公开(公告)号：US4496303A

公开(公告)日：1985-01-29

申请号：US382391

申请日：1982-05-27

申请人： Robert J. Loubier

发明人： Robert J. Loubier

IPC分类号： B29C45/00 ,  B29F1/03

CPC分类号： B29C45/0013 ,  Y10S425/033

摘要： A plastic bonded magnet is formed of a solidified mixture of thermoplastic powder and magnetic particles capable of being permanently magnetized. The magnet in one form is cylindrical and provided with a coaxial bore. The particles are substantially uniformly dispersed throughout the magnet in coaxial sections extending between the cylinder axis and the periphery of the magnet. Also the particles are substantially commonly aligned throughout. A given quantity of the particles may be orientable which leads to the common alignment.The method of fabricating the magnet includes the steps of mixing quantities of plastic material and solid magnetizable particles to obtain a substantially uniform mixture. The mixture is injection molded to form the magnetic body, the molding step including the injection of the mixture into a cavity having a form of the body, primarily cylindrical, and through a disc-shaped gating orifice on the aforesaid axis, which is midway between the body ends. The orifice opens radially into the cavity uninterruptedly completely around said axis whereby the molten mixture fills the cavity uniformly radially from the axis and the perimeter of the orifice. Upon solidification of the molten plastic, the particles will be secured in position.

摘要翻译： 塑料粘结磁体由能够永久磁化的热塑性粉末和磁性颗粒的固化混合物形成。 一种形式的磁体是圆柱形的并且具有同轴孔。 颗粒基本均匀地分散在整个磁体中，同轴部分在气缸轴线和磁体周边之间延伸。 此外，颗粒总体上基本上一致对齐。 给定量的颗粒可以是可取向的，这导致共同对准。 制造磁体的方法包括混合塑料材料和固体可磁化颗粒的量以获得基本均匀的混合物的步骤。 该混合物被注射成型以形成磁体，该模制步骤包括将混合物注入具有主体形状的主体的空腔中，主要为圆柱形，并通过位于上述轴线之间的盘形门控孔 身体结束。 孔口围绕所述轴线不间断地直接地打开到空腔中，由此熔融混合物从孔的轴线和周边径向均匀地填充空腔。 在熔融塑料凝固时，颗粒将被固定就位。

公开(公告)号：US4406609A

公开(公告)日：1983-09-27

申请号：US285274

申请日：1981-07-20

申请人： Jobst U. Gellert

发明人： Jobst U. Gellert

IPC分类号： B29C37/00 ,  B23P15/00 ,  B29C45/00 ,  B29C45/23 ,  B29C45/28 ,  B29F1/03

CPC分类号： B29C45/2806 ,  B23P15/00 ,  B29C2045/2787 ,  B29C2045/2858

摘要： This invention relates to an improved valve pin for an injection molding system and a method of making the same. The elongated valve pin has a tip end portion which extends from a larger driven end portion into the flow of melt to the cavity. The elongated tip end portion is provided with a desired combination of strength and thermal conductivity by having a copper core inside a steel casing. The casing is made by brazing a tip end cap member to a hollow sleeve. A predetermined quantity of copper wire is then inserted into the casing and melted in a vacuum furnace to form an integral construction. The excess sleeve is then cut off and the end is brazed into a well in the driven end portion of the valve pin. The tip end cap member is then machined to provide a tip end of a desired shape. Filling the copper into the steel casing in a vacuum furnace bonds them together without any insulative spaces, thereby relatively inexpensively providing a valve pin structure which has the necessary structural strength to withstand repeated closing forces, while at the same time providing for the improved transfer of heat along the valve pin to the gate area.

摘要翻译： 本发明涉及一种用于注射成型系统的改进的阀销及其制造方法。 细长的阀销具有从更大的从动端部延伸到熔体流到空腔的顶端部分。 通过在钢壳体内部具有铜芯，细长的尖端部分具有强度和导热性的期望组合。 外壳是通过将顶端盖构件钎焊到中空套筒而制成的。 然后将预定量的铜线插入壳体中并在真空炉中熔化以形成整体结构。 然后将多余的套筒切断，并且将端部钎焊到阀销的从动端部中的井中。 然后对前端盖构件进行加工以提供所需形状的末端。 在真空炉中将铜填充到钢壳体中将它们结合在一起而没有任何绝缘空间，从而相对便宜地提供具有必要的结构强度以承受反复闭合力的阀销结构，同时提供改进的 沿着阀针加热到浇口区域。

公开(公告)号：US4386899A

公开(公告)日：1983-06-07

申请号：US287112

申请日：1981-07-27

申请人： James E. Cook

发明人： James E. Cook

IPC分类号： B29C45/23 ,  B29C37/00 ,  B29C45/00 ,  B29C45/17 ,  B29C45/20 ,  B29C45/24 ,  B29C45/26 ,  B29C45/74 ,  B29F1/03

CPC分类号： B29C45/1753 ,  B29C45/20

摘要： A material injection assembly (10) of the type for injecting a resin material into a mold cavity including a body member (12) defining a nozzle (13) for injecting material into a mold (14) and including at least one central channel (16) for conveying a first material through the nozzle (13). The assembly is characterized by an internal purging mechanism for closing the nozzle (13) to the mold (14) while allowing the flow of purging material between the channel (18) supplying resin material to the control channel (16) and a debris channel (22). The purging mechanism further allows flow of purging material between a separate purging material channel (20) and the debris channel (22) to perform a post-purge function.A cooling system is also disclosed which provides a coolant supply channel (70) which bifurcates into two channels (75, 77) about the central channel (16) proximal to the nozzle (13) to provide maximum cooling at the portion of the assembly (13) closest to the mold (14).

摘要翻译： 一种用于将树脂材料注入模腔的材料注入组件（10），其包括限定用于将材料注入模具（14）中并且包括至少一个中心通道（16）的喷嘴（13）的主体构件（12） ），用于通过喷嘴（13）输送第一材料。 该组件的特征在于用于将喷嘴（13）关闭到模具（14）的内部清洗机构，同时允许清洗材料在供应树脂材料的通道（18）与控制通道（16）之间的流动和碎屑通道 22）。 清洗机构还允许清洗材料在单独的清洗材料通道（20）和碎屑通道（22）之间流动以执行后清洗功能。 还公开了一种冷却系统，其提供冷却剂供应通道（70），该冷却剂供应通道（70）分布在靠近喷嘴（13）的中心通道（16）周围的两个通道（75,77）中，以在组件的该部分处提供最大的冷却 13）最接近模具（14）。

公开(公告)号：US4272236A

公开(公告)日：1981-06-09

申请号：US103425

申请日：1979-12-14

申请人： Herbert Rees ,  Robert D. Schad

发明人： Herbert Rees ,  Robert D. Schad

IPC分类号： B29C45/23 ,  B29F1/03

CPC分类号： B29C45/231

摘要： A nozzle for the introduction of liquefied plastic material into a mold has a channel terminating at one end in an injection orifice and adjoining at its other end a reduced bore serving for the guidance of a valve pin slidable with all-around clearance in that channel, the pin having a rear extremity projecting from its guide bore. A passage for the admission of liquefied molding material under pressure enters the channel at its junction with the reduced guide bore, rearwardly of a set of skew fins of the pin serving for additional guidance thereof in the channel and for imparting relative rotary motion to the flow and the pin. The orifice is blocked at the end of an injection operation by a pusher acting upon the projecting rear extremity; it is unblocked, upon withdrawal of the pusher, by the pressure of the molding material in the channel upon a forwardly facing annular shoulder of the pin.

摘要翻译： 用于将液化塑料材料引入模具的喷嘴具有一端在喷射孔中终止并且在其另一端相邻的通道，用于引导可在该通道中全向间隙滑动的阀销， 该销的后端从其导向孔突出。 用于在压力下进入液化模制材料的通道在其与减小的导向孔的接合处的通道处进入通道，后者位于一组引脚的偏斜翅片的后面，用于在通道中进一步引导，并且用于将相对旋转运动传递到流体 和针。 通过作用在突出的后端的推动器在注射操作结束时堵塞孔口; 通过在销的向前的环形肩部上的通道中的模制材料的压力，在推动器取出时，它被阻挡。

公开(公告)号：US4268241A

公开(公告)日：1981-05-19

申请号：US56855

申请日：1979-07-12

申请人： Herbert Rees ,  Robert D. Schad

发明人： Herbert Rees ,  Robert D. Schad

IPC分类号： B29C45/17 ,  B29C45/27 ,  B29F1/03 ,  B29F1/08

CPC分类号： B29C45/1782 ,  B29C45/27 ,  B29C45/2737 ,  B29C2045/2766 ,  B29C2045/2767 ,  B29C2045/2769

摘要： A nozzle for the injection of liquefied plastic material into the gate of a mold cavity has a tubular metallic body forming a sprue, the outer surface of this body being in contact with an annular heater in the shape of a closed shell whose interior is filled with a matrix of compacted MgO powder having one or more resistance wires embedded therein. The heater is held in position by a nut, threaded onto a gate-side extremity of the body, against a shoulder or a tapering surface portion thereof and is separated by an air space from a surrounding supporting structure.

摘要翻译： 用于将液化塑料材料注入模腔的浇口的喷嘴具有形成浇道的管状金属体，该主体的外表面与封闭壳体的形状的环形加热器接触，其内部填充有 具有嵌入其中的一个或多个电阻丝的压实的MgO粉末的基体。 加热器通过螺母保持在适当位置，该螺母被螺纹连接到主体的门侧末端上，抵靠肩部或其锥形表面部分，并由空气空间与周围的支撑结构隔开。

公开(公告)号：US4268240A

公开(公告)日：1981-05-19

申请号：US42348

申请日：1979-05-25

申请人： Herbert Rees ,  Robert D. Schad

发明人： Herbert Rees ,  Robert D. Schad

IPC分类号： B29C45/28 ,  B29F1/03 ,  B29F1/08

CPC分类号： B29C45/281 ,  B29C2045/2817 ,  B29C2045/2875

摘要： An injection gate of a mold cavity comprises an elongate valve rod which passes axially through a flow channel for molten plastic material and is guided in an extension of a thin-walled steel cylinder open at its opposite end toward an adjoining manifold plate. The rod extremity remote from the gate is secured to a tubular neck of a piston inside the cylinder whose stroke length is a fraction of the axial height of the cylinder's interior, a clearance around this neck providing space for drooling plastic while the length of the neck and of the peripheral cylinder wall serves for thermally insulating the manifold plate from the flow channel. The piston has a head sliding within an internal annular shoulder of the cylinder wall, proximal to the manifold plate, which is traversed by axially oriented bores communicating with the aforementioned clearance whereby pressure fluid such as compressed air can be selectively admitted from conduits in the manifold plate to either side of the piston head for reciprocating same together with the valve rod. A plurality of such valve-control pistons can be connected to these conduits in parallel for simultaneous actuation by the air pressure applied thereto.

摘要翻译： 模腔的注射门包括细长的阀杆，该细长阀杆轴向通过用于熔融塑性材料的流动通道，并且在其相对端朝相邻歧管板开口的薄壁钢瓶的延伸部中引导。 远离门的杆末端固定在气缸内的活塞的管状颈部，其行程长度是气缸内部轴向高度的一部分，围绕该颈部的间隙为颈部长度提供空间 并且周边圆筒壁用于将歧管板与流动通道热绝缘。 活塞具有在气缸壁的内部环形肩部内滑动的头部，靠近歧管板，该歧管板通过与上述间隙连通的轴向定向的孔横穿，从而可以选择性地从歧管中的管道进入压缩流体 活塞头的两侧与阀杆一起往复运动。 多个这样的阀控制活塞可以并联连接到这些管道，以通过施加到其上的空气压力同时致动。

公开(公告)号：US4260359A

公开(公告)日：1981-04-07

申请号：US972181

申请日：1978-12-21

申请人： W. Andrew Dannels ,  Robert W. Bainbridge

发明人： W. Andrew Dannels ,  Robert W. Bainbridge

IPC分类号： B29C43/00 ,  B29C33/00 ,  B29C41/00 ,  B29C45/00 ,  B29C45/12 ,  B29C45/22 ,  B29C45/27 ,  B29C45/30 ,  B29C45/37 ,  B29C45/73 ,  B29C45/77 ,  B29K101/10 ,  B29F1/03 ,  B29F1/05 ,  B29F1/08

CPC分类号： B29C45/2735 ,  B29C45/125 ,  B29C45/22

摘要： An improved nozzle feed assembly is described. The assembly includes temperature-controlled member, preferably cylindrical in shape, having a closed end and an open end. The open end is fitted with standard threads to facilitate attachment of the nozzle member to the feed barrel of a conventional screw-type molding machine. The nozzle member has an internal temperature controlling means and a plurality of feed outlets positioned on the periphery of the nozzle member near the closed end. The temperature maintained in the nozzle member is sufficiently high to maintain the thermosetting molding material within the nozzle member in a plasticized state and sufficiently low that no substantial curing of the thermosetting molding material takes place. In an alternate mode, the assembly includes a sleeve member positioned around the periphery of the nozzle member and moveable to cover and uncover the feed outlets in the periphery of the nozzle member. In such alternate mode, means are provided to move the sleeve member from a position wherein the feed outlets are covered when the mold faces are open to a position wherein the feed outlets are uncovered when the mold faces are closed.

摘要翻译： 描述了改进的喷嘴供给组件。 组件包括温度受控构件，优选圆柱形，具有闭合端和开口端。 开口端配有标准螺纹，以便于将喷嘴构件附接到常规螺旋型成型机的进料筒。 喷嘴构件具有内部温度控制装置和位于封闭端附近的喷嘴构件的周边上的多个进料出口。 保持在喷嘴构件中的温度足够高以将热固性模塑材料保持在喷嘴构件内处于塑化状态，并且足够低，使得不发生热固性模塑材料的实质固化。 在替代模式中，组件包括围绕喷嘴构件的周边定位的套筒构件，并且可移动以覆盖和露出喷嘴构件的周边中的进料出口。 在这种替代模式中，提供了将套筒构件从当模具面打开的位置移动到其中供给出口被覆盖的位置的装置，其中当模具面被关闭时，供给出口未被覆盖。

公开(公告)号：US4238182A

公开(公告)日：1980-12-09

申请号：US927300

申请日：1978-07-24

申请人： Gilbert Mollier

发明人： Gilbert Mollier

IPC分类号： B29C45/28 ,  B29F1/03 ,  B29F1/05

CPC分类号： B29C45/2806 ,  Y10S425/229

摘要： This device injects plastics material into a mould having a plurality of impressions. It comprises a distribution plate pierced with channels for the inlet of the plastics material to be injected and provided with heating means and an impression plate comprising a plurality of impression inserts into which the plastics material is to be injected. Injection nozzles are disposed between the distribution plate and the various impression inserts, each presenting an injection orifice opening into the impression insert associated therewith and being obturated by an obturator needle mounted to slide axially in the nozzle. The connection between the distribution plate and each nozzle is ensured by a material transfer tube engaged in two cavities made respectively in the distribution plate and the nozzle, opposite each other, the first communicating with a channel for the inlet of the plastics material and the second with the injection orifice of the nozzle, this transfer tube being in tight contact with the lateral walls of the two cavities via two respective spherical sectors provided on its side surface.

摘要翻译： 该装置将塑料材料注入具有多个印模的模具中。 它包括一个分配板，该分配板穿过要注入的塑料材料的入口的通道，并设有加热装置和一个压印板，该印模板包括要注塑塑料的多个印模插入件。 注射喷嘴设置在分配板和各种压印插入件之间，每个印刷插入件具有通向与其相关联的压印插入件中的注入孔，并且被安装成在喷嘴中轴向滑动的闭塞针塞住。 分配板和每个喷嘴之间的连接通过接合在分配板和喷嘴中分别形成的两个腔体中的材料输送管确保，彼此相对，第一与用于塑料材料的入口的通道连通， 通过喷嘴的喷射孔，该传送管通过设置在其侧表面上的两个相应的球形扇区与两个空腔的侧壁紧密接触。

公开(公告)号：US4196855A

公开(公告)日：1980-04-08

申请号：US920262

申请日：1978-06-29

申请人： Jesus M. Osuna-Diaz

发明人： Jesus M. Osuna-Diaz

IPC分类号： B29C37/00 ,  B29C41/00 ,  B29C45/00 ,  B29C45/20 ,  B29C45/26 ,  B29C45/73 ,  B29C45/74 ,  B29F1/03

CPC分类号： B29C45/74 ,  B29C45/20

摘要： A machine nozzle attached to the barrel of an injection molding machine. The nozzle comprises a body having a central passage and surrounded by a coiled electric heater extending substantially the full length of the body. A cover surrounds the heater, and a removable retainer is attached to the end of the body, so that the heater may be easily removed and replaced. The new construction eliminates problems inherent in previous machine nozzles and is capable of accurate temperature control so as to improve molding quality.

摘要翻译： 连接到注射成型机的筒的机器喷嘴。 喷嘴包括具有中心通道并且基本上延伸到主体的整个长度的螺旋电加热器围绕的主体。 盖子围绕加热器，并且可拆卸的保持器附接到主体的端部，使得加热器可以容易地移除和更换。 新的结构消除了以前机器喷嘴固有的问题，并且能够精确地进行温度控制，以提高成型质量。

公开(公告)号：US4124308A

公开(公告)日：1978-11-07

申请号：US808704

申请日：1977-06-21

申请人： Nickolas N. Sokolow

发明人： Nickolas N. Sokolow

IPC分类号： B29C44/04 ,  B29C45/00 ,  B29C45/16 ,  B29B1/10 ,  B29F1/03

CPC分类号： B29C44/0492 ,  B29C45/1642 ,  B29C45/00 ,  Y10S264/83

摘要： A single screw injection device or extruder sequentially injects skin and foamed plastics melts into a mold to produce structural skin covered foam molded parts free from swirl marks. A single extrusion screw or plasticator selectively feeds, compresses and meters a plastics melt to a first injector for skin melt injection or to a gas injection well where it meters gas flow into the melt, mixes the gas and melt to form a foam and feeds the foam to a second injector for foam melt injection into the mold. A valve controls the flow of the plastics melt and the foamed plastics melt to a single injection nozzle for discharge into the mold. In sandwich molding, a small amount of the unfoamed melt is first injected to form the skin for the molded article and then the valve is shifted to connect the nozzle with the foamed melt from the screw whereupon the injector forces the foamed melt through the nozzle into the mold to overlie the skin melt. The skin melt and the foamed melt are fed through the same nozzle and swirling in the mold is avoided.

摘要翻译： 单螺杆注射装置或挤出机依次将皮肤和发泡塑料熔体注入模具中以产生不含涡流痕迹的结构性皮肤覆盖的泡沫模制部件。 单个挤出螺杆或塑化器选择性地将塑料熔体进料，压缩和计量到用于皮肤熔融注射的第一注射器或气体注入井，其中气体流入熔体，将气体和熔体混合以形成泡沫并将 泡沫到泡沫熔体注入模具的第二个注射器。 阀门将塑料熔体和发泡塑料熔体的流动控制到单个注射喷嘴，以便排出到模具中。 在夹层成型中，首先注入少量未发泡的熔体以形成模制品的皮肤，然后将阀移动以将喷嘴与来自螺杆的泡沫熔体相连接，由此喷射器迫使泡沫熔体通过喷嘴进入 模具覆盖皮肤融化。 皮肤熔化和发泡的熔体通过相同的喷嘴进给，并避免在模具中旋转。