CN103963254B - 用于对模具进行调温的方法 - Google Patents

用于对模具进行调温的方法 Download PDF

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CN103963254B
CN103963254B CN201410129543.3A CN201410129543A CN103963254B CN 103963254 B CN103963254 B CN 103963254B CN 201410129543 A CN201410129543 A CN 201410129543A CN 103963254 B CN103963254 B CN 103963254B
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temperature
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pump
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CN103963254A (zh
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F·拉施克
G·施泰因比希勒
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Engel Austria GmbH
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
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    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B29C33/00Moulds or cores; Details thereof or accessories therefor
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
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    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B29C35/00Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/0288Controlling heating or curing of polymers during moulding, e.g. by measuring temperatures or properties of the polymer and regulating the process
    • B29C35/0294Controlling heating or curing of polymers during moulding, e.g. by measuring temperatures or properties of the polymer and regulating the process using tempering units for temperature control of moulds or cores
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/72Heating or cooling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
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    • B29C45/73Heating or cooling of the mould
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/72Heating or cooling
    • B29C45/73Heating or cooling of the mould
    • B29C45/7306Control circuits therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/76Measuring, controlling or regulating
    • B29C45/78Measuring, controlling or regulating of temperature
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76003Measured parameter
    • B29C2945/76006Pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76003Measured parameter
    • B29C2945/7604Temperature
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76003Measured parameter
    • B29C2945/76056Flow rate
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76177Location of measurement
    • B29C2945/76297Fluids
    • B29C2945/76304Fluids temperature control fluids
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76494Controlled parameter
    • B29C2945/76531Temperature
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76494Controlled parameter
    • B29C2945/76545Flow rate
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76494Controlled parameter
    • B29C2945/76595Velocity
    • B29C2945/76605Velocity rotational movement
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76655Location of control
    • B29C2945/76732Mould

Abstract

本发明涉及一种用于模塑成型作业机械的模具(3)或组件的调温装置(14),具有与始流(5)连接的至少一个调温分支(2,2′);包括至少一个泵(13)的泵系统,用于将调温介质向始流(5)输送,其特征在于,设有至少一个传感器,通过该至少一个传感器能够测定由温度、流量、压力组成的组中的至少一个参数;并且设有控制或调节装置(1),用于调节或控制泵系统的输送功率,所述至少一个传感器的信号能够传送给所述控制或调节装置。本发明还涉及一种具有至少两个模塑成型作业机械以及所述调温装置的系统以及一种用于对模塑成型作业机械的模具(3)或组件进行调温的方法。

Description

用于对模具进行调温的方法
技术领域
本发明涉及一种用于模塑成型作业机械的模具或组件的调温装置以及一种用于对模塑成型作业机械的模具或组件进行调温的方法。
背景技术
以下对现有技术的论述示例性地借助作为模塑成型作业机械的特殊情况的注塑机以及这种注塑机的作为一般模塑成型作业机械的模具的示例的注塑工具进行。但是以下申请的公开内容不限于这些特殊情况。
调温在本申请中理解为冷却或加热。
在现有技术中,至少一个泵以恒定的输送功率运行。人们使用由至少一个分支管道的输送功率(输送量或压力等)和液压阻力得出的流量或者采用节流阀,以便达到希望的较低流量。
由此造成各种缺点:
-恒定的高能耗,
-泵系统使用寿命低,
-由于容积流量太高而导致的用于调温介质的温度回调的成本,
-较高的泄漏可能性,以及
-调温系统中的不必要的高压力。
发明内容
本发明的任务是至少部分地消除上述缺点。
该任务通过一种调温装置和一种用于对模塑成型作业机械的模具或组件进行调温的方法解决。
所述调温装置具有:
-与始流连接的至少两个调温分支;
-包括至少一个泵的泵系统,用于将调温介质向始流输送,
其中,在所述至少两个调温分支中的每个调温分支中设有至少一个传感器,通过该至少一个传感器能够测定包括温度、流量、压力的组中的至少一个参数;在所述至少两个调温分支的至少一个调温分支中设有至少一个节流装置;并且设有控制或调节装置,用于调节或控制泵系统的输送功率,所述至少一个传感器的信号能够传送给所述控制或调节装置。
在所述方法中,利用包括至少一个泵的泵系统将调温介质输送通过至少两个调温分支,在所述至少两个调温分支中的每个调温分支中测定包括温度、流量、压力的组中的至少一个参数,在所述至少两个调温分支中的至少一个调温分支中借助于节流装置对调温介质进行节流,并且将所述至少一个参数传送给用于调节或控制泵系统的输送功率的控制或调节装置。
通过本发明可以减少或者甚至取消上述在现有技术中强制要求的节流。由于能耗与流量和压力损失的乘积成正比,所以取消节流有利于降低能耗。
优选使用水(气态或液态)或者油作为调温介质。然而还可以使用其他流体,例如,二氧化碳或者氮气。调温介质可以连续地或者以脉冲方式输送。
特别优选地规定:调温装置构造为模塑成型作业机械的供给装置,并且具有一个或多个调温分支。该供给装置可以独立式设置在模塑成型作业机械附近或者构造在该模塑成型作业机械上。
特别优选地,设有优选并联的至少两个调温分支。
为了尽可能良好地调节或控制,在所述至少两个调温分支中的每个调温分支都可以设置至少一个传感器,通过该至少一个传感器能够测定包括温度、流量、压力的组中的至少一个参数,所述传感器的信号能够传送给所述控制或调节装置。
对于最简单的情况,可以通过如下方式设计泵的调节或控制,即:泵通过其转数来调节或控制。
在泵系统包括一个以上的泵的情况下,可以有利的是,作为调节或控制一个或多个泵的替代或补充,将泵系统的各个泵设计为可以断开和/或接通。由此得出分级控制或调节方式。
为了独立地调节调温分支中的流量,在调温分支中分别设置至少一个节流装置。该节流装置可以例如手动调整或者可以通过该控制或调节装置来调整。例如,该节流装置可以是流量阀,其流量等级可以无极调整。
还要求保护一种具有按照本发明的调温装置的模塑成型作业机械,尤其是注塑机、压铸机或者压制机。
另外,还要求保护一种具有至少两个模塑成型作业机械和按照本发明的调温装置的系统,其中,所述至少两个模塑成型作业机械的模具可以串联或并联地通过所述调温装置进行调温。
由于其能效特别高,所以特别优选规定:对每个调温分支进行独立地节流,其中对至少一个调温分支至少基本上不进行节流。通过使输送功率(输送量或压力等)适配于未被节流的调温分支的流量要求,泵可以尽可能低的能耗运行。
所述控制或调节装置可以是注塑机控制系统的、外部控制系统的、供给装置的或中央控制计算机系统的组成部分。
所述泵系统可以是注塑机的、供给装置的或中央介质供应系统的组成部分。
附图说明
参照附图以及与此有关的附图说明将会看到本发明的其他优点和细节。
图1是按照本发明的调温装置的一个实施例的示意图;
图2是阐明按照本发明的方法的一个特别优选的实施例的流程图;
图3是按照本发明的调温装置的另一个实施例的示意图。
具体实施方式
在此,图1示出按照本发明的调温装置14的示意图。该调温装置具有两个调温分支2,各调温分支被引导通过模具3。在调温分支2中还存在流量传感器7、温度传感器4以及流量阀15。流量传感器7当然还可以构造为与流量阀15集成在一起的部件。另外,设有调节或控制装置1,其在该实施例中为调节装置。该调节装置与流量传感器7、温度传感器4以及流量阀15连接。温度传感器4构成用于流量测量的一个替代方案。
两个调温分支2各自与始流5和回流6连接。泵13将调温介质从回流6输送到始流5。另外,在回流6中设有可选的热交换器16。该泵13也与调节装置1连接以便进行调节。
图2是阐明按照本发明的方法的一个特别优选的实施例的流程图。在此:
i表示调温分支2的连续编号;
n表示所使用的调温分支2的数量;
Xi表示调温分支i中的流量阀15的用%表示的控制度;
Vi表示调温回路i中的容积流量;
F表示泵系统的输送流量。
至少保持接近100%打开的调温分支i*可以由使用者指定为对整个系统起决定作用的分支(“瓶颈”)。由此使用者可以例如通过移除快速联接器或缩短管道长度来减小该调温分支2的液压阻力。由此可以进一步减少泵13的输送流量,同时打开其他调温分支2的流量阀15。
不同于图1,图3仅设置一个调温分支2。调温装置14构造为供给装置。在一个共同的外壳20中设有:
-泵13;
-流量传感器7;
-用于调温介质的容器17;
-用于加热容器17中的调温介质的加热装置18;
-用于冷却容器17中的调温介质的冷却装置19;
-可选的温度传感器4;以及
-调节或控制装置1。

Claims (12)

1.一种用于模塑成型作业机械的模具(3)的调温装置(14),具有
-与始流(5)连接并且引导通过模具(3)的至少两个调温分支(2,2');
-包括至少一个泵(13)的泵系统,用于将调温介质向始流(5)输送,
其特征在于,在所述至少两个调温分支(2,2')中的每个调温分支中都设有至少一个传感器,通过该至少一个传感器能够测定包括温度、流量、压力的组中的至少一个参数;在所述至少两个调温分支的至少一个调温分支中设有至少一个节流装置;设有控制或调节装置(1),用于调节或控制泵系统的输送功率,所述至少一个传感器的信号能够传送给所述控制或调节装置;并且每个调温分支(2,2')被独立地节流,其中至少一个调温分支(2,2')至少基本上不被节流。
2.按照权利要求1所述的调温装置,其特征在于,所述至少两个调温分支(2,2')是并联的。
3.按照权利要求1或2所述的调温装置,其特征在于,为了调节或控制所述至少一个泵,能够调节或控制所述至少一个泵的至少一个转数。
4.按照权利要求1或2所述的调温装置,其特征在于,为了调节或控制所述泵系统,该泵系统的泵能够断开和/或接通。
5.按照权利要求1或2所述的调温装置,其特征在于,所述调温装置(14)构造为用于模塑成型作业机械的供给装置,并且具有两个或更多个调温分支(2,2')。
6.一种模塑成型作业机械,其具有按照权利要求1至5中之一项所述的调温装置。
7.按照权利要求6所述的模塑成型作业机械,其特征在于,所述模塑成型作业机械是注塑机、压铸机或者压制机。
8.一种具有至少两个模塑成型作业机械以及按照权利要求1至5中之一项所述的调温装置的系统,其中,所述至少两个模塑成型作业机械的模具能够串联或并联地通过所述调温装置调温。
9.一种用于对模塑成型作业机械的模具(3)进行调温的方法,其中,利用包括至少一个泵的泵系统将调温介质输送通过至少两个调温分支(2),所述至少两个调温分支被引导通过模具(3),其特征在于,在所述至少两个调温分支(2,2')中的每个调温分支中测定包括温度、流量、压力的组中的至少一个参数,在所述至少两个调温分支(2,2')中的至少一个调温分支中借助于节流装置对调温介质进行节流,并且将所述至少一个参数传送给用于调节或控制泵系统的输送功率的控制或调节装置(1),并且对每个调温分支(2,2')独立地进行节流,对其中至少一个调温分支(2,2')至少基本上不进行节流。
10.按照权利要求9所述的方法,其特征在于,所述调温借助于并联的所述至少两个调温分支(2,2')进行。
11.按照权利要求9或10所述的方法,其特征在于,为了调节或控制所述至少一个泵(13),调节或控制所述至少一个泵(13)的至少一个转数。
12.按照权利要求9或10所述的方法,其特征在于,为了调节或者控制所述泵系统,将该泵系统的泵(13)关断和/或接通。
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