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：US5770237A

公开(公告)日：1998-06-23

申请号：US755624

申请日：1996-11-25

申请人： Matthew Emmett Sayer ,  Kenneth Richard Crow

发明人： Matthew Emmett Sayer ,  Kenneth Richard Crow

IPC分类号： B29C45/17 ,  B29C45/03

CPC分类号： B29C45/1734 ,  B29C2045/1738

摘要： The production of an injection moulding of plastics material that includes introducing a supply of plastics material through one or more openings in a mould space, and introducing by way of at least one gas supply passage, a pressurized gas through a separate opening in the mould space into the plastics material within the mould space whereby the gas creates a gas containing cavity in the plastics material. An opening and closing of the gas supply passage is controlled by a valve which is opened by the pressurized gas with the valve featuring a valve port at the outlet end of the gas passage, and a movable valve member extending longitudinally of the gas passage for opening and closing the valve port. The valve member at least when in its extended or valve port open position, protrudes into the mould space and penetrates the plastics material to assist the gas in entering the plastics material. Also, with the valve member in its withdrawn or valve port closed position, plastics material is shut off from entering the end of the passage from the mould space.

摘要翻译： 生产塑料材料的注射成型，其包括通过模具空间中的一个或多个开口引入塑料材料，并且通过至少一个气体供应通道引入加压气体通过模具空间中的单独开口 进入模具空间内的塑料材料，由此气体在塑料材料中产生气体容纳空腔。 气体供给通道的打开和关闭由通过加压气体打开的阀门控制，阀门在气体通道的出口端具有阀口，以及可移动阀件，其沿气体通道纵向延伸以打开 并关闭阀口。 阀构件至少在其延伸或阀口打开位置时，突出到模具空间中并且穿透塑料材料以帮助气体进入塑料材料。 而且，当阀构件处于其抽出或阀口关闭位置时，塑料材料被切断，从模具空间进入通道的端部。

公开(公告)号：US4474717A

公开(公告)日：1984-10-02

申请号：US381105

申请日：1982-05-24

申请人： James W. Hendry

发明人： James W. Hendry

IPC分类号： B29C59/00 ,  B29C44/04 ,  B29C44/10 ,  B29C45/00 ,  B29C45/17 ,  B29D27/00

CPC分类号： B29C45/1734 ,  B29C44/0461 ,  B29C44/105 ,  B29C45/1704 ,  B29C2045/1738 ,  Y10S264/83 ,  Y10S425/812

摘要： A method and apparatus for making a twin-wall internally corrugated plastic structural part provided with a smooth, dense, solid, thin walled, non-cellular skin comprising injecting a thermoplastic or resin material into a pair of closed mold members which define a sealed cavity. A small amount of plastic material is initially injected into the cavity with the material impinging upon and being dispersed over the mold members thereby forming a generally continuous thin skin substantially the mold surfaces. Thereafter, successively and intermittently injecting an inert gas under pressure through one mold member during continued injection of the plastic material into the cavity thereby pressurizing the skin against the walls of the mold cavity and progressively commingling the inert gas under pressure and the inwardly flowing plastic material as both enter the cavity until the cavity is filled with an internal corrugated body integral with and bonded to the skin. Further steps include cooling the twin-wall internally corrugated structural part to permit the same to solidify as an integral unit and venting the mold cavity to atmosphere to relieve pressure from the corrugated plastic structural part. The intermittent injection of the inert gas introduces minute amounts of pressurized gas into the continuously injected plastic material.

摘要翻译： 一种用于制造双壁内波纹塑料结构部件的方法和装置，其具有光滑，致密，固体，薄壁，非细胞表皮，包括将热塑性或树脂材料注射到限定密封腔的一对闭合的模具构件中 。 最初将少量的塑料材料注入到空腔中，其中材料撞击并分散在模具构件上，从而基本上形成基本上连续的薄的表皮。 此后，在将塑料材料持续注入空腔期间，连续地和间歇地将压力下的惰性气体注入一个模具构件，从而使皮肤抵靠模腔的壁加压并且在压力下逐渐混合惰性气体和向内流动的塑料材料 因为两者都进入空腔，直到腔充满与皮肤成一体并与皮肤结合的内部波纹体。 进一步的步骤包括冷却双壁内部波纹状结构部件，使其能够固化为整体单元，并将模具腔排放到大气中以缓解波纹状塑料结构部件的压力。 间歇地注入惰性气体将少量的加压气体引入连续注入的塑料材料中。

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：US4555225A

公开(公告)日：1985-11-26

申请号：US654433

申请日：1984-09-26

申请人： James W. Hendry

发明人： James W. Hendry

IPC分类号： B29C44/04 ,  B29C44/10 ,  B29C45/17 ,  B29F1/10

CPC分类号： B29C44/0461 ,  B29C44/105 ,  B29C45/1704 ,  B29C45/1734 ,  B29C2045/1738 ,  Y10S264/83

摘要： A method and apparatus for making a twin-wall internally corrugated plastic structural part provided with a smooth, dense, solid, thin walled, non-cellular skin comprising injecting a thermoplastic or resin material into a pair of closed mold members which define a sealed cavity. A small amount of plastic material is initially injected into the cavity with the material impinging upon and being dispersed over the mold members thereby forming a generally continuous thin skin substantially the mold surfaces. Thereafter, successively and intermittently injecting an inert gas under pressure through one mold member during continued injection of the plastic material into the cavity thereby pressurizing the skin against the walls of the mold cavity and progressively commingling the inert gas under pressure and the inwardly flowing plastic material as both enter the cavity until the cavity is filled with an internal corrugated body integral with and bonded to the skin. Further steps include cooling the twin-wall internally corrugated structural part to permit the same to solidify as an integral unit and venting the mold cavity to atmosphere to relieve pressure from the corrugated plastic structural part. The intermittent injection of the inert gas introduces minute amounts of pressurized gas into the continuously injected plastic material.

摘要翻译： 一种用于制造双壁内波纹塑料结构部件的方法和装置，其具有光滑，致密，固体，薄壁，非细胞皮肤，包括将热塑性或树脂材料注射到限定密封腔的一对封闭的模具构件中 。 最初将少量的塑料材料注入到空腔中，其中材料撞击并分散在模具构件上，从而基本上形成基本上连续的薄的表皮。 此后，在将塑料材料持续注入空腔期间，连续地和间歇地将压力下的惰性气体注入一个模具构件，从而使皮肤抵靠模腔的壁加压并且在压力下逐渐混合惰性气体和向内流动的塑料材料 因为两者都进入空腔，直到腔充满与皮肤成一体并与皮肤结合的内部波纹体。 进一步的步骤包括冷却双壁内部波纹状结构部件，使其能够固化为整体单元，并将模具腔排放到大气中以缓解波纹状塑料结构部件的压力。 惰性气体的间歇注入将少量的加压气体引入连续注入的塑料材料中。