| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 425562000 | With means between charger and mold to cut off flow of fluent stock (e.g., needle valve, baffle, etc.) | 59 |
| 20080241311 | STRINGING PREVENTING MEMBER AND INJECTION MOLDING APPARATUS - A stringing preventing member is provided and includes: a member having an opening portion through which resin injected from an injection nozzle of an injection molding apparatus is fed to a mold including a fixed mold and a movable mold; and a projection portion protruding inwardly with respect to an opening of the injection nozzle, so as to define at least a part of a contour of the opening portion. A ratio of an effective opening area of the opening portion to a surface area of an inner wall surface of the opening portion contacting with the resin at an inside of the opening potion is 0.6 or less, and a ratio of the effective opening area of the opening portion to an area of the opening of the injection nozzle is 0.6 or more. | 10-02-2008 |
| 20090117222 | PRECISE CONTROL NON-RETURN VALVE - An improved precise control non-return valve assembly which is mounted on the front end of a helical rotating plasticating screw of an injection molding machine or the like that is surrounded by a heated elongated barrel and end-cap that forms a distribution chamber, whose purpose is to allow means for passage of molten plastic fluid in the downstream direction while preventing it in the opposite direction. The valve having an outwardly extended portion of a shaft and has a means to accept a ring that is sandwiched between a bushing assembly and a rear seating area. The bushing assembly consists of at least two bushings and one pin whose dual purpose is to govern the forward movement of the ring and to absorb the force that is being applied to it. The non-return valve assembly when moved forward with the screw, forms a seal, builds pressure, and displaces molten plastic fluid from the distribution chamber through a discharge chamber passageway and into a mold. | 05-07-2009 |
| 20100040724 | INJECTION MOLDING METAL MOLD AND SHAPED ARTICLE - An injection-molding die including: a fixed die; a movable die; a cavity defined by the fixed die and the movable die; and a gate for injecting a melt resin into the cavity. The cavity includes: a flow-dividing structure that divides a flow of the melt resin injected into the cavity into a plurality of resin flows; and a flow-advancing area in which the resin flows generated by the flow-dividing structure are merged together. The flow-advancing area is formed thicker than a flow-hesitating area of the flow-advancing area in the cavity. | 02-18-2010 |
| 20100040725 | PLUGGING ROD - An injection nozzle plugging rod ( | 02-18-2010 |
| 20100086636 | POLYMER PROCESSING SYSTEMS INCLUDING SCREWS - Injection molding and blow molding systems that include screws having low L:D ratios are provided. The systems are capable of producing microcellular polymeric materials. In some cases, the systems may be formed by retrofitting conventional polymer processing systems. Retrofitting may involve changing (e.g., machining or replacing) existing components of the conventional system, as well as, adding new components to the system. For example, retrofitting generally involves replacing the conventional polymer processing screw with a new screw designed to satisfy conditions needed for processing microcellular materials. In other cases, the systems may be newly manufactured. The retrofitted or newly manufactured systems of the invention are considerably less expensive than newly manufactured microcellular processing systems having higher L:D ratios. | 04-08-2010 |
| 20100151074 | Plastification and injection unit with back-flow barrier - A plastification and injection unit in injection-molding machines for processing of polymer materials, for example rubber, has a plastification screw that is disposed so as to rotate in a screw cylinder, which simultaneously represents the injection piston. The screw cylinder is disposed in an injection cylinder, in an axially displaceable manner. The injection cylinder can be connected with the sprue channel of an injection-molding die by way of a nozzle, and the injection piston has a back-flow barrier. The screw is axially displaceable in the screw cylinder by means of a separate drive. The screw tip projects out of the screw cylinder and has a closure body having a sealing surface for contact with the face surface of the screw cylinder. | 06-17-2010 |
| 20100166908 | CROSS-OVER NOZZLE SYSTEM FOR STACK MOLDS - A crossover nozzle system for transferring molten plastic from an inlet at the center of the stationary platen of an injection machine to the main manifold of the molding chambers of the stack molds of the injection molding machine. The crossover nozzle system relies on molten plastic pressure within the system to actuate the primary sprue shut-off valve, and thus to open and close the flow of molten plastic to the molds. Therefore, a drool-free valve mechanism is created without needing an external actuation of the shut-off valve like, for instance, a hydraulic or a pneumatic cylinder. | 07-01-2010 |
| 20100215795 | Multiple-Gate Injection Molding Apparatus - One or more nozzles define separate nozzle channels. The nozzles are coupled to a manifold, so that each of the nozzle channels communicates with a different mold gate. A molding material distribution insert is coupled to the manifold and has a body defining a distribution channel and a plurality of drop channels equal in number to the nozzle channels. The distribution channel is an open distribution channel formed on an outer surface of the body and enclosed by the manifold. The drop channels intersect the distribution channel and exit the body at a different one of the nozzle channels. A valve pin bushing can extend into the drop channels. Valve pins can extend from actuators, through the valve pin bushing and the drop channels, and to the mold gates. A valve pin holder can be coupled to the actuator and coupled to heads of the valve pins. | 08-26-2010 |
| 20100255144 | Forming method using pressing and injection-molding multifunction die, forming apparatus provided with pressing and injection-molding multifunction die , and metal-resin molded product formed by the method or the apparatus - A forming method using a pressing and injection-molding multifunction die for forming a metal-resin molded product by integrating metal with resin, includes: forming a resin-molded portion on the metal; and performing, after the resin-molded portion is formed on the metal, at least one of a pressing process and an injection-molding process on the metal in the state in which the metal-resin molded product is supported by only the resin. | 10-07-2010 |
| 20100285170 | COUPLING APPARATUS AND METHOD - An injection molding system comprising an actuator, a mounting plate, a mold and a manifold mounted between the mounting plate and the mold, the mounting plate being removably coupled to the mold, the actuator comprising an actuating member reciprocally drivable along an axial path of travel and a housing removably coupled to the mounting plate; a valve pin coupled to the shaft of the actuator for movement of the valve pin together with movement of the actuating member, the valve pin comprising a pin stem and a pin connector; the actuator having an actuator coupling adapted to reversibly couple to and decouple from the pin connector in a radial direction relative to the axial path of travel, the pin stem extending from the actuator into the manifold when the housing of the actuator is coupled to the mounting plate and the pin connector is received within the actuator coupling; the actuator housing being mounted on or within the mounting plate for radial movement upon decoupling of the actuator housing from the mounting plate such that the pin connector is decouplable from the actuator coupling upon said radial movement while the actuator housing is disposed on or within the mounting plate, the actuator being removable from on or within the mounting plate leaving the valve stem behind extending into the manifold. | 11-11-2010 |
| 20110171341 | Plastic Injection Mold - A plastic injection mold for molding a plastic article includes an upper insert and a lower insert. The upper insert and the lower insert match with each other to define an annular mold cavity therebetween. An annular gate communicates with the mold cavity for allowing molten plastic material to flow into the mold cavity to mold the article. An annular runner is connected with the annular gate for injecting molten plastic material to the annular gate. Molten plastic material will evenly flow into the mold cavity of the plastic injection mold through the annular gate to mold the plastic article, which prevents the plastic article from being disfigured, decreasing the defective products and improving the product quality. | 07-14-2011 |
| 20110229597 | IMPROVED CHECK VALVE - A check valve ( | 09-22-2011 |
| 20120070531 | Injection Molding Apparatus Having A Valve Pin Bushing - An injection molding apparatus, such as a hot runner or hot half, includes a manifold having a manifold channel and a nozzle having a nozzle channel. The nozzle is coupled to the manifold, and the manifold channel and the nozzle channel are in communication to define a flow channel. A valve pin bushing has a flow restrictor disposed in the flow channel on an upstream side of the valve pin bushing. A moveable valve pin extends through a bore of the valve pin bushing. | 03-22-2012 |
| 20120156323 | Hot-Runner System Including Melt-Flow Control Structure Integrally Formed with the Manifold Body - A hot-runner system is provided with a manifold body including a manifold melt channel, and a melt-flow control structure communicating with the manifold melt channel. The melt-flow control structure is integrally formed with the manifold body. | 06-21-2012 |
| 20120231111 | Valve Pin for Accommodating Side Loading - A valve pin that accommodates side loading for use in a valve-gated nozzle of a hot runner injection molding system is disclosed. The valve pin is operably coupled at a rearward end to an actuating mechanism and includes a shaft that extends through the system such that a forward end thereof engages with a mold gate of a mold cavity. The valve pin shaft has a region forward of the rearward end thereof that accommodates side loading under operating conditions. The region may be a slidable or rotatable interface configured to provide lateral or angular movement between upstream and downstream portions of the valve pin shaft under side loading conditions or may be configured to provide increased flexibility to the valve pin shaft within the region to permit deflection of the valve pin under side loading conditions. | 09-13-2012 |
| 20130022704 | Mold-Tool Assembly Including Resin-Retaining Device Located Relative To Stem-Tip Portion - A mold-tool assembly ( | 01-24-2013 |
| 20130251843 | VALVE GATE SYSTEM - A valve gate assembly comprises a piston that is actuable between a forward position and a rear position and has a piston stop surface and a forward pressure surface. A cylinder has a cylinder stop surface that is disposed to contact the piston stop surface when the piston is in the forward position. The cylinder stop surface is radially outward of at least a portion of the forward pressure surface and a shutoff pin is substantially aligned with the axis. | 09-26-2013 |
| 20130287886 | Injection-Moulding Machine - An injection-moulding machine comprising a hot runner, arranged in a manifold, for feeding a melt into a mould, a shut-off needle for optionally closing or opening the hot runner, a piston connected to the needle, is arranged in a housing with an opening and to which a fluid can be applied from both sides, and a covering plate having two fluid feeds, into the opening wherein the covering plate, the hot runner manifold and the housing are arranged in such a way that, at a first temperature of the manifold, a distance remains between the housing and the covering plate and, at a second higher temperature the thermal expansion of the manifold and/or housing causes the housing to come into contact with the covering plate, closing the opening. In a further embodiment, a flexible seal is provided between the housing and the covering plate. | 10-31-2013 |
| 20130287887 | Valve-Stem Assembly Removable from Runner System While Valve-Actuator Assembly Remains Connected with Manifold Assembly - A mold-tool system ( | 10-31-2013 |
| 425563000 | Biased, pressure responsive means | 5 |
| 20090017152 | METHOD FOR CONTROLLING MEASUREMENT IN INJECTION MOLDING MACHINE, AND INJECTION MOLDING MACHINE - A method for controlling measurement in a motor-driven in-line screw type injection molding machine using servo-motors as a measurement driving source and an injection driving source. Control is made so that all of a measured value of back pressure controlled by the measurement servo-motor, a measured value of an astern speed of a screw controlled by the injection servo-motor, and a measured rotational speed of the screw turn zero concurrently at timing when the screw reaches a measurement completion position. Thus, suck-back can be made dispensable. | 01-15-2009 |
| 20090028986 | INJECTION MOLDING FLOW CONTROL APPARATUS AND METHOD - Apparatus for controlling the rate of flow of fluid material through an injection molding flow channel leading to a mold cavity, the apparatus comprising:
| 01-29-2009 |
| 20100209547 | Valve Pin Bushing Assembly For An Injection Molding Apparatus - A valve pin bushing assembly for an injection molding apparatus. The assembly includes a bushing body for connection to a manifold, a flexible barrier having a first end that is continuously connected to the bushing body, and a valve pin continuously connected to a second end of the flexible barrier. The valve pin extends through a nozzle in a downstream direction towards a mold gate, wherein the valve pin is movable in an upstream direction and in the downstream direction for opening and closing the mold gate. The flexible barrier seals a channel of molding material from an outside space. | 08-19-2010 |
| 20100233311 | Injection Molding Apparatus - An actuator is disposed between a back plate and a manifold and is connected to a valve pin. A nozzle flange, locating ring, or pressure disc can transmit a first load between the manifold and a mold plate. A pressure disc can be disposed between the actuator and the back plate. The pressure disc transmits a second load between the back plate and the manifold through the actuator. | 09-16-2010 |
| 20130243901 | Edge-Gated Injection Molding Apparatus - An edge-gated injection molding apparatus is disclosed having an injection manifold assembly for distributing a melt stream of moldable material to a plurality of mold cavities aligned on opposing sides of the injection manifold assembly. The injection manifold assembly includes a plurality of melt outlets with each melt outlet being in fluid communication with a respective mold cavity, and a plurality of biasing components disposed along a centerline of the injection manifold assembly. A nozzle seal is disposed between each injection manifold assembly melt outlet and its corresponding mold cavity, with an upstream end of the nozzle seal being slidably disposed against its respective melt outlet. Each biasing component is disposed between a pair of melt outlets and corresponding nozzle seals for biasing the melt outlets and nozzle seals outward from the centerline of the injection manifold assembly toward their respective mold cavities and applying a preload thereto. | 09-19-2013 |
| 425564000 | Nozzle valve | 35 |
| 20080226765 | Injection System - Injection system with closing rod ( | 09-18-2008 |
| 20080248153 | VALVE DEVICE OF INJECTION MOLDING DEVICE - A valve device is configured for obturating an opening of a channel defined in an injection molding device. The valve device includes a plug movably received in the channel, and a resilient member connected with the plug. The plug includes an obturating portion for obturating the opening of the channel. The resilient member is configured for driving the plug to its original position where the obturating portion obturates the opening, after the opening of the channel is opened. | 10-09-2008 |
| 20090028987 | Sliding Valve for an Injection Nozzle - A shut-off valve assembly for an injection unit is provided. It includes a first valve body, defining a portion of a channel, and a second valve body, defining a second portion of the channel, the second valve body being slidable relative to the first valve body. A plunger having an orifice therethrough, is located between the first valve body and the second valve body, and is selectively movable between an open position where the orifice is aligned with the channel and a closed position where the orifice is misaligned with the channel. Compressing the first valve body and the second valve body together while the plunger is in the open position creates a positive face seal around the orifice, thereby reducing leakage in the shut-off valve assembly. | 01-29-2009 |
| 20090028988 | Injection-Moulding Apparatus with Needle Valve Nozzle - An injection molding apparatus ( | 01-29-2009 |
| 20090041886 | Cross-Over Nozzle System for Stack Molds - A crossover nozzle system for transferring molten plastic from an inlet at the center of the stationary platen of an injection machine to the main manifold of the molding chambers of the stack molds of the injection molding machine. The crossover nozzle system relies on molten plastic pressure within the system to actuate the primary sprue shut-off valve, and thus to open and close the flow of molten plastic to the molds. Therefore, a drool-free valve mechanism is created without needing an external actuation of the shut-off valve like, for instance, a hydraulic or a pneumatic cylinder. | 02-12-2009 |
| 20090061042 | Injection Molding Apparatus Having a Valve Pin Bushing - An injection molding apparatus, such as a hot runner or hot half, includes a manifold having a manifold channel and a nozzle having a nozzle channel. The nozzle is coupled to the manifold, and the manifold channel and the nozzle channel are in communication to define a flow channel. A valve pin bushing has a flow restrictor disposed in the flow channel on an upstream side of the valve pin bushing. A moveable valve pin extends through a bore of the valve pin bushing. | 03-05-2009 |
| 20090142440 | Multi-Piece Valve Pin Bushing - A bushing body has an upstream portion and a downstream portion for extending into a channel. The bushing body has a bore therethrough for receiving a valve pin. A contoured sleeve is fit around the downstream portion of the bushing body for guiding a flow of molding material. A cap piece is coupled to the upstream portion of the bushing body for contacting a back plate. | 06-04-2009 |
| 20090148551 | Injection Molding Apparatus With Plate Actuation of Valve Pins - An injection molding apparatus includes a back plate, a driven pulley connected to the back plate and rotatable with respect to the back plate, a screw connected to the driven pulley to rotate with the driven pulley, a motor having an attached drive pulley, a belt or chain coupling the driven pulley and the drive pulley, a valve pin plate, a nut connected to the valve pin plate and mated with the screw, at least one valve pin connected to the valve pin plate, a manifold fixed with respect to the back plate, and at least one nozzle connected to the manifold. The valve pin extends through the nozzle to control flow of molding material. The screw can be a ball screw and nut can be a ball nut. The screw can have one portion connected to the driven pulley and another portion connected to a mold plate in a rotatable manner. The valve pin plate may be an assembly with an upper plate, a lower plate, and at least one valve pin holder fixed between the upper plate and the lower plate, the valve pin being fastened to the valve pin plate assembly with the valve pin holder. The positions of the screw and nut can be reversed. | 06-11-2009 |
| 20090220636 | Actuating Device for Shut-Off Needles in Injection Molding Machines Having Needle Valve Nozzles - The invention relates to an actuating device ( | 09-03-2009 |
| 20090311364 | Injection Molding Anti-Drool Nozzle - A shutoff nozzle body and valve assembly operative to reduce molten plastic resin drool when the nozzle body is separated from the mold or runner system. The apparatus includes a porting system that shuts off the flow of resin through the sprue plunger of the valve nozzle body before the valve body seals on the valve seat so as to permit any resin that is within the sprue passages to drain out through the sprue plunger into the mold cavity or runner system before the sprue tip completely withdraws from the mold or runner system thereby eliminating drool. | 12-17-2009 |
| 20100015275 | INJECTION-MOLDING NOZZLE - The invention relates to an injection-molding equipment nozzle ( | 01-21-2010 |
| 20100047383 | Injection Molding Apparatus Having A Nozzle Tip Component For Taking A Nozzle Out-of-Service - An injection molding apparatus includes a plurality of valve-gated nozzles, each nozzle having a respective valve pin that is actuated by an actuator. A nozzle tip component for taking one of the valve-gated nozzles of the injection molding apparatus out-of service, wherein the nozzle tip component has a surface that grips the respective valve pin to lock the valve pin in an out-of-service position thereby preventing flow of molding material into an associated mold cavity and causing disengagement of the valve pin from the actuator. | 02-25-2010 |
| 20100062100 | Nozzle Shutoff for an Injection Molding Machine - The present invention is directed to an injection molding valve configured to prevent the leaking or stringing of injected thermoplastic from the valve. The valve includes a housing having a first bore along a length thereof and a second bore intersecting the first bore. A rotatable member is inserted through the second bore and is in communication with a lever for the actuation thereof. The rotatable member includes a hole therethrough such that when the hole is aligned with the first bore, thermoplastic may travel freely through the first bore. The second bore further includes at least one groove in communication with a port for receiving injected thermoplastic. The injected thermoplastic is hardened to form an seal therein and configured to prevent thermoplastic from leaking out of the valve housing. | 03-11-2010 |
| 20110027410 | Back-Up Device for Use in a Melt Distribution Apparatus of an Injection Molding System - Disclosed, amongst other things, is a back-up device that is configured to provide a structural support, in use, between a manifold and a housing member within a melt distribution apparatus of an injection molding system. The back-up device is associated, in use, with a valve-gate apparatus within a nozzle drop. The back-up device includes a cold-side member formed from a first material and a hot-side member formed from a second material. The first material is more thermally conductive than the second material. The cold-side member is configured to be thermally connectable, in use, with the housing member and the hot-side member. The hot-side member is configured to be thermally connectable, in use, with the manifold and the cold-side member. The hot-side member is also configured to prevent the cold-side member from directly contacting the manifold. | 02-03-2011 |
| 20110129561 | Apparatus for Injection Molding - A nozzle assembly for selectably conveying material in a flowable condition to a cavity of a mold assembly comprises a nozzle body, a removable nozzle tip, a valve pin member extending through the nozzle body and having a tip end for selectably forming a seal with a valve seat to selectably prevent passage of material into the mold cavity and a pin guide for guiding the valve pin member, the pin guide being partially received within the nozzle tip and partially received within the nozzle body and having at least one alignment surface on the exterior thereof and cooperating with an aligning surface of the nozzle body to align the pin guide relative to the nozzle body and with an aligning surface of the nozzle tip to align the nozzle tip relative to the pin guide whereby the nozzle tip is aligned relative to the nozzle body. | 06-02-2011 |
| 20120100245 | MINIATURE AUTOMATIC SHUTOFF NOZZLE TIP - An improved automatic shutoff nozzle tip which is mounted on the downstream end of a nozzle body of an injection molding machine or the like who's purpose is to act as a passageway for molten plastic fluid allowing the fluid to flow in one direction when urged to open by the pressure created by the forward motion of the plasticizing screw of said molding machine and to close when said pressure is lower than the designed opening pressure. The nozzle, having an convex outwardly extended portion that mates up with a sprue bushing or mold having complimentary convex radii, said nozzle having a orifice on the distal end that mates with a complimentary orifice of said sprue bushing. A nozzle that has a means for attachment to a nozzle body or the like with a rear seat, poppet and spring or similar device who's poppet is normally in the closed position until pressure is applied urging the poppet to move in the downstream direction and providing for a passageway for molten plastic fluid. | 04-26-2012 |
| 20120114785 | DEVICE FOR PRODUCING PLASTIC MOLDED PARTS AND THE USE THEREOF - A device for producing plastic moldings has an extruder and a molding tool arranged downstream of an extruder discharge opening. A screw is rotatably guided in the extruder and is axially displaceable to transfer liquid polymers, prepolymers or monomers present in the extruder into the molding tool. A nonreturn valve adjacent to a free end of the screw has a locking ring in contact with the inner circumferential wall of the extruder that includes a seal, which is applied to at least part of its outer circumference and which seals the locking ring against the circumferential wall of the extruder. The sealing material of the seal is selected from the group of the polymers, copolymers and polymer blends with a hardness lower than that of the circumferential wall of the extruder. A nonreturn valve and method of processing liquid prepolymers or monomers into plastic moldings is provided. | 05-10-2012 |
| 20120177775 | TORPEDOES - In one aspect of the present teachings, a torpedo includes a body and a needle pin. The body may have a plurality of blades formed on an outer circumferential surface of the body. The needle pin is received within the body and is axially movable to extend from and retract into a front portion of the body. The plurality of blades may be arranged to ensure a gap between the outer circumferential surface of the body and an inner circumferential wall of an internal space of a nozzle case for receiving a supply of a molten material when the body is received within the internal space. The blades may be formed separately each other. | 07-12-2012 |
| 20120225160 | VALVE PIN AND ACTUATOR ASSEMBLY FOR INJECTION MOLDING - A actuator assembly for a runnerless injection molding system. The actuator assembly is disposed in injection mold top clamp plate and incorporates a hollow actuator shaft whereby the valve pin passes trough the hollow actuator shaft and is firmly attached to the hollow actuator shaft providing easy access to the valve pin for maintenance. The top clamp plate incorporates openings providing access to actuator assembly. Actuator assembly incorporates a mechanism for attaching valve pin to hollow actuator shaft. The hollow actuator shaft can be activated, hydraulically, pneumatically or electrically in a linear movement providing a gate shut off valve. | 09-06-2012 |
| 20120263822 | CHECK VALVE - A check valve for a screw is provided. The check valve includes a retainer tip, operable to be attached to a distal end of a screw shaft, the retainer tip defining at least one melt channel. A first ring is coaxially mounted to and rotationally-coupled with the retainer tip. A second ring is coaxially and slidably mounted to the retainer tip, and is operable to rotate relative to the retainer tip. The second ring is operable to reversibly move between an open position which permits melt to flow through the check valve and a closed position which prevents backflow of the melt. | 10-18-2012 |
| 20130129856 | CLOSURE ASSEMBLY, WITH A MULTI-ROD DRIVE, FOR THE INJECTION MOULDING OF PLASTIC MATERIAL - A closure assembly, of the type with a multi-rod drive, for the injection moulding of plastic material is described. The closure assembly has a plurality of closing rods and a driving plate, wherein the driving plate is adapted to move between an open position and a closed position. The closure assembly also has disconnecting and fixing means associated with each closing rod for disconnecting it from the driving plate, independently from the other closing rods, and to firmly fix it, once disconnected, on a side of the mould. | 05-23-2013 |
| 20130302467 | HOT RUNNER VALVE APPARATUS FOR AN INJECTION-MOLDING MACHINE - The present invention relates to a hot runner valve apparatus for an injection-molding machine, which has, instead of a complicated mechanical opening/closing structure, a simple structure that enables an elevating pin, through the interior of which a resin flows, to be elevated, to easily control a supply of the resin injected into a cavity of a mold, so that the molding condition for a small precise part component, or in the event a resin having poor flowability is used, is improved, thereby increasing mass-production capabilities and reducing defects in molded articles. | 11-14-2013 |
| 20140037781 | APPARATUS FOR INJECTION-MOULDING OF PLASTIC MATERIALS - Apparatus for injection-moulding of plastic materials comprising a hot runner ( | 02-06-2014 |
| 20140099398 | VALVE GATE CYLINDER AND HOUSING WITH MICROGAP SEAL - An injection molding arrangement including a mold top clamp plate having a means for receiving a plasticizer unit, a manifold retainer plate supporting a melt distribution manifold having a melt distribution channel into which melt from the plasticizer unit is received, a mold cavity plate provided such that the manifold retainer plate is positioned between the mold top clamp plate and the mold cavity plate; the mold cavity plate receiving an injection nozzle in fluid communication with the melt distribution channel for receiving melt to be injected into a mold, a valve gate stem extending into the injection nozzle and axially movable between an open position permitting melt flow and a closed position blocking melt flow, and an actuator for moving the valve gate stem between the open position and the closed position. The actuator includes a cylinder chamber receiving a piston therein, with the valve gate stem coupled to the piston. The piston has an elongate cylindrical sidewall. The cylinder chamber and the piston are sized and otherwise dimensioned to provide a microgap seal along the uninterrupted elongate cylindrical sidewall between an upper chamber of the cylinder chamber and a lower chamber of the cylinder chamber. | 04-10-2014 |
| 20140178525 | Stack Mold Transfer Device - Stack mold transfer device are disclosed that include first and second transfer members having respective first and second transfer channels, first and second valve seats, and first and second valve members. The first valve member defining a flow portion and a first sealing surface and the second valve member defining a second sealing surface and a receiving pocket. When the first and second transfer members are in an engaged configuration, the first and second transfer channels form a common transfer channel. When the transfer device is in a closed-flow configuration, the flow of molding material is blocked, and when the transfer device is in an open-flow configuration, the first sealing surface of the first valve member is slidably received in the receiving pocket of the second valve member and the flow portion of the first valve member is positioned to allow molding material flow within the common transfer channel. | 06-26-2014 |
| 20150079222 | Edge-Gated Injection Molding Apparatus - An edge-gated injection molding apparatus is disclosed having an injection manifold assembly for distributing a melt stream of moldable material to a plurality of mold cavities aligned on opposing sides of the injection manifold assembly. The injection manifold assembly includes a plurality of melt outlets with each melt outlet being in fluid communication with a respective mold cavity, and a plurality of biasing components disposed along a centerline of the injection manifold assembly. A nozzle seal is disposed between each injection manifold assembly melt outlet and its corresponding mold cavity, with an upstream end of the nozzle seal being slidably disposed against its respective melt outlet. Each biasing component is disposed between a pair of melt outlets and corresponding nozzle seals for biasing the melt outlets and nozzle seals outward from the centerline of the injection manifold assembly toward their respective mold cavities and applying a preload thereto. | 03-19-2015 |
| 20150110918 | Multi-Property Injection Molding Nozzle - Injection-molding nozzles having any one or more of improved heat transfer, wear resistance, and melt transfer from a manifold to a mold. The operation and durability of a nozzle can be improved by integrally layering multiple materials to create a multi-property nozzle that is a unitary, monolithic, and seamless structure. For example, the heat transfer properties of a nozzle is improved by integrally layering certain materials in the nozzle housing such that heat is more effectively dissipated or transferred throughout the nozzle to maintain and promote melt flow. One or more components of the nozzle can be merged and thus seamlessly formed to improve melt flow by reducing joints that would cause the melt to hang up within the nozzle and, concomitantly, reducing manufacturing and assembly time. The process used to unitarily form some or all of the nozzle may also be used to create complex geometric configurations therein. | 04-23-2015 |
| 20160082634 | VALVE PIN POSITION ADJUSTER - An apparatus and method for adjusting the axial position of a valve pin in an injection molding system, the apparatus comprising:
| 03-24-2016 |
| 20160107352 | APPARATUS FOR INJECTION MOLDING OF PLASTIC MATERIAL - An apparatus for injection molding of plastic materials includes an injection machine platen, a mold including a backing plate for securing the mold to the injection machine platen, a distributor of the plastic material to be injected adjacent to the backing plate and bearing at least one injector including a nozzle within which a pin valve is axially movable, and a respective electric actuator with associated transmission to operate the displacement of the pin valve between a closed position and an open position. The transmission includes a variable-length connecting rod. | 04-21-2016 |
| 425565000 | Mold actuated | 5 |
| 20080279979 | Injection Molding Nozzle With Valve Pin Alignment - An injection molding apparatus is disclosed that includes a valve-gated nozzle having a nozzle tip assembly and a valve pin slidably disposed therein. The nozzle tip assembly includes a nozzle liner having a first valve pin guiding portion, a valve pin guide having a second valve pin guiding portion upstream of the first valve pin guiding portion, and a transfer seal having a bore for receiving the nozzle liner and the valve pin guide therein. The transfer seal bore includes an alignment surface that surrounds the nozzle liner and the valve pin guide to align the first and second valve pin guiding portions with the mold gate, such that the valve pin is accurately aligned during operation. The transfer seal also includes means to couple the nozzle tip assembly to the nozzle body. | 11-13-2008 |
| 20090017153 | Rotary Valve Assembly for an Injection Nozzle - A rotary valve assembly for an injection unit is provided, having a valve body, defining a melt channel for a working fluid. At least one end cap is mounted to the valve body, the valve body and the at least one end cap cooperatively defining a valve seat intersecting the melt channel in a generally traverse direction, the valve seat having a wider portion and a narrower portion. A spool defines an orifice, the spool being rotatably mounted within the valve seat, and is movable between an open position where the orifice is aligned with the melt channel and a closed position where the orifice is misaligned with the melt channel. | 01-15-2009 |
| 20090017154 | Actuating Device for Shut-Off Needles in Injection Moulding Devices Comprising Needle Shut-Off Nozzles - A drive system ( | 01-15-2009 |
| 20090142441 | Dough Stream Blocker - A dough stream blocker ( | 06-04-2009 |
| 20110033572 | Hot Runner System having Active Material - According to an aspect, there is disclosed a hot runner system ( | 02-10-2011 |
| 425566000 | Flush with or entering mold cavity | 1 |
| 20090181120 | Injection Molding Apparatus Having Movable Yoke Plate - A coinjection molding apparatus includes a manifold, a nozzle body coupled to the manifold, a sleeve disposed within the nozzle body and defining an outer melt channel between the sleeve and the nozzle body, a pin disposed within the sleeve and defining an inner melt channel between the pin and the sleeve, and a nozzle tip having an alignment portion contacting the sleeve. The sleeve is actuated to open and close melt communication of the outer melt channel and a cavity gate. The pin is actuated to open and close melt communication of the inner melt channel and an opening of the sleeve. The alignment portion aligns the sleeve with the cavity gate along the actuated range of the sleeve. | 07-16-2009 |
