The system takes into account the following production features and constraints:
- The ability to make the best plywood bonding schemes according to various criteria (yield by volume or by grades, marginality, revenue, etc.);
- Constraints on veneer formats depending on the format of plywood;
- Constraints on permissible types of transverse and longitudinal veneer, depending on the grade of plywood;
- Constraints on allowable species of veneer, depending on the plywood species and possibility to make plywood from various species of veneer;
- Polishing and lamination of plywood;
- Constraints on plywood bonding depending on its thickness: the number of layers, the thickness of the jacket and internal layers, the types of internal layers;
- Ability to set several bonding schemes for one plywood thickness differing in veneer thickness and other;
- Accounting for veneer parameters: jacket grade, type, format, thickness, species, humidity;
- Accounting for veneer formats for raw and dry veneer;
- Accounting for plywood parameters: format, thickness, grade, species, lamination, tongue and groove, water resistance;
- Constraints on plywood, produced outside of ordered volumes;
- Ability to set shifts calendar and equipment activity;
- Orders priorities;
- Limiting the permissible formats of veneer for peeling machines and accounting for production capacity;
- Accounting for veneer grades distribution after peeling machines, depending on the species and veneer type;
- Limiting the permissible formats of veneer for drying kilns, taking into account raw material consumption coefficients for peeling chambers;
- Accounting for veneer grades distribution after drying kilns, depending on the warehouse, the type and humidity of the veneer;
- Accounting for the capacity of repairing machines and raw material consumption ratios
- Accounting for veneer grades distribution after repairing machines;
- Limiting permissible thicknesses and formats of veneer for edge-gluing machines, the ability to specify operations for changing the type of raw material for edge-gluing machines;
- Constraints on presses and bonding lines according to formats, grades and thickness of plywood produced;
- Accounting for the presses performance and bonding lines, depending on the plywood thickness;
- Accounting for plywood grades distribution after presses (grade "drops");
- Constraints on permissible formats for formatting machines;
- Accounting for formatting machines capacity, depending on the plywood format;
- Accounting for laminating machines capacity
The system takes into account the following requirements, parameters and constraints on shifts:
- The minimum and maximum average thickness of the produced plywood;
- The minimum and maximum volumes of products for grinding and thorn and groove;
- Minimum and maximum production volumes by grades, formats and thickness of plywood;
- Fixing production volumes for a given product on a certain press;
- Accounting for priority orders volumes to determine the order of their fulfillment by volumes;
- Accounting for equipment work and repair schedule;
- Limiting the “complexity” of creating a production program for a shift for equipment;
- Ability to create patterns of shifts
The system ensures that requirements and technological features are taken into account for scheduling:
- Accounting for shipment schedule of finished goods, and priority of production orders;
- Schedule of equipment operation - the possibility to set requirements and technological features for shifts, accounting for planned repair works;
- Availability of veneer, as well as expected deliveries;
- Minimum and maximum veneer storage times