Design Description
- This plan is for a daily production of 100m ³ furniture board project, with an annual production capacity of 30000 m ³ calculated based on 300 working days per year.
1.1 The production workshop is 136 meters long and 64 meters wide, with a total area of approximately 8704 square meters. It simulates a steel structure factory with a column spacing of 8 meters, a span of 32 meters, and a height of 6 meters;
The boiler workshop is 39 meters long, 12.4 meters wide, and 6 meters high, with a total area of approximately 483 square meters;
The glue making workshop is 23 meters long, 12.4 meters wide, and 12 meters high, with a total area of approximately 285 square meters;
The total construction area is 9472 square meters.
1.2. The workshop layout includes the entire process from rotary cutting of logs to storage of finished products.
- Product name, specifications, materials, production capacity
2.1. Product Name: Multi layer solid wood furniture plywood.
2.2 Specifications and Dimensions
2.2.1. Size: 2440mm * 1220mm.
2.2.2. Product thickness: 5-25mm.
2.3 Material situation: The diameter of the logs is 150mm-1500mm.
2.4 Design Capacity: Daily production capacity of 100m ³ (approximately 1866 sheets calculated based on an 18mm, 11 layer billet structure), with a dual shift work system of 20 hours per shift (excluding drying and hot pressing processes).
- Production process
3.1. The project adopts the form of whole sheet one-time assembly, and the design plan follows the design concept of using fewer forklifts, while also taking into account production capacity requirements and plant utilization.
3.2. Rotary cutting process: Select an eight foot card cutting machine, an eight foot card free rotary cutting machine, or a four foot card cutting machine and a four foot card free rotary cutting machine combination production line according to the diameter grade of the logs.
3.2.1. The eight foot card rotary cutting machine is used to cut panels (0.8-1.0mm) or 8 * 4-foot long middle boards. The remaining wood cores are transported to the eight foot card free rotary cutting machine for rotary cutting of 8 * 4-foot long middle boards (some 8 * 2-foot long strip boards);
3.2.2. A four foot card cutting machine is used to cut 4 * 8-foot whole piece short medium plates or 4 * 2-foot four piece short medium plates. The remaining wood cores are transported to a four foot card free cutting machine for cutting 4 * 8-foot whole piece short medium plates or 4 * 2-foot short medium plates;
3.2.3. Residual materials such as round wood veneer are centrally transported to a drum cutter for crushing, and then transported by a scraper conveyor to a collection area as boiler fuel.
3.3 Drying process: According to production capacity requirements, a three-layer 16+2 section one layer mesh belt+two-layer roller combination dryer is selected for drying different purposes of rotary cut veneers (mesh belt drying panel, long medium board, 8-foot long strip board, roller drying 4 * 2/8-foot short medium board). In addition, automatic drying and automatic dehumidification can be achieved, which can effectively save labor, reduce labor, reduce material transportation, and ensure uniform and reliable moisture content of the veneer.
3.4 Raw material preparation process
3.4.1. 4 * 2 foot single boards are spliced into a whole short and medium board using a four foot horizontal splicing machine, which can achieve automatic splicing and automatic stacking, with a high degree of automation throughout the entire process, reducing labor intensity for workers;
3.4.2. The eight foot long single board is spliced into a whole long medium board using an eight foot horizontal splicing machine, which can achieve automatic splicing and automatic stacking, with a high degree of automation throughout the entire process, reducing the labor intensity of workers.
3.4.3. Equipped with two excavator machines for repairing defects (holes, scars) in the entire long and short medium plates by rotary cutting, improving the quality level of the veneer surface to meet production process requirements.
3.5. Logistics turnover without the need for forklifts has been achieved through billet assembly, cold pressing, core repair, and hot pressing.
3.6. Assembly process: An eight foot four roll glue coating machine is used to assemble the whole sheet of the billet, including short and medium board glue coating, panel, and long and medium board dry laying. The production line layout also includes glue coating layer and dry laying layer forklift feeding port;
3.7 Core repair process: After cold pressing, the slab is inspected and repaired on the ground roller line, and then hot pressed to ensure the surface quality of the slab.
3.8 Hot pressing process: A 15 layer manual loading and unloading hot press machine is selected, and each hot press machine is equipped with a drying rack to improve the cooling effect of the board. (One 15 layer laminating machine is reserved and equipped with a standing lifting platform).
3.9. The finished product uses a reciprocating fully automatic longitudinal and transverse sawing machine, which realizes automatic board loading and stacking functions.
3.10. Fixed thickness sanding process: This process uses a single machine single-sided three sand frame sanding production line (fixed thickness and polishing), which can achieve automatic feeding, automatic board straightening, automatic fixed thickness sanding, automatic flipping, and automatic stacking. Through the combination of three sand frames, the thickness is fixed first and then polished, effectively improving the sanding quality and efficiency of the slab.
3.11 Dust removal system:
3.11.1 The dust removal fan adopts intelligent fully automatic control. The controller synchronously adjusts the fan frequency based on the wind pressure transmitter signal to ensure that the fan maintains the minimum and optimal energy consumption while ensuring the real-time required air volume in the main pipeline. Whole system energy-saving: 20% to 50%, with obvious energy-saving advantages!
3.11.2 Galvanized sheet module woodworking induced draft fan, with unique design and manufacturing, the fan has a delicate, beautiful appearance and does not change color. The negative pressure design of the dust removal fan is used, and the material does not pass through the fan, resulting in smoother operation, no wear and tear, and durability. After installing a muffler on the dust removal main fan, the noise is reduced!
3.11.3 Pipeline Network: Double sided galvanized welded explosion-proof pipeline, finely calculated to multiple specifications, balanced and accurate air distribution, high strength, corrosion resistance and durability! Galvanized plate accordion elbow is mechanically formed, and oblique insertion, underpants, and tee pipes are machined for high strength, corrosion resistance, and durability!
3.11.4 Intelligent Control
⑴. System support: PLC~intelligent automatic program linkage control, all electrical appliances and electromechanical switches are set according to the sequence and delay time of the program to ensure the requirements of the dust removal process. ⑵ The temperature detection device of the dust collector detects a temperature exceeding the set value, automatically opens the spray solenoid valve, automatically closes the main fan, and the automatic alarm sounds The system level detector can automatically stop the entire system and sound an alarm when the level in the last storage tank exceeds the set level The system is equipped with rotation axis detection and chain detection. When the rotating shaft stops or the chain falls off, the entire system will automatically stop and the alarm will sound.
3.11.5. Equipped with main spark detection device.
3.11.6. Dust collector box matching: several sets of gravity explosion-proof doors, several sets of snap on explosion-proof inspection doors, just in case. Compliant with the new national environmental regulations!
3.11.7. Exhaust height of dust removal system:+15m+lightning rod from the ground, in compliance with national environmental regulations!