公开(公告)号：US06630085B1

公开(公告)日：2003-10-07

申请号：US09679744

申请日：2000-10-05

申请人： Norbert Bielich ,  Helmut Eckardt

发明人： Norbert Bielich ,  Helmut Eckardt

IPC分类号： B29C4516

CPC分类号： B29C45/1642 ,  B29C45/02 ,  B29C45/16 ,  B29C2045/025

摘要： A method for the multi-component injection molding of plastic parts, in which at least two different plastic components are injected into an injection molding tool to form a plastic part, the method comprising the following steps: a) introducing a first plastic component into a melt accumulation chamber, which is bounded by a piston-like end section; b) subsequently introducing a second plastic component into the melt accumulation chamber; c) transferring plastic melt accumulated in the melt accumulation chamber into the injection molding tool. In one embodiment the pressure conditions in the cavity region are homogenized. For this purpose the invention specifies that, when the plastic melt is transferred in accordance with the above step c), the piston-like end section of the melt accumulation chamber is moved in such a way that it forms part of the cavity wall of the injection molding tool.

摘要翻译： 一种用于塑料部件的多部件注射成型的方法，其中将至少两种不同的塑料部件注入到注射模制工具中以形成塑料部件，所述方法包括以下步骤：a）将第一塑料部件引入到 熔体积聚室，其由活塞状端部限定; b）随后将第二塑料部件引入熔体聚积室中; c）将在熔体积聚室中积聚的塑料熔体转移到注射成型工具中。 在一个实施例中，空腔区域中的压力条件被均质化。 为此，本发明规定，当根据上述步骤c）转移塑料熔体时，熔体积聚室的活塞状端部以这样的方式移动，使得其形成部分 注塑工具。

公开(公告)号：US06468464B1

公开(公告)日：2002-10-22

申请号：US09491009

申请日：2000-01-25

申请人： Helmut Eckardt ,  Jurgen Ehritt ,  Karl-Heinz Hill

发明人： Helmut Eckardt ,  Jurgen Ehritt ,  Karl-Heinz Hill

IPC分类号： B29C4500

CPC分类号： B29C45/581 ,  B29C45/30 ,  B29C45/54 ,  B29C2045/308 ,  B29C2045/583

摘要： The invention relates to a method and an apparatus for injection molding parts, which comprises a mixture of at least one plastic material and at least one additive in the form of fibrous or powdered fillers or reinforcement materials. The method comprises the following steps: a) plasticizing a mixture of the plastic material with the fillers or reinforcement materials, in a reciprocating screw plasticizing and injection unit, by rotating a plasticizing and injection screw, which is disposed in a preplasticizing cylinder so that it can move rotationally and axially; b) expelling the plasticized mixture of plastic material and filler or reinforcement material by the axial movement of the plasticizing and injection screw, from the reciprocating screw plasticizing and injection unit, into a mixing element; c) homogenizing the mixture of plastic material and filler or reinforcement materials in the mixing element, by a mixer, which is disposed movably in the mixing element and which is driven by a mechanical drive; and d) expelling the homogenized mixture of plastic material and filler or reinforcement materials from the mixing element into an injection molding tool. The combination of a reciprocating screw unit and a “dynamic mixer” achieves a gentle processing especially of long-fiber additives.

摘要翻译： 本发明涉及一种用于注塑部件的方法和装置，其包括至少一种塑料材料和至少一种呈纤维状或粉状填料或增强材料形式的添加剂的混合物。 该方法包括以下步骤：a）通过旋转塑化和注射螺杆将塑料材料与填料或增强材料的混合物在往复式螺杆塑化和注射单元中塑化，该塑化和注射螺杆设置在预塑化气缸中，使得其 可以旋转和轴向移动; b）通过塑化和注塑螺杆的轴向移动，从往复式螺杆塑化和注塑单元排出塑料材料和填料或增强材料的塑化混合物，成为混合元件; c）通过混合器将塑料材料和填料或增强材料的混合物均质化，混合器可移动地设置在混合元件中并由机械驱动驱动; 以及d）将来自混合元件的均质化塑料材料和填料或增强材料的混合物排出到注塑模具中。 往复式螺杆单元和“动态混合器”的组合实现了特别是长纤维添加剂的温和加工。

公开(公告)号：US06451230B1

公开(公告)日：2002-09-17

申请号：US09420704

申请日：1999-10-19

申请人： Helmut Eckardt ,  Jurgen Ehritt

发明人： Helmut Eckardt ,  Jurgen Ehritt

IPC分类号： B29C4550

CPC分类号： B29C45/1704 ,  B29C44/3446 ,  B29C44/422 ,  B29C44/60 ,  B29C2045/1722 ,  Y10S264/83

摘要： A method for injection molding plastic molded parts from thermoplastic, comprises the following steps: the production of a thermoplastic melt (1) through the rotation of a plasticizing and injection screw (2) in a preplasticizing cylinder (3); the addition to the thermoplastic melt (1) of a fluid (4) by introducing the fluid (4) into the preplasticizing cylinder (3); the mixing up the thermoplastic melt (1) to which the fluid (4) has been added, through the rotational motion of the plasticizing and injection screw (2); the injection of the mixture of thermoplastic melt (1) and fluid (4) into the cavity (8) of an injection molding tool (5). In order to make this method suitable especially for the reliable and reproducible production of large, foamed plastic molded parts, the invention is characterized in that the mixture of thermoplastic melt (1) and fluid (4) is injected into the cavity (8) of an injection molding tool (5) through the translational motion of the plasticizing and injection screw (2), the fluid (4) is introduced into the preplasticizing cylinder (3) at an axial position (6) where the screw channels (7) of the plasticizing and injection screw (2) are situated at least some of the time, and the pressure difference (delta p) between the pressure (PF) of the fluid (4) and the pressure (ps) in the thermoplastic melt (1) is maintained essentially constant while the fluid (4) is being introduced into the preplasticizing cylinder.

摘要翻译： 一种从热塑性塑料注射成型塑料模制件的方法包括以下步骤：通过塑化和注射螺杆（2）在预塑化气缸（3）中的旋转来生产热塑性熔体（1）; 通过将流体（4）引入预塑化气缸（3）中来添加流体（4）的热塑性熔体（1）; 通过塑化和注射螺杆（2）的旋转运动将已加入流体（4）的热塑性熔体（1）混合; 将热塑性熔体（1）和流体（4）的混合物注射到注射模制工具（5）的空腔（8）中。 为了使该方法特别适用于生产大型泡沫塑料模制件的可靠和可重复的生产，本发明的特征在于将热塑性熔体（1）和流体（4）的混合物注入到 通过塑化和注射螺杆（2）的平移运动的注射模制工具（5），流体（4）在轴向位置（6）处被引入预塑性气缸（3）中，其中螺杆通道（7） 塑化和注射螺杆（2）至少位于一些时间，并且流体（4）的压力（PF）与热塑性熔体（1）中的压力（ps）之间的压力差（Δp） 当流体（4）被引入预塑化气缸中时，基本上保持恒定。

公开(公告)号：US06294126B1

公开(公告)日：2001-09-25

申请号：US09162007

申请日：1998-09-28

申请人： Helmut Eckardt ,  Michael Gosdin

发明人： Helmut Eckardt ,  Michael Gosdin

IPC分类号： B29C4573

CPC分类号： B29C45/174 ,  B29C2043/566

摘要： A process and a device for the injection molding of plastic objects of thermoplastic, duraplastic, or elastomeric material implements the steps of: a) injecting a sufficient quantity of molten plastic into cavity (2) of a mold (1) along a melt flow path, which extends from a unit (4,5) for plasticizing and injecting the plastic through a plastic injection nozzle (3) into mold (1); b) introducing a pressurized fluid, particularly a pressurized gas, from a wall (7) of cavity (2) through at least one fluid injection element (6), so that a fluid blanket (8) forms between wall (7) of cavity (2) and the plastic introduced into the mold; c) allowing the molded part thus produced to harden; d) relieving the cavity (2) of the pressure of the pressurized fluid; and e) demolding the molded part. It is provided according to the invention that at least one surface projection (9) is provided in the mold (1), on the cavity wall (7), such that its upper plateau (10) runs extensively parallel to the cavity wall (7). The pressurized fluid is injected by means of at least one fluid injection element (6) in the region of upper plateau (10) of the surface projection (9), such that fluid blanket (8) forms between the plastic and upper plateau (10) of surface projection (9). Thus, the fluid blanket is controlled to be limited in its extent.

摘要翻译： 用于注塑塑料，塑料或弹性体材料的方法和装置实现以下步骤：a）沿着熔体流动路径将足够量的熔融塑料注入模具（1）的空腔（2） ，其从用于塑化和注塑塑料的单元（4,5）延伸通过塑料注射喷嘴（3）进入模具（1）; b）从空腔（2）的壁（7）通过至少一个流体注入元件（6）引入加压流体，特别是加压气体，从而在空腔的壁（7）之间形成流体毯（8） （2）和塑料引入模具; c）使得如此制得的模制件硬化; d）释放加压流体的空腔（2）; 和e）使模制部件脱模。 根据本发明提供的是，至少一个表面突起（9）设置在模具（1）中，在空腔壁（7）上，使得其上部平台（10）大致平行于空腔壁（7）延伸 ）。 加压流体通过在表面突起（9）的上部平台（10）的区域中的至少一个流体注入元件（6）注入，使得在塑料和上部平台（10）之间形成流体覆盖层（8） ）表面投影（9）。 因此，流体覆盖层受到限制。

公开(公告)号：US6019935A

公开(公告)日：2000-02-01

申请号：US416692

申请日：1996-04-19

申请人： Helmut Eckardt ,  Jurgen Ehritt ,  Klaus Lusebrink ,  Michael Renger

发明人： Helmut Eckardt ,  Jurgen Ehritt ,  Klaus Lusebrink ,  Michael Renger

IPC分类号： B29C45/00 ,  B29C45/17 ,  B29C45/26

CPC分类号： B29C45/1704 ,  B29C2045/173

摘要： Proposed is a process for injection molding of products (1) made of thermoplastic material, whose walls (2) enclose a hollow space (3), wherein the molten plastic is injected in a predetermined amount into the cavity or molding nest (6) of a mold (5), during and/or upon which a fluid pressure medium (gas) is applied so that with the formation of the hollow space the molten plastic is distributed along and set against the walls of the cavity or molding nest. The pressure medium (gas) is fed into the cavity or molding nest (6) and into the molten plastic at first essentially only in the direction of flow of the molten plastic and in a quantity and/or at a pressure that causes a void (8) to form within the molten plastic, terminating at a distance from the end of the flow path. Then, with a time lag, more pressure medium (gas) at a higher or increased level of pressure is fed into the cavity and the molten plastic from the end of the flow path for the molten plastic and essentially counter to the direction of flow of the molten plastic, forming a second void (11) which joins with the already existing void (8).

摘要翻译： PCT No.PCT / EP93 / 02694 371日期：1996年04月19日 102（e）日期1996年4月19日PCT提交1993年10月1日PCT公布。 公开号WO94 / 08773 日期1994年4月28日提出了一种注射成型热塑性材料制品（1）的方法，其中壁（2）包围中空空间（3），其中熔融塑料以预定量注入空腔或成型 在模具（5）的嵌套（6）中，在施加流体压力介质（气体）期间和/或在其上施加流体压力介质（气体），使得随着中空空间的形成，熔融塑料沿空腔的壁分布并抵靠空腔壁， 成型巢。 压力介质（气体）首先基本上仅在熔融塑料的流动方向上以一定量和/或在导致空隙的压力（或压力）下被馈送到空腔或模制座（6）中并进入熔融塑料 8）在熔融塑料内形成，在距离流动路径的端部一定距离处终止。 然后，随着时间的推移，在较高或增加的压力水平下的更多的压力介质（气体）从熔融塑料的流动路径的端部被供给到空腔中并且熔融塑料基本上与流动方向相反 形成与已经存在的空隙（8）连接的第二空隙（11）。

公开(公告)号：US5804223A

公开(公告)日：1998-09-08

申请号：US661940

申请日：1996-06-11

申请人： Michael Gosdin ,  Helmut Eckardt

发明人： Michael Gosdin ,  Helmut Eckardt

IPC分类号： B29C45/00 ,  B29C45/17 ,  B29L22/00 ,  F04B41/02 ,  B29C45/03

CPC分类号： B29C45/1732 ,  F04B41/02 ,  F04B2205/063

摘要： The invention relates to a method for fabricating hollow plastic objects of thermoplastic material, having the following steps: a) injecting melt into the tool cavity (1, 2); b) Simultaneously and/or subsequently introducing a pressurized fluid into the melt, so that the melt which has been introduced into the molding tool (1, 2) is distributed in the cavity and is pressed against the walls of the molding tool (1, 2), the pressurized fluid being conducted from a pressurized container (5) into the melt, and the pressurized container (5) being supplied with fluid by a compressor (7) which contains a drive element (6); c) allowing the molded part (8) to cool; and d) relieving the cavity of the pressure of the pressurized fluid. According to the invention, the drive element (6) of the compressor (7) is maintained at a temporally constant power level (P) at least over the production of a large number of plastic objects. This power level is advantageously calculated from the ratio of the work (W) which must be done by the drive element (6) in order to furnish an amount of pressurized fluid that is needed for a certain number of plastic objects over an associated total cycle time (T), relative to this cycle time (T). As a result, the drive element (6) operates continuously, which results in favorable energy conditions and lower wear.

摘要翻译： 本发明涉及一种用于制造热塑性材料的中空塑料物体的方法，具有以下步骤：a）将熔体注入工具腔体（1,2）中; b）同时和/或随后将加压流体引入熔体中，使得已经被引入模制工具（1,2）中的熔体分布在空腔中并被压靠在模具（1， 加压流体从加压容器（5）传导到熔体中，加压容器（5）由包含驱动元件（6）的压缩机（7）供给流体; c）使模制件（8）冷却; 以及d）减轻加压流体的压力的空腔。 根据本发明，压缩机（7）的驱动元件（6）至少在产生大量塑料物体时保持在时间上恒定的功率水平（P）。 该功率水平有利地由驱动元件（6）必须完成的工件（W）的比率计算，以便在相关的总循环中提供一定数量的塑料物体所需的加压流体的量 时间（T），相对于该循环时间（T）。 结果，驱动元件（6）连续工作，这导致有利的能量条件和较低的磨损。

公开(公告)号：US5047183A

公开(公告)日：1991-09-10

申请号：US255715

申请日：1988-10-07

申请人： Helmut Eckardt ,  Jurgen Ehritt

发明人： Helmut Eckardt ,  Jurgen Ehritt

IPC分类号： B29C45/00 ,  B29C45/16 ,  B29C45/17 ,  B29C45/76 ,  B29L22/00

CPC分类号： B29C45/1606 ,  B29C45/1732 ,  B29C45/1735 ,  B29K2995/0063

摘要： A method and an apparatus of injection molding articles of thermoplastic material. The method includes initially forcing molten plastics material into an injection mold in an amount sufficient for forming the article. Subsequently, a flowable medium is forced into the injection mold with a pressure which distributes the plastics material uniformly over the surface of the mold cavity of the injection mold so as to form a hollow body. The hollow body is then cooled while the pressure of the medium is maintained. Finaly, the pressure of the medium is released and the molded article is removed from the injection mold. The pressure of the medium in the mold cavity is controlled and/or varied at least temporarily until the plastics material has cooled. The apparatus for carrying out the method includes a pressure reservoir for the medium which is connectible to the injection mold through lines. The lines include control and/or regulating elements.

摘要翻译： 一种注塑热塑性材料制品的方法和装置。 该方法包括首先将熔融塑料材料强制成足以形成制品的量的注射模具。 随后，将可流动的介质压入注射模具中，其压力将塑料材料均匀地分布在注射模具的模腔的表面上，以形成中空体。 然后在保持介质的压力的同时冷却空心体。 最后，释放介质的压力，并将模制品从注塑模具中取出。 介质在模腔中的压力至少暂时控制和/或变化，直到塑料材料冷却。 用于执行该方法的装置包括用于介质的压力储存器，其可通过管线连接到注射模具。 这些线包括控制和/或调节元件。

公开(公告)号：US4944909A

公开(公告)日：1990-07-31

申请号：US258023

申请日：1988-10-14

申请人： Helmut Eckardt ,  Jurgen Ehritt ,  Alexander Bockenheimer ,  Rainer Teschner

发明人： Helmut Eckardt ,  Jurgen Ehritt ,  Alexander Bockenheimer ,  Rainer Teschner

IPC分类号： B29C45/16 ,  B29C45/20 ,  B29C45/27 ,  B29L9/00

CPC分类号： B29C45/1603 ,  B29C45/1642 ,  B29C45/2708 ,  Y10S425/051

摘要： A method for manufacturing multilayer molded articles of at least two plastics material components having substantially different properties with respect to behavior, processing and/or temperature changes. The plastics material components are injected from different extruder unit through a common sprue brushing into a mold cavity of a molding tool. The plastics material components are introduced in a predetermined time sequence initially into different cross-sectional areas of a common sprue cone and are subsequently forced into the sprue cone in a converging manner toward a sprue duct of the sprue bushing.

摘要翻译： 一种用于制造至少两种相对于行为，加工和/或温度变化具有实质上不同性质的塑料材料组分的多层模塑制品的方法。 塑料材料组分通过普通浇道刷入不同的挤出机单元，注入模具的模腔中。 将塑料材料部件以预定的时间顺序引入到公共浇道锥体的不同横截面区域中，随后以会聚的方式被迫进入浇道锥体，以朝向浇口套管的浇口。

公开(公告)号：US4078875A

公开(公告)日：1978-03-14

申请号：US765048

申请日：1977-02-02

申请人： Helmut Eckardt

发明人： Helmut Eckardt

IPC分类号： B29C44/04 ,  B29C45/16 ,  B29F1/10

CPC分类号： B29C44/0461 ,  B29C44/0492 ,  B29C45/1603 ,  B29C45/1642 ,  Y10S264/83

摘要： Process and apparatus for injection molding plastic to provide a foamed core with an unfoamed outer skin.

摘要翻译： 用于注射塑料的方法和设备，以提供具有未发泡外皮的泡沫芯。

公开(公告)号：US08268210B2

公开(公告)日：2012-09-18

申请号：US13087713

申请日：2011-04-15

申请人： Helmut Eckardt

发明人： Helmut Eckardt

IPC分类号： B29C45/00

CPC分类号： B29C45/1704 ,  B29C2045/0087 ,  B29C2045/1719

摘要： The moulded part has at least two different sections with different outer diameter and a void inside the moulded part. To make the void, a projectile is passed through the still molten injection mouldable material in a direction of flow. A pressurized fluid is exerted in the void in the direction of flow behind the projectile to move the projectile. To obtain constant wall thicknesses, the projectile has at least one elastic or plastic section, which is delimited by a space in which the pressurized fluid can enter. The volume of the space and the effective outer diameter of the projectile can be changed by the fluid pressure and is controlled in such a manner that the space and the effective outer diameter of the projectile is enlarged and/or reduced to make the moulded part with different diameters.

摘要翻译： 模制部件具有至少两个具有不同外径的不同部分和模制部件内部的空隙。 为了制造空隙，抛射体在流动方向上通过仍然熔融的注塑成型材料。 加压流体沿着弹丸后方的流动方向施加在空隙中以移动射弹。 为了获得恒定的壁厚，射弹具有至少一个弹性或塑性部分，其被加压流体可以进入的空间界定。 射弹的体积和射弹的有效外径可以通过流体压力来改变，并以这样一种方式进行控制，使得射弹的空间和有效外径被放大和/或减小以使模制件与 不同直径