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1. 发明授权

US4896969A Method and apparatus for melting and conveying plasticated material 失效
标题翻译：用于熔化和输送增塑材料的方法和装置
公开(公告)号：US4896969A
公开(公告)日：1990-01-30
申请号：US149962
申请日：1988-02-05
申请人： Robert F. Dray
发明人： Robert F. Dray
IPC分类号： B29B7/42 , B29C47/62
CPC分类号： B29C47/625 , B29B7/429 , B29C47/60 , B29C47/0021
摘要： This invention relates to a method and apparatus for melting and conveying plasticated materials by independently developing an initial melt film which is necessary for proper conveying of the material. The apparatus includes a barrel having a cylindrical bore therethrough, a shaft rotatable in said bore which has a substantially circular cross-section, the shaft and bore defining a feed section, a metering section and a transition section between the feed and metering sections. The shaft is provided with a helical first channel means integral with the shaft for conveying said plasticated material in a downstream direction through the feed section, the transition section, and the metering section when the shaft is rotated. A helical second channel means for producing an initial melt film is provided integral with the shaft for subjecting the material in the second channel means to high initial shear rates to rapidly form a melted film of plasticated material in proximity to a point of commencement of the feed section. The second channel means terminates at a point of beginning of the transition section whereupon the first channel means has a step through the transition section which step disappears before a point of beginning of the metering section.
摘要翻译：本发明涉及一种通过独立地开发适当输送材料所需的初始熔融薄膜来熔化和输送增塑材料的方法和装置。该装置包括具有穿过其中的圆柱形孔的筒，可在所述孔中旋转的轴，其具有基本上圆形的横截面，所述轴和孔限定进给部，计量部和进给部与计量部之间的过渡部。轴设置有与轴一体的螺旋形第一通道装置，用于当轴旋转时沿着下游方向通过进给部分，过渡部分和计量部分输送所述塑化材料。用于生产初始熔膜的螺旋形第二通道装置与轴一体设置，用于使第二通道装置中的材料受到高的初始剪切速率，以在进料的开始点附近快速形成塑化材料的熔融膜部分。第二通道装置在过渡部分的开始点终止，因此第一通道装置具有穿过过渡部分的步骤，该步骤在计量部分的开始点之前消失。

2. 发明授权

US5258158A Positive-type non-return valve and method of using valve 失效
标题翻译：正型止回阀及其使用方法
公开(公告)号：US5258158A
公开(公告)日：1993-11-02
申请号：US805019
申请日：1991-12-11
申请人： Robert F. Dray
发明人： Robert F. Dray
IPC分类号： B29C45/50 , B29C45/52 , B29C45/76 , B29C45/20
CPC分类号： B29C45/50 , B29C45/52 , B29C45/76
摘要： A positive-type, non-return valve (10) primarily for use with an injection molding machine utilizes a frame (12) which surrounds a first bore (34) and a second bore (32). The second bore (32) is accessed by inlets (30). Outlet passages (40) are located downstream of said inlet (30) and connect second bore (32) with an accumulation area (6). A piston (60) is dimensioned to slidably fit within the first bore (34) and extend into the second bore (32). In a downstream position, the piston (60) allows positive flow of material from the inlet (30) to the outlet (40). In an upstream position, the piston (60) positively blocks flow of material from the inlet (30) to the outlet (40). The piston (60) can be forced to its upstream position at the beginning of the injection step or can be preclosed by maintaining back pressure on the screw (2) prior to injection.
摘要翻译：主要用于注塑机的正型止回阀（10）利用围绕第一孔（34）和第二孔（32）的框架（12）。第二孔（32）由入口（30）进入。出口通道（40）位于所述入口（30）的下游，并且将第二孔（32）与积聚区域（6）连接。活塞（60）的尺寸设计成可滑动地装配在第一孔（34）内并延伸到第二孔（32）中。在下游位置，活塞（60）允许材料从入口（30）到出口（40）的正向流动。在上游位置，活塞（60）积极阻止材料从入口（30）流到出口（40）。活塞（60）可以在注射步骤开始时被迫到其上游位置，或者可以通过在注射之前维持螺杆（2）上的背压来预先封闭。

3. 发明授权

US4842414A Mixing device for a feed screw 失效
标题翻译：进料螺杆混合装置
公开(公告)号：US4842414A
公开(公告)日：1989-06-27
申请号：US97192
申请日：1987-09-16
申请人： Robert F. Dray
发明人： Robert F. Dray
IPC分类号： B29B7/42
CPC分类号： B29B7/421 , B29C47/6018
摘要： This invention relates to a mixing device for a feed screw for melting and conveying plasticated material of the type which rotates about a longitudinal axis in a barrel of an apparatus for melting and conveying plasticated material. The feed screw includes consecutive feed, transition, and metering sections, and further includes at least one helical main channel for conveying material in a downstream direction. The mixing device includes a cylinder having a clearance from the inside of the barrel, which cylinder rotates with the feed screw about said axis within the barrel. The outer surface of the cylinder is provided with at least one continuous mixing channel which extends over the surface of the cylinder, the channel being disposed in alternate upstream and downstream directions wherein material conveyed in the mixing channel is caused to alternately reverse its direction while proceeding through the mixing channel. An inlet is provided to admit material from the main channel of the feed screw into the mixing channel. An outlet is also provided to return said material from the mixing channel into the main channel of said feed screw. Because the material is caused to alternately reverse the direction of its flow external to the screw, improved mixing of the material being processed is obtained.
摘要翻译：本发明涉及一种用于熔化和输送一种用于熔化和输送类型的塑料材料的混合装置，该塑料材料围绕用于熔化和输送塑化材料的装置的筒体中的纵向轴线旋转。进料螺杆包括连续进料，过渡和计量部分，并且还包括用于在下游方向输送材料的至少一个螺旋主通道。混合装置包括具有从筒的内部的间隙的圆柱体，该圆柱体与馈送螺杆围绕筒体内的所述轴线旋转。气缸的外表面设置有至少一个在气缸表面上延伸的连续混合通道，通道设置在交替的上游和下游方向，其中在混合通道中传送的材料在进行过程中交替地反向其方向通过混合通道。提供入口以将材料从进料螺杆的主通道引入混合通道。还提供出口以将所述材料从混合通道返回到所述进料螺杆的主通道中。由于使材料交替地反转其在螺杆外部的流动方向，因此获得了被处理材料的混合。

4. 发明授权

US5071255A Apparatus for varying pressure within a screw channel 失效
标题翻译：用于在螺旋通道内改变压力的装置
公开(公告)号：US5071255A
公开(公告)日：1991-12-10
申请号：US565158
申请日：1990-08-02
申请人： Robert F. Dray , Bryan C. Bennett
发明人： Robert F. Dray , Bryan C. Bennett
IPC分类号： B29B7/30 , B29B7/38 , B29B7/42 , B29B7/58 , B29C45/48 , B29C45/60 , B29C47/36 , B29C47/38 , B29C47/60 , B29C47/92
CPC分类号： B29C47/6006 , B29B7/428 , B29C47/38 , B29C47/92 , B29C2947/92019 , B29C2947/92209 , B29C2947/9238 , B29C2947/924 , B29C2947/92514 , B29C2947/9259 , B29C2947/92704 , B29C2947/92876 , B29C2947/92885 , B29C2947/92952 , B29C47/0009
摘要： An improved apparatus for varying the pressure within a screw channel which apparatus includes a shaft having a helical flight defining a channel between consecutive turns of the flight. The screw is rotatable within a barrel. A radially movable first member is disposed at a right angle to a longitudinal axis of the screw where the plasticated material has undergone partial melting. A reciprocatively movable second member is disposed within a bore through the shaft coaxial with the axis and includes a cam slidably engaged with an inner end of the first member such that the first member can be extended into the screw channel when the second member is moved in one direction and retracted from the channel when the second member is moved in another direction. At an upstream end of the second member there is provided a rotatable thrust transmitting coupling which allows rotation of the second member relative to a male threaded portion secured to the coupling and coaxial with the second member. The male threaded portion is engageable with a fixed female threaded portion. An adjusting flat is provided on the male threaded portion. There is also provided apparatus for automatically maintaining a predetermined pressure or temperature in a screw channel.
摘要翻译：一种用于改变螺旋通道内的压力的改进装置，该装置包括具有在飞行的连续转弯之间限定通道的螺旋形飞行的轴。螺杆可在一个桶内旋转。可径向移动的第一构件设置成与塑性材料已经经历部分熔融的螺杆的纵向轴线成直角。可往复运动的第二构件通过与轴线同轴的轴设置在孔内，并且包括与第一构件的内端可滑动地接合的凸轮，使得当第二构件移动时第一构件可以延伸到螺纹通道中一个方向并且当第二构件沿另一个方向移动时从通道缩回。在第二构件的上游端设置有可旋转的推力传递联接器，其允许第二构件相对于固定到联接器并与第二构件同轴的阳螺纹部分旋转。外螺纹部分可与固定内螺纹部分接合。在外螺纹部分上设置有调整平面。还提供了用于在螺旋通道中自动维持预定压力或温度的装置。

5. 发明授权

US4723847A Apparatus for varying pressure within a screw channel 失效
标题翻译：用于在螺旋通道内改变压力的装置
公开(公告)号：US4723847A
公开(公告)日：1988-02-09
申请号：US15665
申请日：1987-02-17
申请人： Robert F. Dray
发明人： Robert F. Dray
IPC分类号： B29C47/60 , B29C47/64 , B29C47/92 , B29B1/06
CPC分类号： B29C47/605 , B29C47/60 , B29C47/6081 , B29C47/92 , B29C2947/92514 , B29C2947/926 , B29C2947/92876 , B29C47/0009
摘要： This invention relates to apparatus for continuously varying the pressure within a screw channel of a plasticating machine by way of a variable restriction in the screw channel. The apparatus includes a cylindrical barrel, a shaft rotatable within said barrel having a substantially circular cross-section and a longitudinal axis for rotation concentric with the barrel. The shaft is provided with a helical screw channel which is defined between successive turns of at least one helical flight integrally formed with the shaft. At least one radially movable first member is disposed at a right angle to said axis within the channel at a location along the axis and is located within the channel at a location along the axis at which the material being processed is substantially melted. A reciprocatively movable second member is disposed within a cylindrical bore through said shaft along the axis of rotation, the second member having a conical end portion which cooperates with an inner end of said first member such that said first member is movable in a radially inward or outward direction in response to the reciprocating movement of the second member. The inward or outward location of the first member provides a continuously variable restriction in the screw channel which increases or decreases pressure in an upstream direction within the channel.
摘要翻译：本发明涉及通过螺杆通道中的可变限制连续地改变塑化机的螺旋通道内的压力的装置。该装置包括一个圆柱形筒体，一个可旋转在所述筒体内的轴，其具有基本上圆形的横截面和与该筒同心旋转的纵向轴线。轴设置有螺旋螺旋通道，该螺旋通道限定在与轴一体形成的至少一个螺旋形飞行器的连续匝之间。至少一个可径向移动的第一构件在沿着轴线的位置处在通道内以与所述轴线成直角的方式设置，并且位于沿着被处理材料基本上熔化的轴线的位置处的通道内。可往复运动的第二构件沿着旋转轴线设置在通过所述轴的圆柱形孔内，第二构件具有锥形端部，其与所述第一构件的内端配合，使得所述第一构件可在径向向内或响应于第二构件的往复运动而向外的方向。第一构件的向内或向外位置在螺旋通道中提供连续可变的限制，其增加或减小通道内的上游方向上的压力。

6. 发明授权

US4444507A Apparatus and method for melting and conveying plasticated material 失效
标题翻译：熔化和输送塑化材料的设备和方法
公开(公告)号：US4444507A
公开(公告)日：1984-04-24
申请号：US392759
申请日：1982-06-28
申请人： Robert F. Dray
发明人： Robert F. Dray
IPC分类号： B29C47/60 , B29B1/06
CPC分类号： B29C47/6081 , B29C47/60 , B29C47/0009
摘要： This invention is directed to an apparatus and method for melting and conveying plasticated material. The invention includes a screw conveyer which has a shaft with one or more helical flights rotating in the bore of the barrel of an extruder. At a location in the screw channel after which the melted material will be dispersed into the remaining solids bed, there is provided a groove in the shaft of the screw through which the semi-melted or agglomerated material is diverted by a protrusion which extends across the channel of the screw to the groove. The additional heat transferred to the material resulting from the enhanced distribution of melted and solid material which occurs as the semi-melted material is diverted through the groove and back into the screw channel improves the quality of the processed material.
摘要翻译：本发明涉及一种用于熔化和输送增塑材料的装置和方法。本发明包括螺旋输送机，该螺旋输送机具有一个轴，该轴具有一个或多个在挤出机的筒的孔中旋转的螺旋形螺旋。在螺旋通道中的一个位置处，熔融的材料将分散在剩余的固体床中，在螺杆的轴上设置有一个凹槽，半熔融或聚集的材料通过该凹槽被突出部分转过，螺丝通道槽。由于半熔融材料通过凹槽转移回到螺旋通道中而发生的熔化和固体材料的分布增加而传递到材料上的附加热量提高了加工材料的质量。

7. 发明授权

US5470514A Injection molding method for a shot of determined mass 失效
标题翻译：注射成型法测定质量
公开(公告)号：US5470514A
公开(公告)日：1995-11-28
申请号：US114685
申请日：1993-08-31
申请人： Robert F. Dray
发明人： Robert F. Dray
IPC分类号： B29C45/50 , B29C45/52 , B29C45/76
CPC分类号： B29C45/52 , B29C45/50 , B29C45/76
摘要： A non-return valve (10) primarily for use with an injection molding machine utilizes a frame (12) which surrounds a first bore (34) and a second bore (32). The second bore (32) is accessed by inlets (30). Outlet passages (40) are located downstream of said inlet (30) and connect second bore (32) with an accumulation area (6). A piston (60) is dimensioned to slidably fit within the first bore (34) and extend into the second bore (32). In a downstream position, the piston (60) allows positive flow of material from the inlet (30) to the outlet (40). In an upstream position, the piston (60) positively blocks flow of material from the inlet (30) to the outlet (40). The piston (60) can be forced to its upstream position at the beginning of the injection step or can be preclosed by eliminating rearward movement prior to injection. A method of injection molding involves precisely determining the mass of the shot and by limiting the rearward translation of the screw during recovery and then building the pressure of the accumulated material to a predetermined pressure.
摘要翻译：主要用于注塑机的止回阀（10）利用围绕第一孔（34）和第二孔（32）的框架（12）。第二孔（32）由入口（30）进入。出口通道（40）位于所述入口（30）的下游，并且将第二孔（32）与积聚区域（6）连接。活塞（60）的尺寸设计成可滑动地装配在第一孔（34）内并延伸到第二孔（32）中。在下游位置，活塞（60）允许材料从入口（30）到出口（40）的正向流动。在上游位置，活塞（60）积极阻止材料从入口（30）流到出口（40）。活塞（60）可以在注射步骤开始时被迫到其上游位置，或者可以通过在注入之前消除向后的运动来预先关闭活塞（60）。注射成型的方法包括精确地确定射出的质量，并通过限制回收期间螺杆的向后平移，然后将累积材料的压力建立到预定的压力。

8. 发明授权

US5151282A Positive-type non-return valve 失效
标题翻译：正型止回阀
公开(公告)号：US5151282A
公开(公告)日：1992-09-29
申请号：US699277
申请日：1991-05-13
申请人： Robert F. Dray
发明人： Robert F. Dray
IPC分类号： B29C45/50 , B29C45/52 , B29C45/76
CPC分类号： B29C45/52 , B29C45/50 , B29C45/76
摘要： A positive-type, non-return valve (10) primarily for use with an injection molding machine utilizes a frame (12) which surrounds a coaxial primary chamber (34). The primary chamber (34) is accessed by several passages. Inlets (30) allow material to be fed to a reduced diameter passage (34) adjacent to said primary chamber (32). Outlet passage (42) connects this reduced diameter passage (34) to outlet ports (40). A piston (60) is dimensioned to fit within said primary chamber (32) and reduced diameter passage (34). In a forward position, the piston (60) allows positive flow of material therethrough. In a rearward position, the piston (60) positively blocks flow of material from the inlet (30) to the outlet passage (42). The piston (60) is forced to its rearward position during the injection step.
摘要翻译：主要用于注塑机的正型单向阀（10）利用围绕同轴主室（34）的框架（12）。主室（34）通过几个通道进入。入口（30）允许材料被供给到与所述主室（32）相邻的减小直径的通道（34）。出口通道（42）将该直径减小的通道（34）连接到出口（40）。活塞（60）的尺寸被设计成适合于所述主室（32）和减径的通道（34）。在向前位置，活塞（60）允许材料正向流过。在向后的位置，活塞（60）肯定地阻止材料从入口（30）到出口通道（42）的流动。在注射步骤期间，活塞（60）被迫到其后部位置。

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