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| Number | Title | Issue Date |
| 8152513 | 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 distr... | 04/10/2012 |
| 8128397 | 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 incor... | 03/06/2012 |
| 8113818 | 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... | 02/14/2012 |
| 8113819 | 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, wi... | 02/14/2012 |
| 8100689 | Safety connector for hot runner, having latch releasably interlocking valve stem with actuation plate Disclosed is a safety connector for a hot runner having a valve stem and an actuation plate, the safety connector including: (i) a latch releasably interlocking the valve stem with the actuation plate so that in response to movement of the actuation plate, the valve... | 01/24/2012 |
| 8070478 | Mould with an integrated injector The present invention relates to a mould, in which a completely closed cavity can be formed in one operating state, comprising an injector (10) which is at least partially accommodated in the mould (14) and the discharge opening of which opens into the... | 12/06/2011 |
| 8047836 | Nozzle valve gate apparatus with wiper seal A nozzle valve gate for injecting hot plastics into an injection mold includes a body having a passage for flow of the plastics to an outlet and forming an actuator chamber. A nozzle part is connected to the body and extends longitudinally to a nozzle tip having an ... | 11/01/2011 |
| 8007272 | Shooting pot for feeding multiple nozzles A hot runner system including a shoot pot system for transferring melt from a single shooting pot to multiple nozzles. Melt is fed from a source of melt into the cavity through the multiple nozzles, and a valve isolates melt in the cavity from melt in the source. A ... | 08/30/2011 |
| 7997895 | Injection apparatus for injection molding of thermoplastic parts An injection apparatus for injecting hot plastics material into an injection mold has an actuator section forming an actuator chamber and a nozzle member connected to the actuator section and extending to a nozzle tip having an injection aperture. The nozzle member ... | 08/16/2011 |
| 7988445 | 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,... | 08/02/2011 |
| 7972132 | Injection molding valve gated hot runner nozzle A valve gated hot runner nozzle with at least two transition members made of different materials located between a nozzle tip and a mold gate component to provide a thermal transition region. A first transition member in contact with the nozzle tip is less thermally... | 07/05/2011 |
| 7955071 | 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... | 06/07/2011 |
| 7942664 | Injection nozzle plugging rod An injection nozzle plugging rod (4) of machines for molding plastic material containers, provided with a locking system suitable for preventing the separation of the parts forming the actuating pneumatic piston of the same rod, said piston being subjected to... | 05/17/2011 |
| 7942663 | Injection molding valve gate system and activating mechanism A valve gate system for an injection molding machine, having a valve gate unit configured to be in contact with a manifold of an injection molding machine for delivering a molten plastic flow from a hot runner system to an injection chamber. The valve gate unit has ... | 05/17/2011 |
| 7909599 | Injection nozzle for guiding hot-melt plastic within a mold Among other things, the invention relates to an injection nozzle for guiding hot-melt plastic within a mold, particularly an injection mold. Said injection nozzle comprises a nozzle housing (11) and a nozzle needle (13) which is mounted in a translatio... | 03/22/2011 |
| 7883333 | Valve gate A valve gate of an injection valve includes a center pin whose end portion is exposed to a cavity, a valve main body accommodating the center pin, a valve tip surrounding an outer circumferential portion of the end portion of the center pin and fixed at an inner cir... | 02/08/2011 |
| 7866974 | Melt distribution apparatus for use in a hot runner Disclosed, amongst other things, is a melt distribution apparatus of a hot runner and a related method for balancing melt flow to a plurality of drops. The melt distribution apparatus includes a plurality of chokes with each choke of the plurality of chokes being as... | 01/11/2011 |
| 7866975 | Operating device for shut-off needles in injection-moulding devices with needle valve nozzles An operating device (10) for shut-off needles in injection moulding tools with needle valve nozzles has a displaceable element (20) to which at least two shut-off needles (16) can be fastened and which can be moved between two guide rails (30... | 01/11/2011 |
| 7862329 | Easily removable valve pin bushing The invention provides a replaceable bushing in the base of a nozzle of a hot runner assembly and provides access through a manifold and a rear plate for removal and replacement of the bushing without having to disassemble the hot runner assembly. According to one e... | 01/04/2011 |
| 7854605 | Injection moulding device comprising needle valve nozzles in a back-to-back arrangement The present invention relates to injection molding apparatus (10) comprising a main manifold plate (16) fitted with at least several flow ducts (18), further at least two auxiliary manifold plates (22) fitted with several flow ducts (2... | 12/21/2010 |
| 7850442 | Edge-gated nozzle An injection molding apparatus includes a manifold having a manifold melt channel for receiving a melt stream of moldable material under pressure and at least one nozzle having a nozzle melt channel in fluid communication with the manifold melt channel. The nozzle h... | 12/14/2010 |
| 7841855 | Injection molding nozzle A nozzle 10 used in injection molding comprises at least one runner 30 within a nozzle casing 20 to convey injection material to be processed. At its lower end, the runner 30 communicates, in flow-transmitting manner, through a nozzle ori... | 11/30/2010 |
| 7841856 | Injection system having a closing rod provided with a cleaning device Injection system with closing rod (2) provided with a cleaning device (6, 7, 8) suitable for removing the powder of molten plastic that builds up in the movement areas of the closing rod (2), in particular in the thrust bearing (3), durin... | 11/30/2010 |
| 7824176 | Needle valve nozzle A feature of a needle valve nozzle positioned in a hot-runner injection mould and actuated by means of an actuator, where the direction of actuation of the shut-off needle and that of the flow channel in the hot-runner nozzle differ from one another, is that, in the... | 11/02/2010 |
| 7819654 | Hot runner having reduced valve-stem drool Disclosed is a valve-gated hot-runner system, having: (i) a back-up sealing arrangement, including: (i) a plurality of radial gaps associated with a valve stem of a valve actuator, and (ii) a cooling system being positioned relative to the plurality of radial gaps, ... | 10/26/2010 |
| 7815431 | Actuating device for shut-off needles in injection molding devices comprising needle shut-off nozzles A drive system (10) for shutoff needles in injection molds fitted with needle shutoff nozzles comprises an elevation drive element (20) to which can be affixed at least two shutoff needles (16) of two needle shutoff nozzles, said elevation drive... | 10/19/2010 |
| RE41648 | Valve-gated injection molding system with side-mounted actuator In-line valve-gated nozzles for a single or multiple cavity applications wherein a valve-gated hot runner nozzle has a melt channel uniformly heated along the entire path. The valve pin is driven by an actuation device that is located adjacent to the nozzle to regul... | 09/07/2010 |
| 7775788 | Melt transfer components for a stack molding system A stack molding apparatus is disclosed having a stationary mold platen and a movable mold platen defining a parting line. The apparatus has a melt transfer nozzle extending within a well in the stationary mold platen, the melt transfer nozzle defining a melt channel... | 08/17/2010 |
| 7771190 | High pressure injection molding nozzle with low pressure manifold A hot runner system includes a having a cavity. Melt is fed from a source of melt into the cavity, and a valve isolates melt in the cavity from melt in the source. A plunger within the cavity is driven forward to inject melt in the cavity into a mold cavity at high ... | 08/10/2010 |
| 7766646 | 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 o... | 08/03/2010 |
| 7766647 | Open loop pressure control for injection molding An injection molding system is disclosed having a self-regulating valve for balancing melt flow. The self-regulating valve includes a control rod configured to balance the melt flow rate through a hot runner system. The self-regulating valve reacts to an injection o... | 08/03/2010 |
| 7753676 | 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 moldin... | 07/13/2010 |
| 7726965 | Nozzle gate opening and closing timing adjusting mechanism for multiple gate injection molding machine The object of the present invention is to provide a nozzle gate opening and closing timing adjusting mechanism used for multiple gate injection molding machine. And, a mechanism of the present invention is characterized that a nozzle gate opening and closing timing ... | 06/01/2010 |
| 7722351 | Injection molding apparatus having magnetic valve pin coupling A magnetic coupling for an injection molding apparatus, such as a hot half or hot runner, includes a first magnetic part for connection to an actuator, a valve pin plate, or the like and a movable second magnetic part for connection to a valve pin. The first magneti... | 05/25/2010 |
| 7717699 | Feed nozzle for injection-molding machine A nozzle is used with a mold formed with a rearwardly open recess having an apex at which opens a gate orifice. The nozzle has a body rearwardly closing the recess. The body is centered on an axis aligned with the orifice and formed with an axially extending central... | 05/18/2010 |
| RE41280 | Adjustable valve pin assembly The valve pin adjustment system is provided for use in valve gated injection molding applications which enables adjustments to the positioning of the valve pin without necessitating removal of the clamping plates and valve assembly components, including valve pins. ... | 04/27/2010 |
| 7699600 | Flexible plate slot for a hot runner injection molding system A flexible plate system for a hot runner assembly includes a backing plate; a manifold plate detachably connected to the backing plate; a manifold positioned between the backing plate and the manifold plate and having at least one nozzle associated therewith; and wh... | 04/20/2010 |
| 7658607 | 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 relie... | 02/09/2010 |
| 7658606 | Edge gated injection molding apparatus An injection molding apparatus includes an injection manifold having an inlet and a melt channel. The manifold melt channel branches to a plurality of melt channel outlets. A hot runner injection nozzle includes an axial melt channel extending along a central axis a... | 02/09/2010 |
| 7658605 | Edge gated injection molding apparatus An injection molding apparatus includes an injection manifold having a melt channel. A hot runner injection nozzle includes an axial melt channel extending along a central axis and communicating with the manifold melt channel. The nozzle further includes at least tw... | 02/09/2010 |
