The competition between furniture enterprises is no longer focused on the price of raw materials, the advanced level of production equipment and the level of design, but on time and profit margins. The edge banding machine can integrate multiple processes such as milling, end cutting, slotting, chamfering, sanding, gluing, and pressurizing. According to the processing effect, the corresponding series of modular programs are designed to reduce the number of benchmark calibration and form a flexible combination of intelligent processing equipment.
The CNC machining center has high accuracy and strong comprehensiveness. It can perform linear and curved edge banding, end trimming, edge chipping, tracking and fillet trimming and other functions. It has a high-speed spindle motor and tool library for automatic tool replacement, which can quickly convert tools and realize three-axis/four-axis/five axis linkage control; The high-performance laser edge banding equipment is equipped with a scanning storage device. By scanning the edge banding process parameter information, manual debugging is not required when replacing the edge banding strip, which reduces the human error and makes the edge banding quality more stable.
3.3 Edge banding equipment and software shall be more versatile
The matching between the edge bonding equipment hardware and the control system software is single. With the increase of the number and types of processing, the software also needs to be developed and upgraded synchronously. At the same time, the ability of self-developed precision equipment should be enhanced, and the compatibility and universality of edge bonding equipment and software should be enhanced. An open platform for sharing software can be established to facilitate data modification and other operations between devices at any time.
3.4 Optimization and promotion of edge banding machine production line
A complete edge banding machine production line is composed of feeding device, edge banding machine, roller table, transportation equipment and discharging device. Whether it is in the process of edge banding or before or after edge banding, it will affect the overall working efficiency of processing. Therefore, it is necessary to comprehensively improve the front end, middle end and rear end of edge banding. As shown in the figure below.
(1) Establish plate and tool information base and deepen group technology
Before edge banding, it is necessary to establish a simple and orderly tool library and a corresponding information library for the plate, so that it can be switched freely. The tool usage frequency shall be recorded and updated in time to ensure the cutting accuracy. At the same time, it is necessary to establish a database of edge banding materials, tools and processing technology, which can effectively make all wood based panels information parameters compatible in the entire plant system. Flexible manufacturing is completed through computer numerical control processing machinery equipment and auxiliary systems. In addition, it is also necessary to establish a coding system for materials, tools, etc., to conduct warehousing, outbound and consumption statistics by coding finished products, semi-finished products and other plates, tools, etc., improve the database of computer management, standardize barcode information, and improve the accuracy of information.
(2) Simulation of edge bonding production line and optimization of inter factory layout
According to the different number of edge banding strips, the steering mechanism can be designed by simulating the edge banding production line. According to the comprehensive factors such as the production rhythm, the transportation speed of the conveyor belt and the floor area of the edge banding equipment, the model is established on Solidworks software and the force of the steering mechanism is analyzed. At the same time, the dynamic simulation of the main components is carried out on ADAMS software, and the edge banding machine processing is reasonably arranged according to different edge banding methods; Combining the function command of neural network toolbox to carry out simulation training and find out the relationship between it and the edge bonding time can shorten the working time of edge bonding and improve the processing efficiency. The trained neural network has good generalization ability and fault-tolerant ability, which can provide guidance for working hours of edge bonding.
3.5 Middle end of edge banding
(1) Real time transmission of management and production information, remote control
The intelligent production management line can automatically formulate the optimal production plan according to the edge bonding process, automatically adapt to the changes of workpiece types and production batches, so as to obtain the maximum utilization rate of the machine tool. It can also remotely control according to the plan, so that its operation data can be transferred to each edge bonding machine, realizing automatic detection of the workpiece and automatic tool compensation. The reasonable use of flexible manufacturing system can make it clear the handover process between the front end and rear end of the edge banding production line and the edge banding process as a whole, so as to achieve comprehensive and effective control. For material storage and transportation, tracking monitoring, machine tool processing, information communication and computer control, it can also realize automatic operation and real-time scheduling management.
(2) Optimize manual loading and unloading, and transport with intelligent manipulator
Manual loading and unloading of plates will cause manual operation fatigue. Changing bad habits can effectively reduce fatigue and shorten the time difference between loading and unloading. Take the operator of the single side linear edge banding machine as an example. Through the decomposition analysis of continuous actions, the simulation software 3DSPSS is used to build a virtual factory environment and output the relevant data of body fatigue in various parts of the human posture. The normal upright or bending leg forward bending posture can reduce the pressure on the lumbar intervertebral disc.
CNC multi station automatic loading and unloading mechanical arm designed based on DeviceNet network, the PLC based controller can realize the control of the multi station mechanical arm, improve the operability and intelligence of the equipment, and effectively solve the problems of low efficiency of the traditional mechanical arm and difficult multi station processing; The automatic loading and unloading truss robot combines flexible joints and two axes of pneumatic gripper to make it have the advantages of high speed and accurate positioning. The bus interface can build a CNC machine tool group, and the control system is easy to operate and low in cost, which is conducive to the intelligent transformation of production equipment in small and medium-sized enterprises.
3.6 Back end of edge banding
(1) Machine self-cleaning
Impurities will affect the edge sealing quality. A large amount of chips will be produced during the cutting process. It is necessary to set up a synchronous dust suction device and a conical clamping sleeve type milling cutter. In combination with intelligent path tracking, the chip residues can be removed in time to enhance the tool durability. Self cleaning detection and treatment devices shall be added at the rubber box, rough/finish milling device of side belt, dust exhaust pipe of scraper device, polishing unit and conveying track to improve the operation accuracy of equipment.
(2) Machine vision quality inspection
At present, the quality inspection of the edge sealing products in most furniture factories in China is manual visual inspection, and the unqualified products will be reworked. However, it is still unable to stop the phenomenon of employees passing off inferior products as high-quality ones, which will affect the customer experience. The intelligent equipment can use image recognition technology to automatically inspect the edge sealing quality of finished products by using the automatic plate defect recognition system and the automatic loading and unloading and sorting system, so that the machine can replace manual verification, save manpower and reduce errors, and improve the processing process of the edge sealing production line.
4. Conclusion
With the rapid development of wood based panels furniture industry, edge banding technology innovation is advancing with the times. There are many factors that affect the edge sealing quality and efficiency of wood based panels furniture parts. Only by improving the enterprise’s own product standards, strict requirements for each step of the process, and continuous practice and exploration through advanced information technology, can the ideal product quality and higher production efficiency be achieved. In the future, it is more necessary to make overall optimization in material selection, manufacturing technology, management mode and other aspects, so as to realize the vision that furniture manufacturing industry will gradually integrate computer technology and develop toward intelligent direction.
