公开(公告)号：US5759459A

公开(公告)日：1998-06-02

申请号：US681932

申请日：1996-07-29

申请人： Helmut Eckardt ,  Jurgen Ehritt ,  Alfons Seuthe ,  Michael Gosdin

发明人： Helmut Eckardt ,  Jurgen Ehritt ,  Alfons Seuthe ,  Michael Gosdin

IPC分类号： B29C45/17 ,  B29C45/73 ,  B29C45/77

CPC分类号： B29C45/1711 ,  B29C2045/1714

摘要： A method and an apparatus for producing plastic objects with hollow spaces is disclosed. The method comprises the following steps: injecting a sufficient amount of plastic melt into the cavity (2) of the molding tool (1); simultaneously and/or subsequently injecting a pressurized fluid into the melt by means of a fluid injection nozzle (7); allowing the molded part (6) to cool; relieving the cavity (2) of the pressure of the compressed fluid, and demolding the molded part, while plastic melt is driven out into at least one overflow cavity (8), which is connected to the cavity (2). According to the invention, the volume of the overflow cavity (8) is changed, and in particular enlarged. This volume increase advantageously is controlled or regulated. The advantage achieved thereby is that the injection molding cycle, especially the overflow of melt into the overflow cavity (8), remains controllable by simple means.

摘要翻译： 公开了一种用于生产具有中空空间的塑料物体的方法和装置。 该方法包括以下步骤：将足够量的塑料熔体注入模制工具（1）的空腔（2）中; 同时和/或随后通过流体喷射喷嘴（7）将加压流体注入到熔体中。 使模制件（6）冷却; 释放空腔（2）压缩流体的压力，并使模制部件脱模，同时将塑料熔体驱出到连接到空腔（2）的至少一个溢流腔（8）中。 根据本发明，溢流腔（8）的体积变化，特别是变大。 该体积增加有利地被控制或调节。 因此实现的优点在于注塑循环，特别是熔体进入溢流腔（8）的溢流通过简单的手段保持可控。

公开(公告)号：US5169648A

公开(公告)日：1992-12-08

申请号：US735327

申请日：1991-07-24

申请人： Helmut Eckardt ,  Jurgen Ehritt

发明人： Helmut Eckardt ,  Jurgen Ehritt

IPC分类号： B29C45/16 ,  B29C45/17

CPC分类号： B29C45/1735 ,  B29C45/1606 ,  B29C45/1732 ,  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. Finally, 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，并将模塑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：US06254813B1

公开(公告)日：2001-07-03

申请号：US09258606

申请日：1999-02-26

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

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

IPC分类号： B29C4502

CPC分类号： B29C67/246 ,  B29B7/7461 ,  B29C45/1753 ,  B29C45/581

摘要： An apparatus and method provides that before, during, and/or after the plastic objects have been injection molded, a portion of the first plastic component, the second material, and/or a mixture of the two components is conveyed to at least one storage element with a variable volume. This element adjoins the flow path of the material melt. After completion of the injection molding process of the plastic objects and/or before the material is injected for the next plastic object to be produced, the plastic or the material stored in a storage element with a variable volume is conveyed to the flow path of the melt of the plastic or material. This frees the melt flow path of a mixture of the two plastic components and/or obtains a desired material mixture for producing the next plastic object.

摘要翻译： 一种装置和方法提供了在塑料物体已被注模之前，期间和/或之后，第一塑料部件，第二材料和/或两个部件的混合物的一部分被传送到至少一个存储 元素具有可变体积。 该元件邻接材料熔体的流动路径。 在完成塑料物体的注射成型处理之后和/或在为下一个要生产的塑料物体注入材料之前，将存储在具有可变体积的存储元件中的塑料或材料输送到 熔化塑料或材料。 这释放了两种塑料组分的混合物的熔体流动路径和/或获得用于生产下一个塑料物体的所需材料混合物。

公开(公告)号：US5466141A

公开(公告)日：1995-11-14

申请号：US258914

申请日：1994-06-13

申请人： Helmut Eckardt ,  Jurgen Ehritt ,  Michael Renger

发明人： Helmut Eckardt ,  Jurgen Ehritt ,  Michael Renger

IPC分类号： B29C45/00 ,  B29C45/17 ,  B29C45/26 ,  B29C49/06 ,  B29L22/00 ,  B29C45/20

CPC分类号： B29C45/1734 ,  B29C2045/1707 ,  B29C2045/1737 ,  B29C2045/1738

摘要： A device for injection molding articles of plastics material having hollow spaces. The device includes a molding tool with a mold cavity. Plastics material melt is fed to the mold cavity through a nozzle. Another pressurized medium is supplied to the mold cavity through a hollow needle at a location different from the location of the nozzle. A needle core is mounted in the hollow needle. The needle core is axially displaceable within certain limits. The opening of the hollow needle to the mold cavity can be opened and closed or its cross-sectional area can be varied by moving the needle core.

摘要翻译： 一种用于注塑成型具有中空空间的塑料制品的装置。 该装置包括具有模腔的模制工具。 塑料材料熔体通过喷嘴进给模腔。 另一个加压介质通过中空针在不同于喷嘴位置的位置被供应到模腔。 针芯安装在中空针中。 针芯在一定限度内可轴向移动。 可以打开和关闭空心针到模腔的开口，或者可以通过移动针芯来改变其横截面积。

公开(公告)号：US5093053A

公开(公告)日：1992-03-03

申请号：US581445

申请日：1990-09-12

申请人： Helmut Eckardt ,  Jurgen Ehritt

发明人： Helmut Eckardt ,  Jurgen Ehritt

IPC分类号： B29C44/04 ,  B29C44/10 ,  B29C45/00

CPC分类号： B29C44/105 ,  B29C44/0461 ,  B29C45/00

摘要： A method of manufacturing multiple-layer molded articles with an outer skin of compact thermoplastic material and a core of foamed thermoplastic material includes initially introducing the material for the skin into a mold cavity in a quantity sufficient for the desired thickness of the skin and subsequently feeding into the mold cavity the material for the core to which the expanding agent has been added. During and/or after being introduced into the mold cavity, the core material containing expanding agent is temporarily subjected by means of an additional gas and/or a pressurized, low-boiling liquid to an active pressure which exceeds the gas pressure of the expanding agent. Subsequently, the additional gas or the low-boiling liquid is removed from the hollow space which is still free of skin material and core material.

摘要翻译： 制造具有紧密热塑性材料外皮和发泡热塑性材料芯的多层模塑制品的方法包括首先将用于皮肤的材料以足以达到所需皮肤厚度的量的形式引入模腔中，并随后进料 向模腔中注入已经添加了发泡剂的芯的材料。 在引入模腔内和/或之后，含有发泡剂的芯材料暂时通过附加气体和/或加压的低沸点液体经受超过发泡剂气体压力的活性压力 。 随后，从仍然没有表皮材料和芯材的中空空间移除附加气体或低沸点液体。

公开(公告)号：US4210616A

公开(公告)日：1980-07-01

申请号：US887182

申请日：1978-03-16

申请人： Helmut Eckardt ,  Jurgen Ehritt

发明人： Helmut Eckardt ,  Jurgen Ehritt

IPC分类号： B29C44/04 ,  B29C45/00 ,  B29C45/16 ,  B29D27/00 ,  B29F1/10

CPC分类号： B29C45/1642 ,  B29C44/0492 ,  B29C2045/1651 ,  B29C45/00 ,  Y10S264/83

摘要： A method for injection molding a product having a non-cellular skin layer and a cellular core portion. The method involves successive or simultaneous injection of a non-foamable resin material and a foamable resin material through a sprue bushing having an injection channel connected to the mold cavity and a pair of fixed feed channels intersecting with the injection channel. The injection mold has a bore with a sprue bushing therein. The sprue bushing having an injection channel therein and intersecting with a pair of fixed feed channels. Injection units deliver the materials to the pair of fixed feed channels.

摘要翻译： 一种用于注射成型具有非细胞表皮层和细胞芯部分的产品的方法。 该方法包括通过具有连接到模腔的注射通道和与注射通道相交的一对固定进料通道的浇口衬套连续或同时注射不发泡树脂材料和可发泡树脂材料。 注射模具具有在其中具有浇口衬套的孔。 浇道衬套在其中具有注入通道并且与一对固定进料通道相交。 注射单元将材料输送到一对固定进料通道。

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：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：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。