Nozzle Valve Patents (Class 425/564)
  • Patent number: 11027468
    Abstract: A manifold device for an injection-molding nozzle for an injection-molding tool has a main manifold channel for an injection-molding compound, which main manifold channel extends from an inlet opening into the manifold device as far as at least two transfer openings, and at least two manifold channels for the injection-molding compound, which manifold channels each extend from a transfer opening to an outlet opening and are each fluidically connected by a transfer opening to the main manifold channel. Also disclosed are an injection-molding nozzle with such a manifold device and an injection-molding tool with such an injection-molding nozzle.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: June 8, 2021
    Inventors: Herbert Günther, Siegrid Sommer, Torsten Schnell
  • Patent number: 10982786
    Abstract: An injection molding apparatus including: a valve pin driven by an actuator, the valve pin extending axially through at least a portion of the channel length of the fluid flow channel, the fluid flow channel and the valve pin being configured or adapted such that the valve pin is movable axially upstream and downstream between an upstream position where the downstream flow of the injection fluid is restricted by a bulbous protrusion (B) of the pin being axially aligned (AL) with the throat (T) of the channel, an intermediate position where downstream flow of injection fluid is unrestricted (WG) and a fully downstream position where downstream flow of injection fluid is stopped at both the gate and at the throat.
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: April 20, 2021
    Assignee: Synventive Molding Solutions, Inc.
    Inventors: Vito Galati, Zhuang Rui Tan
  • Patent number: 10974426
    Abstract: An apparatus for injection molding of plastic materials includes a mold having at least one plate, a hot runner distributor of the fluid plastic material, at least one injector and an actuator for controlling the opening and the closing of the injector, supported by the distributor and whose cooling is carried out by thermal exchange contact with the plate. Provided for the cooling of the jack actuator is at least one body made of thermally conductive material at least partly surrounding the actuator in an axially slidable manner and it is maintained in thermal exchange contact with the plate by a magnetic force and/or a fluid thrust and/or an electrical drive force.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: April 13, 2021
    Assignee: INGLASS S.p.A.
    Inventors: Alessandro Dario, Massimo Rossi, Massimo Bisetto, Massimo De Nadai
  • Patent number: 10800082
    Abstract: An injection nozzle for an injection molding device comprising a nozzle head, an actuator, a drive train connected to the actuator, and at least one closure element. The drive train configured for moving the at least one closure element arranged in the nozzle head in a first direction. The drive train comprising a cam mechanism that comprises a cam head. The cam head comprising a cam head block. Per closure element, the cam head block comprising a bracket. The bracket comprising at least one inlay. Per closure element, the at least one inlay comprising a first drive surface configured for engaging and driving a second drive surface arranged at the closure element at least during closing of the closure element. Per closure element, the cam head block comprising a third drive surface configured f engaging and driving a fourth drive surface arranged at the closure element at least during opening of the closure element.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: October 13, 2020
    Assignee: OTTO MÄNNER GMBH
    Inventors: Swen Spuller, Marius Bär
  • Patent number: 10695964
    Abstract: The present disclosure is directed to an injection nozzle for an injection molding device comprising a drive train for at least one closure element arranged movable in a nozzle head in a first direction. The drive train comprises a cam mechanism with a cam head comprising a wedge and at least one side plate. The wedge and the side plate are together arranged moveable in a second direction. Per closure element the wedge comprises at least one first drive surface which interacts with a second drive surface arranged at the closure element at least during closing of the closure element. The at least one side plate comprises a third drive surface which interacts with a fourth drive surface arranged at the closure element at least during opening of the closure element.
    Type: Grant
    Filed: January 15, 2018
    Date of Patent: June 30, 2020
    Assignee: OTTO MÄNNER INNOVATION GMBH
    Inventors: Swen Spuller, Benedikt Stoll
  • Patent number: 10525719
    Abstract: A valve unit includes a flow path member having an opening surface that has a flow path opening of a liquid flow path, a valve having a sealing surface configured to seal the flow path opening, and a sealing member disposed on one of a peripheral portion of the flow path opening in the opening surface and a portion of the sealing surface facing the peripheral portion. The sealing surface is configured to be moved forward and backward relative to the opening surface to open and close the flow path opening. The sealing member is configured to be in contact with the peripheral portion of the flow path opening and the sealing surface when the valve is closed. The sealing member includes a fluorinated polyether.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: January 7, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Kei Tadachi, Satoshi Nagatoya, Hiroyuki Tsuchiya
  • Patent number: 10144792
    Abstract: A method for producing an electric wire or a molded article with improved abrasion resistance is described. The method uses a fluororesin via electron beam irradiation in air at a temperature where the fluororesin does not melt. A method for producing a resin material containing a modified fluororesin is also described.
    Type: Grant
    Filed: August 2, 2016
    Date of Patent: December 4, 2018
    Assignee: AGC Inc.
    Inventors: Masatoshi Abe, Tomoya Hosoda
  • Patent number: 10093054
    Abstract: Disclosed is an edge gating injection molding apparatus for delivering a moldable material to an array of mold cavities, the array can have a first column and a last column of mold cavities, the edge gating injection molding apparatus comprising: a unidirectional delivery body for delivering a first stream of the moldable material to a different one of each mold cavity of the first column and the last column of mold cavities, via a first location of the different one of each mold cavity of the first column and the last column of mold cavities; and a bidirectional delivery body for delivering a second stream of the moldable material to the different one of each mold cavity of the first column and the last column of mold cavities, via a second location of the different one of each mold cavity of the first column and the last column of mold cavities.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: October 9, 2018
    Assignee: MOLD-MASTERS (2007) LIMITED
    Inventors: Payman Tabassi, Kenneth Jacob
  • Patent number: 9944006
    Abstract: An apparatus and method for adjusting the axial position of a valve pin in an injection molding system, the apparatus comprising: an actuator comprising a housing having a chamber enclosing a drive member for driving a valve pin along an axial path of travel, the actuator housing slidably mounted and adapted for controlled upstream and downstream movement of the drive member along a path complementary to the axial path of travel of the valve pin, a mounting plate and an axial position adjustment screw screwably mounted within the mounting plate upstream of the housing of the actuator for controllably moving the valve pin to selectable starting or ending injection cycle axial positions.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: April 17, 2018
    Assignee: Synventive Molding Solutions, Inc.
    Inventor: Zhuang Rui Tan
  • Patent number: 9482650
    Abstract: Described are techniques for use with a sealing member forming a static seal or a dynamic seal at a surface thereof. The sealing member has at least the surface thereof formed from one of VESPEL® SCP 5000 material or VESPEL® SCP 50094 material.
    Type: Grant
    Filed: January 11, 2011
    Date of Patent: November 1, 2016
    Assignee: Waters Technologies Corporation
    Inventors: Marc E. Lemelin, Tony A. Lin, Mark W. Moeller, Stanislaw Koziol, James E. Usowicz
  • Patent number: 9421705
    Abstract: To improve the flow symmetry and the molding quality, it is presented a valve pin bushing for the hot runner of an injection mold, including two input channels, each having a geometric axis and through which the material to be injected can enter through an outlet into, and an output channel, which extends along a longitudinal axis up to an output from which the material can exit the valve pin bushing. The portions of the geometric axes, which extend at the outlet are arranged so that on any imaginary plane passing through the longitudinal axis there lies at most one portion.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: August 23, 2016
    Assignee: INGLASS S.P.A.
    Inventors: Massimo Rossi, Andrea Varaschin, Andrea Zanette
  • Patent number: 9346206
    Abstract: An injection molding apparatus of plastic material including a mold, a fixing plate of the mold, a distributor of the plastic material to be injected and a plurality of injectors connected to the distributor and each including a valve pin controlled by a respective rotary electric motor and a transmission. The fixing plate has a cavity facing the mold on a first face, within which the distributor is contained, and each electric motor with the relative transmission is housed, in a quickly insertable and removable manner, within a respective seat arranged on a second face of the fixing plate opposite to the first face, laterally with respect to the corresponding injector.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: May 24, 2016
    Assignee: INGLASS S.p.A.
    Inventors: Maurizio Bazzo, Nico Trevisiol
  • Patent number: 9205587
    Abstract: Apparatus and methods for storage and transmission of recipe data (process parameters) for the molding of articles in an injection molding apparatus. A controller includes a flow control microcontroller (MCU) that receives recipe data from a recipe storage microcontroller (MCU) mounted to a mold of an injection molding machine, the recipe storage MCU storing the recipe data defining process parameters for the molding of articles in the mold. The flow control MCU executes instructions for controlling valve pin motions according to the recipe data. In one embodiment, a human operator interface is provided for transmitting data to and/or from at least one of the recipe storage and flow control MCU's, allowing the operator to monitor, modify and/or control the process parameters during a molding cycle and/or to create a modified or new recipe for subsequent storage on the recipe storage MCU.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: December 8, 2015
    Assignee: Synventive Molding Solutions, Inc.
    Inventors: Sergio Ribeiro de Oliveira Antunes, Lin Yang, Vito Galati, Hans-Joerg Schreyer
  • Patent number: 9162383
    Abstract: Injection molding apparatus includes: a mold structure having a main axis and a mold cavity; a core in the mold cavity, defining a mold envelope bounded by an inner sidewall, an inner endwall at one end of the inner sidewall, an outer sidewall spaced apart from the inner sidewall, and an outer endwall spaced apart from the inner endwall; a nozzle at an end of the cavity, including an interior channel communicating with the mold envelope; a pin in the nozzle, moveable between a closed position forming a part of the outer endwall and blocking flow between the interior channel and the mold envelope, and an open position permitting fluid flow; and a locking pin within the core and moveable between a retracted position free of the outer endwall, and an extended position received within the outer endwall, preventing relative lateral movement of the core and the mold cavity.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: October 20, 2015
    Assignee: RAS Innovative Molding Solutions, LLC
    Inventors: Bradley D. Serafini, Henry B. Lewandowski
  • Patent number: 9017063
    Abstract: A hot runner injection molding apparatus comprising: a machine injection unit with a machine nozzle, a first machine platen fixed to a machine base, a second machine platen movable with respect to the first machine platen, a hot runner manifold, a plurality of hot runner nozzles, a movable valve pin plate connected to plurality of valve pins, at least one moving device for moving the movable plate with the valve pins (37) between at least two positions, whereupon the valve pins are displaced between at least two positions, wherein the first machine platen has a chamber within which the hot runner manifold, the movable valve pin plate and the moving device are arranged.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: April 28, 2015
    Assignee: Otto Manner Innovation GmbH
    Inventor: Swen Spuller
  • Publication number: 20150110918
    Abstract: 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.
    Type: Application
    Filed: June 13, 2013
    Publication date: April 23, 2015
    Inventors: Patrice Fabien Dezon-Gaillard, Sami Samuel Arsan
  • Patent number: 9011139
    Abstract: A mold-tool system (100), comprising: a nozzle position-adjustment assembly (104) being configured to selectively adjust position of a nozzle assembly (102) between: (i) a nozzle-loaded position, and (ii) a nozzle-unloaded position.
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: April 21, 2015
    Assignee: Husky Injection Molding Systems Ltd.
    Inventors: Thomas Andrew Lawrence, Troy Richard Mercer, Douglas R. Leblanc
  • Patent number: 8985997
    Abstract: A valve bushing having an actuator portion and a pin guiding component is disclosed. The actuator portion has a cup-shaped body with a stepped bore that defines a chamber in which a piston for opening and closing a valve gate disposed, and also defines a transfer bore extending through a base portion of the cup-shaped body. A stand-off member elevates the cup-shaped body from the manifold. The pin guiding component defines a sealing bore that extends between a body portion and a boss that extends rearward from the body portion. The boss is received in the transfer bore of the cup-shaped body to define a thermal transfer area between the pin guiding component and the actuator portion that is spaced apart from the manifold, and the actuator portion is located relative to the pin guiding component by engagement between the pin guiding component and the stand-off member.
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: March 24, 2015
    Assignee: Mold-Masters (2007) Limited
    Inventors: Peter Klobucar, Denis Babin, Fabrice Fairy
  • Patent number: 8985998
    Abstract: An injection system, in an apparatus for injection-molding plastics, comprises a manifold plate (2) having an injection nozzle (3) closed by a valve stem (7) commanded by a dual-effect pneumatic linear actuator (8, 9) wherein a piston cylinder (8) is compressed between a back plate (10) and a hot runner manifold (5). The piston cylinder bounds an annular gap into which the compressed air that drives the actuator can flow.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: March 24, 2015
    Assignee: Sacmi Cooperativa Meccanici Imola Societa' Cooperativa
    Inventors: Andrea Ravagnani, Giovanni Allegri
  • Publication number: 20150079222
    Abstract: 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.
    Type: Application
    Filed: November 25, 2014
    Publication date: March 19, 2015
    Inventors: Payman Tabassi, Kenneth Jacob
  • Patent number: 8920155
    Abstract: A locking apparatus for a machine having multiple stems which axially reciprocate with respect to a stationary unit by linkage with a reciprocating common plate. The locking apparatus includes: (a) a first locking assembly capable of alternatively locking and unlocking one of the stems to the common plate; and (b) a second locking assembly capable of alternatively locking and unlocking one of the stems to the stationary unit. The second locking mechanism is configured so that, when the first locking assembly locks a stem to the common plate, the second locking mechanism automatically unlocks that stem from the stationary unit, and when the first locking assembly is unlocked from the common plate, the second locking mechanism automatically locks that stem to the stationary unit.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: December 30, 2014
    Assignee: Caco Pacific Corporation
    Inventor: Martel B. Geibel, Jr.
  • Patent number: 8899963
    Abstract: A hot nozzle for spraying of plastic components. The hot nozzle includes a multipart nozzle body including a tip inset including a tip element having a tip section protruding outwardly beyond a circumferential surface of the multipart nozzle body into a molding plate. The tip section of the tip element is penetrated by a shut-off needle which is movable in a reciprocating manner by a drive. The shut-off needle is movable between a position in which the shut-off needle closes off a feed borehole in the molding plate and a position in which the shut-off needle opens the feed borehole.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: December 2, 2014
    Assignee: Ewikon Heisskanalsysteme GmbH
    Inventor: Peter Braun
  • Patent number: 8870564
    Abstract: 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.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: October 28, 2014
    Inventor: Hyuk Joong Kim
  • Publication number: 20140275443
    Abstract: In one embodiment, a tool, comprising: a tool stationary portion comprising a nozzle and a film gate; and a tool movable portion comprising a shut off pin opposite the nozzle and the film gate; wherein the shut off pin prevents polymer melt in the nozzle from leaking into a cavity of the tool after injection of polymer into the tool.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: SABIC INNOVATIVE PLASTICS IP B.V.
    Inventors: Ulrich Hofmann, Richard Schouwenaar
  • Patent number: 8834150
    Abstract: 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.
    Type: Grant
    Filed: October 9, 2012
    Date of Patent: September 16, 2014
    Assignee: Mold Hotrunner Solutions Inc.
    Inventor: Harald Schmidt
  • Publication number: 20140183790
    Abstract: A manifold, in a first pocket, defines a manifold orifice to supply material to a nozzle in a second pocket. A support ring in the second pocket maintains the nozzle stationary within the second pocket. A bushing extends between the pockets, fixedly attached to the manifold and laterally movable with respect to the pockets and the nozzle. At ambient temperature, the centers of the nozzle and manifold orifices are laterally offset from one another, a preload is defined between the nozzle and the bushing, another preload is defined between the manifold and the nozzle, and a gap is defined between the support ring and the pocket. In operation, when the various components thermally expand, the manifold moves laterally within the first pocket, and the nozzle remains substantially stationary within the second pocket, such that the centers of the nozzle and manifold orifices are laterally aligned, and the gap is closed.
    Type: Application
    Filed: December 28, 2012
    Publication date: July 3, 2014
    Applicant: Injectnotech, Inc.
    Inventor: Vince Ciccone
  • Publication number: 20140178525
    Abstract: 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.
    Type: Application
    Filed: December 20, 2012
    Publication date: June 26, 2014
    Applicant: MOLD-MASTERS (2007) LIMITED
    Inventor: Denis Babin
  • Patent number: 8757998
    Abstract: A coinjection molding apparatus is disclosed that provides first and second material melt streams to a nozzle. The nozzle defines a first material melt passage for receiving the first material melt stream, a second material melt passage for receiving the second material melt stream and an outer layer melt passage, which receives a portion of the first material melt stream from the first material melt passage. The first material melt stream from the first material melt passage forms an inner layer of a molded article, the second material melt stream from the second material melt passage forms a core layer of the molded article, and the first material melt stream from the outer layer melt passage forms an outer layer of the molded article, wherein the three melt streams combine prior to entering a mold cavity.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: June 24, 2014
    Assignee: Mold-Masters (2007) Limited
    Inventors: Valery Ten, Fabrice Fairy, Denis Babin, Scott Gammon
  • Patent number: 8753102
    Abstract: A coinjection molding apparatus is disclosed that provides first and second material melt streams to a nozzle. The nozzle defines a first material melt channel for receiving the first material melt stream and a second material melt channel for receiving the second material melt stream. The nozzle includes a sleeve and a nozzle tip having a tip divider. The sleeve is disposed within a longitudinal bore of the nozzle to divide the nozzle bore into the first material melt channel and the second material melt channel. The nozzle tip is coupled to a downstream end of the nozzle and defines a first material melt passage for receiving the first material melt stream from the first material melt channel of the nozzle and a second material melt passage for receiving the second material melt stream from the second material melt channel of the nozzle.
    Type: Grant
    Filed: July 15, 2013
    Date of Patent: June 17, 2014
    Assignee: Mold-Masters (2007) Limited
    Inventors: Valery Ten, Fabrice Fairy
  • Publication number: 20140151932
    Abstract: A modeling apparatus includes a first set and a second set. The first set includes a body and a first mold structure, the first mold structure is disposed on a surface of the body. The second mold includes a movable portion, a first pushing mechanism, a valve and a second pushing mechanism. A second mold structure of the movable portion is combined with the first mold structure to form an accommodating space. The first pushing mechanism is connected to the movable portion for moving the movable portion, so as to combine the second mold structure with the first mold structure. The valve is disposed on the second mold structure for injecting plastic into the accommodating space. The second pushing mechanism is connected to the pushing component. The second pushing mechanism drives the pushing component to pierce through the movable portion, to move the modeled plastic out of the accommodating space.
    Type: Application
    Filed: September 23, 2013
    Publication date: June 5, 2014
    Applicant: Wistron Corporation
    Inventors: Chun-Yen Hung, Ya-Chi Hsiao
  • Patent number: 8727766
    Abstract: A nozzle-tip insulator (100), comprising: a nozzle-contact surface (102); a mold-gate contact surface (104) being offset from the nozzle-contact surface (102); and a body (106) connecting the nozzle-contact surface (102) with the mold-gate contact surface (104), the body (106) being resiliently compressible, the body (106) defining a void formation (108), and the body (106) and the void formation (108) being coaxially concentrically positioned relative to each other.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: May 20, 2014
    Assignee: Husky Injection Molding Systems Ltd.
    Inventor: Gregory Ray Hammond
  • Publication number: 20140099398
    Abstract: 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.
    Type: Application
    Filed: October 9, 2012
    Publication date: April 10, 2014
    Applicant: MOLD HOTRUNNER SOLUTIONS INC.
    Inventor: Harald SCHMIDT
  • Publication number: 20140037781
    Abstract: Apparatus for injection-moulding of plastic materials comprising a hot runner (1), at least one injector (2) including a nozzle mobile within which is a valve pin (3) driven by a rotary electric motor (4) and an associated transmission including a screw-and-nut assembly (10) for converting the rotation of the shaft (5) of the electric motor (4) into a translation of the valve pin (3). At least two from among the valve pin (3), the rotary electric motor (4), and the screw-and-nut assembly (10) are set parallel alongside one another.
    Type: Application
    Filed: June 27, 2013
    Publication date: February 6, 2014
    Inventor: Maurizio BAZZO
  • Patent number: 8591220
    Abstract: 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.
    Type: Grant
    Filed: February 12, 2012
    Date of Patent: November 26, 2013
    Inventor: Terry L. Schwenk
  • Publication number: 20130302467
    Abstract: 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.
    Type: Application
    Filed: January 13, 2012
    Publication date: November 14, 2013
    Inventor: Hyuk Joong Kim
  • Patent number: 8562336
    Abstract: A system for mounting an injection molding system actuator to a manifold and a clamp plate comprising: a mount comprised of a thermally conductive material having first and second thermally conductive surfaces, the actuator being mounted to the first thermally conductive surface in thermal communication with the second thermally conductive surface, the clamp plate being mounted in thermal communication with the second thermally conductive surface, the actuator being mounted in thermal communication with the heated manifold; wherein the clamp plate, manifold and mold are assembled together with the actuator and the mount in an assembled operating arrangement such that the second thermally conductive surface is in compressed contact with the clamp plate under a spring force.
    Type: Grant
    Filed: May 1, 2012
    Date of Patent: October 22, 2013
    Assignee: Synventive Molding Solutions, Inc.
    Inventor: Christopher Lee
  • Patent number: 8496469
    Abstract: Closure assembly (10), for an injection unit (11) of plastic material (MP), comprising: a closing rod (16); a driving piston (15) adapted to drive an axial movement (f1) of the closing rod (16) between an open position (P1), in which the closing rod (16) opens an injection hole (13?) of a mold (13), and a closed position (P2), in which the closing rod (16) closes the injection hole (13?); an adjustment element or nut (20, 21), provided of a fine-pitch threading (21a), that is adapted to be screwed or unscrewed in one sense or the other (f2) in a corresponding threaded portion (22b) of an internal seat (22), formed in the driving piston (15), in order to regulate axially, in a micrometric way, the closing rod (16) in the closed position (P2); and an elastic washer (30, 31) that is provided for cooperating with a plurality of projections and notches (23a, 23b), formed in such internal seat (22, 22a), in order to fix the adjustment element (21) with respect to the body (15a) of the driving piston (15), once the
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: July 30, 2013
    Assignee: Thermoplay S.p.A.
    Inventor: Roberto Enrietti
  • Patent number: 8496464
    Abstract: 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.
    Type: Grant
    Filed: July 18, 2011
    Date of Patent: July 30, 2013
    Assignee: Thermoplay S.p.A.
    Inventor: Roberto Enrietti
  • Patent number: 8469687
    Abstract: A coinjection molding apparatus is disclosed that provides a skin material melt stream and a core material melt stream to a nozzle. A nozzle tip of the nozzle defines a central skin material melt passage for receiving the skin material melt stream, an annular core material melt passage for receiving the core material melt stream and an annular outer layer melt passage, which receives a portion of the skin material melt stream from the central skin material melt passage. The skin material melt stream from the central skin material melt passage forms an inner layer of a molded article, the core material melt stream from the core material melt passage forms a core layer of the molded article, and the skin material melt stream from the outer layer melt passage forms an outer layer of the molded article, wherein the three melt streams combine prior to entering a mold cavity.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: June 25, 2013
    Assignee: Mold-Masters (2007) Limited
    Inventors: Valery Ten, Fabrice Fairy, Denis Babin, Scott Gammon
  • Publication number: 20130147091
    Abstract: A valve pin actuator for an injection molding system includes a housing defining a chamber, the chamber having a nozzle opening portion and a nozzle closing portion. A piston is axially slideable within the chamber between a nozzle open position and a nozzle close position. The piston secures a valve pin to translate axial movements of the piston into axial movements of the pin. The nozzle opening portion of the chamber is configured to receive a first fluid to pressurize the nozzle opening portion to urge the piston towards the nozzle open position. The nozzle closing portion of the chamber is configured to receive a second fluid to pressurize the nozzle closing portion to urge the piston towards the nozzle close position. A fluid passage defined by the piston allows fluid communication between the nozzle opening portion and the nozzle closing portion.
    Type: Application
    Filed: December 12, 2011
    Publication date: June 13, 2013
    Applicant: MOLD-MASTERS (2007) LIMITED
    Inventor: Denis Babin
  • Patent number: 8449287
    Abstract: 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.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: May 28, 2013
    Assignee: Mold-Masters (2007) Limited
    Inventor: Bruce Catoen
  • Patent number: 8449799
    Abstract: 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.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: May 28, 2013
    Inventor: Panos Trakas
  • Publication number: 20130129856
    Abstract: 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.
    Type: Application
    Filed: July 18, 2011
    Publication date: May 23, 2013
    Inventor: Roberto Enrietti
  • Patent number: 8419416
    Abstract: A mold-tool system (100) configured to accommodate a valve stem (104), the mold-tool system (100) comprising: a nozzle assembly (402) having: a nozzle-output end (408) being configured to support, at least in part, slide movement of the valve stem (104).
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: April 16, 2013
    Assignee: Husky Injection Molding Systems Ltd.
    Inventors: Domenico Favata, Claude François Wolf, Peter Yankov, Kevin Francis Said, Darrin Albert McLeod
  • Patent number: 8419417
    Abstract: A mold-tool system (100), comprising: a nozzle housing (102) having a melt passageway (103) extending from an input end (106) to an output end (108). A valve stem (104) is: (i) slide movable along the melt passageway (103), and (ii) slide supported by the input end (106) and by the output end (108).
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: April 16, 2013
    Assignee: Husky Injection Molding Systems Ltd.
    Inventors: Domenico Favata, Claude Francois Wolf, Peter Yankov, Kevin Francis Said, Darrin Albert MacLeod
  • Patent number: 8414285
    Abstract: 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.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: April 9, 2013
    Assignee: Mold-Masters (2007) Limited
    Inventors: Valery Ten, Peter Klobucar, Denis Babin
  • Patent number: 8393889
    Abstract: Disclosed is a hot-runner system (101), including: an actuation plate (202) being movable; a valve stem (205) installed in the actuation plate (202), the valve stem (205) being movable responsive to movement of the actuation plate (202); and an electro-magnetic actuator (210) being coupled with the actuation plate (202), the electro-magnetic actuator (210) being configured to actuatably move the actuation plate (202).
    Type: Grant
    Filed: April 19, 2010
    Date of Patent: March 12, 2013
    Assignee: Husky Injection Molding Systems Ltd
    Inventors: Daniel Hontheim, Ruud Maria Theodorus Luijs
  • Patent number: 8375579
    Abstract: The disclosure relates to a system for injecting a thermoplastic material in the fluid state, including: a dispenser adapted to be maintained at an injection temperature higher than the temperature limit at which the material is in a fluid state; an injection nozzle defining at least one portion of a transition passage; a stopper mounted inside the transition passage so as to slide between a blocking position and an opening position thereof; and control means for alternately sliding the stopper, wherein the control means comprises a jack with a rod parallel to the sliding direction of the stopper, and which is secured in an offset manner on the dispenser via a flattened beam, and a lever arranged so as to tilt about an axis so as to transmit the movements of the jack rod to the stopper.
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: February 19, 2013
    Assignee: Runipsys Europe
    Inventor: Eric Deriche
  • Publication number: 20130015606
    Abstract: The invention relates, in first instance, to a plastics injection moulding tool having a hot runner nozzle (1), the hot runner nozzle having an externally or internally heatable nozzle body and a nozzle tip (3), wherein a cooling action, associated with the nozzle tip, can be carried out. In order to provide a plastics injection moulding tool and a method for plastics injection moulding using a hot runner nozzle, in which effective cooling is possible at least at the end of the injection moulding cycle, it is proposed that a cooling device (10) is provided in a region of the nozzle body, directly at or near the nozzle tip. The invention further relates to a method for carrying out a plastics injection process using a hot runner nozzle.
    Type: Application
    Filed: January 26, 2011
    Publication date: January 17, 2013
    Applicant: RPC BRAMLAGE GMBH
    Inventor: Bernd Hackmann
  • Patent number: 8353697
    Abstract: 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.
    Type: Grant
    Filed: October 21, 2008
    Date of Patent: January 15, 2013
    Assignee: Mold-Masters (2007) Limited
    Inventor: Calin Tapuchievici