摘 要
改革开发以来，林产工业得到较快发展，无论是生产技术水平和装备水平，还是产品质量，都有明显提高。但其发展的总体水平与国民经济的发展还很不适应，与发达国家同行业相比还有很大差距，而刨花板气流铺装机作为一种新颖的、高效生产刨花板的木材机械，具有操作使用方便，生产效率高，刨花应用效率高，生产板坯质量高等特点。国外对刨花板气流铺装机研发设计很早，起点和水平都较高，整机普遍具有功率大且操作方便等优点，现已有成熟的系列化产品。但相比于国外产品，我国刨花板铺装机可靠性不甚理想，且生产板坯质量不高，在使用过程中整机的工作效率还有待提高。目前，国内外刨花板铺装技术普遍存在着一个问题，气流铺装箱内的气流稳定性不能达到一个很理想的状态，因此很有必要对刨花板气流铺装机正压风量均匀装置进行优化设计。
关键词：气流铺装机；均匀装置；刨花板
Summary for Positive Pressure Air Flow Uniform Device of Particleboard Airflow Paver
Abstract
Since the reform and development, the forest industry has been developed rapidly, whether it is the level of production technology and equipment, or the quality of products, have been significantly improved. However, the overall level of its development and the developmence of the national economy is still very unsuitable, compared with the developed countries in the same industry there is still a big gap, and particleboard airflow paving machine as a novel, efficient production of particleboard wood machinery, with easy operation and use, high production efficiency, high application efficiency of shavings, the production of slab high quality characteristics. Foreign to the Particleboard airflow paving machine; design is very early, the starting point and level are high, the whole machine generally has the advantages of high power and easy to operate, and now has a mature series of products. Compared with foreign products, China#39;s particleboard installation reliability is not ideal, and the production of slab quality is not high, in the process of use of the whole machine#39;s work efficiency has yet to be improved. At present, there is a common problem in the technology of particleboard paving at home and abroad, and the airflow stability in the air flow packing box can not reach a very ideal state, so it is necessary to optimize the design of the uniform device of the positive pressure air volume of the particleboard airflow paving machine.
Key Words：Airflow paver; Uniform device; Particleboard
- 研究的目的及意义
在刨花板生产过程中，刨花铺装是一个相当重要的环节，表层的铺装则是直接影响到表层物理性能、后续砂光质量、表层外观质量等性能指标。表层气流铺装机是通过利用气流分选的原理，将表层混合刨花连续均匀的进行分级铺装，达到铺装平整、横向均匀、形成致密的表层结构的实际效果；因此，气流的均匀性和可控性突显得尤为重要。而一般的结构形式往往不能很好的解决气流均匀性的问题，当控制不恰当时，则容易形成紊流、乱流等不良现象，直接影响到表层刨花的铺装质量。因此提高刨花板气流铺装机铺装箱体内气流场均匀稳定性，将直接影响铺装板坯表面质量。
铺装机气流特性对于铺装成型出平整、均匀的板坯至关重要。铺装成型箱内一定的均匀气流速度场是保证板坯均匀性、对称性的关键。若铺装机内气流紊乱，使刨花铺装不平整，将会导致预压阶段压制的板坯内部的密实性不均匀，在实际使用的过程中容易出现断裂的现象。为了提高刨花板内部横向密实性，同时提高其内部结合力，通过对刨花板气流铺装机正压风量均匀装置优化设计，可使得铺装箱体内气流场均匀稳定，使板坯表面质量一次定型，避免在使用过程中发生断裂的现象。因此，刨花板气流铺装机的研究与发展对我国木材工业机械的发展具有重大的推动作用[[1]]。
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