CN103568277A - 一种eva胶加热挤出装置 - Google Patents

一种eva胶加热挤出装置 Download PDF

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Publication number
CN103568277A
CN103568277A CN201310530514.3A CN201310530514A CN103568277A CN 103568277 A CN103568277 A CN 103568277A CN 201310530514 A CN201310530514 A CN 201310530514A CN 103568277 A CN103568277 A CN 103568277A
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cylinder
machine barrel
eva
electric heating
processing unit
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顾正忠
陈忠斌
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SUZHOU TECHNIQUE SOLAR FILM MATERIAL CO Ltd
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SUZHOU TECHNIQUE SOLAR FILM MATERIAL CO Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/83—Heating or cooling the cylinders
    • B29C48/832—Heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/397—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using a single screw
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/92114—Dimensions
    • B29C2948/92161—Volume or quantity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/92209—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92361—Extrusion unit
    • B29C2948/9238—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/924—Barrel or housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92895—Barrel or housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B29L2007/008—Wide strips, e.g. films, webs

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

本发明涉及一种EVA胶加热挤出装置，属于高分子材料制造技术领域。包括机筒和设在机筒内的由电机驱动的螺杆；机筒外壁上均匀贴装有电加热片；机筒内避开螺杆的空间内均匀间隔设有温度传感器；温度传感器输出端串联有模/数转换模块后连接中央处理器的数据输入端；机筒的底部开口处设有流量计，所述流量计的输出端连接所述中央处理器的信号输入端；电加热片受中央处理器控制。本发明提供的EVA胶温控加热挤出装置，在机筒外壁设有电加热片，用以加热和维持机筒内的EVA胶的温度。机筒内部还设有温度传感器，通过温度传感器采集温度信号，由中央处理器根据温度自动控制加热片的功率，防止过热。

Description

一种EVA胶加热挤出装置
技术领域
本发明涉及一种EVA胶加热挤出装置，属于高分子材料制造技术领域。
背景技术
现有的EVA胶膜制程中，均采用将胶粒压入管道，混合添加剂，然后加热熔化，再由挤出机挤出，然后由压辊压膜冷却成型。但是现有的挤出机多数不具有加热功能，或者具有加热功能，但是不具有温度调控的功能。
发明内容
本发明解决的技术问题是：提出一种具有加热并可调节温度的EVA胶加热挤出装置。
为了解决上述技术问题，本发明提出的技术方案是：一种EVA胶加热挤出装置，包括机筒和设在机筒内的由电机驱动的螺杆；所述机筒外壁上均匀贴装有电加热片；所述机筒内避开所述螺杆的空间内均匀间隔设有温度传感器；所述温度传感器输出端串联有模/数转换模块后连接中央处理器的数据输入端；机筒的底部开口处设有流量计，所述流量计的输出端连接所述中央处理器的信号输入端；所述电加热片受所述中央处理器控制。
本发明进一步的完善是：所述温度传感器是由一个热敏电阻与三个固定值电阻组成的惠斯通电桥构成。本发明采用惠斯通电桥以保证对温度的测试的精准。
本发明更进一步的完善在于：所述惠斯通电桥与所述模/数转换模块之间依次串联有差分放大器和低通滤波器。通过差分放大器的放大和滤波器的滤波，进一步保证测试的准确性。
本发明带来的有益效果是：本发明提供的EVA胶温控加热挤出装置，在机筒外壁设有电加热片，用以加热和维持机筒内的EVA胶的温度。机筒内部还设有温度传感器，通过温度传感器采集温度信号，由中央处理器根据温度自动控制加热片的功率，防止过热。同时，机筒的出口处设有无接触式的超声波流量计，EVA胶的融化程度越高，其流动性越好，这样即可根据流量判定当前融化度是否合格。是否需要增加或者降低加热功率。
附图说明
下面结合附图对本发明的作进一步说明。
图1是本发明一个优选实施例的结构示意图。
图中标号示意如下：1-机筒，2-螺杆，3-电加热片，4-温度传感器。5-流量计。
具体实施方式
实施例
本实施例的一种EVA胶加热挤出装置，如图1所示，包括机筒1和设在机筒1内的由电机驱动的螺杆2；机筒1外壁上均匀贴装有电加热片3；机筒1内避开螺杆2的空间内均匀间隔设有温度传感器4；温度传感器4输出端串联模/数转换模块后连接到中央处理器的数据输入端；机筒1的底部开口处设有流量计5，流量计5的输出端连接中央处理器的信号输入端；电加热片3受中央处理器控制。
本实施例中的温度传感器4采用由一个热敏电阻与三个固定值电阻组成的惠斯通电桥电路。为了让温度测试更为准确，惠斯通电桥与模/数转换模块之间依次串联有差分放大器和低通滤波器。通过差分放大器的放大和滤波器的滤波，让信号更准确。
工作时，机筒1上方开口连接加热管道，经过加热管道融化的EVA胶被注入，然后由电机驱动的螺杆推进，将EVA胶从下方开口挤出至冷却辊。为了防止EVA胶在挤出装置内降温，电加热片3用以维持其温度，同时内部的温度传感器4监测EVA胶的温度，如果温度过低，则由中央处理器的PWM信号控制电加热片4增加功率加热。如果温度过高，则降低功率加热。以此实现EVA胶全程维持其温度。
由于EVA胶融化程度越高，其流动性越好，所以流量就越大，这样，在机筒1底部出口处设置无接触式的超声波流量计5，以监控流量，通过流量即可判定当前加热是否需要调整。用以弥补温度传感器4的不足或偏差。
本发明不局限于上述实施例，凡采用等同替换形成的技术方案，均落在本发明要求的保护范围内。

Claims (3)

1. 一种EVA胶加热挤出装置，包括机筒和设在机筒内的由电机驱动的螺杆；其特征在于：所述机筒外壁上均匀贴装有电加热片；所述机筒内避开所述螺杆的空间内均匀间隔设有温度传感器；所述温度传感器输出端串联模/数转换模块后连接中央处理器的数据输入端；机筒的底部开口处设有流量计，流量计的输出端连接中央处理器的信号输入端；所述电加热片受所述中央处理器控制。
2.如权利要求1所述EVA胶加热挤出装置，其特征在于：所述温度传感器是由一个热敏电阻与三个固定值电阻组成的惠斯通电桥。
3.如权利要求2所述EVA胶加热挤出装置，其特征在于：所述惠斯通电桥与所述模/数转换模块之间依次串联有差分放大器和低通滤波器。
CN201310530514.3A 2013-11-01 2013-11-01 一种eva胶加热挤出装置 Pending CN103568277A (zh)

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CN105965895A (zh) * 2016-06-01 2016-09-28 深圳万为智能制造科技有限公司 3d打印用多重回旋挤出机及控制系统
CN106079434A (zh) * 2016-06-01 2016-11-09 深圳万为智能制造科技有限公司 3d打印用打印头、控制系统、3d打印机及打印方法

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105965895A (zh) * 2016-06-01 2016-09-28 深圳万为智能制造科技有限公司 3d打印用多重回旋挤出机及控制系统
CN106079434A (zh) * 2016-06-01 2016-11-09 深圳万为智能制造科技有限公司 3d打印用打印头、控制系统、3d打印机及打印方法
CN105965895B (zh) * 2016-06-01 2018-10-09 深圳万为智能制造科技有限公司 3d打印用多重回旋挤出机及控制系统
CN106079434B (zh) * 2016-06-01 2019-04-12 深圳万为智能制造科技有限公司 3d打印用打印头、控制系统、3d打印机及打印方法

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