刨花模压托盘模具的结构改进设计与托盘性能测试  

Structure improvement design and tray performance test of molded particle pallet

作　　者：安勤玉 刘方成 刘乐群 俞友明[1] 赵莹[2] AN Qinyu;LIU Fangcheng;LIU Lequn;YU Youming;ZHAO Ying(College of Chemistry and Materials Engineering,Zhejiang A&F University,Hangzhou 311300,China;Zhejiang Academy of Forestry,Hangzhou 310023,China;Zhejiang University of Technology Engineering Design Group Co.Ltd.,Hangzhou 310004,China)

机构地区：[1]浙江农林大学化学与材料工程学院,杭州311300 [2]浙江省林业科学研究院,杭州310023 [3]浙江工业大学工程设计集团有限公司,杭州310004

出　　处：《林业工程学报》2023年第2期82-86,共5页Journal of Forestry Engineering

基　　金：浙江省省院合作项目(2017SY07)。

摘　　要：托盘是现代物流体系中不可或缺的重要组成部分,但是现有刨花模压托盘存在承载面断裂、表面毛刺多、支撑腿折损等问题,大大影响了其使用性能。针对当前模压托盘存在的问题,设计了专用模具的结构、加强筋、凹孔、模具辅助装置等。笔者采用创新性的设计思路,整体设计分为凸模、凹模两大部分,其中在加强筋设计部分,创新地采用直线型和弧线型两种加强筋,以此达到生产过程中力的有效传递。在模具凹孔设计时,将模具凹孔设计成阶梯形,倾斜角度A为75°,使得支撑腿受力变形最小。实际应用表明,以上设计不仅有效解决了生产过程中托盘不易取出的难题,还提高了成型托盘的模压生产效率和极限承载能力,对于模具改进后托盘极限承载能力相对于传统改进前提高了12.2%。同时,利用所设计的模具生产出的托盘,表观无凹坑、变形、掉屑、发黑现象。设计结果符合预期,成型托盘表面毛刺较少,极限承载能力达到3 220.5 kg,能够满足实际生产要求。Pallets are an indispensable part of the modern logistics system, but the current existing molded particle pallet have many problems, such as bearing surface fracture, surface burrs, support leg breakage, which greatly affect the performance of pallets. In view of the problems existing in the current molding tray, the structure, reinforcing rib, concave hole, and auxiliary device of the special die were designed. This study adopted innovative design ideas, and the overall design was divided into two parts, i.e., male die and female die. In the stiffener design part, two types of stiffeners, linear and arc, were innovatively used to achieve effective force transmission in the production process. During the design of the die concave hole, the die concave hole was constructed to be stepped, and the tilt angle A was 75°, so that the force deformation of the support leg was minimized. The practical application showed that the above design not only effectively solved the problem that the pallet was not easy to take out in the production process, but also improved the molding production efficiency and the ultimate bearing capacity of the molded pallet. The ultimate bearing capacity of the pallet after the mold improvement was 12.2% higher than that before the improvement. At the same time, the pallet was produced using the mold designed in this study, and there was no dent, deformation, chip loss and blackening on the surface. The design results were in line with expectations. The formed pallet had fewer surface burrs and the ultimate bearing capacity reached 3 220.5 kg, which can meet the actual production requirements.

关 键 词：刨花模压托盘 模具结构 加强筋 凹孔 托盘性能 

分 类 号：TQ330.41[化学工程—橡胶工业]