And Means To Connect Nozzle To Mold Patents (Class 425/569)
  • Patent number: 10850439
    Abstract: An injection molding machine is provided with a nozzle touch mechanism configured to press a nozzle attached to an injection device against a mold, a drive unit configured to move the injection device, a drive compression member connected to the drive unit, an injection compression member connected to the injection device, at least one resilient member interposed preloaded between the drive compression member and the injection compression member, and at least one strain sensor mounted on the drive compression member.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: December 1, 2020
    Assignee: FANUC CORPORATION
    Inventors: Daisuke Hirose, Koichi Nishimura
  • Patent number: 9321205
    Abstract: Injection machine and fluid distribution system having a valve pin reciprocally movable along its longitudinal axis between upstream and downstream (axial) positions, including a valve pin rotation limiter for resisting or preventing rotation of the valve pin around its axis. The limiter includes an elongated rail having a rail axis, stationarily mounted relative to an actuator that drives the valve pin upstream-downstream along its longitudinal axis wherein the rail axis is radially spaced from the valve pin axis. A finger projects between the rail and the valve pin, having a first end mounted on or to one of the rail and the valve pin, and a second end slidably engaged against a receiving surface of the other of the rail or valve pin, wherein such engagement is adapted to resist or prevent rotation of the valve pin.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: April 26, 2016
    Assignee: Synventive Molding Solutions, Inc.
    Inventors: Vito Galati, Zhuang Rui Tan
  • Patent number: 8974222
    Abstract: A nozzle-locating insulator (300), comprising: a body assembly (302), having: a spring-facing surface (304) including: spring-contact sections (306); and spring-noncontact sections (308) interposed between the spring-contact sections (306).
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: March 10, 2015
    Assignee: Husky Injection Molding Systems, Ltd.
    Inventor: Gregory Ray Hammond
  • Publication number: 20140161925
    Abstract: A plurality of connecting rods are attached to an injection device located opposite a stationary platen on a base structure of an injection molding machine. The stationary platen is provided with a magnetism generating unit formed of a permanent magnet, and the connecting rods are provided with a magnetic body. As the magnetism generating unit and the magnetic body are attracted to each other by magnetism, a nozzle of an injection unit is brought into contact with a mold. By this structure, the stationary platen can be prevented from inclining during nozzle touch operation.
    Type: Application
    Filed: December 9, 2013
    Publication date: June 12, 2014
    Applicant: FANUC CORPORATION
    Inventor: Mitsushi YOSHIOKA
  • Patent number: 8714952
    Abstract: A system may include a die, an outlet adaptor and a die outlet. The die may include a die flow channel extending from a first end to a second end of the die and coupled to a die housing of an extruder. The outlet adaptor is receivable within the die flow channel and includes first and second ends and an outlet flow channel. The first end of the outlet adaptor cooperates with the die flow channel at the second end of the die to retain the outlet adaptor. A diameter of the outlet flow channel expands at the second end of the outlet adaptor to create a pressure drop to form the foamed article. The die outlet assembly is coupled to the outlet adaptor and includes a bore that receives a polymer from the outlet adaptor. The die outlet assembly produces a cylindrical foam article having a natural skin.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: May 6, 2014
    Assignee: Floracraft Corp.
    Inventors: Trevor Wardle, Russell Lee Schoenherr, Donald William Zwiefka
  • Patent number: 8657600
    Abstract: A plastic material injection molding system includes a feeding nozzle, a forming mold having a cave therein, and a material-passing mold having a runner therein. The runner communicates both the feeding nozzle and the cave, and has two curved parts therein for slowing down the plastic material injected from the feeding nozzle in order.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: February 25, 2014
    Assignee: Quanta Computer Inc.
    Inventors: Hsien-Ming Wu, Chao-Hung Lin
  • Publication number: 20130156883
    Abstract: A nozzle-locating insulator (300), comprising: a body assembly (302), having: a spring-facing surface (304) including: spring-contact sections (306); and spring-noncontact sections (308) interposed between the spring-contact sections (306).
    Type: Application
    Filed: July 12, 2011
    Publication date: June 20, 2013
    Applicant: HUSKY INJECTION MOLDING SYSTEMS LTD.
    Inventor: Gregory Ray Hammond
  • Publication number: 20120263823
    Abstract: A runnerless nozzle for an injection molding apparatus includes a bracing component having an internal space and a lateral bore, a nozzle tip extending from the internal space through the lateral bore of the bracing component, and a securing component installable in the internal spaced of the bracing component. At least one of the bracing component and the securing component defines a lateral channel in communication with and upstream channel for delivering molding material to the nozzle tip. The securing component includes an angled surface for wedging a likewise angled surface of the nozzle tip to engage the nozzle tip with the bracing component when the securing component is installed in the bracing component.
    Type: Application
    Filed: June 22, 2012
    Publication date: October 18, 2012
    Applicant: MOLD-MASTERS (2007) LIMITED
    Inventor: Bruce Catoen
  • Publication number: 20120251657
    Abstract: A nozzle retaining clip for retaining a nozzle assembly with a material distributing manifold comprises an attachment portion for attaching the clip to the manifold and an engagement portion for engaging a nozzle assembly abutted to the manifold. Two clips located to engage opposite sides of a nozzle assembly abutted to the manifold member are effective to retain the nozzle assembly and to allow the manifold and nozzle assembly to move relative to one another while the clips and nozzle assembly remain engaged. A first alternative clip achieves only surface contact and a second alternative clip allows protrusion of a segment of a nozzle assembly periphery through the clip. Advantageously, the clip comprises at least one locating tap to restrain movement of the clip relative to a manifold. An apparatus for injection molding comprises a manifold and nozzle assembly construction comprising clips in accordance with the invention.
    Type: Application
    Filed: March 31, 2011
    Publication date: October 4, 2012
    Inventors: James Oliver Adas, Trevor Pruden, Craig Vincent Kovacic
  • Patent number: 8252220
    Abstract: Disclosed, amongst other things, is a molding apparatus and an injection molding process. The molding apparatus includes a positioner that is configured to regulate, in use, a relative position between a gate member and a nozzle of a melt distribution apparatus between a retracted position and an extended position for adjusting a volume of a nozzle melt reservoir that is definable between the gate member and the nozzle between a reduced volume and an expanded volume, respectively. The injection molding process includes regulating a relative position between a gate member and a nozzle of a melt distribution apparatus, with a positioner, into one of a retracted position and an extended position for adjusting a volume of a nozzle melt reservoir that is definable between the gate member and the nozzle between a reduced volume and an expanded volume, respectively.
    Type: Grant
    Filed: June 5, 2009
    Date of Patent: August 28, 2012
    Assignee: Husky Injection Molding Systems Ltd.
    Inventor: Douglas James Weatherall
  • Publication number: 20120181728
    Abstract: An injection molding nozzle for dispensing of molten material includes an elongated body member having an outer surface, a first portion at a proximal end, a second portion at a distal end, and a central passageway extending longitudinally therethrough from the first portion to the second portion. The central passageway includes an inlet defined at the proximal end and splits outwardly at the second portion to form a radially extending passageway leading to an outlet. A tip member is coupled to the outlet to facilitate dispensing of molten material into a mold cavity. A groove is defined on the outer surface of the body member that winds from the first portion to a heated section of the second portion that is positioned adjacent to the tip member.
    Type: Application
    Filed: July 23, 2010
    Publication date: July 19, 2012
    Applicant: Incoe Corporation
    Inventor: Scott Greb
  • Patent number: 8070479
    Abstract: An injection mold device includes: a stationary mold plate including a stationary mold body, a protrusion, and a sprue having a sprue open end; a movable mold plate formed with a first forming part; and a stripper plate including a stripper mold body, a recess, a second forming part, and a plurality of runners. When the stationary mold plate, the movable mold plate, and the stripper plate are assembled, the protrusion is received within the recess such that the sprue open end is in fluid communication with the runners, and the first forming part and the second forming part form a mold cavity.
    Type: Grant
    Filed: April 29, 2009
    Date of Patent: December 6, 2011
    Assignees: Silitek Electronic (Guangzhou) Co., Ltd., Lite-On Technology Corp.
    Inventors: Yuing Chang, Chung-Shin Liu, Li-Wei Chen
  • Patent number: 8033819
    Abstract: A mold includes a gate communicating with the entire perimeter of a cavity serving as a space configured to form a molded article. A self-curable molding material with flowability is fed into the perimeter of the cavity through the gate; hence, the mold has a small number of dead ends compared with the case where, for example, the molding material is fed into the cavity through a part of the cavity, preventing the formation of bubbles left in the cavity. The arrangement of a gate and a vent each making an acute angle results in the spontaneous separation of the molded article in the cavity from solidified material portions in the gate and the vent due to shrinkage on curing.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: October 11, 2011
    Assignee: NGK Insulators, Ltd.
    Inventors: Tsuneaki Ohashi, Masakatsu Inoue, Toshiichi Ikami, Keiichiro Watanabe, Kunihiko Yoshioka, Kazuhi Matsumoto
  • Publication number: 20110117238
    Abstract: The invention relates to an injection mold's injection nozzle (10) comprising a feed pipe (12) subtending in the axial direction (A) a flow duct (16) for a flowable/fluid material, a nozzle tip (26) being inserted into the feed pipe (12) and extending the flow duct (16). In order to reduce temperature drops, the injection molding nozzle (10) encloses at least one thermal insulator (32) resting against the injection mold and at least partly enclosing the nozzle tip (26).
    Type: Application
    Filed: May 7, 2009
    Publication date: May 19, 2011
    Applicant: GUNTHER HEISSKANALTECHNIK GMBH
    Inventors: Herbert Gunther, Siegrid Sommer
  • Publication number: 20100295216
    Abstract: Provided is an injection mold which can reduce the amount of resin that is separated from injection-molded parts and then thrown away. The injection mold includes for an embodiment an extension cylinder coupled to an upper clamp plate and having a nozzle at an end thereof; a nozzle positioner disposed under the nozzle, the nozzle positioner having a nozzle insertion groove adapted to receive the nozzle; a gate-lock-pin holder disposed under the extension cylinder and the nozzle positioner, comprising a gate lock pin which has a first end coupled to a gate molded part and a second end coupled to the gate-lock-pin holder, and adapted to separate the gate molded part from an injection-molded part; a gate stripper plate disposed under the gate-lock-pin holder and adapted to separate the gate molded part from the nozzle; and a cavity plate and a core plate disposed under the gate stripper plate and having a cavity which is shaped like the injection-molded part.
    Type: Application
    Filed: December 8, 2009
    Publication date: November 25, 2010
    Inventors: Su-Dong Shin, Myoung-Jin Kim, Jeong-Hun Heo
  • Publication number: 20100255145
    Abstract: An injection molding nozzle (10) for injection molding equipment and comprising a nozzle casing (14) subtending a longitudinal axis (L) fitted with at least one flow duct (18) for a fluid processing material, further comprising at least one nozzle tip (24) discharging the fluid processing material out of the nozzle casing (14), the minimum of one nozzle tip (24) running transversely to the longitudinal axis (L) of the nozzle casing (14), the minimum of one nozzle tip (24) being integral with the nozzle casing (14).
    Type: Application
    Filed: November 12, 2008
    Publication date: October 7, 2010
    Inventors: Herbert G√ľnther, Siegrid Sommer, Torsten Schnell
  • Publication number: 20100227019
    Abstract: An injection molding apparatus includes an injection molding nozzle having a nozzle body defining a channel for flow of molding material and a nozzle tip coupled to the nozzle body. The nozzle tip is shaped to define a converging gap with a mold component into which the nozzle tip is inserted during use. A seal piece having a wedge or wedge-like portion is disposed between the nozzle tip and the mold component Pressure of molding material acting on a surface of the wedge portion wedges the wedge portion into the converging gap.
    Type: Application
    Filed: March 5, 2009
    Publication date: September 9, 2010
    Inventors: Hitesh Kaushal, Douglas Ursu
  • Patent number: 7780435
    Abstract: An apparatus for injection molding is provided. The apparatus includes an injection unit and a mold unit. The injection unit includes a nozzle having a first flat end surface. The mold unit includes a sprue bushing for communicating with the nozzle. The sprue busing has a second flat end surface. The sprue bushing is in contact with the first flat end surface of the nozzle. Wherein a protrusion is formed on one of the first flat end surface of the nozzle and the second flat end surface of the sprue bushing, and a corresponding recess is defined on the other of the first flat end surface of the nozzle and the second flat end surface of the sprue bushing. The protrusion is engaged in the recess.
    Type: Grant
    Filed: May 12, 2008
    Date of Patent: August 24, 2010
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Chien-Feng Huang
  • Publication number: 20100183762
    Abstract: An injection molding apparatus having a sealing arrangement between a hot runner manifold and edge-gated nozzle that accommodates thermal expansion during operation is disclosed. A spacer element is axially fixed in position between the manifold and a mold plate in which the nozzle sits. The nozzle includes a reduced diameter spigot portion on an upstream end that is in a telescopic/slidable relationship with a bore of the spacer element. The nozzle includes radially extended nozzle tips axially fixed in position at a downstream end of the nozzle that are in fluid communication with respective mold gates and corresponding mold cavities. In the cold condition, a gap G exists between a shoulder of the nozzle proximate the spigot portion and a corresponding surface of the spacer element bore. Under operating conditions, thermal expansion of the nozzle is accommodated in a direction of the manifold by the gap.
    Type: Application
    Filed: January 21, 2009
    Publication date: July 22, 2010
    Applicant: MOLD-MASTERS (2007) LIMITED
    Inventor: Denis Babin
  • Patent number: 7704069
    Abstract: Injection molding apparatus has upper and lower mold halves that split along the center line of the parison cavity and the gate opening leading thereto. Each hot melt injection nozzle is received within a tubular insert cup having a reduced diameter tip that is seated within the gate opening. The cup is mounted to the lower mold half so as to remain secured thereto as the upper mold half opens and closes the mold. The base end of each nozzle has a swivel ball and socket relationship with the manifold block which supplies it with hot melt, while the tip end of each injection nozzle has a swivel ball and socket type interface with the interior front end of the insert cup, thus providing for dimensional variations in the parts of the tooling that arise during non-uniform thermal expansion and contraction thereof.
    Type: Grant
    Filed: December 20, 2005
    Date of Patent: April 27, 2010
    Assignee: R&D Tool & Engineering Co.
    Inventors: Jincheng Chen, Brian R. Lefebure, Paul W. Mitchell
  • Patent number: 7695272
    Abstract: A device for producing a polymerizable synthetic material optical lens, including a closure member (12) that is adapted to grip two molding shells (14A, 14B) circumferentially to define a molding cavity (15) in conjunction with the shells (14A, 14B), the closure member (12) including a synthetic material wall (123) adapted to come into contact with the molding shells (14A, 14B) and the closure member (12) incorporating a molding material introduction passage (125) discharging into the molding cavity (15) through a casting opening (126); characterized in that the closure member (12) includes a seal (40) that forms the contact wall (123) and the introduction passage (125), which joint (40) is formed of an elastomer material and of a rigid insert (43) at least part of which has the elastomer material molded over it, the introduction passage (125) being inside the insert (43).
    Type: Grant
    Filed: September 11, 2006
    Date of Patent: April 13, 2010
    Assignee: Essilor International (Compagnie Generale d'Optique)
    Inventors: Yohann Felten, Marc Huard
  • Publication number: 20100068332
    Abstract: The invention relates to an apparatus closing and/or connecting and/or deviating duct segments (12a) in a hot or cold runner manifold (10; 80) fitted with at least one flow duct (12) which is loaded with a plasticized material and which by means of stoppers (18; 82; 100; 110; 120) affixed to said manifold is sealable in fluid-tight manner and/or deviatable and/or connectable with a further flow duct. To create an improved apparatus to close duct segments (12a) in a hot/cold runner manifold (10; 80), each stopper (18: 82; 100; 110; 120) is affixed to the manifold in a recess running substantially perpendicularly to the duct segment (12a) and crossing latter. Furthermore each stopper (18; 82; 100; 110; 120) comprises at least one circumferential surface (24; 86) which when the apparatus is operating shall rest in fluid-tight manner against this opposite recess surface.
    Type: Application
    Filed: September 26, 2007
    Publication date: March 18, 2010
    Inventor: Herbert Gunther
  • Publication number: 20100028481
    Abstract: A nozzle for an injection molding apparatus is provided. The injection molding apparatus has a mold component that defines a mold cavity and a gate into the mold cavity. The nozzle includes a nozzle body, a heater, a tip, a tip retainer, and a nozzle seal piece. The nozzle body defines a nozzle body melt passage therethrough that is adapted to receive melt from a melt source. The heater is thermally connected to the nozzle body for heating melt in the nozzle body. The tip defines a tip melt passage therethrough that is downstream from the nozzle body melt passage, and that is adapted to be upstream from the gate. The tip retainer is removably connected with respect to the nozzle body. The nozzle seal piece is connected with respect to the nozzle body. The material of nozzle seal piece has a thermal conductivity that is less than at least one of the thermal conductivity of the material of the tip and the thermal conductivity of the material of the tip retainer.
    Type: Application
    Filed: September 18, 2009
    Publication date: February 4, 2010
    Applicant: MOLD-MASTERS (2007) LIMITED
    Inventor: Gheorge (a.k.a.George Olaru) Olaru
  • Publication number: 20100015274
    Abstract: An injection moulding tip (3) for an injection moulding nozzle assembly (100) has an inlet (4a) at a first end, at least one outlet (4b) at a second end and a flow path (4) between the inlet (4a) and the outlet (4b). A first portion (26) of the tip (3) adjacent the first end has a first diameter, a second portion (31) adjacent the second end has a second diameter, and a central portion (29) between the first and second portions has a diameter that is greater than the first and second diameters. An injection moulding tip is also disclosed.
    Type: Application
    Filed: April 24, 2007
    Publication date: January 21, 2010
    Applicant: VOLASTIC LIMITED
    Inventor: Robert John Fill
  • Patent number: 7604477
    Abstract: Disclosed is a mold carrier having: a first external surface and a second external surface being located opposite the first external surface, arranged to mount, in use, respective mold halves; a main hot runner channel; first and second hot runner nozzles in a back-to-back configuration, the first and second hot runner nozzles having bases and connected to the main hot runner channel to receive, in use, molten plastic therefrom, the first and second hot runner nozzles each having a substantially planar sealing surface configured to provide an interface, in use, to a substantially planar interface surface in the respective mold halves; and springs operatively mounted between the nozzle bases and nozzles to spring-load the nozzles against the mold halves for improved sealing sprue bushings being received in the mold halves; and mold locating rings being received by the first external surface and the second external surface, the mold locating rings being configured to locate and position the mold halves relative
    Type: Grant
    Filed: January 26, 2005
    Date of Patent: October 20, 2009
    Assignee: Husky Injection Molding Systems Ltd.
    Inventor: Pierre Glaesener
  • Publication number: 20090017155
    Abstract: An apparatus for injection molding is provided. The apparatus includes an injection unit and a mold unit. The injection unit includes a nozzle having a first flat end surface. The mold unit includes a sprue bushing for communicating with the nozzle. The sprue busing has a second flat end surface. The sprue bushing is in contact with the first flat end surface of the nozzle. Wherein a protrusion is formed on one of the first flat end surface of the nozzle and the second flat end surface of the sprue bushing, and a corresponding recess is defined on the other of the first flat end surface of the nozzle and the second flat end surface of the sprue bushing. The protrusion is engaged in the recess.
    Type: Application
    Filed: May 12, 2008
    Publication date: January 15, 2009
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: Chien-Feng Huang
  • Publication number: 20080171100
    Abstract: An injection molding melt-conveyance system for conveying a molten molding material from an injection machine to an injection mold. The injection molding melt-conveyance system includes a first component having a first melt-channel and further includes a second component having a second melt-channel. A constant-force seal spring urges the first and second components toward one another so as to effect a seal that inhibits molten material flowing between the first and second melt channels from leaking through the seal. The constant force seal spring includes one or more Belleville springs each having an available deflection to thickness ratio chosen to provide that Belleville spring with a substantially constant spring force over a wide range of deflection.
    Type: Application
    Filed: January 17, 2007
    Publication date: July 17, 2008
    Applicant: HUSKY INJECTION MOLDING SYSTEMS LTD.
    Inventor: Abdeslam BOUTI
  • Patent number: 7329118
    Abstract: An expansion nozzle for conducting melt from a floating manifold to a mold assembly comprises a bushing having a bushing flange and spigot having a passage therethrough joining a nozzle inlet and an outlet, a head having a seating surface and a bore through the head slidably receiving the spigot so that the spigot is movable relative to the head over a range from abutting contact of opposing surfaces of the head and bushing flange to a limit of axial separation of the opposing surfaces, axial separation of opposing surfaces of the head and bushing flange being maintained throughout an operating temperature range. Springs maintain sealing contact of a seating surface of the head with a mating surface of the mold assembly. Advantageously, a locating ring provides a reaction surface for the springs and supports the head to resist moments arising from axial misalignment of the expansion nozzle and mold assembly.
    Type: Grant
    Filed: November 12, 2005
    Date of Patent: February 12, 2008
    Assignee: D-M-E Company
    Inventors: Trevor Pruden, Fred Steil
  • Patent number: 7314369
    Abstract: A mechanism for pressing a nozzle 26 of an injection device 10 against a die 33, comprises a hooking device 12 which moves so that a hooking body 23 hooks or does not hook on a to-be-hooked portion 24; and a traction device 11 having, on its one end, the hooking device 12 and having, on its other end, the injection device 10. In this mechanism, the portion of the hooking device 12, opposite to the side adjacent to the traction device 11 is attached to the die 33 in the vicinity of the portion of the die 33, against which the nozzle 26 is abutted.
    Type: Grant
    Filed: October 5, 2005
    Date of Patent: January 1, 2008
    Assignee: Kabushiki Kaisha Meiki Seisakusho
    Inventors: Satoharu Nishino, Takashi Shinoda
  • Patent number: 7303718
    Abstract: A space 12 is formed at a tip portion of a nozzle 1 so as to decrease a thermal transfer of the nozzle 1. Alternatively, a center portion of one of a semi-spherically protruded surface of the tip portion of the nozzle 1 and a semi-spherically recessed surface of a sprue bush protrudes so that the radius of curvature of one semi-spherical surface is the same as the radius of curvature of the other semi-spherical surface. As a result, since the nozzle 1 and the sprue bush 2 are surface-contacted, heat of the tip portion of the nozzle 1 absorbed to the sprue bush 2 is increased. Thus, the temperature of the tip portion of the nozzle 1 can be lowered easily. After the resin material injected into the molding cavity 11 is cooled, when the sprue portion is removed from the fixed die, a tip portion of a rod-shaped protrusion portion of the sprue can be properly cut.
    Type: Grant
    Filed: June 6, 2003
    Date of Patent: December 4, 2007
    Assignee: Sony Disc & Digital Solutions Inc.
    Inventors: Shinsuke Kishi, Osamu Matsuura
  • Patent number: 7284979
    Abstract: An injection molding self aligning articulated joint configured to be disposed between an injection unit and a hot runner. A joint is provided having first and second spherical surfaces and a melt channel therein. The joint is coupled to one of the injection unit and the hot runner. First and second concave pads are provided to as to be respectively in contact with the first and second spherical surfaces. The first and second concave pads are configured to be movable with respect to the first and second spherical surfaces. At least one of the first and second concave pads is coupled to the other one of the injection unit and the hot runner.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: October 23, 2007
    Assignee: Husky Injection Molding Systems Ltd.
    Inventor: Arnold Mai
  • Publication number: 20070178186
    Abstract: A high-stress seal for injection molding machines, intended for sealing the gap between the injector nozzle and the injector rail of the tool. The seal in the ingate area is designed in a dome shape with an opening in the top of the dome for flux to enter. Correspondingly, the injector nozzles and the opposing wall of the injector rail of the tool have a dome-shaped design and are spatially adapted to the seal. This construction provides the seal with very dense, firm placement when the injector is pressed into the tool recess, and flux under high pressure cannot dislodge it.
    Type: Application
    Filed: January 30, 2007
    Publication date: August 2, 2007
    Applicant: INCOE CORPORATION
    Inventor: Michael Goinski
  • Patent number: 7207796
    Abstract: Coinjection molding nozzle apparatus and method includes structure and/or steps whereby a first nozzle melt channel is kept thermally separated from a second nozzle melt channel. Preferably, grooves in the nozzle body or a separate nozzle pipe keep the first and second nozzle melt channels thermally separated. Preferably, a highly thermally conductive nozzle tip is removably coupled to the nozzle body and includes first and second nozzle tip melt channels that merge together before the mold gate.
    Type: Grant
    Filed: July 1, 2004
    Date of Patent: April 24, 2007
    Assignee: Husky Injection Moldiing Systems Ltd.
    Inventor: Raymond J. Rosner
  • Patent number: 7165968
    Abstract: An injection molding sealing apparatus configured to be installed in a coinjection hot runner with a coinjection nozzle, the coinjection nozzle having at least two melt channels ending at the same gate. The sealing apparatus is configured for sealing the coinjection hot runner to a hot runner sprue bushing, which is coupled to an injection assembly, during relative movement between (i) the coinjection hot runner and (ii) a stationary mold or machine section. Sealing structure is configured to seal the coinjection molding hot runner sprue bushing to the coinjection hot runner during the relative movement. Coupling structure is configured to provide relative movement between the injection assembly and the stationary mold or machine section.
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: January 23, 2007
    Assignee: Husky Injection Molding Systems Ltd.
    Inventor: Nicholas W. Serniuck
  • Patent number: 7165958
    Abstract: Method and apparatus are provided for sealing interfaces within an injection mold having a first surface and a second surface includes an active material actuator configured to be disposed in a manner suitable for generating a force between the first surface and the second surface. The active material actuator is configured to generate a force in response to sense signals from a transmission structure. Methods and apparatus are also provided for centering a nozzle tip within a gate opening, and adjusting tip height of a nozzle tip with respect to a gate opening, also using active material inserts.
    Type: Grant
    Filed: April 23, 2004
    Date of Patent: January 23, 2007
    Assignee: Husky Injection Molding Systems Ltd.
    Inventor: Edward J. Jenko
  • Patent number: 7156636
    Abstract: A nozzle contact device of an injection machine has an injection device, a nozzle, a flexible body, a tension buffer device and a tension-measuring device. The nozzle is installed a front side of the injection device. The flexible body is used to drive the injection device to contact or separate from a mold. The tension buffer device is installed at a lateral side of the flexible body, and has an elastic body for receiving tension from the flexible body and decomposing the tension to form a component force and a displacement. The tension-measuring device is used to measure the displacement of the tension buffer device and deciding a contact force between the nozzle and the mold.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: January 2, 2007
    Assignee: Industrial Technology Research Institute
    Inventors: Ming-Chang Teng, Cheng-Jien Chen
  • Patent number: 6881051
    Abstract: A conduction member having conduction path for injecting molten molding material within a mold space is fitted to one of a pair of mold bodies which form the disc-shaped mold space. A first heat suppressing member for suppressing heat within the conduction path from being transmitted to the one of the mold bodies is disposed between the conduction member and the one of the mold bodies. Further, a second heat suppressing member is disposed at a position opposite to the first heat suppressing member at the time of mold-clamping the pair of the mold bodies.
    Type: Grant
    Filed: March 19, 2001
    Date of Patent: April 19, 2005
    Assignee: Pioneer Corporation
    Inventors: Noriyoshi Shida, Keiji Suga, Tetsuya Imai
  • Publication number: 20040265417
    Abstract: A nozzle for an injection molding apparatus is provided. The injection molding apparatus has a mold component that defines a mold cavity and a gate into the mold cavity. The nozzle includes a nozzle body, a heater, a tip, a tip surrounding piece and a mold component contacting piece. The nozzle body defines a nozzle body melt passage therethrough, that is adapted to receive melt from a melt source. The heater is thermally connected to the nozzle body for heating melt in the nozzle body. The tip defines a tip melt passage therethrough, that is downstream from the nozzle body melt passage, and that is adapted to be upstream from the gate. The tip surrounding piece is removably connected with respect to said nozzle body. The mold component contacting piece is connected with respect to the nozzle body.
    Type: Application
    Filed: July 27, 2004
    Publication date: December 30, 2004
    Inventor: George Olaru
  • Publication number: 20040256767
    Abstract: A 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. A piston associated with the valve pin includes a cylindrical body having first and second co-axially aligned internally threaded bores of respective first and second diameters. Preferably, the threads formed in the first and second bores are of the opposite hand. First and second externally-threaded cylindrical valve pin positioning members are respectively received in the first and second bores. Each of the positioning members includes a head portion and a tip portion. The tip of the second positioning member is in contact with the head of the first positioning member to lock the first positioning member in place, and the tip of the first positioning member is in contact with a head portion on the valve pin to locate the valve pin.
    Type: Application
    Filed: June 23, 2004
    Publication date: December 23, 2004
    Inventor: Panos Trakas
  • Publication number: 20040258795
    Abstract: A flange is provided for aligning an injection molding nozzle with a mold gate and insulating the injection molding nozzle from a mold plate. The flange is separate from the nozzle and is releasably connected to a body of the nozzle adjacent to a nozzle head. When the flange and nozzle are coupled, they can be inserted into and removed from a nozzle recess included within the mold plate as a unit.
    Type: Application
    Filed: June 23, 2004
    Publication date: December 23, 2004
    Inventors: Hans Guenther, Helen Verriet, Glenn Roy Sterritt
  • Publication number: 20040258788
    Abstract: A nozzle for an injection molding apparatus is provided. The nozzle includes a nozzle body, a heater, a tip, a tip surrounding piece and a seal piece. The nozzle body defines a nozzle body melt passage, which is adapted to be in fluid communication with an upstream melt source. The heater is thermally connected to the nozzle body for heating melt in the nozzle body melt passage. The tip is removably connected to the nozzle body. The tip defines a tip melt passage therethrough. The tip melt passage is downstream from and in fluid communication with the nozzle body melt passage, and is adapted to be upstream from and in fluid communication with a mold cavity in a mold component. The tip surrounding piece is removably connected with respect to the nozzle body. The tip surrounding piece is spaced from said tip. The seal piece is positioned between the tip and the tip surrounding piece.
    Type: Application
    Filed: December 8, 2003
    Publication date: December 23, 2004
    Inventor: George Olaru
  • Publication number: 20040183231
    Abstract: A space 12 is formed at a tip portion of a nozzle 1 so as to decrease a thermal transfer of the nozzle 1. Alternatively, a center portion of one of a semi-spherically protruded surface of the tip portion of the nozzle 1 and a semi-spherically recessed surface of a sprue bush protrudes so that the radius of curvature of one semi-spherical surface is the same as the radius of curvature of the other semi-spherical surface. As a result, since the nozzle 1 and the sprue bush 2 are surface-contacted, heat of the tip portion of the nozzle 1 absorbed to the sprue bush 2 is increased. Thus, the temperature of the tip portion of the nozzle 1 can be easily lowered. After resin material injected into the molding cavity 11 is cooled, when the sprue is removed, a tip portion of a rod-shaped protrusion portion of the sprue can be properly cut.
    Type: Application
    Filed: January 30, 2004
    Publication date: September 23, 2004
    Inventors: Shinsuke Kishi, Osamu Matsuura
  • Patent number: 6793477
    Abstract: A tetragonal prism having a rectangular cross section is attached, as a linear motor movable section, to a moving plate to which a screw is attached rotatably and also immovably in an axial direction. A magnet is attached to each surface of the movable section. A hole section is provided in an outer frame. A linear motor coil is provided on the linear motor fixed section so that it may face the magnet on the surface of the movable section. A screw shaft is rotated by a motor through a measuring shaft penetrating a center of the movable section. By driving the linear motor comprising the magnet and the coil corresponding to each other, the screw is moved and injected in an axial direction. The fixed section is detachable and a gap between the magnet and the coil can be easily adjusted.
    Type: Grant
    Filed: April 23, 2001
    Date of Patent: September 21, 2004
    Assignee: Fanuc Ltd.
    Inventor: Mitsushi Yoshioka
  • Publication number: 20040156944
    Abstract: An injection molding apparatus including a manifold having a manifold melt channel, a nozzle having a nozzle melt channel, a slidable seal having seal melt channel located between the nozzle and the manifold melt channels, and a biasing element that provides sealing contact between the slidable seal and the manifold and nozzle to maintain a sealed melt path through the manifold, seal and nozzle melt channels.
    Type: Application
    Filed: February 11, 2004
    Publication date: August 12, 2004
    Applicant: Mold-Masters Limited
    Inventor: George Olaru
  • Publication number: 20040146598
    Abstract: An injection molding apparatus includes a manifold and a nozzle, which is received in an opening in a mold plate, including a nozzle channel for receiving the melt stream from the manifold channel, the nozzle channel being aligned with a first axis. A nozzle tip is received in a downstream end of the nozzle. The nozzle tip includes a melt channel for receiving the melt stream from the nozzle channel of the nozzle. A valve pin guiding portion is provided at a downstream end of the nozzle tip including an outwardly extending flange having a peripheral edge that abuts an inner wall of the opening to align the melt channel with a second axis through a mold gate. A valve pin is movable through the melt channel to selectively open the mold gate. Wherein the nozzle tip is flexible in order to compensate for the first axis and the second axis being out of alignment.
    Type: Application
    Filed: November 4, 2003
    Publication date: July 29, 2004
    Applicant: Mold-Masters Ltd.
    Inventors: Robert Sicilia, Denis Babin
  • Publication number: 20040137107
    Abstract: A nozzle for an injection molding apparatus is provided. The injection molding apparatus includes a manifold and a mold component. The manifold has at least one runner therein that is downstream from a melt source. The mold component defines at least one mold cavity and defining a gate into each mold cavity. The gate defines an axis. The mold component has a mold component alignment surface thereon. The nozzle includes a nozzle body, a tip, a tip surrounding piece and an alignment piece. The nozzle body defines a nozzle body melt passage, which is adapted to be in fluid communication and downstream from the at least one runner. The tip is removably connected to the nozzle body. The tip defines a tip melt passage therethrough. The tip melt passage is downstream from and in fluid communication with the nozzle body melt passage, and is upstream from and in fluid communication with the gate. The tip surrounding piece is removably connected with respect to the nozzle body.
    Type: Application
    Filed: November 21, 2003
    Publication date: July 15, 2004
    Inventors: Denis Babin, Gino Colonico
  • Publication number: 20040005380
    Abstract: A seal is provided between a nozzle and a manifold. The seal provides a melt channel between an outlet of the manifold and a nozzle channel. The seal has higher thermal expansion coefficient than both the nozzle and the manifold to provide an improved seal between the manifold and the nozzle when the injection molding apparatus is at an operating temperature.
    Type: Application
    Filed: February 4, 2003
    Publication date: January 8, 2004
    Inventors: Denis Babin, Craig Renwick, Robert Sicilia, Helen Verriet
  • Publication number: 20030180412
    Abstract: According to the present invention, a nozzle cap is provided which has a housing end that threadedly engages the nozzle housing to secure the nozzle tip to the nozzle housing. The remainder of the cap substantially fills the space between the nozzle tip and the gate insert while maintaining a small clearance between the cap and both the nozzle tip and the gate insert in the region surrounding an outlet end of the nozzle. The clearance prevents direct conductive heat transfer from the outlet end of the nozzle tip to the gate insert yet is sufficiently small enough to substantially eliminate melt to flow past it.
    Type: Application
    Filed: March 22, 2002
    Publication date: September 25, 2003
    Inventor: Gary Fong
  • Publication number: 20030173711
    Abstract: The invention concerns in particular a mould for injection moulding of a flexible tube, said mould comprising as moulding tools, a nozzle receptacle (1), an impression (2) and a core (3), housed in a stack of plates (P4, P5, P6, P7). The invention is characterised in that said moulding tools (1, 2, 3) have pairs respective conical support surfaces (101, 201, 301, 102. 302), through which the tools are centred and aligned with one another, each support surface being formed by a portion of tools deprived of transverse mobility.
    Type: Application
    Filed: November 15, 2002
    Publication date: September 18, 2003
    Inventor: Gery Dambricourt
  • Publication number: 20030157212
    Abstract: An injection molding apparatus comprises a first sprue bar element having a first sprue channel for receiving a melt stream of moldable material under pressure. A second sprue bar element has a second sprue channel for selectively receiving the melt stream from the first sprue channel. A manifold has a manifold channel for receiving the melt stream from the second sprue channel and delivering the melt stream to a nozzle channel of a nozzle. A mold cavity receives the melt stream from the nozzle. The nozzle channel communicates with the mold cavity through a mold gate. A first gate assembly is coupled to an outlet of the first sprue bar element for selectively restricting the flow of the melt stream from the first sprue channel. The first gate assembly is movable to restrict the flow when the flow of the melt stream between the first sprue channel and the second sprue channel is interrupted.
    Type: Application
    Filed: February 19, 2002
    Publication date: August 21, 2003
    Inventor: Robert Sicilia