Rotary Mold Support Patents (Class 425/576)
  • Publication number: 20030099738
    Abstract: An injection molding apparatus comprising a rotary table (1) which is rotatable about its axis of symmetry (17) for fixing a plurality of mold halves, wherein for the feed flow, which occurs at the center of the rotary table (1), of media which are capable of flow, there is provided a media coupling (8) which is arranged at a spacing from the rotary table and which has a stationary part and a part rotatable together with the rotary table, and wherein the media coupling (8) is arranged eccentrically with respect to the axis (17) of the rotary table (1) and that provided between the media coupling (8) and the rotary table (1) is a connecting bar (14) provided at both ends with universal joints (15).
    Type: Application
    Filed: November 21, 2002
    Publication date: May 29, 2003
    Inventor: Klaus Denkmaier
  • Publication number: 20030094732
    Abstract: A support for rotating molds used in multi-shot injection molding provides for platen mounting of a support track that may extend beneath the molds to support the rotating mold portion. The extensible track provides a telescoping configuration that allows a long support span independent of the mold width improving mold stability and increasing potential mold separation for easy access to the mold portions.
    Type: Application
    Filed: November 16, 2001
    Publication date: May 22, 2003
    Inventors: Dennis J. Payette, John J. Hahn, Brian R. Hartlmeier
  • Patent number: 6558149
    Abstract: A holding device (1) for injection molding mold halves (61.2) or their holders contains two displacement units (2.1, 2.2), on each of which a rotation unit (4.1, 4.2) is attached. On each rotation unit (4.1, 4.2) there are holders (5.1, 5.2). Into the space (d) between the two holders (5.1, 5.2) a die holder designed as a prism-shaped rotating block can be inserted. The die holder in the holding device (1) can be displaced in one direction (z) and can be rotated around a displaceable axis (42.1, 42.2), which is vertical to the one direction (z). The displacement units (2.1, 2.2) can be displaced relative to one another to permit rapid and easy changing of injection molding molds (62.1).
    Type: Grant
    Filed: July 24, 2000
    Date of Patent: May 6, 2003
    Assignee: Foboha GmbH
    Inventors: Werner Bodmer, Rainer Armbruster
  • Patent number: 6555037
    Abstract: A method of continuously forming integrally molded structures includes the steps of rotating a plurality of independently movable multisection mold assemblies about a plurality of axes, successively flowing a plurality of polymerizable mixtures over surfaces of each enclosed mold cavity while selectively heating mold sections thereof in a preselected heating profile and monitoring the flowing of each mixture, the heating of the mold sections and the formation of resins therefrom. The monitored mixture flowing, the mold section heating and the formation of each resin are coordinated with each monitored axis rotation. The molded structure is removed after it has achieved structural integrity within the mold cavity, and the steps are repeated to form a multiplicity of the integrally molded structures on a continuing basis. Also, multiaxis molding apparatus for conducting the above method.
    Type: Grant
    Filed: October 19, 2000
    Date of Patent: April 29, 2003
    Inventor: LeRoy Payne
  • Publication number: 20030077354
    Abstract: A rotary device for a horizontal injection molding machine is configured in the form of a module frame which includes a base plate and a turntable rotatably mounted on the base plate. Drives are provided to move the base plate in longitudinal direction and to rotate the turntable. A fixed mold mounting plate of the injection molding machine can be mounted on a mounting structure of the module frame, whereas a moveable mold mounting plate is received in guides along the sides of the module frame.
    Type: Application
    Filed: October 22, 2002
    Publication date: April 24, 2003
    Applicant: KRAUSS-MAFFEI KUNSTSTOFFTECHNIK GMBH
    Inventor: Walter Wohlrab
  • Publication number: 20030038407
    Abstract: A method of making a painted part out of molded thermoplastic material, the method comprising the steps consisting in:
    Type: Application
    Filed: October 11, 2002
    Publication date: February 27, 2003
    Applicant: L'OREAL
    Inventor: Alain Bethune
  • Patent number: 6503075
    Abstract: The present invention relates to stack mold carriers in an injection molding machine with a rotating turret. Services to the rotating turret are provided by a rotary union attached to the translating mold carrier at the turret's axis of rotation. Hence, services such as oil, water, air and electrical power are provided to the rotating turret thereby allowing the turret to rotate in either direction. The rotating turret is attached to linkages which open and closed the molds through connection to a moving and a stationary platen which interface with the rotating turret to form molded articles therein.
    Type: Grant
    Filed: August 24, 2000
    Date of Patent: January 7, 2003
    Assignee: Husky Injection Molding Systems, Ltd.
    Inventors: Robert D Schad, Bruce F Coxhead
  • Publication number: 20030001311
    Abstract: Sleeve molding apparatus and methods for making multi-layer injection molded plastic articles in successive mold cavities. In a first molding step, an inner sleeve is molded on a core in a first mold cavity, which may comprise a full body length sleeve or only a partial sleeve, such as an upper neck finish portion. The sleeve and core are withdrawn from the first mold cavity while the sleeve is still warm, and transferred without substantial delay to a second mold cavity for injection molding an outer layer which bonds to the inner sleeve. By transferring the sleeve at an elevated temperature into the second mold cavity, an improved bond is formed between the inner sleeve and outer layer which resists separation during a later reheat stretch blow molding step, and/or in use of the resulting article. In a preferred embodiment, a pasteurizable beer container is provided having a finish-only sleeve of a PEN polymer.
    Type: Application
    Filed: August 2, 2002
    Publication date: January 2, 2003
    Applicant: Continental PET Technologies, Inc.
    Inventors: Wayne N. Collette, Suppayan M. Krishnakumar
  • Publication number: 20020172736
    Abstract: An injection press for molding pieces of elastomer comprises a fixed platen, a moving platen, and a turret carrying a plurality of molds, the turret and the molds being interposed between the two platens so as to be capable of being clamped between them in order to close the molds, and the turret being mounted to rotate so as to move each mold sequentially between an injection station, vulcanization stations, and an unmolding station. The press also comprises an injector device adapted to inject elastomer into each mold while it is in the injection station, heater devices adapted to heat the molds, and a control device adapted to move the moving platen and to cause the turret to turn.
    Type: Application
    Filed: April 29, 2002
    Publication date: November 21, 2002
    Inventors: Jean-Pierre Chasles, Alain Vasseur, Patrick Vanhille, Philippe Blot
  • Publication number: 20020164394
    Abstract: The present invention relates to a machine for injection molding of rubber products, comprising a plurality of molding units to be operated separately for carrying out a molding cycle. The molding units are mounted on a common support and each unit receives the rubber blend to be used in molding through a duct branched off from a channel fed by a common injection unit. The branched-off feeding ducts of the units are intercepted by a dispensing element moved step by step to sequentially open a predetermined number of the branched-off ducts, so that the corresponding molding units are driven to receive the rubber to be introduced into the mold for execution of molding.
    Type: Application
    Filed: January 29, 2002
    Publication date: November 7, 2002
    Applicant: Rutil S.r.l.
    Inventor: Gianni Coscia
  • Patent number: 6468458
    Abstract: A process for formation of a plastic composite includes providing a two part mold system wherein one of the parts is moveable and includes cavities and the other of the parts is stationary and includes cores each having less mass and sequentially moving the moveable mold part with respect to the stationary mold part to form an injection volume between each of said mold cavities of variable capacity.
    Type: Grant
    Filed: October 23, 1998
    Date of Patent: October 22, 2002
    Assignee: Textron Automotive Company Inc,
    Inventors: Terry L. Anderson, Nelson J. Morren, Glen J. Jeffrey
  • Patent number: 6447280
    Abstract: An injection mold for manufacturing two-component elongated members includes first and second mold cavity members mounted for relative movement toward and away from one another through an open central frame which carries a rotatable central mold plate in it. The central mold plate is configured to engage the parts of the first and second mold cavity members, which do not directly engage one another through the opening in the frame. When the mold is opened, the rotatable mold plate in the central frame member is rotated to place a pre-form on the opposite side of the mold for injection of a second component in the opposite side of the mold. The central frame moves one-half the distance between the first and second mold cavity members; and the rotatable mold plate is rotated 180° in each cycle.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: September 10, 2002
    Assignee: Tech Mold, Inc.
    Inventor: Tod M. Grimm
  • Patent number: 6439872
    Abstract: There is provided an apparatus for manufacturing lenses for vehicle lamps, wherein the lenses are formed from at least first and second types of synthetic resins by molding the first and second synthetic resins integrally with each other. The apparatus includes a first mold having a common mold and a first stationary mold and defining a first cavity in which the first synthetic resin is injection molded, and a second mold constructed from the common mold and a second stationary mold and defining a second cavity in which the first synthetic resin and the second synthetic resin are molded integrally with each other with the first synthetic resin being contained within the second cavity. A partition wall is provided on the first stationary mold in such a manner as to protrude therefrom for preventing the first synthetic resin from intruding into any place other than the first cavity when the first mold is closed.
    Type: Grant
    Filed: September 15, 2000
    Date of Patent: August 27, 2002
    Assignee: Koito Manufacturing Co., Ltd.
    Inventors: Mitsuteru Yoshinaga, Makoto Sano
  • Publication number: 20020101005
    Abstract: The invention is related to a device (1) and to a method for the injection molding of articles (25) with several plastic material components. This device (1) comprises a first half mold arranged as fixed (3), a second half-mold (6) arranged as movable relative to the first half-mold (3) for the purpose of opening and closing the device (1). In addition, the device (1) comprises at least two further half-molds (10, 11), which are arranged as jointly movable relative to the first and second half-molds (3, 6), and which in the closing position of the device (1) are situated between the first and the second half-molds (3, 6), so that in two parting planes (32, 33), namely in a first and in a second parting plane (32, 33), cavities (20, 21) are formed. The two further half-molds (10, 11) arranged as jointly movable comprise means (22), which in the case of an opened device (1) serve for the transportation of the article (25) out of a first cavity (21.1) into a second cavity (21.
    Type: Application
    Filed: January 28, 2002
    Publication date: August 1, 2002
    Applicant: FOBOHA GmbH
    Inventors: Werner Bodmer, Rainer Armbruster
  • Publication number: 20020089088
    Abstract: In a method of making plastic articles with embossed pattern, a plastic material is injection-molded in a cavity of a clamping unit of an injection molding machine to form an injection-molded plastic article. A pattern is embossed from a foil strip onto a previously injection-molded plastic article to form a finished plastic product with embossed pattern, whereby the embossing step is decoupled from the injection molding step and carried out separately from a clamping step of the clamping unit.
    Type: Application
    Filed: November 6, 2001
    Publication date: July 11, 2002
    Inventors: Peter Ils, Peter Lichtinger, Gunter Prautzsch, Timo Gunzel, Wilhelm Pfister, Jurgen Schreyer, Jurgen Hackert
  • Publication number: 20020081350
    Abstract: A rotate mechanism includes a fixed frame unit, a rotating frame unit, a first bearing, and a prime mover. The rotating frame unit is rotatably coupled to the fixed frame unit and rotates about an axis. The rotating frame unit includes a first surface for receiving a machine tool element to be rotated. The first bearing is configured to exert an axially outward force on the rotating frame unit. The first bearing rotates about an axis that extends in substantially perpendicular to an axis of rotation of the rotating frame unit. The first bearing is axially movable within a cavity of at least one of the rotating frame unit and the fixed frame unit. The prime mover is coupled to the rotating frame unit to effectuate rotational movement thereof.
    Type: Application
    Filed: September 13, 2001
    Publication date: June 27, 2002
    Inventors: Jack E. Elder, Scott K. Wilson
  • Publication number: 20020079619
    Abstract: A method and an apparatus for injection-molding plastic material articles, in particular articles consisting of a plurality of components, are disclosed. An injection molding machine has a mold, e.g. a stack mold. The mold is adapted to be temperature-controlled differently in different areas of the mold. A center platen of the stack mold on a first side thereof cooperates with a first mold portion via a first separation plane and, on a second side thereof cooperates with a second mold portion via a second separation plane. The stack mold is provided with a plurality of first, smaller cavities as well as with a plurality of second, larger cavities. Means are provided for injection-molding the first components of the plastic material article in first cavities located in the first separation plane and injection-molding the second components on the first components within the second cavities.
    Type: Application
    Filed: July 12, 2001
    Publication date: June 27, 2002
    Inventor: Richard Herbst
  • Publication number: 20020071886
    Abstract: A molding machine comprising an injection portion with an injection nozzle which injects a molding material, a turntable comprising a rotation driving apparatus, a plurality of molds placed along a peripheral edge of the turntable, an attaching and detaching station, an injection station and a plurality of curing stations. Each mold comprises a material receiving port communicating with the injection nozzle when the mold is positioned at the injection station. Each mold further comprises a mechanism which close the material receiving port so as to prevent the molding material from flowing backward when the mold is separated from the injection nozzle. The molds are transferred by rotation of the turntable to each station one by one. Primary formed products are attached to the molds at the attaching and detaching station, injected at the injection station, cured to =be second formed products at the curing stations and finally took out at the attaching and detaching station.
    Type: Application
    Filed: September 26, 2001
    Publication date: June 13, 2002
    Inventors: Tomio Asai, Norio Kawamura, Yoshiyuki Akiyama, Hiroshi Murashita, Junichi Hamamoto, Toshihiro Kitagawa
  • Patent number: 6402504
    Abstract: A rotatable platen assembly is adapted to support a mold used in multi-shot plastic injection molding. The platen assembly includes a non-rotatable machine platen having a central bore formed therethrough. A non-rotatable base plate is connected to the machine platen, the base plate having a central opening aligned with the central bore of the machine platen. A rotating plate is adapted to retain a mold thereon. The rotating plate is provided with a rotatable center axle passing through the central opening in the central bore, and a gear mounted for rotation on the axle. A rack system is engageable with the gear for moving the mold rotating plate between a starting position and a finishing position. A shock absorber arrangement is mounted externally of the base plate for dampening the momentum of the rotating plate between the starting position and the finishing position.
    Type: Grant
    Filed: June 7, 2000
    Date of Patent: June 11, 2002
    Assignee: MGS Mfg. Group, Inc.
    Inventors: John J. Hahn, Theodore B. Lemke, Randy J. Krell
  • Patent number: 6386849
    Abstract: The invention is a mold apparatus for making multi-component products. The apparatus includes an elongate turret, a plurality of product connection pairs attached on opposite sides of the turret, a first mold disposed proximate to the turret and a second mold disposed on the opposite side of the turret. The first mold has a plurality of cavities for molding a first molded layer of the multi-component product, and the second mold has cavities for molding a second layer onto the first molded layer. The turret is rotatable between the first mold and the second mold by rotation about its longitudinal axis of the turret.
    Type: Grant
    Filed: December 6, 1999
    Date of Patent: May 14, 2002
    Assignee: Caco Pacific Corporation
    Inventors: Charles Kroeger, Gary Unitt
  • Publication number: 20020051830
    Abstract: To provide a moldingl die apparatus wherein simultaneous molding of two or more molded products of different sizes can be carried out. An apparatus for molding of resin products includes a pair of mutually confronting metal dies (30, 50) that are moveable toward and away from each other, molding surfaces or portion (32 (34), 52, (54)) that cooperate in forming mold cavities and resin path (70) that lead injected molten resin from an injection machine to the cavities provided in the metal dies. Two or more cavities C16, C26 of different capacities are provided in the metal dies (30, 50). Simultaneous molding of two or more different resin products (16, 26) with the single molding apparatus increases the production efficiency of the resin products and reduces the production costs. Further, the installation space for the molding equipment, such as the molding apparatus, can be reduced.
    Type: Application
    Filed: December 9, 1999
    Publication date: May 2, 2002
    Inventors: OSAMI TAKIKAWA, MAKOTO SANO
  • Publication number: 20010051193
    Abstract: A rotary device (4) for a horizontal injection molding machine for rotating mold portions or molded articles, disposed between the mold mounting plates, about a vertical axis. The invention is further characterized in that the rotary device (40) is supported completely separated from the tie bars (5-8) exclusively on the machine bed (2). The rotary device (4) includes hereby a base plate 914) supported on the machine bed, a rotary table (13) supported on the base plate for rotation about a vertical axis, as well as drive means for turning the rotary table. The base plate (14) has a substantially H-shaped configuration, with the lateral legs (15-18) of the H resting on the machine bed (2). Turning is realized by gear (44) driven by an electric motor or hydraulic motor (49) and meshing in a ring gear (43) on the rotary table (13). The rotary table (13) is mounted on a pivot pin (19) which extends through the base plate (14) and is rotatably supported in addition by a stator (2) arranged below the base plate.
    Type: Application
    Filed: April 6, 2001
    Publication date: December 13, 2001
    Inventor: Peter Lichtinger
  • Patent number: 6299431
    Abstract: The present invention is related to a rotary cooling station to be used in conjunction with a high output injection molding machine and a robot having a take-out plate. More particularly, the present invention teaches a high speed robot that transfers warm preforms onto a separate rotary cooling station where they are retained and internally cooled by specialized cores. The preforms may also be simultaneously cooled from the outside to speed up the cooling rate and thus avoid the formation of crystallinity zones. Solutions for the retention and ejection of the cooled preforms are described. The rotary cooling station of the present invention may be used to cool molded articles made of a single material or multiple materials.
    Type: Grant
    Filed: May 14, 1999
    Date of Patent: October 9, 2001
    Assignee: Husky Injection Molding Systems Ltd.
    Inventor: Witold Neter
  • Patent number: 6296792
    Abstract: Multiaxis rotational molding apparatus (11) includes a plurality of spaced generally horizontally oriented arm members (17-20) each having one end (21) extending from an upstanding frame section (22) with one mold assembly (32-35) rotatably mounted adjacent a free end thereof. Each mold assembly includes a plurality of separable mold sections (36) including plate sections (38). A plurality of movable elongated mixing chambers (47-49), each including a plurality of adjacent axially aligned rotatable driven mixing sections (52-54). A control portion (15) includes an indexing mechanism (67, 68) sequentially orienting a dispenser of each mixing chamber with each mold assembly to control formation of molded structures continuously in a preselected multiaxis molding profile. Also, a method of forming molded structures with the molding apparatus is disclosed.
    Type: Grant
    Filed: October 31, 2000
    Date of Patent: October 2, 2001
    Inventor: LeRoy Payne
  • Patent number: 6290486
    Abstract: Molded plastic articles are prepared in accordance with the process and apparatus of the present invention. A first mold cavity is filled via a feeding unit in engagement with a first mold cavity with plastic containing a volume expanding agent, the filled first mold cavity and feeding unit are moved away from each other and a second mold cavity and the feeding unit are moved into engagement with each other, the second mold cavity is filled with plastic containing a volume expanding agent via the feeding unit, the plastic is expanded in the first mold cavity via the volume expanding agent while the second mold cavity is in engagement with the feeding unit, and the expanded article is ejected from the first mold cavity.
    Type: Grant
    Filed: May 16, 2000
    Date of Patent: September 18, 2001
    Assignee: Husky Injection Molding Systems Ltd.
    Inventor: Michael Koch
  • Patent number: 6247913
    Abstract: A molding machine includes a drive unit which, in turn, includes comprises a rotary motor and a thrust generator. The rotary motor includes a shaft which is rotatable and axially movable. The shaft is connected to a movable body so as to rotate the movable body by the rotary motor and to reciprocate the movable body by the thrust generator. Thus, the drive unit is substantially composed of a single rotary motor which functions for rotating and reciprocating the movable body, such as a screw.
    Type: Grant
    Filed: April 29, 1999
    Date of Patent: June 19, 2001
    Assignees: Nissei Plastic Industrial Co., Ltd., Nisso Electric Company
    Inventors: Hiroshi Shibuya, Satoshi Nishida, Tokuzou Sekiyama, Satoru Matsubara, Atsushi Koide
  • Patent number: 6241509
    Abstract: Construction includes a stationary platen and a movable platen movable with respect to the stationary platen from a closed position in clamping engagement with the stationary platen to an open position spaced from the stationary platen. At least two tiebars are provided connecting the stationary platen to the movable platen, and a stroke cylinder within each tiebar operative to move the platens from an open to closed position and from a closed to open position. Clamping means are provided to clamp the platens together in the closed position, and including means carried by the tiebars to engage the clamping means.
    Type: Grant
    Filed: July 12, 2000
    Date of Patent: June 5, 2001
    Assignee: Husky Injection Molding Systems Ltd.
    Inventors: John Galt, Frank E. Goetz, Ronald Ing, William James Jacovich, Martin Richard Kestle
  • Patent number: 6179605
    Abstract: A machine for injection molding of plastic articles comprising a rotatable wheel having a plurality of molds mounted along the periphery thereof with spacers mounted therebetween, wherein each mold comprises two opposing sections pivotally attached to each other such that the mold opens radially towards the periphery of the wheel. The periphery of the molds and spacers are machined to a precise radius to collectively form a continuous circle. Each mold comprises a plurality of cavities wherein each cavity communicates with the exterior of the mold along the periphery thereof through an opening formed at the mold parting line. A stationary injection nozzle is machined to precisely conform to the periphery of the circular structure and to ride along the surface thereof as the wheel is rotated.
    Type: Grant
    Filed: November 12, 1998
    Date of Patent: January 30, 2001
    Assignee: C & L Plastics, Inc.
    Inventors: Jeffrey E. Littleton, Harry E. Littleton
  • Patent number: 6168416
    Abstract: A rotatable turret block is mounted on an index molding machine. The turret block includes at least one mold core for forming molded articles thereon at least one face of the rotatable turret block. The molded articles are transferred from the mold cores to spaced track members for retention and cooling thereon, and the cooled molded articles removed from the track members.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: January 2, 2001
    Assignee: Husky Injection Molding Systems Ltd.
    Inventor: John Galt
  • Patent number: 6143225
    Abstract: The present invention relates to a device for unloading and cooling molded parts from an injection molding machine having an index turret block rotatable about a central axis. The device comprises a cooling turret block rotatable about an axis substantially parallel to the central axis, which cooling turret block has a plurality of faces. At least one of the faces includes a plurality of nozzles for applying a cooling fluid to surfaces of the molded parts while the molded parts are resident on the index turret block. At least two of the other faces of the cooling turret block include a plurality of receiving tubes for receiving molded parts from the index turret block for further cooling. The cooling turret block of the present invention is capable of cooling multiple sets of molded parts.
    Type: Grant
    Filed: March 3, 1999
    Date of Patent: November 7, 2000
    Assignee: Husky Injection Molding Systems Ltd.
    Inventors: Robert Domodossola, Ronald Ing, John R Galt, William Jacovich, Steve Saggese
  • Patent number: 6139305
    Abstract: An injection molding apparatus capable of producing injection molded articles from at least two plastic melts, includes an additional mold mounting device between a fixed mold mounting plate and a movable mold mounting plate that is traversed along four essentially horizontal tie rods. The additional mold mounting device is also pivotable around a rotational axis aligned perpendicular to the longitudinal axis of the tie rods, and carries additional mold halves that cooperate with the mold halves mounted on the mold mounting plates on at least two side surfaces that are aligned with a spacing parallel to each other and relative to the rotational axis. The additional mold mounting device comprises upper and lower support blocks that are arranged at a spacing relative to each other in an essentially vertically aligned plane, with each support block being guided on at least of the two tie rods. A friction or pivot bearing is provided for vertically aligned pivots of a prismatic mold core support.
    Type: Grant
    Filed: August 3, 1998
    Date of Patent: October 31, 2000
    Assignee: Ferromatik Milacron Maschinenbau GmbH
    Inventor: Wolfgang Nesch
  • Patent number: 6129883
    Abstract: The present invention relates to an improved injection molding machine and process. The injection molding machine includes a first mold half with at least one mold cavity or mold core and a rotatable turret means rotatable on an axis for rotating a pair of mating mold halves into alignment with the first mold half. Each mating mold half includes at least one mold core or mold cavity matable with the first mold half for forming a mold for forming at least one molded article. The turret block is movable so that a first one of the mating mold halves can be brought into contact with the first mold half. The machine also includes an injection system for injecting molten material into the mold to form the molded article(s). After the injection cycle is completed, the turret block with the molded article(s) thereon is moved away from the first mold half and is rotated by 180 degrees to align a second one of the mating mold halves with the first mold half and to bring the molded article(s) to an ejection position.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: October 10, 2000
    Assignee: Husky Injection Molding Systems Ltd.
    Inventors: William J Jacovich, John Robert Galt, Ronald Ing
  • Patent number: 6123535
    Abstract: A molding apparatus and method of use thereof. The molding apparatus has a stationary mold base, and at least one moveable mold core rotatable into and out of a facing relationship with the stationary mold base. When the moveable mold core is in its closed position, it cooperates with the stationary mold base to define a mold cavity. The mold base may be shaped so as to aid in forming a part, or to hold a sheet of material onto which molding material is to be deposited so as to encapsulate the part on one or more edges or surface regions. Structure may also be encapsulated onto the surface of the material during the molding operation.
    Type: Grant
    Filed: July 22, 1997
    Date of Patent: September 26, 2000
    Assignee: Libbey-Owens-Ford Co.
    Inventors: Charles E. Ash, Gary W. Bernier, David W. Lahnala, H. Richard Voght
  • Patent number: 6123538
    Abstract: The present invention relates to a device for cooling and removing molded parts, which device has particular utility with an index molding machine having a rotary turret block with at least two movable mold halves thereon. The device includes a carrier plate having a plurality of tubes for receiving and cooling at least one molded part mounted to a first surface thereof and a plurality of blowing tubes for applying a cooling fluid to external surfaces of at least one molded part, while the at least one molded part is positioned on one of the faces of a rotary turret block, mounted to a second surface of the carrier plate. The device further has an actuation system for moving the carrier plate between a first position where the receiving and cooling tubes are aligned with the at least one molded part and a second position where the at least one molded part is being cooled within the receiving and cooling tubes and the cooling fluid applying blowing tubes are positioned adjacent a respective turret block face.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: September 26, 2000
    Assignee: Husky Injection Molding Systems Ltd.
    Inventor: Jerzy Kutalowski
  • Patent number: 6099293
    Abstract: A process and apparatus for forming a seal between a filter cartridge wall and a pleated filter disposed within the cartridge having a support for rotating the cartridge. A nozzle is connected to a source of sealant for injecting sealant into an area between the wall of the cartridge and the filter media. A valve connected to the nozzle valves sealant to the nozzle and has a draw back feature after a desired amount of sealant is injected. The method for sealing the filter media to the wall of the cartridge includes rotating the filter cartridge while disposing a nozzle into the interior of the cartridge and injecting a sealant through the nozzle controlled by a valve. The valve draws flow backwardly from the nozzle at the termination of the injection of sealant.
    Type: Grant
    Filed: April 15, 1998
    Date of Patent: August 8, 2000
    Assignee: Bacou USA Safety, Inc.
    Inventors: John J. Kern, Anthony V. Osborne
  • Patent number: 6030557
    Abstract: A method of continuously forming an integrally molded structure in a multiaxis rotational molding operation includes the steps of rotating a multisection mold assembly (33) about at least three axes. A first freshly formed polymerizable mixture is flowed over surfaces of an enclosed mold cavity (36) within the multisection mold assembly. The flowing of the first mixture over the mold cavity surfaces and formation of a first resin (74) therefrom is monitored. A freshly formed rapidly gelling second polymerizable mixture (75) is flowed into the mold cavity to deposit a preselected quantity thereof into contact with a first preselected area of the first resin. A portion of the deposited second mixture is drawn as it is gelling toward another preselected area remote from the first preselected area to form therefrom a continuous support member (92) with structural integrity extending between the preselected areas of the first resin.
    Type: Grant
    Filed: September 9, 1996
    Date of Patent: February 29, 2000
    Inventor: LeRoy Payne
  • Patent number: 6024558
    Abstract: The present invention relates to an improved drive system for rotatable members in molding machines. The drive system comprises at least one frameless, brushless electric motor having a stator mounted to the machine and a rotor directly coupled to the rotatable member. Each rotor is coupled to the rotatable member so that the axis of rotation of the rotor is concentric to the axis of rotation of the rotatable member.
    Type: Grant
    Filed: May 4, 1998
    Date of Patent: February 15, 2000
    Assignee: Husky Injection Molding Systems Ltd.
    Inventors: Peter A. Looije, Ronald Ing, William Jacovich
  • Patent number: 6012914
    Abstract: A rotatable platen for supporting a plastic molding device includes a bottom clamp plate enclosing a central pillar supporting an axially rotating gear. The rotating gear turns a vertical shaft attached to a top of the gear. A longitudinal slot in the clamp plate receives a rack assembly that engages the rotating gear and is driven by a hydraulic piston. The vertical shaft passes through a wear plate, a lower rotating plate, a thrust bearing, an intermediate housing enclosing a portion of the thrust bearing and the top of the shaft turns an upper rotating plate that engages the molding device.
    Type: Grant
    Filed: May 12, 1998
    Date of Patent: January 11, 2000
    Inventor: Demetre Loulourgas
  • Patent number: 5975872
    Abstract: A rotary injection molding apparatus includes a stationary frame and a rotatable platform disposed on the frame. The apparatus includes a drive assembly for rotatably driving the platform. The drive assembly includes an indexing motor having a rotating portion that is directly and rigidly operably connected to the platform to define a one-to-one relation between rotation of the motor rotating portion and the platform. The apparatus includes a plurality of mold blocks located on the platform and injection means disposed above the platform for injecting a moldable material into the mold blocks. The apparatus includes a lift portion operably connected to the indexing motor and actuatable to raise and lower the rotatable platform relative to the injection means.
    Type: Grant
    Filed: February 23, 1998
    Date of Patent: November 2, 1999
    Assignee: Illinois Precision Corp.
    Inventors: Richard T. Raines, Michael J. Watkins
  • Patent number: 5922369
    Abstract: A synthetic resin layered lens for a vehicle lighting device in which an upper lens layer is disposed on a lower lens layer thereby forming a layered lens of integral construction. The lower lens layer is molded in a state that the surface of the lower lens layer where it contacts the upper lens layer, faces the injection gate. The gate scar of the lower layer is thus hidden by the upper layer.
    Type: Grant
    Filed: September 8, 1997
    Date of Patent: July 13, 1999
    Assignee: Koito Manufacturing Co., Ltd.
    Inventors: Hirokazu Yanagihara, Shiro Takezawa
  • Patent number: 5882553
    Abstract: A multi-colored lens assembly is produced in a multi-station injection molding apparatus having non-indexing ejector halves and indexing cover halves. Material is shot on an unexposed illumination side of the lens assembly from valve gated nozzle drops contained in the non-indexing ejector halves thereby producing a viewing side of the lens assembly free of surface blemishes and surface stress defects. Lens assemblies are retained in the indexing cover halves by retention mechanisms provided to overlap peripherally extreme features of the lens assemblies. Lens assemblies are affirmatively released from the non-indexing ejector halves by ejection pins or blades simultaneously with parting of the mold halves.
    Type: Grant
    Filed: June 9, 1997
    Date of Patent: March 16, 1999
    Assignee: Guide Corporation
    Inventors: Philip Alan Prophet, John Eric Hall
  • Patent number: 5855935
    Abstract: Injection moulding apparatus consists of a rotary carrier (11) which transports a number of mould sets (14,15) in turn through an injection station (46), cooling stations (35) and a mould opening station (27). The injection body (62) is upwardly arranged, and there is a positioning device (71-74) for adjusting the position of the injection head (60) when in an injection position and in a withdrawn position, and a further positioning device (65,66) for moving the injection head (60) relative to the injection body. The clamping device (47) at the injection station and the cooling device (36,37) at the cooling station can also be used as heat transfer devices. The sprue formed between the mould cavity (17) and the inlet (18) of the mould set can be severed while the mould set is closed. During transfer between the injection station and the opening station, tools (14) and (15) of the mould set are held in a closed condition by connectors (16) and retaining elements (21,22) which are part of the mould set.
    Type: Grant
    Filed: November 13, 1995
    Date of Patent: January 5, 1999
    Inventors: David Rudy Brent, Gerald Dennis Day
  • Patent number: 5837301
    Abstract: An injection molding machine of the present invention includes a first mold half having one of at least one mold cavity and at least one mold core and a rotatable turret block rotatable on an axis for rotating at least one movable mold half thereof into alignment with the first mold half. Each of the movable mold halves include one of at least one mold cavity and at least one mold core matable with the first mold half for forming a mold for molding a molded article. The rotatable turret block is further for clamping the movable mold halves and the first mold half together. The machine further includes a mechanism for moving the rotatable turret block relative the first mold half and a mechanism for rotating the rotatable turret means, wherein the mechanism for moving is linked to the mechanism for rotating, and a first injector for injecting melt into the at least one mold cavity.
    Type: Grant
    Filed: April 28, 1997
    Date of Patent: November 17, 1998
    Assignee: Husky Injection Molding Systems Ltd.
    Inventors: Robin A. Arnott, William James Andrew Jacovich
  • Patent number: 5830404
    Abstract: An injection molding machine of the present invention includes a first mold half having one of at least one mold cavity and at least one mold core and a rotatable turret block rotatable on an axis for rotating a plurality of movable mold halves thereof into alignment with the first mold half. Each of the movable mold halves include one of at least one mold cavity and at least one mold core matable with the first mold half for forming a mold for molding a molded article. The rotatable turret block is further for clamping the movable mold halves and the first mold half together. The machine further includes a mechanism for moving the rotatable turret block relative the first mold half a first injector for injecting melt into the at least one mold cavity.
    Type: Grant
    Filed: September 18, 1997
    Date of Patent: November 3, 1998
    Assignee: Husky Injection Molding Systems Ltd.
    Inventors: Robert Schad, Robin Arnott
  • Patent number: 5817345
    Abstract: An injection molding machine of the present invention includes a first mold half having one of at least one mold cavity and at least one mold core and a rotatable turret block rotatable on an axis for rotating a plurality of movable mold halves thereof into alignment with the first mold half. Each of the movable mold halves include one of at least one mold cavity and at least one mold core matable with the first mold half for forming a mold for molding a molded article. The rotatable turret block is further for clamping the movable mold halves and the first mold half together. The machine further includes a mechanism for moving the rotatable turret block relative the first mold half, a first injector for injecting melt into the at least one mold cavity, to form an injected article and a second injector for injecting melt into the at least one mold cavity over the injected article to form an injected article having at least two layers.
    Type: Grant
    Filed: December 23, 1996
    Date of Patent: October 6, 1998
    Assignee: Husky Injection Molding System Ltd.
    Inventors: Michael Koch, Robert Schad, Robin Arnott
  • Patent number: 5773049
    Abstract: A two-layer foam injection molding machine for molding foam moldings in which a surface member composed of a foam layer and a skin layer on the surface of the foam layer is laminated in a body on a core member made from a hard resin.
    Type: Grant
    Filed: June 27, 1996
    Date of Patent: June 30, 1998
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Masahiko Kashiwa, Tsutomu Nagaoka, Naoki Takeuchi
  • Patent number: 5728409
    Abstract: An injection molding machine of the present invention includes a first mold half having one of at least one mold cavity and at least one mold core and a rotatable turret block rotatable on an axis for rotating a plurality of movable mold halves thereof into alignment with the first mold half. Each of the movable mold halves include one of at least one mold cavity and at least one mold core matable with the first mold half for forming a mold for molding a molded article. The rotatable turret block is further for clamping the movable mold halves and the first mold half together. The machine further includes a mechanism for moving the rotatable turret block relative the first mold half a first injector for injecting melt into the at least one mold cavity.
    Type: Grant
    Filed: March 6, 1996
    Date of Patent: March 17, 1998
    Assignee: Husky Injection Molding Systems Ltd.
    Inventors: Robert Schad, Robin Arnott
  • Patent number: 5705112
    Abstract: The invention concerns a procedure for the manufacture of an assembled object intended for repeated assembling and disassembling, e.g. a tube (1) with matching cap (4), and a machine for the execution of this procedure. According to the invention the tube (1) and the cap (4) are cast in the same mould (7) end ejected simultaneously and assembled in the exact position they are to have when used. This can suitably be done by first casting the part (4), which at the boundary surface is placed outermost. When it has assumed its final shape, it serves as an independent mould when producing the other part (1). The first cast part (4) thus contributes to the securing of the core system (9, 10, 11) for the other part (1), whereby the wall thickness of this part can be made especially uniform and thin. The machine for the execution of the procedure can thus cast e.g. the assembled cap (4) and tube (1), and it can, therefore, also be adapted to perform an automatic filling, sealing and possibly stamping of the tube.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 6, 1998
    Inventor: Jes Tougaard Gram
  • Patent number: 5643620
    Abstract: An apparatus for serially molding articles from a plastic resin material includes an extruder having an output for producing a stream of plasticized resin material. A circular array of molds is arranged about a central area and a runner system coupled between the extruder output and the circular array of molds maintains the stream of plasticized resin material at a temperature suitable for molding. A valve is connected between the runner system and an input leading to an accumulator chamber of each mold of the circular array for sequentially directing the plasticized resin into each of the molds to form a molded article therein. A molded article extractor sequentially removes the molded article from each of the molds, and a molded article handling apparatus coupled to the molded article extractor arranges the molded articles in a series for removal through the central area.
    Type: Grant
    Filed: August 9, 1995
    Date of Patent: July 1, 1997
    Assignee: Electra Form, Inc.
    Inventor: Charles J. Brun, Jr.
  • Patent number: 5612068
    Abstract: In an apparatus for the transfer of substrates (9) from an initial station (3) through several process stations (4 to 8) and back to this initial station (3), manipulators (10 to 14) having pivoting gripper arms (15 to 19) and carousel transfer systems (20,21) for the transfer of the substrates (9) are provided. One of the carousels (20) provided with substrate holders (22) cooperates both with a two-armed first manipulator (11) and with a two-armed second manipulator (10). The second manipulator (10) lifts several substrates (9) simultaneously from the first carousel (20) in one period of time and feeds them to the corresponding second process station (5) which is configured for the simultaneous processing of several substrates.
    Type: Grant
    Filed: December 7, 1994
    Date of Patent: March 18, 1997
    Assignee: Leybold Aktiengesellschaft
    Inventors: Stefan Kempf, Eggo Sichmann