Extruder temperature controller with stable temperature reset
    44.
    发明申请
    Extruder temperature controller with stable temperature reset 有权
    挤出机温度控制器,温度复位稳定

    公开(公告)号:US20030211189A1

    公开(公告)日:2003-11-13

    申请号:US10148934

    申请日:2002-11-12

    Abstract: The invention is an extruder temperature controller for an extruder barrel. The extruder temperature controller includes means for determining an actual screw speed and has means for storing a plurality of screw speeds. Each member of the plurality of stored screw speeds has a corresponding stored temperature reset value. The extruder temperature controller has a means for comparing and selecting that compares the actual screw speed to each of the plurality of stored screw speeds and selectes a default screw speed. The default screw speed has a smaller deviation from the actual screw speed than any other member of the compared, stored screw speeds. The controller further includes a means for generating a control output driver signal to the heat exchange means. The control output driver signal is the corresponding stored temperature reset value for the default screw speed. The invention further includes a means for delaying a control alarm for a predetermined time when the means for generating a control output driver signal to the heat exchange means operates at or near maximum capacity. The invention includes a method for controlling the temperature of an extruder barrel.

    Abstract translation: 本发明是用于挤出机机筒的挤出机温度控制器。 挤出机温度控制器包括用于确定实际螺杆速度的装置,并且具有用于存储多个螺杆速度的装置。 多个存储的螺杆速度的每个构件具有对应的存储的温度重置值。 挤出机温度控制器具有用于比较和选择的装置,其将实际螺杆速度与多个存储的螺杆速度中的每一个进行比较并选择默认螺杆速度。 与实际的螺杆转速相比,默认的螺杆转速比所比较的存储的螺杆转速有所偏离。 控制器还包括用于产生到热交换装置的控制输出驱动器信号的装置。 控制输出驱动器信号是默认螺杆转速的相应存储温度复位值。 本发明还包括一种用于在用于产生到热交换装置的控制输出驱动器信号的装置在最大容量或接近最大容量下操作的装置的情况下延迟预定时间的控制报警的装置。 本发明包括一种用于控制挤出机筒的温度的方法。

    Sheet processing system
    45.
    发明授权
    Sheet processing system 失效
    纸张处理系统

    公开(公告)号:US06375452B1

    公开(公告)日:2002-04-23

    申请号:US09557551

    申请日:2000-04-25

    Inventor: Frank R. Nissel

    Abstract: A sheet processing system for continuously producing plastic sheet which is continuously supplied to an intermittent take-up device, utilizing a sheet forming apparatus, a conveyor, an accumulator and take-up apparatus, the sheet being fed along the conveyor to an accumulator positioned integrally with the conveyor, the accumulator being controlled in a cyclic operation which provides for the accumulation of the continuously fed sheet material to permit intermittent operation of the take-up apparatus, and the edge trimming of the sheet subsequently to the action of the accumulator.

    Abstract translation: 一种片材处理系统,用于连续地供应到间歇卷取装置的塑料片材,利用片材形成装置,输送机,储存器和卷取装置,该片材沿着传送器被馈送到一体地定位 与输送机一起,蓄能器被控制在循环操​​作中,其提供连续供给的片材的累积以允许卷绕装置的间歇操作,以及随着蓄压器的作用而对片材进行边缘修整。

    Method for designing an extrusion process and die
    47.
    发明授权
    Method for designing an extrusion process and die 失效
    设计挤出工艺和模具的方法

    公开(公告)号:US6153131A

    公开(公告)日:2000-11-28

    申请号:US468509

    申请日:1999-12-21

    Abstract: A method for designing an extrusion process and extrusion die includes the steps of first determining the optimal extrusion process parameters and then designing an extrusion die based on those optimal parameters. The optimal extrusion process parameters are determined by identifying the geometric characteristics of the selected extrusion profile, determining the physical characteristics of the material to be extruded, determining the physical characteristics for the extrusion processor, and detrmining the extrusion process limitation chart for the selected extrusion profile, selected extrusion material, and the selected extrusion processor. After the extrusion process limitation chart has been determined, a preferred extrusion process window is determined for the extrusion process limitation chart. A series of simulations are then run to determine if the selected temperatures and speeds result in an entire extrusion process falling within the extrusion process window. If the selected criteria result in a process that extends beyond the window, new selections are made and the simulation is repeated until the process falls entirely within the extrusion process window. The criteria are then used in a feed forward set up to run the extrusion process.

    Abstract translation: 挤出工艺和挤出模具的设计方法包括以下步骤:首先确定最佳挤出工艺参数,然后基于这些最佳参数设计挤压模具。 通过确定所选择的挤出型材的几何特性,确定待挤出材料的物理特性,确定挤出加工机的物理特性,以及确定所选挤压型材的挤出过程限制图来确定最佳挤出工艺参数 ,所选择的挤出材料和所选择的挤出处理器。 在挤出过程限制图已经确定之后,针对挤出过程限制图确定优选的挤出工艺窗口。 然后运行一系列模拟以确定所选择的温度和速度是否导致整个挤出过程落在挤出过程窗口内。 如果所选择的标准导致超出窗口的过程,则进行新的选择,并重复模拟,直到该过程完全落在挤出过程窗口中。 然后将标准用于进行前馈设置以运行挤出过程。

    Extrusion molding method and extrusion molding apparatus
    50.
    发明授权
    Extrusion molding method and extrusion molding apparatus 失效
    挤出成型法和挤出成型装置

    公开(公告)号:US5567368A

    公开(公告)日:1996-10-22

    申请号:US424352

    申请日:1995-04-26

    Abstract: In the present invention, a preliminary extruding operation is carried out for each section of a movable die moving pattern DA corresponding to the configuration of an article, thereby determining a suitable back pressure at which a desired cross-sectional dimension is obtained. The movable die is secured to a position DA1 corresponding to a side section of the article, then screw revolutions are changed while extruding a molding material. Thus, determined as a suitable back pressure BPO for the side section is a specified value of the back pressures BP at which the molded product has the desired cross-sectional dimension. Likewise, a suitable back pressure for the upper section is also determined, so that a pattern of the suitable back pressures BPO is determined. In view of the time delay, timings of change in an initial setting pattern R1 for the screw revolutions are advanced for periods of times T.sub.11, T.sub.12, T.sub.13 and T.sub.14 from the timings of change in the pattern DA. In the present extruding operation, an actual pulling speed is detected. If the actual pulling speed is different from a pulling speed in the preliminary extruding operation, the movable die moving pattern DA is corrected. After several cycles of extrusion molding are carried out, if the detected back pressures BP are deviated from the pattern of the suitable back pressures BPO, the pattern R1 of the screw revolutions is modified.

    Abstract translation: PCT No.PCT / JP93 / 01906 Sec。 371日期1995年04月26日 102(e)日期1995年4月26日PCT提交1993年12月27日PCT公布。 第WO95 / 06557号公报 日期1995年3月9日在本发明中,对与制品的构造相对应的可动模具移动图案DA的每个部分进行预挤压操作,由此确定合适的背压,在该压力下,期望的横截面尺寸为 获得。 可移动模具被固定到与制品的侧部相对应的位置DA1,然后在挤出模制材料的同时改变螺杆转数。 因此,作为侧部的合适的背压BPO确定为成型品具有期望的横截面尺寸的背压BP的规定值。 同样地,也确定了用于上部的合适的背压,从而确定合适的背压BPO的图案。 考虑到时间延迟,螺杆转数的初始设定模式R1的变化的定时从图案DA的变化的定时到达时间T11,T12,T13和T14的时段。 在本挤压操作中,检测到实际的牵引速度。 如果实际拉拔速度与预挤压操作中的拉拔速度不同,则校正可动模移动图案DA。 在进行几个挤压成型循环之后,如果检测到的背压BP偏离合适的背压BPO的图案,则改变螺杆转数的图案R1。

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