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：US5667819A

公开(公告)日：1997-09-16

申请号：US334287

申请日：1994-11-04

申请人： Helmut Eckardt

发明人： Helmut Eckardt

IPC分类号： B29C45/26 ,  B29C45/16 ,  B29C45/20 ,  B29C45/23 ,  B29L9/00 ,  B29C45/13 ,  B29C45/46

CPC分类号： B29C45/1603 ,  B29C45/1642

摘要： A method of injection molding of workpieces, formed of at least two different layers, and which includes forming at least one layer from lacquer, with the apparatus for effecting the method including at least two injection molding devices for forming melts of lacquer and non-lacquer materials and an injection unit communicating with the two devices for injecting the two melts into a mold cavity of a mold.

摘要翻译： 一种注塑成型工件的方法，由至少两个不同的层形成，并且包括从漆中形成至少一层，用于实现该方法的装置包括至少两个用于形成漆和非漆的熔体的注射成型装置 材料和与两个装置连通的注射单元，用于将两个熔体注入模具的模腔中。

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：US4134687A

公开(公告)日：1979-01-16

申请号：US800055

申请日：1977-05-24

申请人： Helmut Eckardt

发明人： Helmut Eckardt

IPC分类号： B29C45/00 ,  B29B7/00 ,  B29C44/04 ,  B29C45/16 ,  B29C45/20 ,  B29C47/00 ,  B29C47/04 ,  B29C47/10 ,  B29C47/12 ,  B29C47/58 ,  B29C47/92 ,  B29K105/04 ,  B29B1/06 ,  B29F1/02

CPC分类号： B29C44/0492 ,  B29C45/00 ,  Y10S264/83 ,  Y10S366/604

摘要： Apparatus for injecting thermoplastic material including means to form a tubular stream of plastic with a central stream containing a foaming agent.

摘要翻译： 用于注射热塑性材料的装置，包括用包含发泡剂的中心流形成管状塑料流的装置。

公开(公告)号：US3945535A

公开(公告)日：1976-03-23

申请号：US494462

申请日：1974-08-05

申请人： Hans Peter Leiste ,  Helmut Eckardt

发明人： Hans Peter Leiste ,  Helmut Eckardt

IPC分类号： B29C43/00 ,  B29C44/04 ,  B29C45/00 ,  B29C45/23 ,  B29C45/27 ,  B29C45/73 ,  B67D5/62

CPC分类号： B29C45/73 ,  B29C44/0492 ,  B29C45/23 ,  B29C45/27

摘要： Apparatus for feeding to a mold a plasticized synthetic material containing a foaming agent, the apparatus using a heated extruder and its associated transfer cylinder which emits the material in a thin stream by means of a nozzle.

摘要翻译： 用于向模具供给含有发泡剂的增塑合成材料的装置，使用加热挤出机的装置及其相关联的传送滚筒，其通过喷嘴以薄流体发射材料。

公开(公告)号：US08246871B2

公开(公告)日：2012-08-21

申请号：US13087539

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 ,  B29C45/1711 ,  B29C2045/0087 ,  B29C2045/1707 ,  B29C2045/1712 ,  B29C2045/1719 ,  B29C2045/1727

摘要： The invention relates to a device for the injection moulding of a moulded part (2) comprising a void (1), wherein a projectile (10) can be positioned at a fluid injection nozzle (8) in the region of a fluid aperture (9), which projectile (10) can be caused to flow in the direction of the longitudinal axis (L). To allow the production of moulded parts with enclosed voids in a better way the invention is characterized in that the fluid injection nozzle (8) comprises a section (11) entering into a cavity (5) of a mould, which section (11) is free from any undercut in a direction (E) of insertion of the fluid injection nozzle (8) into the cavity (5), wherein an angle (α) is arranged between a longitudinal axis (L) and the direction (E) of insertion.

摘要翻译： 本发明涉及一种用于注塑成型包括空隙（1）的模制件（2）的装置，其中抛射体（10）可位于流体孔（9）的区域中的流体注射喷嘴（8）处， ），可以使弹丸（10）在纵向轴线（L）的方向上流动。 为了更好地生产具有封闭空隙的模制零件，本发明的特征在于流体喷射喷嘴（8）包括进入模具的空腔（5）的部分（11），该部分（11）是 在流体注入喷嘴（8）插入空腔（5）的方向（E）上没有任何底切，其中在纵向轴线（L）和插入方向（E）之间布置有角度（α） 。

公开(公告)号：US06713014B2

公开(公告)日：2004-03-30

申请号：US09790212

申请日：2001-02-21

申请人： Helmut Eckardt

发明人： Helmut Eckardt

IPC分类号： B29D2200

CPC分类号： B29C45/1703 ,  B29C45/16 ,  B29C45/1704 ,  B29C45/1711 ,  B29C2045/1707 ,  B29C2045/1708 ,  B29C2045/1709 ,  B29C2045/1712 ,  B29C2045/1727

摘要： The invention relates to a method and an apparatus for injection molding thermoplastic molded parts, having at least one cavity. The method comprises the following steps: a) injecting thermoplastic melt from an injection unit along a melt flow path into the cavity of an injection molding tool; b) injecting a fluid into the still liquid plastic material, so that the plastic material is pressed against the walls of the cavity; c) allowing the plastic material to cool until it forms the self-supporting molded part; and d) removing the molded part from the cavity of the injection molding tool.

摘要翻译： 本发明涉及一种注射成型热塑性成型件的方法和装置，其具有至少一个空腔。 该方法包括以下步骤：a）将来自注射单元的热塑性熔体沿着熔体流动路径注入到注射成型工具的空腔中; b）将液体注入静止液体塑料材料中，使得塑料材料被压靠在空腔的壁上; c）允许塑料材料冷却直至形成自支撑模制件; 以及d）从注射成型工具的空腔中取出模制部件。