utilization of the parent roll.

Further, in an implementation manner, according to the required widths of all the main requirements, a first target requirement combination meeting the width utilization requirement is allocated to the parent roll, which includes:

Determining a shortest cut length from the cut lengths of all the primary demands within the target demand combination; when the same main demand in the target demand combination appears for a plurality of times, the cutting length of the main demand appearing for a plurality of times is the ratio of the required meters to the times;

if the shortest cutting length is smaller than the shortest meters, or other required residual lengths in the target required combination cut according to the shortest cutting length are smaller than the minimum length difference between the requirements, determining the target required combination as an invalid combination; re-determining the combination with the second largest width utilization as a target demand combination, and re-determining the first target demand combination;

and if the shortest cutting length is not less than the shortest meters, or other required residual lengths in the target required combination after cutting according to the shortest cutting length are not less than the minimum length difference between requirements, determining the target required combination as a first target required combination.

To increase the rate of first target demand determination, one can traverse from the widest parent roll, selecting a parent roll longer in meters if there are multiple parent rolls of the same width. For each parent volume, traversing the combination containing 2, 3 and … … main demands in sequence from the widest demand of the main demands, wherein the main demands can repeatedly appear in the combination, and limiting the maximum number of the demands in the combination by adopting various strategies The method comprises the steps of optimizing the running time of a system, finding out target demand combinations which fall in the usable width range of a parent roll and have the maximum width utilization rate, wherein each demand combination is determined by electronic equipment in advance based on the width of each main demand and the length of the demand, the total width of a plurality of main demands in each demand combination is in the usable width range of the parent roll, and the length among the main demands meets the minimum length difference among the demands. Table 1, table 2, table 3 are given by way of example only (embodiments of the present application provide one example) wherein a plurality of demand combinations (630, 370), (550, 450), (490 ) may be obtained from the widest parent roll "19846958110" traversing, parent roll "19846958110"; the parent roll "19846844501" obtains the demand combination (660, 300); the parent roll "19847337510" obtains the demand combination (660, 300); the parent roll "19847061810" obtains the desired combination (660, 300). The demand combinations of different parent rolls are not obtained at the same time, and when all demand combinations of one parent roll are traversed, the demand combinations of the next parent roll are calculated. Finding the shortest demand in the target demand combination, specifically, knowing that the meter of a certain main demand in the target demand combination is L _i The number of times the primary demand occurs within the target demand combination, n _i The main requirement has a cut length of L _i /n _i . Calculating the cutting length of all main demands in the target demand combination, and taking the shortest cutting length as the cutting length L of the target demand combination _w Shortest cut length L _w The corresponding primary demand is the shortest demand in the combination. If L _w <L _min Or in combination with requirements according to L _w And if the residual length after cutting is smaller than the minimum length difference between the specified requirements, the target requirement combination is judged to be an invalid combination, the target requirement combination is redetermined, namely, the combination with the next highest utilization rate is selected, and the determination of the first target requirement combination is carried out again.

With the previous embodiment, for a desired combination (630, 370) of parent rolls "19846958110", the desired cut length for a width 630 would be 1682m and the desired cut length for a width 370 would be 988m, then the shortest desired width within the combination would be 370 and the shortest cut length Lw of the combination would be 988m. Whereas for the combination (490 ) the required cut length for the width 490 is half the original length, i.e. 616m. The shortest required width within the combination is 490 and the combined cut length Lw should be 616m. The remaining demand combinations can also be calculated in this way.

Therefore, in the embodiment of the present application, the shortest cutting length can be determined from the cutting lengths of all the main demands in the target demand combination determined from the multiple demand combinations, and the final first target demand combination is determined based on the sizes of the shortest cutting length and the shortest meters, or the sizes of the minimum length differences between the remaining lengths of other demands and the demands in the target demand combination after cutting according to the shortest cutting length, so that an optimal determination manner of the first target demand combination can be provided under the condition of ensuring the utilization rate of the parent rolls.

Further, in one implementation, the knife matching based on the first target requirement combination includes: judging whether the length of the parent roll is larger than the shortest meter or meets the overflow short difference or shortest meter requirements of all main requirements in the first target requirement combination; if so, taking the length of the parent roll as a first effective cutting length, if not, judging whether the shortest cutting length meets the shortest meter number and overflow short difference requirements of all requirements in the combination of the parent roll and the first target requirement, and if so, taking the shortest cutting length as the first effective cutting length; if the first effective cutting length is not satisfied, determining a first effective cutting length in the shortest required meter range; the knife is configured based on the first effective cutting length.

Specifically, if the master roll length is fully allocated to meet the shortest meter or short-cut difference requirement of all main requirements in the first target combination, the master roll length is used as the first effective cutting length to carry out cutter allocation. Otherwise, if the allocation length is the shortest cut length L _w The shortest meter or overflow short difference requirement of all the requirements in the combination of the parent roll and the first target requirement can be met, then the combination is expressed as L _w As a first effective cut length, if not, a cut length that meets both the parent roll and all the requirements in the combination is found in the shortest required meter range. If the first effective cutting length is found, the cutter is matched and the parent roll is subjected to phaseAnd (3) recording, namely updating the current demand item information and the parent volume information, otherwise, invalidating the current demand combination and not distributing. And continuing to determine the demand combination, and selecting the combination with the next highest utilization rate until the parent roll is distributed or all possible demand combinations are traversed. With the above example in mind, for one desired combination (630, 370) of parent rolls "19846958110", the shortest cut length L is assigned _w The shortest meter or overflow short difference requirement of all the requirements in the parent roll and the combination can be met, then L is used _w As cut length, 988m. For one desired combination (660, 300) of parent rolls "19846844501", parent roll length and shortest cut length L are assigned _w The cutting condition cannot be met, the shortest demand has a meter number range of 2579-2631 m, the other demand has a meter number range of 2711-2765 m, the two demands cannot be met at the same time no matter how the two demands are distributed, and therefore the demand combination is an invalid combination and is not distributed. The rest of the knife matching process requiring combination is similar. The knife matching results are shown in table 5:

table 5 knife matching results

Parent roll numbering	Knife width/mm	Meter/m	Edge yarn/mm
				19846958110	A630A370L40L40	988	17
19846958110	A550A450L40L40	945	17
				19846958110	A490A490L40L60	616	17

As can be seen, in the embodiment of the present application, based on the fact that the length of the parent roll is greater than the shortest meter, or the parent roll meets the short-overflow difference or the shortest meter requirement of all main requirements in the first target requirement combination, determining the length of the parent roll as a first effective cutting length and allocating a cutter, otherwise, when the shortest cutting length meets the shortest meter and short-overflow difference requirements of all requirements in the combination of the parent roll and the first target requirement, taking the shortest cutting length as the first effective cutting length, and if not, determining the first effective cutting length in the meter range of the shortest requirement, and allocating a cutter; the method can combine the actual parent roll length, the shortest meter number and the short overflow difference requirement, ensure higher width utilization rate, fully consider the cutting length and improve the utilization rate of materials.

Further, based on the length multiple relationship between the demand meters of the main demand, to obtain a second target demand combination, including: determining the shortest required meter number; determining a second target demand combination with a length multiple relation with the shortest demand meter based on the shortest demand meter, or determining multiple meter ranges of a plurality of length multiple relations based on the demand meter range of the shortest demand meter; and a combination of demands corresponding to demand lengths in the range of multiples of meters is taken as a second target demand combination.

In one possible way, starting from the shortest required meter NA, the range is multiplied by 1, 2, … … to obtain a multiple range of the required meters NA according to the meter range of NA, wherein the maximum value of the multiple is obtained by dividing the length of the longest main requirement among all main requirements by the length of NA. Traversing other main requirements from the widest main requirement, finding the main requirement with intersection between the meter range and a certain multiple range, and indicating that the multiple relationship between the two main requirements can exist. And dividing the meter range of the main requirement by the multiple to obtain a unit range, taking the intersection of the unit range and the NA meter range as a new meter range of NA, and recalculating the multiple range to continuously search the multiple relation. In this example, the current shortest demand is taken as the demand for width 300. The rice number is 2579-2631 m, the maximum multiple is 2, and the required multiple is 2579-2631 m and 5158-5262 m. By traversing other demands, a multiple relationship of 1-fold can be found between the demand with the width of 450 and the current demand, and the meter number range is 2586-2658 m. In order to enable the multiple relationship between the two to be established, carrying out the carrying out operation on the meter number ranges of the two, taking the obtained result as a new meter number range of the current shortest requirement, namely 2586-2631 m, and recalculating the multiple range to continuously find the multiple relationship between the requirements. The process of taking the remaining demands as the current shortest demand is also similar.

In another possible way, a second target demand combination having a length multiple relationship with the shortest number of demand meters is determined based on the shortest number of demand meters.

Therefore, the embodiment of the application can determine the second target demand combination with the length multiple relationship with the shortest meter number after determining the shortest demand meter number, or determine the second target demand combination with the shortest meter number range with the length multiple relationship with the shortest meter number, so that a plurality of ways for determining the second target demand combination are provided, and the flexibility is better.

Further, determining a parent roll corresponding to the second target demand combination, and performing knife matching, including:

judging whether a target parent roll with the parent roll length larger than the minimum value exists in the plurality of parent rolls; the minimum value is the minimum value of the meter range of the shortest meter of the second target demand combination;

Specifically, a target parent roll with a length within the range of meters of NA or a length greater than the right boundary of the range of meters of NA is found from the raw material. For each target parent roll, a length is found in the NA meter range that satisfies the parent roll to the shortest meter. If the target parent volume meeting the condition does not exist, the next-shortest requirement is continuously traversed as NA, and the multiple relation is obtained again. And sequentially adding the matched cutter combination into each target parent roll meeting the length requirement from the widest requirement among requirements with multiple relations. And finding out the parent roll with the maximum utilization rate of the combined width as the parent roll corresponding to the second target demand combination, namely the matched cutter parent roll.

Therefore, the target parent roll meeting the length requirement can be preliminarily determined, then, the main requirements are sequentially added into the cutter matching combination from the widest requirement width in the main requirements with the length multiple relation, and the target parent roll with the maximum width utilization rate corresponding to the cutter matching combination is used as the parent roll corresponding to the second target requirement combination to match the cutters, so that the cutter matching quantity can be reduced.

Further, in order to reduce the number of matched cutters and improve the cutting efficiency, before the matched cutters are matched to the parent rolls corresponding to the second target requirement combination based on the matched cutter combination and the second effective cutting length, the method further comprises the following steps: for the second target demand combination corresponding to the surplus width of the parent roll, determining the main demand with the maximum surplus width utilization rate and meeting the cutting condition from the surplus demands; and adding the main requirement meeting the cutting condition into the cutter matching combination.

Specifically, for the surplus width of the parent roll, a demand combination with the maximum width utilization rate and meeting the cutting condition is found out from the surplus demands and added into the cutter matching combination. And matching the cutter, correspondingly recording the parent roll, and updating the current demand item and the parent roll. The next-shortest demand is traversed as NA until all demands are traversed. In the above embodiment, the demand combination with the multiple relationship is (300, 450), the demand combination with the maximum utilization ratio after the remaining width is distributed is (165, 70), the final cutter matching combination is (300, 450, 165, 70), the cutter matching parent roll is "19847268010", and the cutting length is 2586m. And after the cutter matching is completed, continuously traversing the next-shortest requirement, and repeating the steps until all requirements are traversed. The knife matching results are shown in table 6:

Table 6 knife matching results

Parent roll numbering	Knife width/mm	Meter/m	Edge yarn/mm
				19847268010	A300A450B165C70W47W47	2586	16

Therefore, the width of the parent roll can be fully utilized, the number of matched cutters is further reduced, and the production efficiency is improved.

Further, distributing the remaining main demands based on the remaining master batch material information and performing knife matching so as to complete the main demand distribution, including: starting from the shortest main demand, traversing from the widest parent roll, and determining a third effective cutting length according to the parent roll length, the required meters and the shortest meters; and adding the combination which meets the residual cutting condition and has the maximum width utilization rate into a final matched cutter combination from the residual requirements according to the residual width of the parent roll and the priority of the requirements, and cutting the parent roll according to the final matched cutter combination and the third effective cutting length.

Specifically, the embodiment of the application can distribute the residual main demand and process the ingredients, ensure that the main demand is completely satisfied, give consideration to the distribution of other projects according to the priority of the demands of other projects, and improve the material utilization rate, wherein the residual main demand at least comprises the main demand of the first project, and of course can also comprise the demands of other projects.

Specifically, a third effective cut length is determined: starting from the shortest main demand, starting from the widest parent roll for each main demand, each traversal can be divided into a case 1, a case 2 and a case 3, the length of the rhizoma anemarrhenae volume is Lr, and the number of required meters is Ln.

Case 1: and determining that the third effective cutting length is Lr when Lr is in the range of the main required meters. Case 2: lr is greater than the right boundary of the main demand meter range. If Lr-Ln is greater than or equal to Lmin, determining that the third effective cutting length is Ln. Otherwise, according to the required meter range, a length Li that enables the parent roll to meet the shortest meter is found as a third effective cutting length. If Li is absent, a maximum length Lj is found within the range of (Lmin, ln-Lmin) that satisfies the shortest meters of the parent roll as the third effective cut length. Case 3: lr is less than the left boundary of the primary demand meter range. If Ln-Lr is larger than or equal to Lmin or Ln-Lr meets the overflow short difference of the requirement, the third effective cutting length is Lr. Otherwise, a maximum length Lj, which satisfies the shortest number of meters of the parent roll, is found within the range (Lmin, ln-Lmin) as the third effective cut length.

Determining a demand combination: if the third effective cutting length exists, for the residual width of the parent roll, sequentially finding out the combination which meets the residual cutting condition and has the maximum width utilization rate from the residual project requirements according to the project priority, and adding the combination into the requirement combination of the final matched knife.

Performing cutter matching: and according to the demand combination and the third effective cutting length, matching the cutter, correspondingly recording the parent roll, and updating the current demand item information and the parent roll information. If the current main requirement is not finished, continuing traversing the parent volume to meet the requirement, otherwise, carrying out the allocation of the next main requirement.

For example, in the traversal process, when the shortest main demand width is 630 and the parent roll is "19846958110", the parent roll length is greater than the right boundary of the main demand meter range, and the condition is satisfied. Main required length L _n 694m parent roll length L _r 1444m, then satisfy L _r -L _n ≥L _min The cutting length is determined as L _n I.e. 694m. For the remaining width, the combination with the maximum utilization rate is obtained according to the project priority and is (255, 95), the cutter combination after the material proportioning is processed and is (630, 255, 95) the third effective, and the cutting length is 694m.

When the shortest main demand width is 590 and the parent roll is 19847268010, the parent roll length is larger than the right boundary of the main demand meter range, and the condition is satisfied. Main required length L _n Length L of parent roll of 1106m _r At 1456m, find a maximum length L in the range of 450-656 m that meets the shortest meters for parent rolls _j As cut length, 656m. For the remaining widths, the combination with the highest utilization rate is obtained according to the project priority, namely (165, 165, 70), the knife combination is obtained after the ingredients are processed, namely (590, 165, 165, 70), and the third effective cutting length is 656m.

When the shortest main demand width is 660 and the parent roll is 19847268010, the parent roll length is smaller than the left boundary of the main demand meter range, and the condition of case 3 is satisfied. Main required length L _n 2738m parent roll length L _r 800m, then satisfy L _n -L _r ≥L _min The third effective cutting length is determined as L _r I.e. 800m. For the remaining width, the combination with the maximum utilization rate is obtained according to the project priority and is (255, 70), the knife combination after the ingredients are processed is (660, 255, 70), and the third effective cutting length is 800m. The rest of the traversal process can be similarly performedAnd (5) processing.

The knife matching results are shown in table 7:

table 7 knife matching results

Therefore, the method and the device can distribute the residual main requirements and process the ingredients, ensure that the main requirements are completely met, give consideration to the distribution of other projects according to the priority of the requirements of other projects, and improve the material utilization rate.

In order to verify the universality of the invention, five different projects are selected for testing in an experiment, indexes of the projects are calculated, manual schemes of the projects are compared with schemes generated by a system, the comparison results are shown in a table 8, compared with the manual scheme, the cutting scheme generated by the system has obvious improvement on the main project rate and the total project rate, meanwhile, the number of matched cutters is very similar to that of the manual scheme, and the utilization rate of materials is improved while the production efficiency is effectively ensured.

Table 8 index comparison

For any of the above embodiments, please refer to fig. 2, fig. 2 is a schematic diagram of a detailed segmentation method according to an embodiment of the present application, which includes:

s1, initializing basic information of customer demands and stock parent rolls, and calculating corresponding lengths according to weight, width and related parameters;

s2, according to input parameters, calculating the available width range of the parent roll and the required meter range respectively;

s3, sorting the demands and the parent rolls in descending order according to the widths of the demands and the parent rolls respectively, and selecting the current widest demands;

s4, judging whether the required width is within the available range of the stock; if not, executing S3;

s5, if yes, determining the cutting length, matching the cutter, and updating the requirements and the parent roll;

s6, judging whether traversing is completed or not; if not, executing S3;

s7, if yes, selecting the current widest parent roll;

s8, obtaining a demand combination with the sum of the thicknesses falling within the usable width range of the parent roll and the maximum width utilization rate;

s9, judging whether width combination is feasible or not; if not, executing S8;

s10, if yes, determining the cutting length, matching a cutter, and updating the requirements and the parent roll;

s11, judging whether all the required combinations of the parent rolls are found; if not, executing S8;

s12, if yes, judging whether the parent roll is traversed; if not, executing S7;

S13, if yes, selecting the current shortest requirement;

s14, finding other requirements with a multiple relation with the current shortest requirement in length to form multiple combinations;

s15, determining parent rolls and cutting lengths, and sequentially adding cutter matching combinations from the widest requirement in multiple combinations;

s16, distributing the residual width to other requirements, and adding a cutter matching combination into the requirement combination with the maximum width utilization rate;

s17, matching the cutter and updating the requirements and the parent rolls;

s18, judging whether the requirement is traversed; if not, executing S13;

s19, if yes, selecting the current shortest requirement;

s20, determining parent rolls and cutting lengths, and distributing the residual widths to other requirements to obtain a requirement combination with the maximum width utilization rate;

s21, matching the cutter and updating the requirements and the parent rolls;

s22, judging whether the current demand is completed or not; if not, executing S20;

s23, if yes, judging whether the requirement is traversed; if not, S19 is performed.

The above embodiment describes a cutting method from the viewpoint of a method flow, and the following embodiment describes a cutting device from the viewpoint of a virtual module or a virtual unit, and the following embodiment is described in detail.

The embodiment of the application provides a cutting device, as shown in fig. 3, the cutting device may specifically include:

The data obtaining module 310 is configured to obtain, after receiving the cutting instruction, master batch material information, project requirement information, a shortest meter number, and a minimum length difference between requirements, where the master batch material information includes a master batch width, a master batch usable width range, and a master batch length of each master batch, and the project requirement information includes a required meter number, a required width, and a required meter number range of each master requirement;

a first allocation module 320, configured to allocate a first target demand combination meeting the width utilization requirement for the parent roll according to the demand width of all the main demands, and perform blade allocation based on the first target demand combination, and update the parent roll material information and the project demand information at the same time, where each demand in the first demand combination meets a minimum length difference between demands;

a second allocation module 330, configured to obtain a second target demand combination based on a length multiple relationship between the demand meters of the main demand, determine a parent roll corresponding to the second target demand combination, and perform tool allocation, and update parent roll material information and project demand information;

and a third distributing module 340, configured to distribute the remaining main demands based on the remaining master batch material information and perform knife distribution, so as to complete the main demand distribution.

For the embodiment of the application, after receiving a cutting instruction, master batch material information, project demand information, the shortest meters and the minimum length difference between demands are obtained; according to the demand width of all main demands, a first target demand combination meeting the demand of the width utilization rate is allocated for the parent roll, and the cutter is allocated based on the first target demand combination, so that the demand combination can be allocated based on the width utilization rate, and the material utilization rate is improved; then, based on the length multiple relation between the required meters of the main requirements, a second target requirement combination is obtained, a parent roll corresponding to the second target requirement combination is determined, and the cutter matching is performed, so that the cutter matching number can be reduced, and the production efficiency is improved; and then, distributing the residual main demands based on the residual master batch material information and carrying out cutter distribution, so that the residual main demands can be distributed and ingredients can be processed, the main demands are ensured to be fully satisfied, and as can be seen from the above, the cutting method provided by the embodiment of the application can not only improve the material utilization rate, but also improve the production efficiency.

One possible implementation manner of the embodiment of the present application further includes: a fourth allocation module for:

In one possible implementation manner of the embodiment of the present application, when the fourth allocation module determines the effective cutting length based on the required meters of the main requirement, the parent roll length and the shortest meters, the fourth allocation module is specifically configured to:

In one possible implementation manner of this embodiment of the present application, when the first allocation module 302 performs the first target requirement combination that meets the width utilization requirement for the parent volume according to the requirement width of all the main requirements, the first allocation module is specifically configured to:

In one possible implementation manner of the embodiment of the present application, when performing the knife matching based on the first target requirement combination, the first allocation module 302 is specifically configured to:

If so, the parent roll length is taken as a first effective cutting length,

if not, judging whether the shortest cutting length meets the shortest meter number Lmin and overflow short difference requirements of all requirements in the combination of the parent roll and the first target requirement, and if so, taking the shortest cutting length as a first effective cutting length; if the first effective cutting length is not satisfied, determining a first effective cutting length in the shortest required meter range;

the knife is configured based on the first effective cutting length.

In one possible implementation manner of this embodiment of the present application, when the second allocation module 303 performs a length multiple relationship between the required meters based on the main requirement to obtain the second target requirement combination, the second allocation module is specifically configured to:

determining the shortest required meter number;

determining a second target demand combination with a length multiple relation with the shortest demand meter based on the shortest demand meter, or determining multiple meter ranges of a plurality of length multiple relations based on the demand meter range of the shortest demand meter; and a combination of demands corresponding to demand lengths in the range of multiples of meters is taken as a second target demand combination.

In one possible implementation manner of this embodiment of the present application, when executing determining a parent roll corresponding to the second target demand combination and performing the blade allocation, the second allocation module 303 is specifically configured to:

In one possible implementation manner of this embodiment of the present application, before executing the knife matching on the parent roll corresponding to the second target demand combination based on the knife matching combination and the second effective cutting length, the second distributing module 303 is further configured to:

And adding the main requirement meeting the cutting condition into the cutter matching combination.

In one possible implementation manner of the embodiment of the present application, when the third allocation module 304 allocates the remaining main requirements based on the remaining master batch material information and performs the knife allocation, the allocation of the main requirements is specifically used to:

and adding the combination which meets the residual cutting condition and has the maximum width utilization rate into a final matched cutter combination from the residual requirements according to the residual width of the parent roll and the priority of the requirements, and cutting the parent roll according to the final matched cutter combination and the third effective cutting length.

It will be clear to those skilled in the art that, for convenience and brevity, the specific operation of the apparatus 20 described above may refer to the corresponding procedure in the foregoing method embodiment, and will not be described in detail herein.

In an embodiment of the present application, as shown in fig. 4, an electronic device 400 shown in fig. 4 includes: a processor 401 and a memory 403. Processor 401 is connected to memory 403, such as via bus 402. Optionally, the electronic device 400 may also include a transceiver 404. It should be noted that, in practical applications, the transceiver 404 is not limited to one, and the structure of the electronic device 400 is not limited to the embodiment of the present application.

The processor 401 may be a CPU (Central Processing Unit ), general purpose processor, DSP (Digital Signal Processor, data signal processor), ASIC (Application Specific Integrated Circuit ), FPGA (Field Programmable Gate Array, field programmable gate array) or other programmable logic device, transistor logic device, hardware components, or any combination thereof. Which may implement or perform the various exemplary logic blocks, modules, and circuits described in connection with this disclosure. Processor 401 may also be a combination that implements computing functionality, such as a combination comprising one or more microprocessors, a combination of a DSP and a microprocessor, or the like.

Bus 402 may include a path to transfer information between the components. Bus 402 may be a PCI (Peripheral Component Interconnect, peripheral component interconnect standard) bus or EISA (Extended Industry Standard Architecture ) bus, among others. Bus 402 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in fig. 3, but not only one bus or type of bus.

The Memory 403 may be, but is not limited to, a ROM (Read Only Memory) or other type of static storage device that can store static information and instructions, a RAM (Random Access Memory ) or other type of dynamic storage device that can store information and instructions, an EEPROM (Electrically Erasable Programmable Read Only Memory ), a CD-ROM (Compact Disc Read Only Memory, compact disc Read Only Memory) or other optical disk storage, optical disk storage (including compact discs, laser discs, optical discs, digital versatile discs, blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.

The memory 403 is used for storing application program codes for executing the present application and is controlled to be executed by the processor 401. The processor 401 is arranged to execute application code stored in the memory 403 for implementing what is shown in the foregoing method embodiments.

Among them, electronic devices include, but are not limited to: mobile terminals such as mobile phones, notebook computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), in-vehicle terminals (e.g., in-vehicle navigation terminals), and the like, and stationary terminals such as digital TVs, desktop computers, and the like. But may also be a server or the like. The electronic device shown in fig. 4 is only an example and should not be construed as limiting the functionality and scope of use of the embodiments herein.

The present application provides a computer readable storage medium having a computer program stored thereon, which when run on a computer, causes the computer to perform the corresponding method embodiments described above. Compared with the related art, after receiving the cutting instruction, the embodiment of the application acquires the master batch material information, the project demand information, the shortest meters and the minimum length difference between demands; according to the demand width of all main demands, a first target demand combination meeting the demand of the width utilization rate is allocated for the parent roll, and the cutter is allocated based on the first target demand combination, so that the demand combination can be allocated based on the width utilization rate, and the material utilization rate is improved; then, based on the length multiple relation between the required meters of the main requirements, a second target requirement combination is obtained, a parent roll corresponding to the second target requirement combination is determined, and the cutter matching is performed, so that the cutter matching number can be reduced, and the production efficiency is improved; and then, distributing the residual main requirements based on the residual master batch material information and carrying out cutter distribution, so that the residual main requirements can be distributed and ingredients can be processed, the main requirements are ensured to be fully met, and in a comprehensive way, the manpower and material resources for cutting the silicon steel coil are reduced.

It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, these steps are not necessarily performed in order as indicated by the arrows. The steps are not strictly limited in order and may be performed in other orders, unless explicitly stated herein. Moreover, at least some of the steps in the flowcharts of the figures may include a plurality of sub-steps or stages that are not necessarily performed at the same time, but may be performed at different times, the order of their execution not necessarily being sequential, but may be performed in turn or alternately with other steps or at least a portion of the other steps or stages.

The foregoing is only a partial embodiment of the present application and it should be noted that, for a person skilled in the art, several improvements and modifications can be made without departing from the principle of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.

Claims

1. A method of cutting, comprising:

Distributing a first target demand combination meeting the width utilization rate requirement for the parent roll according to the demand width of all the main demands, and carrying out cutter distribution based on the first target demand combination, and simultaneously updating parent roll material information and project demand information, wherein each demand in the first target demand combination meets the minimum length difference between demands;

distributing the residual main demands based on the residual master batch material information and carrying out cutter distribution so as to complete the distribution of the main demands;

the cutting instruction carries user information; the cutting method further comprises the following steps: judging whether the user information is compliance user information, wherein the user information is specifically a physical address of a user or an account number of the user; if yes, logging in the system, and uploading the master batch material information and the project demand information;

distributing the residual main demands based on the residual master batch material information and carrying out cutter distribution so as to complete the distribution of the main demands, wherein the method comprises the following steps:

2. The cutting method according to claim 1, wherein after obtaining the master batch material information, the project demand information, the shortest meters, and the minimum length difference between demands, further comprising:

3. The cutting method according to claim 2, wherein the determining the effective cutting length based on the required meters of the main requirement, the parent roll length, and the shortest meters comprises:

when the cutting length is smaller than the shortest meter, judging whether a target cutting length exists, wherein the target cutting length is a length which enables the parent roll to meet the shortest meter in the range of the required meters; if the target cutting length exists, the target cutting length is taken as the effective cutting length;

if the target cutting length does not exist, judging whether the maximum length exists in the preset range; if the maximum length exists, the maximum length is taken as the effective cutting length, and if the maximum length does not exist, the effective cutting length is determined to be absent;

4. A cutting method according to any one of claims 1 to 3, wherein assigning a first target demand combination meeting a width utilization requirement to a parent roll according to the demand width of all the primary demands comprises:

determining a shortest cut length from the cut lengths of all the primary demands within the target demand combination; when the same main demand in the target demand combination appears for multiple times, the cutting length of the main demand appearing for multiple times is the ratio of the required meter number to the required times;

if the shortest cutting length is smaller than the shortest meters, or the rest required remaining length in the target required combination after cutting according to the shortest cutting length is smaller than the minimum length difference between the requirements, determining the target required combination as an invalid combination; re-determining the combination with the second largest width utilization as a target demand combination, and re-determining the first target demand combination;

And if the shortest cutting length is not less than the shortest meters, or the rest of the required remaining lengths in the target required combination after cutting according to the shortest cutting length is not less than the minimum length difference between the requirements, determining the target required combination as the first target required combination.

5. The method of claim 4, wherein the configuring the knife based on the first target demand combination comprises:

if so, the parent roll length is taken as a first effective cutting length,

the knife is configured based on the first effective cutting length.

6. A cutting method according to any one of claims 1 to 3, wherein the obtaining of the second target demand combination based on the length multiple relationship between the demanded meters of the main demand comprises:

Determining the shortest required meter number;

7. The method of claim 6, wherein said determining a parent roll corresponding to said second target demand combination and performing a knife assembly comprises:

if the second effective cutting length meeting the shortest required meter is determined from the range of the required meters corresponding to the shortest required meters;

starting from the widest demand width in the main demands with length multiple relation, sequentially adding the main demands into a cutter matching combination;

8. The method of claim 7, wherein prior to the matching the parent rolls corresponding to the second target demand combination based on the matching combination and the second effective cutting length, further comprising:

9. An electronic device, comprising:

at least one processor;

a memory;

at least one application program, wherein the at least one application program is stored in the memory and configured to be executed by the at least one processor, the at least one application program configured to: performing the method of any one of claims 1-8.