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：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：US6143237A

公开(公告)日：2000-11-07

申请号：US67887

申请日：1998-04-28

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 ,  B29D22/00 ,  B29C45/00 ,  B29C49/06

CPC分类号： B29C45/1705 ,  B29C45/1711

摘要： A method and an apparatus are disclosed for producing plastic objects with solid regions and hollow regions. The method has the following steps: a) blocking off a part of the cavity (2) of a molding tool (1), so that little or no plastic melt can reach the blocked-off region (8); b) injecting plastic melt into the unblocked region (9) of the cavity (2) of the molding tool (1); c) releasing the blockage, so that plastic melt can reach the previously blocked-off region (8) of the cavity (2); d) injecting a pressurized gas into the melt by means of at least one fluid injection nozzle (7), so that the melt injected into the molding tool is distributed into the desired regions of the cavity (2) while forming a hollow space and is pressed against the cavity walls of the molding tool (1); e) allowing the molded part (6) to cool; f) relieving the cavity (2) of the pressure of the pressurized fluid; and g) demolding the molded part. The advantage achieved thereby is that solid regions and hollow regions are formed in the molded part in a predetermined manner.

摘要翻译： 公开了用于生产具有固体区域和中空区域的塑料物体的方法和装置。 该方法具有以下步骤：a）阻止模制工具（1）的空腔（2）的一部分，使得很少或不存在塑料熔体可以到达封闭区域（8）; b）将塑料熔体注入到模制工具（1）的空腔（2）的未封闭区域（9）中; c）释放堵塞，使得塑料熔体可以到达空腔（2）的先前封闭区域（8）; d）通过至少一个流体注射喷嘴（7）将加压气体注入到熔体中，使得注入模制工具中的熔体在形成中空空间的同时被分配到空腔（2）的所需区域中，并且是 压靠在模具（1）的腔壁上; e）允许模制件（6）冷却; f）缓解加压流体压力的空腔（2）; 和g）使模制部件脱模。 由此实现的优点在于，以预定的方式在模制部件中形成固体区域和中空区域。

公开(公告)号：US5895667A

公开(公告)日：1999-04-20

申请号：US381798

申请日：1995-02-01

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 ,  B29C45/16

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.

公开(公告)号：US5776412A

公开(公告)日：1998-07-07

申请号：US677826

申请日：1996-07-10

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 ,  B29C45/00

CPC分类号： B29C45/1705 ,  B29C45/1711

摘要： A method and an apparatus are disclosed for producing plastic objects with solid regions and hollow regions. The method has the following steps: a) blocking off a part of the cavity (2) of a molding tool (1), so that little or no plastic melt can reach the blocked-off region (8); b) injecting plastic melt into the unblocked region (9) of the cavity (2) of the molding tool (1); c) releasing the blockage, so that plastic melt can reach the previously blocked-off region (8) of the cavity (2); d) injecting a pressurized gas into the melt by means of at least one fluid injection nozzle (7), so that the melt injected into the molding tool is distributed into the desired regions of the cavity (2) while forming a hollow space and is pressed against the cavity walls of the molding tool (1); e) allowing the molded part (6) to cool; f) relieving the cavity (2) of the pressure of the pressurized fluid; and g) demolding the molded part. The advantage achieved thereby is that solid regions and hollow regions are formed in the molded part in a predetermined manner.

公开(公告)号：US5750155A

公开(公告)日：1998-05-12

申请号：US406945

申请日：1995-05-05

申请人： Helmut Eckardt ,  Klaus Schroder ,  Jurgen Ehritt ,  Uwe Hubel

发明人： Helmut Eckardt ,  Klaus Schroder ,  Jurgen Ehritt ,  Uwe Hubel

IPC分类号： B29C45/00 ,  B29C45/17 ,  B29C45/26 ,  B29C45/34 ,  B29L22/00 ,  B29C45/23

CPC分类号： B29C45/1734

摘要： The proposal is for a device for injection molding plastic items enclosing hollow spaces with which a further pressurised medium like air, gas or a fluid can be introduced through a hollow needle (5) at a point differing from the nozzle into a mould (1), the mould hollow or cavity (4) of which can be filled with molten pastic through a nozzle. There is a needle core (9) which can be moved axially to a limited extent in the hollow needle (5) and it is possible via this needle core (9) to vary the cross-section of or open and close the aperture (16) of the hollow needle (6) opening into the mould hollow or cavity (4). The needle core (9) bears a thickened head or plate (10) in front of the end of the aperture in the hollow needle, the outside diameter of which corresponds at least approximately to the outside diameter of the hollow needle, so that it forms, with the aperture end (6) of the hollow needle (5), a radially directed splitting valve. In relation to the hollow needle (5), the needle core (9) is axially supported by spring means (23). It is important here that these spring means (23) continuously engage with the needle core (9) in the closing direction of the aperture of the splitting valve (16) and that the needle core (9) can be moved against the spring means (23) in the opening direction by a remote-controlled driving device (17, 18).

摘要翻译： PCT No.PCT / EP93 / 02608 371日期：1995年5月5日 102（e）日期1995年5月5日PCT 1993年9月25日PCT公布。 出版物WO94 / 07675 日期1994年04月14日提出的是用于注塑塑料制品的装置，该塑料制品包围中空空间，通过空心针（5）可以在不同于喷嘴的点处将诸如空气，气体或流体的另外的加压介质引入到中空针 模具（1），其中空模或空腔（4）可以通过喷嘴填充熔融的塑料。 有一个可以在空心针（5）中轴向移动到有限程度的针芯（9），并且可以经由该针芯（9）来改变开口的横截面或打开和关闭孔 ）打开到模具中空或空腔（4）中的中空针（6）。 针芯（9）在中空针的孔的端部的前方具有增厚的头部或板（10），其外径至少近似于中空针的外径，从而形成 与中空针（5）的孔径端（6）一起形成径向分流阀。 相对于中空针（5），针芯（9）由弹簧装置（23）轴向支撑。 重要的是，这些弹簧装置（23）在分离阀（16）的孔的关闭方向上与针芯（9）连续地接合，并且针芯（9）可以抵靠弹簧装置（ 23）通过遥控驱动装置（17,18）在打开方向上移动。

公开(公告)号：US5645866A

公开(公告)日：1997-07-08

申请号：US424349

申请日：1995-07-11

申请人： Helmut Eckardt ,  Johann Holzschuh ,  Jurgen Ehritt ,  Michael Renger ,  Rolf Schwesinger

发明人： Helmut Eckardt ,  Johann Holzschuh ,  Jurgen Ehritt ,  Michael Renger ,  Rolf Schwesinger

IPC分类号： B29C45/00 ,  B29C45/17 ,  B29C45/57 ,  B29C45/76 ,  B29C45/77 ,  G05D7/06 ,  G05D16/20 ,  B29C45/16

CPC分类号： B29C45/1732

摘要： It is proposed that a pressure control device and/or pressure regulating device (8) be used for a fluid medium, in particular air or gas, preferably nitrogen, which is to be supplied to an injection mold in addition to the molten plastic, this pressure control device and/or pressure regulating device (8) being provided as a stationary, but preferably as a mobile unit between a pressure generator/pressure accumulator (7) and an injection system associated with the injection mold (3), e.g., in a nozzle head or add-on building block. The device has a main line (21) which leads from the pressure generator/pressure accumulator (7) to the injection system (27) and which is switchable by means of valve control only in such a way that it either lets through or blocks the inflow of media, a first branch line (28) leading to a receiver side of a pressure sensor (29) whose other receiver side is sensitive to the pressure of the medium in the injection mold, and a second branch line (30) which can be switched so as to let through or block flow via a valve control influenced by the pressure sensor (29) and, in so doing, forms a media outflow from the injection mold, in particular a return of media to the pressure generator/pressure accumulator (7). Essential features of this device consist in that the main line (21) branches into at least two parallel flow paths (23a and 23b), that each flow path (23a and 23b) is outfitted with a media inflow control valve (24a and 24b) which may be operated to let through or block flow, as required, that the media inflow control valves (24a and 24b) have different flow cross sections (25a, 25b), and that these media inflow control valves (24a and 24b) can be controlled individually and/or jointly in a stepwise manner depending on the pressure difference determined by the pressure sensor (29).

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。