PDMS基微结构复合材料自动热压印成型设备

Development of PDMS-Based Surface Micro-Structure Composite Automatic Plate Hot Stamping Forming Equipment

介绍了PDMS基表面微结构复合材料自动平板热压印成型的工艺过程,研制了双工位全自动平板热压印设备,实现了自动化生产PDMS基功能型复合材料。结合共混后的均相物料黏稠度较大、输料困难等问题,设计了"子弹填充式"精确输料系统。为实现不同工位加工以及物料在压印过程中均匀受力,设计了分散模及半固定半溢式压缩模。结合上下模等温压印时出现的"提前固化现象",提出差温平板热压印的解决方法,对上下模采用独立的温度控制。研制的自动平板热压印设备设计的最大压印面积可达210 mm×300 mm,大幅提高了生产效率、制品精度,取得了较好的效果。

The process of plate hot stamping of PDMS-based surface microstructure composite was proposed.A doublestation automatic plate hot stamping equipment was developed,which realized the automatic production of PDMS-based functional composite.Aiming at the problems such as large viscosity of homogeneous material,difficulty of conveying material and so on,a precise conveying system named"bullet-filled"was designed.In order to achieve different station processing and material uniform force during the imprint process,the dispersion mold and semi-fixed semi-overflow compression mold were designed.A solution to the differential tempering hot stamping was proposed for the"pre-curing phenomenon"that occured when the upper and lower molds were isothermally imprinted.The designed automatic flat hot stamping equipment had a maximum embossing area of 210 mm×300 mm,which greatly improved production efficiency and product precision and had achieved very good results.