CN103624965A - 塑料管材挤出设备米重控制系统 - Google Patents

塑料管材挤出设备米重控制系统 Download PDF

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CN103624965A
CN103624965A CN201310464093.9A CN201310464093A CN103624965A CN 103624965 A CN103624965 A CN 103624965A CN 201310464093 A CN201310464093 A CN 201310464093A CN 103624965 A CN103624965 A CN 103624965A
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plc
control system
extruder
speed
meter
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王辉
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NINGBO FANGLI TECHNOLOGY Co Ltd
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NINGBO FANGLI TECHNOLOGY 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
    • B29C48/285—Feeding the extrusion material to the extruder
    • B29C48/286—Raw material dosing
    • 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
    • B29C2948/9218—Weight
    • 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
    • B29C2948/92333—Raw material handling or dosing, e.g. active hopper or feeding device
    • 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
    • B29C2948/9258—Velocity
    • 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
    • B29C2948/9258—Velocity
    • B29C2948/926—Flow or feed rate
    • 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
    • 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
    • B29C2948/92885—Screw or gear
    • 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
    • B29C2948/92933—Conveying, transporting or storage of articles

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

Abstract

本发明公开了一种塑料管材挤出设备米重控制系统，包括进料机、挤出机、牵引机，还包括工业操作屏、PLC和与PLC总线通讯的称重系统；工业操作屏用于将用户设定反映给称量系统，并显示参数；PLC和主控板之间利用RS485串行通讯接口进行数据的传输；PLC对牵引机和挤出机的速度进行控制，称重系统计算牵引机和挤出机的速度进行计算，并结合用户参数输入来对牵引机和挤出机的速度进行反馈。本发明是针对低端PLC开发的米重控制系统，克服了现有技术的米重控制系统对配套使用的PLC要求高，成本高，还克服了需要同时操作多个操作屏带来的复杂流程。

Description

塑料管材挤出设备米重控制系统
技术领域
本发明涉及塑料管材技术设备控制领域，特别涉及一种塑料管材挤出设备米重控制系统。
背景技术
目前使用的德国INOEX称量系统多为独立式，即由INOEX自带操作屏对其自身进行控制，这种显示屏成本较高。且客户自身设备还自带显示屏，造成重复投资；同时操作两个人机界面，操作流程繁杂。
国外使用集成式INOEX称量系统，采用的是PROFIBUS网络，profibus，是一种国际化．开放式．不依赖于设备生产商的现场总线标准，其技术基本成熟，但其对配套使用的PLC要求较高。因此，需要一种针对很多客户采用的较低端PLC系统的低成本方案。
发明内容
（一）要解决的技术问题
本发明的目的就是要克服上述缺点，旨在提供一种塑料管材挤出设备米重控制系统。
（二）技术方案
为解决上述问题，本发明提出一种塑料管材挤出设备米重控制系统，包括进料机、挤出机、牵引机，还包括工业操作屏、PLC和与PLC总线通讯的称重系统；所述工业操作屏用于将用户设定反映给称量系统，并显示参数；所述PLC包括CPU、模拟量输出模块和调速器模拟输入端，所述CPU用于接收速度控制指令并转换成为模拟量，所述模拟量输出模块将模拟量转换成电压信号，并送至所述调速器模拟输入端，所述调速器模拟输入端用于控制挤出机和牵引机的速度；所述称重系统包括接近开关、主控板和料斗秤，所述接近开关用于获取挤出机的速度，所述主控板用于从PLC中获取牵引机的速度，并与料斗秤称重结果以及挤出机的速度相结合，同时根据用户设定来控制挤出机和牵引机的速度。
进一步，所述PLC与所述称重系统的总线通道为RS485串行通讯接口。
进一步，所述电压信号范围值为0～10V。
进一步，所述控制系统还包括电磁阀，所述电磁阀用于控制进料机。
（三）有益效果
与现有技术相比，本发明具有以下优点：针对低端PLC开发的米重控制系统，克服了现有技术的米重控制系统对配套使用的PLC要求高，成本高，还克服了需要同时操作多个操作屏带来的复杂流程。附图说明
图1为本发明的塑料管材挤出设备米重控制系统的模块图。
具体实施方式
下面结合附图和实施例，对本发明的具体实施方式作进一步详细描述。以下实施例用于说明本发明，但不用来限制本发明的范围。
如图1所示，本实施例中的PLC采用的是S7-200PLC，本发明的塑料管材挤出设备米重控制系统，包括进料机、挤出机、牵引机，还包括工业操作屏、PLC和与PLC总线通讯的称重系统；工业操作屏用于将用户设定反映给称量系统，并显示参数；PLC包括CPU、模拟量输出模块和调速器模拟输入端，CPU用于接收速度控制指令并转换成为模拟量，模拟量输出模块将模拟量转换成电压信号，并送至调速器模拟输入端，调速器模拟输入端用于控制挤出机和牵引机的速度；称重系统包括接近开关、主控板和料斗秤，接近开关用于测量挤出机的速度并将其转换为脉冲信号，CPU读取牵引机编码脉冲信号获取牵引机的速度，主控板用于从PLC中获取牵引机的速度信号，并与料斗秤称重结果以及上述脉冲信号相结合，从而得出喂料率、产能、米重等所需参数，并将实测的米重值与用户设定值进行比较，通过运算，向PLC输出挤出机和牵引机的速度调节值，实现同时根据用户设定来控制挤出机的速度的过程。
上述PLC与上述称重系统的总线通道为RS485串行通讯接口，RS485串行通讯接口抗干扰能力强，而且传输距离能达到3000米，足够满足普通工业企业的要求。
上述电压信号范围值为0～10V，控制挤出机和牵引机的速度通过电压信号的不同值来调节。
上述控制系统还包括电磁阀，电磁阀的通断来控制进料机的进料量。
本发明的PLC采用自由口模式控制串行通讯口，程序中采用接收中断、发送中断等指令来控制通讯口的操作，通过自定义协议进行数据交换。
本发明是针对低端PLC开发的米重控制系统，克服了现有技术的米重控制系统对配套使用的PLC要求高，成本高，还克服了需要同时操作多个操作屏带来的复杂流程。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明技术原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (4)

1.一种塑料管材挤出设备米重控制系统，包括进料机、挤出机、牵引机，其特征在于：还包括工业操作屏、PLC和与PLC总线通讯的称重系统；所述工业操作屏用于将用户设定反映给称量系统，并显示参数；所述PLC包括CPU、模拟量输出模块和调速器模拟输入端，所述CPU用于接收速度控制指令并转换成为模拟量，所述模拟量输出模块将模拟量转换成电压信号，并送至所述调速器模拟输入端，所述调速器模拟输入端用于控制挤出机和牵引机的速度；所述称重系统包括接近开关、主控板和料斗秤，所述接近开关用于获取挤出机的速度，所述主控板用于从PLC中获取牵引机的速度，并与料斗秤称重结果以及挤出机的速度相结合，同时根据用户设定来控制挤出机和牵引机的速度。
2.根据权利要求1所述塑料管材挤出设备米重控制系统，其特征在于：所述PLC与所述称重系统的总线通道为RS485串行通讯接口。
3.根据权利要求2所述塑料管材挤出设备米重控制系统，其特征在于：所述电压信号范围值为0～10V。
4.根据权利要求3所述塑料管材挤出设备米重控制系统，其特征在于：所述控制系统还包括电磁阀，所述电磁阀用于控制进料机。
CN201310464093.9A 2013-10-08 2013-10-08 塑料管材挤出设备米重控制系统 Pending CN103624965A (zh)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108215126A (zh) * 2018-03-22 2018-06-29 苏州金纬机械制造有限公司 用于管材挤出机的米重和能耗集成控制系统
CN113001934A (zh) * 2021-03-01 2021-06-22 山东正泰电缆有限公司 一种重力计量喂料和供料系统
CN113601809A (zh) * 2021-09-29 2021-11-05 天津赛象科技股份有限公司 一种复合挤出橡胶制品的挤出设备及自动控制方法

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CN101973123A (zh) * 2010-10-20 2011-02-16 江苏常盛管业有限公司 一种管材壁厚均匀度控制系统
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108215126A (zh) * 2018-03-22 2018-06-29 苏州金纬机械制造有限公司 用于管材挤出机的米重和能耗集成控制系统
CN113001934A (zh) * 2021-03-01 2021-06-22 山东正泰电缆有限公司 一种重力计量喂料和供料系统
CN113601809A (zh) * 2021-09-29 2021-11-05 天津赛象科技股份有限公司 一种复合挤出橡胶制品的挤出设备及自动控制方法

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Application publication date: 20140312