
第42卷第8期 Vol.42No.8
假压技木
FORGING & STAMPING TECHNOLOGY
LFT-D模压生产线上下料的关键技术
李永革,代士喜,汪义高,凌家友
(重庆江东机械有限责任公司,重庆404020)
2017年8月 Aug-2017
摘要:为了解决熔融状态LFT-D难以拾取及上料效率低下的问题,通过采用上下料一体端拾器可提升效率15%-20%。同时,采用短距离自动化拾取,减少了热熔LFT-D的湿度散失,从而降低能耗。将坏料从拾取位置转运至上料位置湿度下降可控制在15%以内,提升了产品成形质量,废品率减少4%-10%。通过调整刺针倾角和行程,解决了材料高温及流动性难以拾取的问题。同时,横臂气动线性模组可在机器人运行时自动调节双工位间距,可适应取料与上下料工位间距不同的情况,端拾器主杆及横纵臂采用轻质铝合金材料,有效减小机器人负载。
关键词:LFT-D;模压生产线:上下料;端拾器;轻量化 DOI: 10. 13330/j. issn. 1000-3940. 2017. 08. 021
中图分类号:TH122
文献标识码:A
文章编号:1000-3940(2017)08-0102-05
KeytechnologyoffeedingandunloadinginLFT-Dmoldingline
Li Yongge, Dai Shixi, Wang Yigao, Ling Jiayou
( Chongqing Jiang Dong Machinery Co. , Ltd. , Chongqing 404020, China)
Abstract : In order to solve the problems of pick-up difficully and low efficiency of feeding for LFT D in molten condition, the efficiency could be improved by 15% 20% by the feeding and unloading integral tooling. At the same time, the temperature dissipation of hot mol-ten LFT D was reduced by taking short distance automatic picking up, and the energy consumption was decreased. Therefore, the tem perature drop of billet from the picking position to the feeding position can be controlled within 15% , and the forming quality of product was improved with the reject rate reduces from 4% to 10% , Thus , the high temperature and the flowability of the material pick-up diffi-a isnpe ute apo itau ageunaud ms a ca aues a ty apaa o aons pu asur a sugsnpr kq paos an qna double-station spacing automatically when the robot is running, which can be: adapted to the different distances between the picking station and the loading station. Furthermore, the main rod and the longitudinal arm of pole are made of lightweight aluminum alloy material, and the load of robot is reduced effectively.
Key words : LFT D; molding line; feeding and unloading; tooling; light weight
LFT D ( Long Fiber Reinforce Thermoplastic Direct)是指纤维与热塑性树脂熔体在线复合直接模塑生成长纤维增强热塑性复合材料的成形技术。带见成形技术有LFT-D模压与LFT-D注塑两种,广泛用于制作结构及半结构汽车部件,对于汽车轻量化有突出贡献")。LFT-D模压技术省去了GMT 与LFT-G中间半成品工序,原材料选择更为广泛,更易自动化生产与质量管控(2),LFT-D模压生产线中上下料雷要解决复合材料熔融状态下难以拾取的间题以及LFT=D端拾器级纵臂双工位间距调节间
收稿日期:20170308;修订日期:20170512 基金项目:国家科技重大专项(SK201301A21-04)作者简介:李永革(1968-),男,硕士,工程师 E-mail: deshill@ 163. com
万方数据
题。本文就LFT-D模压生产线中上下料关键技术进行探讨。
LFT-D模压工艺概述
LFT-D的密度为1.1~1.4g+cm-3,具有轻质高强、耐疲劳、耐腐蚀、耐冲击、降噪减震、翘曲度低、尺寸稳定、成形周期短、开模费用低等特点,被广泛应用于汽车结构及半结构件,LFT-D 广泛用于Audi,BMW,Citroen,Fiat,Ford及Mer-cedes等国际知名品牌汽车上[3]。
复合材料在加工时聚合物只需一次加热,并可根据工艺调整材料及配方,同时可在线回收;此外,加热后的聚合物为熔融状态,有较强的流动性,具有优越的成形性能4。LFT-D模压生产线整个工