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塑料片材挤出解决方案

2017-Nov-08

塑料片材挤出机

产品概述

我们的塑料片材挤出机是专门为生产优质塑料片材而开发的专业挤出设备,主要适用于PP(聚丙烯)和PS(聚苯乙烯)材料,主要作为热成型机的配套设备,为生产一次性塑料杯、饭盒、吸塑包装等热成型产品提供高标准、稳定、均匀的塑料片材。

该机采用先进的单螺杆挤出技术和精密模具设计,可稳定生产厚度和宽度可调的塑料片材,满足不同热成型工艺的多样化需求。集进料、熔化、挤出、压延和卷绕于一体,实现了自动化连续生产,大大提高了生产效率,降低了人工操作强度。

整机采用优质结构钢和耐磨合金材料,布局科学,结构紧凑,占地面积小,具有运行稳定、能耗低、易维护、使用寿命长等特点,是一次性塑料制品生产厂家建设片材挤出、热成型一体化生产线必不可少的核心设备。

我们根据客户的具体要求(如板材厚度、宽度、材料配方)提供个性化定制解决方案,并提供包括设备安装、调试、操作培训和售后维护在内的全流程技术支持,帮助客户降低生产成本,提高产品质量。

1.主机结构及部件

塑料片材挤出机采用模块化一体化设计,由6个核心系统组成,分工明确,拆卸维护方便,运行性能稳定:

1.1自动上料系统

由储料斗、螺旋给料机、变频电机和料位传感器组成,专为PP、PS颗粒状原料设计,可实现自动定量给料,避免人工操作造成的给料不均匀,保证挤出系统稳定的物料供应,有效防止物料堵塞和浪费。

1.2单螺杆挤出系统

它是整机的核心部分,由高精度螺杆、机筒、加热器和温控装置组成,螺杆采用38CrMOA1A优质氮化钢,
 表面合金喷涂,具有较强的耐磨性和耐腐蚀性;料筒采用分段加热和精确的温度控制,可充分熔化PP和PS原料,确保塑化均匀,为高质量的片材挤出奠定基础。

1.3过滤器和模具系统

包括液压换网器、精密过滤器和T型片材模具。液压换网器无需停机即可快速更换过滤网,保证连续生产;精密过滤器可有效去除熔融物料中的杂质,保证片材纯度;T型模具采用精密加工,模唇间隙可调,可精确控制片材厚度,挤出片材表面平整,厚度均匀。

1.4压延冷却系统

由三个精密压延辊、冷却水箱和风冷装置组成,用于对挤出的熔融板材进行定型和冷却。三个压延辊采用镜面抛光处理,光洁度高,可使板材表面光滑无毛刺;冷却水箱和风冷装置协同工作,快速冷却板材,防止板材变形,保证板材尺寸稳定性。

1.5牵引和绕组系统

由牵引辊、变频牵引电机和自动卷绕机组成,牵引辊采用可调压力设计,可稳定拉动冷却后的片材,保证牵引速度均匀;自动卷绕机可根据片材的厚度和柔软度调节卷绕张力,实现整齐、紧密的卷绕,便于片材的储存、运输和后续使用。

1.6电控系统

采用PLC可编程控制器、触摸屏人机界面、变频调速及故障报警系统,集温控、调速、送料控制、卷绕控制于一体,所有参数(如挤出温度、牵引速度、送料量)均可一键设置调整,操作简单易学,故障报警功能可及时提醒操作人员处理异常,确保安全稳定生产。

2.工作原理

塑料片材挤出机采用单螺杆挤出和连续压延成型的原理,整个工作过程全自动,主要分为5个步骤,专门针对PP和PS材料进行优化,确保片材的稳定性和质量:

1、自动上料:将PP或PS颗粒状原料放入储料斗,自动上料系统按设定参数定量稳定地将原料送入挤出系统的料筒。

2、熔化塑化:桶体分段加热,螺杆匀速旋转,对原料进行剪切、揉捏、推动,PP/PS原料在高温高压作用下,逐渐熔化塑化成均匀的熔融状态。

3、过滤&挤出:熔融料经过精密过滤器去除杂质,再通过液压换网器进入T型模具,在模具的作用下被挤出成连续的片状熔融料。

4、压延&冷却:将挤出的熔融板材送入三个压延辊成型,使板材表面光滑,厚度均匀;然后进入冷却水箱和风冷装置快速冷却,使板材凝固成型,保证尺寸稳定性。

5、牵引缠绕:冷却成型的片材由牵引系统匀速稳定牵引,然后自动缠绕机按设定的张力将片材缠绕成卷,完成塑料片材的整个生产过程。生产的片材可以直接送到热成型机进行后续加工。

3.主要特点

材料适应性:专业针对PP、PS材料,具有优化的挤出塑化参数,能充分发挥材料的性能,生产出的板材质地均匀、韧性高、成型性能好,完美匹配热成型工艺。

全自动:集自动送料、挤出、压延、冷却、卷绕于一体,实现无人值守连续生产,减少人工操作,提高生产效率,避免人工操作造成的质量错误。

 
精确控制:采用精确的温度控制和模具调整技术,板材厚度误差小(±0.02mm),表面光滑平整,无毛刺,无气泡,满足热成型原材料的高标准要求。

稳定节能:整机采用优质材料,运行稳定,故障率低,使用寿命长;采用变频调速技术,可根据需求调节生产速度,降低能耗,节约生产成本。

 
兼容性强:可与各类热成型机完美对接,形成片材挤出热成型一体化生产线;支持片材厚度(0.1-2mm)和宽度(500-1500mm)定制,满足多样化生产需求。

维护方便:模块化设计,部件划分清晰,拆卸维护方便;关键部件(螺杆、机筒、压延辊)耐磨耐腐蚀,降低维护频率和维护成本。

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