Plural Mold Cavities Patents (Class 425/588)
  • Publication number: 20090152769
    Abstract: A first mold has a core passage, and first and second cavities in fluid communication with each other at the core passage. A second mold has first and second nozzles therein that inject first and second resins to the first and second cavities, respectively. The core member is slidable within the core passage to provide or block the fluid communication between the cavities, and has a third nozzle therein to inject a third resin to the core passage. The first and second resins are injected into the cavities. The core member is moved to block the fluid communication between the cavities, before injecting the first and second resins is completed. The third resin is injected while moving the core member to provide the fluid communication, after injecting the first and second resins is completed. The molds are separated, thereby yielding a single molded product, such as a vehicle door trim.
    Type: Application
    Filed: October 2, 2008
    Publication date: June 18, 2009
    Applicant: Kia Motors Corporation
    Inventor: Jongho Lee
  • Publication number: 20090152745
    Abstract: A method for manufacturing an integrated solar cell and concentrator. The method includes providing a first photovoltaic region and a second photovoltaic region disposed within a first mold member. A second mold member is coupled to the first mold member to form a cavity region. The cavity region forms a first concentrator region overlying a vicinity of the first photovoltaic region and a second concentrator region overlying a vicinity of the second photovoltaic region. The method includes transferring a molding compound in a fluidic state into the cavity region to fill the cavity region with the molding compound and initiating a curing process of the molding compound to form a first concentrator element and a second concentrator element overlying the respective photovoltaic regions.
    Type: Application
    Filed: December 11, 2008
    Publication date: June 18, 2009
    Applicant: Solaria Corporation
    Inventors: KEVIN R. GIBSON, ABHAY MAHESHWARI
  • Publication number: 20090152746
    Abstract: An over-molding tool is provided for over-molding an over-mold onto a fiber optic cable assembly. The over-molding tool includes first and second mold tool sets. The first mold tool set applies a first portion of the over-mold onto the fiber optic cable assembly. The second mold tool set then applies a second portion of the over-mold onto the fiber optic cable assembly. In preferred embodiments, the first and the second portions of the over-mold fuse to each other. By employing the first and the second mold tool sets, the fiber optic cable assembly can be supported at closer intervals along its length when being over-molded in comparison to a single, longer mold tool set. In addition, a lower capacity injection pump can be used when applying the over-mold in two portions. In other embodiments, additional mold tool sets can be added that sequentially apply additional portions of the over-mold.
    Type: Application
    Filed: October 16, 2008
    Publication date: June 18, 2009
    Applicant: ADC Telecommunications, Inc.
    Inventors: Dennis Ray Wells, James W. Conroy, Scott Carlson, Keith Nelson, Gregory W. Kassekert, Patrick Kuplic
  • Patent number: 7547406
    Abstract: A method of making shaped articles from highly condensed polyester melt and especially preforms for the blow molding of food and especially beverage containers. A melt is continuously withdrawn from the polycondensation reactor and is fed to the shape-imparting units, especially a multiplicity of injection-molding machines without solidification between the final reactor and the injection molders and without degassing between the final reactor and the injection molding machines.
    Type: Grant
    Filed: October 14, 2004
    Date of Patent: June 16, 2009
    Assignee: Lurgi Zimmer GmbH
    Inventors: Brigitta Otto, Roland Schäfer, Holger Bachmann, Ludwig Hölting, Stefan Deiss
  • Patent number: 7547207
    Abstract: A cooling arrangement is provided for a mold centering device for multi-level stack molds having a spline shaft with a central region journaled to an intermediate mold level with involute spline pathways extending in oppositely twisting helices from the central region toward opposite ends thereof and respective spline nuts secured to adjacent mold levels threadedly engaging the spline pathways to run therealong for converting linear motion into rotational motion and vice versa thereby controlling relative opening and closing rates of the adjacent mold levels relative to the intermediate mold levels therebetween. The cooling arrangement has an internal fluid passageway extending along the spline shaft into a region of the spline shaft received in the spline nuts. A fluid inlet communicates with and supplies fluid to the fluid passageway. A fluid outlet communicates with and discharges fluid from the fluid passageway.
    Type: Grant
    Filed: April 2, 2007
    Date of Patent: June 16, 2009
    Assignee: Stack Teck Systems Ltd.
    Inventors: Mihai Berceanu, Jeffrey Ngai, Filippo Martino, Vincent Travaglini, Kyung-Tae Lee, Gary Fong
  • Publication number: 20090127726
    Abstract: Systems and methods for molding an intraocular lens (IOL) are disclosed. The system for making an intraocular lens comprises a mold insert and a spacer adapted to be positioned between the first and second portions of the mold insert. The method of making a dual-element intraocular lens comprises providing a mold insert including a spacer.
    Type: Application
    Filed: November 21, 2007
    Publication date: May 21, 2009
    Inventors: John C. Spalding, Daniel P. Barrows
  • Publication number: 20090127725
    Abstract: Systems and methods for making intraocular lenses (IOLs) are disclosed. The system for making an intraocular lens comprises a paddle core comprising at least a portion of a channel, and a two-cavity mold frame constructed and arranged to support the paddle core. A method of making an IOL is also provided comprising inserting the paddle core within a two-cavity mold frame, injecting a lens forming material into the two-cavity mold frame through the channel of the paddle core, and curing the lens forming material.
    Type: Application
    Filed: November 21, 2007
    Publication date: May 21, 2009
    Inventors: Graham W. Biddle, Anita M. Graney, Daniel P. Barrows
  • Publication number: 20090117648
    Abstract: The invention concerns a novel sample tube and a method of manufacturing a such a sample tube. According to the method an oversized mould cavity is formed with an opposing pair of mould members of an injection moulding machine, the mould members being movable relative to each other and between which mould members the sample tube is formed. A volume of resin exceeding the prescribed volume of the sample tube is injected into the cavity and force is applied to said mould members in order to reduce the volume of said mould cavity for displacing molten polymer in the cavity and for compressing the polymer to form said sample tube. By means of the invention, sample tubes and vessels having ultra thin walls can be manufactured.
    Type: Application
    Filed: November 4, 2008
    Publication date: May 7, 2009
    Applicant: BIOINNOVATIONS OY
    Inventor: Bruce R. TURNER
  • Patent number: 7524185
    Abstract: A book molding system including a bottom mold portion, a top mold portion, a core retainer bar and a hinge mechanism. At least one of the bottom mold portion and the top mold portion has a molding recess formed therein. The hinge mechanism pivotally attaches the bottom mold portion, the top mold portion and the core retainer bar so that the core retainer bar is intermediate the bottom mold portion and the top mold portion.
    Type: Grant
    Filed: March 16, 2007
    Date of Patent: April 28, 2009
    Assignee: AMS Research Corporation
    Inventors: Robert J. Berkenes, Tom Roy Skoog
  • Patent number: 7525180
    Abstract: Segments formed on a wiring substrate are arranged in a staggered array, and tie bars are provided between the segments.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: April 28, 2009
    Assignee: Panasonic Corporation
    Inventor: Takeo Ochi
  • Patent number: 7517207
    Abstract: An injection molding device (100) includes an upper mold (30), a core insert (50), and a lower mold (70). The upper mold defines a main flow passage (311) and a cylindrical receiving cavity (331) communicating with the main flow passage. The core insert is rotatably received in the cylindrical receiving cavity and defines a secondary flow passage (57) communicating with the main flow passage and at least one upper half molding cavity (531). The lower mold defines at least one lower half molding cavity (711) cooperating with the upper half molding cavity to form a full molding cavity.
    Type: Grant
    Filed: June 7, 2006
    Date of Patent: April 14, 2009
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Ming-Chiang Tsai
  • Patent number: 7497676
    Abstract: A procedure for sequential molding of an assembled object and a machine for the performance of the procedure are provided. A mold has a stationary front part, a movable back part and at least one turnable middle part. After the molding of the first part of an object, the middle part is turned at least once around an axis orthogonal to the moving direction between the front part and the back part, before the molding of the following part of the object takes place. Injection and cooling can take place in the front part and in the back at the same time. In an alternative embodiment, the middle part can be fitted with insulation to maintain a higher temperature between different regions of the mold assembly, making it possible to mold together considerably different materials such as a thermo plastic material and an elastomer, a silicone, or metal and plastic.
    Type: Grant
    Filed: July 31, 2003
    Date of Patent: March 3, 2009
    Inventor: Jes Tougaard Gram
  • Publication number: 20090047376
    Abstract: Disclosed herein is a melt distribution apparatus for a molding system having a geometrically balanced network of runners for distributing a melt of molding material from a melt inlet to a rectangular array of melt outlets having a first number of melt outlets in a first reference direction and a second number of melt outlets in a second reference direction, at least one of the first and the second number being an odd number in excess of three.
    Type: Application
    Filed: August 16, 2007
    Publication date: February 19, 2009
    Inventors: John Robert Galt, Thomas Michael McGinley, Sheldon John Alexander, Christopher J. Brusa, Stephen Daniel Ferenc
  • Publication number: 20090034079
    Abstract: This invention provides a mold with which a two-dimensional subwavelength grating can be produced with a higher percentage transfer by injection molding and a two-dimensional subwavelength grating having a high aspect ratio produced with such a mold. The mold for a fine grating according to the present invention has protrusion parts (107) arranged at an interval on the bottom face (103) of a cavity, wherein the interval is a distance between centers of the protrusion parts and a period of the fine grating smaller than wavelengths of visible lights. In one embodiment, a cross-section of the protrusion parts, parallel to the bottom face of the cavity decreases with height along the protrusion parts and a decreasing rate of the cross-section increases with height along the protrusions.
    Type: Application
    Filed: May 22, 2006
    Publication date: February 5, 2009
    Applicant: Nalux Co., Ltd.
    Inventors: Kazuya Yamamoto, Makoto Okada
  • Patent number: 7462032
    Abstract: A collar for reducing or eliminating leakage between components that moves with respect to each other in the field of injection molding. The collar has an outer portion for receiving an inner portion. The outer portion has a tapered, partial spherical, concave, or convex surface on its inside diameter, and the inner portion has a tapered or partial spherical, convex, or concave surface on its outside diameter. In the preferred embodiment, the inner portion of the collar is operatively assembled into a cavity of the outer portion of the collar, such that the tapered surface of the inner portion is slidably mounted to the tapered surface of the outer portion. The collar is operatively mounted around the outside diameter or circumference of, preferably, a cylindrical device and between two components that move with respect to each other.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: December 9, 2008
    Assignee: Husky Injection Molding Systems Ltd.
    Inventor: Patrice Fabien Gaillard
  • Patent number: 7458794
    Abstract: An injection molding machine is proposed, especially for injection stamping of large-area plastic moldings, that has at least a first injection mold which has two mold halves and which forms a first cavity with a first projected area, and a second injection which has two mold halves and which forms a second cavity with a second projected area, one mold half of each of the two injection molds being fixed on a common carrier unit. A support means for the two injection molds acts in the opening direction. In order to limit the force acting on the respective cavity, the support means, depending on the respective projected area of the respective cavity, partially take up the clamping force so that a holding pressure force acting on the material which has been injected into the respective cavity is set.
    Type: Grant
    Filed: August 4, 2005
    Date of Patent: December 2, 2008
    Assignees: Webasto AG
    Inventors: Ralf Schwaighofer, Andreas Lang, Franz J. Summerer
  • Publication number: 20080292745
    Abstract: Disclosed are a mold gate insert as well as a mold assembly and an injection molding machine incorporating such a mold gate insert. The mold gate insert comprises a base structure formed of a wear resistant material having a first thermal conductivity. The base structure defines a mold cavity, at least in part, a nozzle assembly alignment portion for aligning a nozzle assembly with respect to the base structure, and a gate for communication between the mold cavity and the nozzle assembly. The mold gate insert further comprises a heat dam being completely enclosed by the base structure. The heat dam is made of a material having a second thermal conductivity being less than the first thermal conductivity and arranged within the base structure in proximity to the nozzle assembly alignment portion such that the heat flow between the nozzle assembly and the base structure is impeded. Furthermore, a method of producing the mold gate insert is disclosed.
    Type: Application
    Filed: May 23, 2007
    Publication date: November 27, 2008
    Applicant: HUSKY INJECTION MOLDING SYSTEMS LTD.
    Inventor: Ralf Hubert SHMITZ
  • Publication number: 20080290484
    Abstract: A leadframe strip comprises a plurality of units arranged in a line. Each unit provides two component positions, each having a chip support substrate. The chip support substrates of the two component positions are mechanically linked by at least one support bar. The two component positions of a unit are molded at essentially the same time to produce a plastic housing for a package in each component position. The central portion of the first support bars remains outside of the plastic housing of the two packages.
    Type: Application
    Filed: July 20, 2005
    Publication date: November 27, 2008
    Applicant: INFINEON TECHNOLOGIES AG
    Inventors: Jeffrey Khai Huat Low, Kean Cheong Lee
  • Patent number: 7452202
    Abstract: The invention concerns machinery for molding and assembling of at least two part objects and of plastics, e.g. two ball shells, which can be assembled to a hollow ball, as molding and assembly can take place in the same tool and continuously in the same work procedure. This can be realized by the two turnable middle parts and of the tool, respectively are supplied with the mold cavities and, where the assembling of the part objects and can take place, when the respective tool cavities meet during the rotation, at the same time as the closing of the mold. During the closing there can simultaneously be molded new part objects and in the opposite placed mold cavities and in the two turnable mold part and. If it is necessary in respect of the material or the design of the part objects, there can after the molding of the part objects be applied e.g. heat on the respective boundary surfaces, which shall shape the assembling. This can suitably be fit into the steps, which the turnable middle parts and run through.
    Type: Grant
    Filed: January 30, 2006
    Date of Patent: November 18, 2008
    Inventor: Jes Tougaard Gram
  • Patent number: 7426998
    Abstract: A molding die assembly includes an upper die and a lower die, wherein at least one of the upper and lower dies is provided with a cavity corresponding to the shape of a rubber member to be molded, wherein at least one of the upper and lower dies is provided with an annular projection around a cavity. The distance between the upper and lower dies at the annular projection is made smaller than the distance between the opposed surface portions, other than the cavity, of the upper and lower dies. A rubber member produced by the above mentioned molding die assembly is also provided.
    Type: Grant
    Filed: September 18, 2001
    Date of Patent: September 23, 2008
    Assignee: Daikyo Seiko, Ltd.
    Inventors: Masamichi Sudo, Morihiro Sudo, Kouichi Asai
  • Patent number: 7422425
    Abstract: A knockout drive system for a food patty molding machine includes an electric motor; a rotary-to-linear motion converting apparatus operatively connected to the electric motor; and at least one knockout member operatively connected between the rotary-to-linear motion converting apparatus and the knockout plungers, to reciprocate the knockout plungers. The mold plate and knockout plungers are not mechanically linked to be driven together but are independently driven. The electric motor of the knockout drive system is a servo driven motor wherein the speed, acceleration, deceleration and dwell periods of the knockout plungers can be precisely controlled to be synchronized with the mold plate movements and positions, and for the type of food product, the output rate and the shape of the patties.
    Type: Grant
    Filed: September 16, 2004
    Date of Patent: September 9, 2008
    Assignee: Formax, Inc.
    Inventors: David Hansen, Timothy W. Ring
  • Publication number: 20080203617
    Abstract: Disclosed is a preferred mold design for producing plastic, injection molded preforms, which may be blow-molded into a container of a final, desired shape. A preferred mold includes a combination of hardened material components and high heat transfer material components to provide a mold having good wear characteristics, for a sufficiently long useful life, and to enable rapid cooling of the injected preform, in order to reduce the cycle time of an injection and cooling cycle. In some arrangements, the hardened materials may form a portion of the preform cavity thereby slowing the rate of cooling in those areas and inducing a semi-crystalline or crystalline structure in the cooled preform.
    Type: Application
    Filed: May 5, 2008
    Publication date: August 28, 2008
    Applicant: Advanced Plastics Technologies Luxembourg S.A.
    Inventors: Gerald A. Hutchinson, Robert A. Lee
  • Patent number: 7390184
    Abstract: A co injection manifold assembly for injecting two different materials into a common mold cavity includes a housing that defines a first passage, a second passage and an outlet. The first and second passages communicate with a bore having a valve member for controlling flow of the material through the outlet. A first temperature control element in thermal contact with the first passage and a second temperature control element are in thermal contact with the second passage. Each of the first and second temperature control elements are separately controllable to provide separate temperatures for each of the first and second passages. Separate temperatures in each of the first and second passages provide for the use of materials having dissimilar molten temperatures.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: June 24, 2008
    Assignee: Centoco Plastics Limited
    Inventors: Ed Keck, Dale E. Bridgen
  • Publication number: 20080138561
    Abstract: When a lamp unit is formed by applying a resinous material onto an abutting part between a lamp main body and a lens part through a secondary injection process, a mold receiving portion that is shaped like a concave groove and that is entered by a mold face is formed inside an abutting portion of the lamp main body so as to receive an injection force generated when secondary injection is performed. When the lamp main body is pushed out with the abutting portion and is extracted alone, the groove of the mold receiving portion is prevented from being expanded and deformed by receiving a load generated when pushed out. A reinforcing rib with which the mold receiving portion is filled is formed at a location that corresponds to a part of the mold receiving portion pushed out by a push-out member.
    Type: Application
    Filed: March 9, 2006
    Publication date: June 12, 2008
    Applicant: OSHIMA ELECTRIC WORKS CO., LTD.
    Inventor: Takao Umezawa
  • Publication number: 20080131554
    Abstract: An exemplary mold for manufacturing different-sized plastic frames simultaneously includes a first mold half and a second mold half. The first and second mold halves cooperatively define a first molding chamber and a second molding chamber, and the first molding chamber surrounds the second molding chamber.
    Type: Application
    Filed: December 4, 2007
    Publication date: June 5, 2008
    Inventor: Zhi-Feng Fu
  • Publication number: 20080093772
    Abstract: Method and apparatus for sequentially delivering multiple shots of polymer material to a plurality of mold cavities to form multilayer articles. A first shot of greater than 50% of the total article weight of a first polymer material is simultaneously delivered to a plurality of mold cavities using, at each cavity, a chamber of predetermined volume that is prefilled with the first polymer material. A second shot of no greater than 10% of the total article weight of a second material is simultaneously delivered to all of the cavities beginning subsequent to the step of delivering the start of the first shot delivery step. The second shot of second material is delivered through a manifold channel that fluidly communicates with each cavity, and is injected to all cavities under pressure exerted by a source of the second material that is common to all of the plurality of cavities.
    Type: Application
    Filed: October 6, 2006
    Publication date: April 24, 2008
    Applicant: Graham Packing Company, LP
    Inventors: Ralph Armstrong, Thomas E. Nahill
  • Patent number: 7361012
    Abstract: The present invention is a multiple-level stack mold for balancing the injection of molten plastic from an injection molding machine to a plurality of cavities, at least one cavity on each level of the multiple-level stack mold, for producing plastic parts facing in the same direction. Cavity plates are assembled in the multiple-level stack mold all facing in a first direction, and either core plates or plates having inserts thereon are assembled in the multiple-level stack mold all facing in a second direction. The clamping mechanism simultaneously moves the cavity plates and the core plates into engagement. Molten plastic is then evenly and simultaneously injected and distributed through a plurality of channels and passages, such that the flow of molten plastic is balanced throughout the system. Thereafter, the cavity plates and the core plates are simultaneously separated, thereby allowing removal of the resulting plastic parts, which are all facing in the same direction.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: April 22, 2008
    Assignee: Husky Injection Molding Systems Ltd.
    Inventor: John DiSimone
  • Publication number: 20080088064
    Abstract: A system is provided for forming solid ink sticks comprising a molten ink delivery station for introducing molten ink material into a forming tub to form a solid ink stick. The forming tub includes an open top for receiving the molten ink material and a cavity defining a lower portion of a solid ink stick shape. The system includes a top surface conditioning station for altering the top surface of the ink material introduced into the cavity of the forming tub.
    Type: Application
    Filed: October 11, 2006
    Publication date: April 17, 2008
    Applicant: Xerox Corporation
    Inventors: Brent Rodney Jones, Gustavo J. Yusem, Terry Alan Smith, Frederick T. Mattern, Edward F. Burress, Ernest Isreal Esplin
  • Publication number: 20080075802
    Abstract: A molding system for provided which is configured for molding a substrate comprising a plurality of individual carriers each of which is pre-cut into a shape of a memory card device and connected to a frame of the substrate by narrow tie bars. A molding plate is configured to receive the substrate, and a cavity plate configured to be clamped to the molding plate further comprises a plurality of molding cavities each constructed in the shape of the said carriers. The cavities are operative to create molded packages onto the carrier conforming to a shape of the memory card device without need for further forming of the molded compound after molding. Additionally, a nozzle on the surface of each cavity is operative to introduce molding material into the cavity in a direction that is substantially perpendicular to a plane of the substrate placed on the molding plate.
    Type: Application
    Filed: September 22, 2006
    Publication date: March 27, 2008
    Inventors: Lap Yu Chan, Chun Yu Li, Si Liang Lu, Teng Hock Eric Kuah
  • Patent number: 7338626
    Abstract: A rubber injection molding apparatus and method for simultaneously molding a plurality of work parts (40) in separate molds (30) using a single, vertically oriented press machine (22). A clamping mechanism (52) is responsive to the vertical, reciprocating motion of the press ram (26) for converting the generally vertical motion of the press ram (26) into a horizontal clamping force to squeeze and hold the molds while rubber is injected into their cavities (38). The molds (30) each have two mold halves (32, 34) joining one another along a parting line interface (36) with the mold cavity (38) in between. The mold halves (32, 34) are received in universal carriers (62), which in turn are suspended between and slideable along spaced-apart first (58) and second (60) rails. A large number of mold cavities (38) can be filled simultaneously using a vertically oriented press machine (22).
    Type: Grant
    Filed: October 5, 2006
    Date of Patent: March 4, 2008
    Assignee: Federal Mogul World Wide, Inc.
    Inventor: Gary L. Groth
  • Publication number: 20080029932
    Abstract: An apparatus includes an injection molding machine, a hot runner apparatus attached to the molding machine, and a mold defining a part cavity. The mold is attached to the molding machine and operably engages the hot runner apparatus. The hot runner apparatus has secondary nozzles that engage respective sprue assemblies on the mold for communicating melted plastic material to the mold cavity. Each sprue assembly includes a movably mounted sprue and a stress-reducing mechanism with spring washers that support the sprue to provide sufficient force to eliminate leaking at abutting contact surfaces against the secondary nozzles, but that allow limited movement of the sprue to reduce excessive stress focused on the respective sprues. Since the stress-reducing mechanism is located in the mold, each stress-reducing mechanism can be tailored to the particular needs of that particular mold and the particular melted material being processed.
    Type: Application
    Filed: July 30, 2007
    Publication date: February 7, 2008
    Inventors: John R. Zietlow, William B. Andrews
  • Patent number: 7320589
    Abstract: A method and apparatus for rotating a cross-sectional asymmetrical condition of a laminar flowing material is provided in a hot runner system for supplying a laminar flowing material. The hot runner system has (i) an upstream melt passage, (ii) a pair of intermediary melt passages downstream from the upstream melt passage, and (iii) for at least one intermediary melt passage, an associated pair of downstream melt passages downstream from the at least one intermediary melt passage. The cross-sectional asymmetrical condition of a laminar flowing material is rotated by providing a bending path for orienting at least one path outlet relative to a path inlet to rotate the cross-sectional asymmetrical condition of the laminar flowing material such that the cross-sectional asymmetrical condition is substantially equally divided between the two downstream portions.
    Type: Grant
    Filed: February 26, 2004
    Date of Patent: January 22, 2008
    Assignee: Mold-Masters (2007) Limited
    Inventors: Denis Babin, Gino Colonico
  • Patent number: 7316561
    Abstract: A hot runner molding manifold has a first half having flow grooves, a cover piece having flow grooves complementary to the flow grooves of the first half, and a second half securable to the first half and having a cavity for receiving the cover piece. The flow grooves of the first half and the cover piece form flow channels for distributing molten material from an inlet port to outlet ports. The cover piece is engaged with the first half, for example by welding, to reduce leakage of molten material out of the flow channels. Heater grooves in the first half, second half or both the first and second halves receive one or more heating elements for heating the flow channels.
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: January 8, 2008
    Assignee: National Research Council of Canada
    Inventors: Lijue Xue, Glen Robert Campbell, Manuel J. Gomes
  • Patent number: 7306445
    Abstract: A mold closing device of an injection molding machine for producing plastic parts made of two or more plastic components includes a central mold carrier element which is arranged between two outer mold mounting plates and has two or four opposing mold mounting areas arranged in pairs for affixing two or four mold halves and which is fitted with a turning device supported in a supporting frame. Each of the mold halves of the mold carrier element can be closed against the mold halves of the outer mold mounting plates by a drive mechanism and a mold pressure unit. The outer mold mounting plates are interconnected by columns which extend through the supporting frame for the central mold carrier element. The supporting frame is fixedly connected to the machine frame while the outer mold mounting plate is displaceably supported on the machine frame.
    Type: Grant
    Filed: January 20, 2006
    Date of Patent: December 11, 2007
    Assignee: Krauss-Maffei Kunststofftechnik GmbH
    Inventors: Hans Wobbe, Walter Wohlrab
  • Patent number: 7306454
    Abstract: An injection molding apparatus includes a first, rear-mounted nozzle that is coupled to a manifold for receiving a melt stream therefrom. A second, front-mounted nozzle is coupled to the first nozzle by a nozzle link that is provided between the first and second nozzles. A plurality of gate seals are coupled to a forward end of the second nozzle. The gate seals receive melt from a plurality of melt passages and deliver the melt to a plurality of mold cavities through respective gates. The second nozzle is slidably removable from the first nozzle via the nozzle link to facilitate repair or replacement of the gate seals.
    Type: Grant
    Filed: February 24, 2005
    Date of Patent: December 11, 2007
    Assignee: Mold-Masters Limited
    Inventors: Denis Babin, Terry Schwenk, Robert Sicilia
  • Patent number: 7299544
    Abstract: Disclosed is an apparatus for separating culls coupled to a lead frame when a semiconductor chip is molded. The apparatus includes a lower plate, on which culls coupled to a lead frame are placed, an upper plate pressing culls placed on the lower plate in order to separate culls from the lead frame, a pilot pin installed in the upper plate by passing through the upper plate in order to press culls together with the upper plate when the upper plate presses the culls, and a sensor unit installed adjacent to the movement path of the pilot pin so as to detect a movement of the pilot pin. When culls are separated, faults of articles caused by a molding material insufficiently filled in a mold are checked through detecting a movement of the pilot pin.
    Type: Grant
    Filed: June 24, 2004
    Date of Patent: November 27, 2007
    Assignee: Hynix Semiconductor Inc.
    Inventor: Su Gueon Lee
  • Patent number: 7291305
    Abstract: Servo side shuttle apparatus and method for a molding machine includes structure and/or steps whereby a shuttle plate has a portion always disposed inboard of a perimeter of a first mold half of the molding machine. Drive structure is preferably configured to drive the shuttle plate only in one plane across a molding face of the first mold half. A plurality of gripping structures are coupled to the shuttle plate and are respectively configured to remove a corresponding plurality of molded articles from a corresponding plurality of mold cavities (or cores). The drive structure is also configured to drive the shuttle plate to cause the plurality of gripping structures to be moved in a direction which is diagonal with respect to an array direction of the plurality of mold cavities (or cores).
    Type: Grant
    Filed: May 19, 2005
    Date of Patent: November 6, 2007
    Assignee: Husky Injection Molding Systems Ltd.
    Inventors: James A. Vanderploeg, Jacek Kalemba, Nicholas Seston
  • Patent number: 7287976
    Abstract: Tool insert for the gate of a hot-channel nozzle for an injection molding machine, which tool insert connects to the front (tool-side) part of the hot-channel nozzle and in turn is capable of insertion into a corresponding recess of the tool. The tool insert consists of a front cylindrical fitting piece with flow channel and an accommodating head for the nozzle. The accommodating head is provided at its (per se cylindrical) outer surface with one or more projections capable of cutting, which in the radial direction have an extension that is greater than the radius of the accommodating bore provided in the tool for accommodation of the accommodating head of the tool insert. The projections capable of cutting are designed in such a way that, upon insertion of the tool insert into the said accommodating bore of the tool, a guide grooves are cut into the inner surface of the accommodating bore in the tool.
    Type: Grant
    Filed: November 22, 2004
    Date of Patent: October 30, 2007
    Assignee: Incoe Corporation
    Inventor: Michael Goinski
  • Patent number: 7281922
    Abstract: Disclosed is an injection molding apparatus that includes an extruder configured to produce a continuous flow of molten plastic. The injection molding apparatus also includes a plurality of mold assemblies and a delivery system that provides an uninterrupted transfer of the continuous flow of molten plastic from the extruder to the plurality of mold assemblies. The present invention also includes an process for using the injection molding apparatus that includes forcing a continuous flow of molten plastic into a delivery system and sequentially routing the continuous flow of molten plastic from the delivery system into a plurality of mold assemblies without interruption.
    Type: Grant
    Filed: March 27, 2003
    Date of Patent: October 16, 2007
    Assignee: Commerce Limited Partnership
    Inventors: Paul A. Kruger, Bryan R. Kirchmer
  • Patent number: 7265453
    Abstract: A semiconductor component includes a leadframe, a die, upper and lower body segments encapsulating the die, and dummy segments on the leadframe. The dummy segments are configured to vent trapped air in a molding compound during molding of the body segments, such that corners of the body segments do not include the trapped air.
    Type: Grant
    Filed: September 24, 2004
    Date of Patent: September 4, 2007
    Assignee: Micron Technology, Inc.
    Inventors: Steven L. James, Lori Tandy, legal representative, William D. Tandy, deceased
  • Patent number: 7261553
    Abstract: 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 nozzle system has a sprue bar, a sprue bar extension adjustably connected with the sprue bar, the sprue bar extension having a transfer chamber. The nozzle system also has symmetrically placed inlet apertures located in the sprue bar, the apertures are configured to be in fluid communication centrally with the transfer chamber in the sprue bar extension, and a shut-off surface configured to seal the transfer chamber from the inlet apertures.
    Type: Grant
    Filed: April 8, 2005
    Date of Patent: August 28, 2007
    Assignee: Injectnotech Inc.
    Inventors: Vince Ciccone, John M. Plut, Petrica Maran
  • Patent number: 7255555
    Abstract: An injection molding apparatus for small pitch molding includes a plurality of mold cavities having a small pitch therebetween. The injection molding apparatus includes a manifold for delivering melt to a sub-manifold. The sub-manifold including at least one upstream manifold plate and a downstream nozzle plate. The upstream manifold plate and/or the nozzle plate includes a heater. At least one unheated nozzle is mounted in the downstream nozzle plate for receiving melt from the sub-manifold and delivering the melt to a mold cavity.
    Type: Grant
    Filed: May 3, 2005
    Date of Patent: August 14, 2007
    Assignee: Mold-Masters Limited
    Inventor: Denis Babin
  • Patent number: 7252498
    Abstract: A modular hot runner nozzle having a variable length includes a first nozzle portion and a second nozzle portion provided in series between a manifold and a mold gate of an injection molding apparatus. The first nozzle portion and the second nozzle portion having respective nozzle channels for delivering the melt stream from the manifold to a mold cavity. A nozzle tip is provided at a forward end of the hot runner nozzle. The nozzle tip and the manifold are generally fixed within the injection molding apparatus so that axial thermal expansion is taken up by a telescoping or a slidable connection that is provided between the first nozzle portion and the second nozzle portion.
    Type: Grant
    Filed: April 7, 2004
    Date of Patent: August 7, 2007
    Assignee: Mold-Masters Limited
    Inventor: George Olaru
  • Patent number: 7229276
    Abstract: The present invention provides a manufacturing method for manufacturing an outer tube of an injector having a barrel portion having an excellent circularity, while preventing generation of distortion or warp. A molten resin is injected into a cavity 17 of a metal mold 11 including: a fixed mold 13 having a hole portion 12 having a shape along the outer shape of the injector outer tube 1; a movable mold 14 closing the hole portion 12; and a core 15 inserted into the hole portion 12. A cylindrical vacant portion is provided communicating with a flange forming portion 20 of the hole portion 12. The molten resin R is injected from a sprue 22 and a runner 23 via a submarine gate 24 into the cylindrical vacant portion 21 and the molten resin R is introduced into the cavity 17. The cylindrical vacant portion 21 has a push pin 25. When the molten resin has become half-molten state, the resin in the cylindrical vacant portion is introduced with pressure into the cavity 17 by the push pin 25.
    Type: Grant
    Filed: September 5, 2006
    Date of Patent: June 12, 2007
    Assignee: Kabushiki Kaisha Top
    Inventor: Atsushi Chiba
  • Patent number: 7217112
    Abstract: The invention is a mold and method for using the mold to make a multi-stage intraocular lens. The mold is provided with a gate in fluid communication with a lens portion and/or haptic portion of the mold core. In addition, a gasket is provided around the mold core. As molding material is introduced into the mold via the gate, a vacuum is drawn around and through the gasket to evacuate air trapped in the mold core and to help pull the material through the mold core.
    Type: Grant
    Filed: May 27, 2003
    Date of Patent: May 15, 2007
    Assignee: Faezeh Mona Sarfarazi
    Inventors: Gene Theodore Kyburz, Faezeh M. Sarfarazi
  • Patent number: 7213508
    Abstract: A mold for making an egg-shaped food product includes top and bottom mold halves which cooperate when joined to form an egg-shaped interior mold cavity adapted for receiving a liquid foodstuff. The top and bottom mold halves define a plurality of thermal transit holes passing in registration through the top and bottom mold halves. The thermal transit holes are located adjacent to the interior mold cavity for promoting movement of heat between the interior mold cavity and an environment within which the mold is placed. An injection port is formed in one of the top and bottom mold halves, and communicates with the interior mold cavity for introducing the liquid foodstuff into the interior mold cavity. A fastener joins the top and bottom mold halves together to seal the interior mold cavity.
    Type: Grant
    Filed: November 26, 2002
    Date of Patent: May 8, 2007
    Inventor: Clarence Staton
  • Patent number: 7214053
    Abstract: In a hot channel multiple injection molding die, the molding spaces (15) for the workpieces are each connected to two injection nozzles (9) and the injection nozzles (9) are each connected to two molding spaces (15). The injection nozzles (9) are arranged between the molding spaces (15). Therefore, a small overall height of the lower die part (1) is produced.
    Type: Grant
    Filed: December 21, 2004
    Date of Patent: May 8, 2007
    Assignee: Schöttli AG
    Inventors: Martin Schöttli, Adrian Christinger
  • Patent number: 7204943
    Abstract: This invention relates to a method and apparatus for handling parts ejected from an injection molding machine (10). More particularly, in one aspect, the invention is directed to a system (20) whereby data molded into the ejected part is used to provide useful feedback for the molding process. In another aspect, molded parts formed in a multiple molding die (12) are ejected from the die in a manner to maintain the relative sequential or matrix organization so that useful feedback information can be generated. This system is particularly useful with subsequent machine vision and inspection applications.
    Type: Grant
    Filed: March 14, 2005
    Date of Patent: April 17, 2007
    Assignee: Pressco Technology Inc.
    Inventors: Don W. Cochran, Richard L. Fedor
  • Patent number: 7192269
    Abstract: A device for the injection moulding of moulded bodies made from plastic is disclosed, comprising an injection moulding unit (1) and a tool (2) dedicated thereto. At least two cavities (11, 12), corresponding to the dimensions of the moulded body for production are provided on the tool (2) and the tool comprises at least three pieces (4, 5, 6), which move relative to each other and which lie adjacent to each other on separating planes (9, 10). Each separating plane (9, 10) runs through at least one cavity (11, 12). At least one channel (13) for the introduction of molten plastic is provided in the tool (2), which terminates at one end in the cavities (11, 12) and at the other end thereof at an inlet (14) on the surface of the tool (2), which is connected to the injection moulding unit (1) in the working position.
    Type: Grant
    Filed: April 17, 2002
    Date of Patent: March 20, 2007
    Assignee: Monika Werner
    Inventor: Christoph Jaroschek
  • Patent number: 7186113
    Abstract: A rotary device for a horizontal injection molding machine includes a base and a rotary table supported on the base for rotation about a vertical rotation axis upon operation of a drive. The drive includes a shaft extending downwards from the rotary table and projecting through the base.
    Type: Grant
    Filed: December 7, 2005
    Date of Patent: March 6, 2007
    Assignee: Krauss-Maffei Kunststofftechnik GmbH
    Inventor: Peter Lichtinger