Product production planning method and device, and storage medium

A product production planning device, comprising:

• a processing unit, wherein
• the processing unit is configured to determine material types of materials;
• the material types include a first type of old materials and a first type of new materials;
• the processing unit is further configured to determine a production plan of products to be produced based on the old materials of the first type and the new materials of the first type included in the materials, according to a linear programming model and the material types;
• the linear programming model includes a constraint condition and an objective function;
• the production plan includes a first-stage production plan and a second-stage production plan, the first-stage production plan is a production plan for producing products to be produced according to the old materials of the first type, and the second-stage production plan is a production plan for producing product to be produced according to the new materials of the first type;
• wherein the objective function is an objective function that maximizes a product output of first sub-products and maximizes a product output of second sub-products;
• the first sub-products are products planned to be produced in the first-stage production plan;
• and the second sub-products are products planned to be produced in the second-stage production plan;
• wherein that the processing unit is further configured to determine a production plan of products to be produced according to a linear programming model and the material types includes:
• determining the first sub-products and the second sub-products according to the material types;
• allocating materials for the first sub-products according to the linear programming model to determine the first-stage production plan;
• updating constraint conditions of the linear programming model according to the first-stage production plan;
• and
• allocating materials for the second sub-products according to the updated linear programming model to determine the second-stage production plan.