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公开(公告)号:USD344716S
公开(公告)日:1994-03-01
申请号:US784821
申请日:1991-10-29
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公开(公告)号:US5325287A
公开(公告)日:1994-06-28
申请号:US954330
申请日:1992-09-30
申请人: David K. Spahr , Dennis Tibbitts
发明人: David K. Spahr , Dennis Tibbitts
IPC分类号: B29C45/76 , G05B19/409 , G06F15/46
CPC分类号: G05B19/409 , B29C45/76 , B29C2037/906 , B29C2045/7606 , G05B2219/36133
摘要: A control system for a process machine, preferably an injection molding machine, and having an improved control system architecture. The system includes a machine controller which is coupled to and drives the machine and a separate display/operator interface. Both of the units are independently processor driven and function in a decoupled fashion. A communication bus links the display/operator interface and the machine controller, and standardized messages are communicated bidirectionally on the bus. By means of that sole linkage, the machine controller is utilized to drive the machine while the display/operator interface emulates a tightly coupled control panel, but operates independently, except for the communication of messages on the data bus. Preferably, a power supply for the display/operator interface is mounted in the machine controller enclosure and coupled to the interface by a power supply cable. The interface can thus be reduced in size, sealed and non-ventilated to allow for mounting the relatively hostile environment expected around an injection molding machine.
摘要翻译: 一种用于处理机器的控制系统,优选地是注塑机,并具有改进的控制系统结构。 该系统包括耦合到并驱动机器的机器控制器和单独的显示器/操作器接口。 这两个单元都是独立的处理器驱动,并以解耦的方式运行。 通信总线连接显示/操作界面和机器控制器,标准化消息在总线上双向传送。 通过该唯一联动,机器控制器用于驱动机器,而显示器/操作员接口模拟紧密耦合的控制面板,但是独立地操作,除了在数据总线上的消息的通信。 优选地,用于显示器/操作者接口的电源安装在机器控制器外壳中,并通过电源电缆耦合到接口。 因此,接口可以减小尺寸,密封和非通风,以便安装在注射成型机周围预期的相对恶劣的环境。
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公开(公告)号:US5786999A
公开(公告)日:1998-07-28
申请号:US539098
申请日:1995-10-04
申请人: David K. Spahr , Dennis C. Tibbitts
发明人: David K. Spahr , Dennis C. Tibbitts
CPC分类号: G05B19/416 , B29C45/766 , B29C45/77 , G05B2219/41177 , G05B2219/43162 , G05B2219/43175
摘要: An adaptive controller is provided for controlling the velocity of a ram in an injection molding apparatus during the injection stage of the molding cycle. The controller includes two sets of parameters. The first set define an open-loop control equation for controlling the ram velocity. The second set of parameters define a closed-loop control equation for controlling the ram velocity. Control of the ram, during the injection stage, is partitioned into discrete segments, wherein the open-loop control equation governs during the first portion of each segment, and the closed-loop equation governs during the latter portion of each segment. Both control equations are designed to drive the ram at a set, target velocity. At the end of each segment, a processor evaluates the actual ram velocity with the set, target velocity. Based upon this evaluation, the first and second set of parameters are modified to improve the ram performance and efficiency on the subsequent injection cycle.
摘要翻译: 提供了一种自适应控制器,用于在成型周期的注射阶段期间控制注射成型设备中的冲头的速度。 控制器包括两组参数。 第一组定义了一个控制冲程速度的开环控制方程。 第二组参数定义了一个控制冲程速度的闭环控制方程。 在喷射阶段期间,压头的控制被分割成离散段,其中开环控制方程在每个段的第一部分期间控制,并且闭环方程在每个段的后一部分中控制。 两个控制方程被设计成以设定的目标速度驱动冲头。 在每个段的末尾,处理器用设定的目标速度来评估实际的冲程速度。 基于此评估,修改第一组参数和第二组参数,以提高后续注射循环的压头性能和效率。
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公开(公告)号:US5645775A
公开(公告)日:1997-07-08
申请号:US539099
申请日:1995-10-04
申请人: David K. Spahr , Dennis C. Tibbitts
发明人: David K. Spahr , Dennis C. Tibbitts
CPC分类号: B29C45/77 , B29C45/82 , B29C2045/776 , B29C2945/76006 , B29C2945/76083 , B29C2945/76113 , B29C2945/762 , B29C2945/76204 , B29C2945/76257 , B29C2945/76287 , B29C2945/76498 , B29C2945/76545 , B29C2945/76561 , B29C2945/76785 , B29C2945/76933 , B29C2945/76936 , B29C2945/76943
摘要: An adaptive controller is provided for controlling the transition, in an injection molding apparatus, from the injection stage to the packing stage. The controller operates by controlling the velocity of the ram during the injection stage, and controlling the ram pressure during the packing stage. The controller anticipates the transition from the injection stage to the packing stage by monitoring the ratio of pressure to velocity. The divergence of this ratio forecasts the onset of the packing stage. At this time, a pressure relief valve is preset in anticipation of the packing stage, to prevent a pressure spike during the transition period. The flow control valve is held constant during the transition.
摘要翻译: 提供了一种自适应控制器,用于控制在注射成型装置中从注射阶段到包装阶段的过渡。 控制器通过在喷射阶段控制压头的速度并在包装阶段控制压头压力来进行操作。 控制器通过监测压力与速度的比例来预测从注射阶段到包装阶段的过渡。 这个比例的差异预示着包装阶段的开始。 此时,为了防止在过渡期间的压力尖峰,预先设置压力释放阀,以预期包装阶段。 流量控制阀在过渡期间保持恒定。
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