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公开(公告)号：USRE38265E1
公开(公告)日：2003-10-07
申请号：US09928230
申请日：2001-08-10
IPC分类号： B29C4573
CPC分类号： B29C45/7312
摘要： Injection molding hot runner apparatus having a cooled mold core with an elongated body portion with a front portion or head. A cooling tube extends centrally in body portion of the mold core. A cooling fluid circuit extends from the open front end of the cooling tube outwardly through a number of spaced radial bores. Each radial bore connects to an L-shaped duct leading back to a cylindrical space around the cooling tube.
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公开(公告)号：US5935621A
公开(公告)日：1999-08-10
申请号：US8995
申请日：1998-01-20
IPC分类号： B29C45/73
CPC分类号： B29C45/7312
摘要： Injection molding hot runner apparatus having a cooled mold core with an elongated body portion with a front portion or head. A cooling tube extends centrally in body portion of the mold core. A cooling fluid circuit extends from the open front end of the cooling tube outwardly through a number of spaced radial bores. Each radial bore connects to an L-shaped duct leading back to a cylindrical space around the cooling tube.
摘要翻译： 具有冷却模芯的注射成型热流道装置，其具有带有前部或头部的细长主体部分。 冷却管在模芯的主体部分中央延伸。 冷却流体回路从冷却管的开口前端向外延伸穿过多个间隔开的径向孔。 每个径向孔连接到导向冷却管周围的圆柱形空间的L形导管。
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公开(公告)号：US06286751B1
公开(公告)日：2001-09-11
申请号：US09614008
申请日：2000-07-11
IPC分类号： B23K120
CPC分类号： B29C45/1607 , B29C45/2725
摘要： Multi-layer injection molding apparatus having integral multi-layer melt dividing bushings seated in the melt distribution manifold for dividing a first melt passage extending to annular melt channels in heated nozzles. Matching melt channels machined in the front face of the first layer and the rear face of the second layer of each melt dividing bushing form a melt conduit which branches from an inlet to two spaced holes extending through the second layer. A pair of matching melt channels machined in the front face of the second layer and the rear face of the third layer of each melt dividing bushing form two melt conduits, each of which branch from one of the holes through the second layer to two of four spaced holes through the third layer. The four holes through the third layer align with four melt bores leading to the annular melt channel in one of the heated nozzles. A second melt passage may extend through a central bore in each melt dividing bushing to a central melt channel in the heated nozzle. In another embodiment, the first melt passage also extends through central holes in the second and third layers of the melt dividing bushing to a central melt channel in the heated nozzle. In this case, the second melt passage may extend through a melt bore through the melt dividing bushing or may similarly divide into two in a melt conduit extending between two of the layers of the melt dividing bushing.
摘要翻译： 多层注射成型装置具有整体的多层熔融分配衬套，其位于熔体分配歧管中，用于分割在加热喷嘴中延伸到环形熔体通道的第一熔体通道。 在第一层的前表面和每个熔体分隔衬套的第二层的后表面上加工的匹配熔体通道形成从入口分支到延伸穿过第二层的两个间隔开的孔的熔体管道。 在第二层的正面加工的一对匹配的熔体通道和每个熔体分配衬套的第三层的后表面形成两个熔体管道，每个熔体管道从一个孔穿过第二层分支到四个中的两个 穿过第三层的间隔开的孔。 通过第三层的四个孔与四个熔体孔对准，导致在一个加热喷嘴中的环形熔体通道。 第二熔体通道可以延伸穿过每个熔体分配衬套中的中心孔到加热喷嘴中的中心熔体通道。 在另一个实施例中，第一熔体通道还延伸穿过熔体分配衬套的第二和第三层中的中心孔到加热喷嘴中的中心熔体通道。 在这种情况下，第二熔体通道可以延伸穿过熔体分隔衬套的熔体孔，或者可以在熔体分配衬套的两个层之间延伸的熔体管道中类似地分成两部分。
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公开(公告)号：US6017209A
公开(公告)日：2000-01-25
申请号：US36909
申请日：1998-03-09
CPC分类号： B29C45/2711 , B29C45/2737 , B29C45/7312 , B29C2043/527
摘要： An injection molding one-piece gate and cavity insert to be mounted between a heated nozzle and a cavity. The insert has cooling fluid passages extending through it around the gate and cavity. The passages alternately extend both forwardly and rearwardly and inwardly and outwardly to improve cooling.
摘要翻译： 注射成型的单件门和空腔插入件安装在加热的喷嘴和空腔之间。 插入件具有围绕门和空腔延伸穿过其的冷却流体通道。 通道交替地向前和向后以及向内和向外地延伸以改善冷却。
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5.发明授权Injection molding apparatus having a melt bore through the front end of the pin 有权具有穿过销的前端的熔体孔的注塑设备公开(公告)号：US06270711B1
公开(公告)日：2001-08-07
申请号：US09215389
申请日：1998-12-18
IPC分类号： B29C4516
CPC分类号： B29C45/2725 , B29C45/1603 , B29C2045/161 , B29C2045/1648 , B29C2045/273 , B29K2105/253
摘要： Multi-cavity injection molding apparatus for three layer molding having elongated pins for fixed pin gating or valve gating. Each elongated pin has a central melt bore extending rearwardly from its front end to a number of laterally extending bores. A low viscosity barrier material such as EVOH or nylon flows through these bores to the gate leading to the cavity. This allows coinjection with fixed pins and sprue gating in one embodiment and by valve gating in another embodiment.
摘要翻译： 用于三层模制的多腔注射成型装置具有用于固定销浇口或阀门浇口的细长销。 每个细长销具有从其前端向后延伸到多个横向延伸的孔的中心熔体孔。 低粘度阻隔材料如EVOH或尼龙流经这些孔流到通向腔体的门。 这在一个实施例中允许具有固定销和浇道浇口的共注射，并且在另一个实施例中通过阀门浇注。
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6.发明授权
公开(公告)号：US5935616A
公开(公告)日：1999-08-10
申请号：US969756
申请日：1997-11-13
CPC分类号： B29C45/2725 , B29C45/1603 , B29C2045/273 , B29C2045/277
摘要： Injection molding apparatus for multi-layer molding two materials with different injection temperatures having an insulative air space extending between front and rear heated melt distribution manifolds. Heated nozzles extending from the front manifold each have a central melt channel and one or more annular melt channels extending around it. Melt transfer bushings each having a central melt bore extend across the air space to convey melt from the rear manifold to one of the melt channels in each heated nozzle. In one embodiment, each melt transfer bushing has a head portion which provides a spacer between the two manifolds, and an elongated stem portion which extends through a bore through the front manifold to one of the heated nozzles. An air space around the stem portion provides thermal separation between the melt from the rear manifold and the front manifold which is at a higher temperature.
摘要翻译： 用于多层成型的注射成型设备具有不同注射温度的两种材料，其具有在前后加热的熔体分配歧管之间延伸的绝缘空气空间。 从前歧管延伸的加热喷嘴均具有中心熔体通道和围绕其延伸的一个或多个环形熔体通道。 每个具有中心熔体孔的熔体传送衬套延伸穿过空气空间，以将熔体从后歧管传送到每个加热喷嘴中的熔体通道中的一个。 在一个实施例中，每个熔体传输衬套具有头部，其在两个歧管之间提供间隔件，以及细长的杆部分，其延伸穿过穿过前歧管的孔到一个加热的喷嘴。 杆部周围的空气空间提供了来自后歧管的熔体与处于较高温度的前歧管之间的热分离。
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7.发明授权Injection molding apparatus having a melt bore through the front end of the pin 失效具有穿过销的前端的熔体孔的注塑设备
公开(公告)号：US5935615A
公开(公告)日：1999-08-10
申请号：US969754
申请日：1997-11-13
CPC分类号： B29C45/2725 , B29C45/1603 , B29C2045/161 , B29C2045/1648 , B29C2045/273 , B29K2105/253
摘要： Multi-cavity injection molding apparatus for three layer molding having elongated pins for fixed pin gating or valve gating. Each elongated pin has a central melt bore extending rearwardly from its front end to a number of laterally extending bores. A low viscosity barrier material such as EVOH or nylon flows through these bores to the gate leading to the cavity. This allows coinjection with fixed pins and sprue gating in one embodiment and by valve gating in another embodiment.
摘要翻译： 用于三层模制的多腔注射成型装置具有用于固定销浇口或阀门浇口的细长销。 每个细长销具有从其前端向后延伸到多个横向延伸的孔的中心熔体孔。 低粘度阻隔材料如EVOH或尼龙流经这些孔流到通向腔体的门。 这在一个实施例中允许具有固定销和浇道浇口的共注射，并且在另一个实施例中通过阀门浇注。
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8.发明授权Injection molding apparatus with a one-piece gate insert locating a cylindrical valve member 失效注射成型设备，其具有定位圆柱形阀构件的一体式浇口插入件
公开(公告)号：US5849343A
公开(公告)日：1998-12-15
申请号：US854243
申请日：1997-05-09
CPC分类号： B29C45/2711 , B29C45/278 , B29C45/2806 , B29C45/30 , B29C2045/274 , B29C2045/308 , B29C45/2606
摘要： Valve gated injection molding apparatus having a valve member with a cylindrical front end portion. A one-piece insert mounted at the front end of a nozzle has both a gate and locating blades extending inwardly from an outer body into a central opening leading to the gate. The inner surfaces of the blades fit around the front end portion of the reciprocating valve pin to guide and very accurately locate it in alignment with the gate. Very accurately maintaining the front end portion of the reciprocating valve pin in alignment with the gate allows it to be cylindrical rather than tapered which produces a much cleaner gate mark.
摘要翻译： 阀门浇注注射成型装置具有带有圆柱形前端部分的阀构件。 安装在喷嘴前端的一体式插入件具有从外部体向内延伸到通向门的中心开口的门和定位刀片。 叶片的内表面装配在往复式阀销的前端部分周围，以引导并非常准确地将其定位成与门对齐。 非常精确地保持往复式阀销的前端部与门对准允许其为圆柱形而不是锥形，这产生更清洁的门标。
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9.发明授权Five layer injection molding apparatus having four position valve member actuating mechanism 有权具有四位置阀构件致动机构的五层注塑设备公开(公告)号：US06274075B1
公开(公告)日：2001-08-14
申请号：US09327641
申请日：1999-06-08
IPC分类号： B28B722
CPC分类号： B29C45/1607 , B29C2045/1612 , B29C2045/1648 , B29C2045/273 , B29C2045/2872 , B29K2105/253
摘要： Valve gated multi-cavity injection molding apparatus for five layer molding having actuating mechanisms for reciprocating elongated valve members between four different positions. Each actuating mechanism has a front and a rear aligned cylinders, a first piston connected to the head of one of the valve members in the front cylinder and second and third pistons in the rear cylinder. The third piston has a stem portion which extends forwardly through the second piston into the front cylinder. Hydraulic pressure from four hydraulic lines connected to each actuating mechanism reciprocates each elongated valve member between the different positions. In the first closed position, the front end of the valve member is seated in the gate. In the second position, the front end of the valve member is retracted sufficiently to allow an initial amount of PET to flow from an outer annular melt channel through the gate. Then the valve member is retracted further to a third position to allow simultaneous flow of the PET and a barrier material from an inner annular melt channel. Then the valve member is retracted to a fully open position which allows the simultaneous flow of PET from a central melt channel. When the cavity is almost filled, the valve member returns briefly to the second position for filling before returning to the closed position for ejection.
摘要翻译： 用于五层模制的阀门浇口多腔注射成型装置，其具有用于在四个不同位置之间的往复式细长阀构件的致动机构。 每个致动机构具有前和后对齐的气缸，第一活塞连接到前气缸中的一个阀构件的头部以及后气缸中的第二和第三活塞。 第三活塞具有杆部，其向前延伸穿过第二活塞进入前缸。 连接到每个致动机构的四个液压管路的液压压力使每个细长阀构件在不同位置之间往复运动。 在第一关闭位置，阀构件的前端位于门中。 在第二位置，阀构件的前端充分缩回以允许初始量的PET从外部环形熔体通道流过门。 然后，阀构件进一步缩回到第三位置，以允许PET和阻挡材料从内部环形熔体通道同时流动。 然后，阀构件缩回到完全打开的位置，其允许从中心熔体通道同时流动PET。 当空腔几乎被填充时，阀构件在返回到关闭位置之前短暂返回到第二位置以进行填充。
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公开(公告)号：US6135751A
公开(公告)日：2000-10-24
申请号：US969755
申请日：1997-11-13
CPC分类号： B29C45/1607 , B29C45/2725
摘要： Multi-layer injection molding apparatus having integral multi-layer melt dividing bushings seated in the melt distribution manifold for dividing a first melt passage extending to annular melt channels in heated nozzles. Matching melt channels machined in the front face of the first layer and the rear face of the second layer of each melt dividing bushing form a melt conduit which branches from an inlet to two spaced holes extending through the second layer. A pair of matching melt channels machined in the front face of the second layer and the rear face of the third layer of each melt dividing bushing form two melt conduits, each of which branch from one of the holes through the second layer to two of four spaced holes through the third layer. The four holes through the third layer align with four melt bores leading to the annular melt channel in one of the heated nozzles. A second melt passage may extend through a central bore in each melt dividing bushing to a central melt channel in the heated nozzle. In another embodiment, the first melt passage also extends through central holes in the second and third layers of the melt dividing bushing to a central melt channel in the heated nozzle. In this case, the second melt passage may extend through a melt bore through the melt dividing bushing or may similarly divide into two in a melt conduit extending between two of the layers of the melt dividing bushing.
摘要翻译： 多层注射成型装置具有整体的多层熔融分配衬套，其位于熔体分配歧管中，用于分割在加热喷嘴中延伸到环形熔体通道的第一熔体通道。 在第一层的前表面和每个熔体分隔衬套的第二层的后表面上加工的匹配熔体通道形成从入口分支到延伸穿过第二层的两个间隔开的孔的熔体管道。 在第二层的正面加工的一对匹配的熔体通道和每个熔体分配衬套的第三层的后表面形成两个熔体管道，每个熔体管道从一个孔穿过第二层分支到四个中的两个 穿过第三层的间隔开的孔。 通过第三层的四个孔与四个熔体孔对准，导致在一个加热喷嘴中的环形熔体通道。 第二熔体通道可以延伸穿过每个熔体分配衬套中的中心孔到加热喷嘴中的中心熔体通道。 在另一个实施例中，第一熔体通道还延伸穿过熔体分配衬套的第二和第三层中的中心孔到加热喷嘴中的中心熔体通道。 在这种情况下，第二熔体通道可以延伸穿过熔体分隔衬套的熔体孔，或者可以在熔体分配衬套的两个层之间延伸的熔体管道中类似地分成两部分。
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