Abstract: A dual platen molding machine for constructing a plurality of pre-insulated structural panels is disclosed that includes multiple safety features. The molding machine produces one or more panels that may include one or more c-channels or profiles embedded in expandable polystyrene (EPS) foam to provide structural integrity to the panels, and resulting wall. A chase may be formed horizontally in the panels to provide a wiring conduit through the panel. The molding machine is electrically operated to control the movement of a movable molding portion when closed upon a stationary molding portion. Steam may be controlled to fuse insulating material such as expandable polystyrene (EPS) in cavities formed between the movable mold and the stationary mold. No hydraulics is required to operate the dual platen molding machine, thus improving operating and maintenance costs. Moreover, steam hoses may be avoided, thereby improving overall safety.

Abstract: A resin material supply apparatus and a method thereof ensuring the supply of a predetermined amount of resin material and improved molding quality. The resin material supply apparatus includes a weighing unit which allows a predetermined amount of resin material to be loaded into weighing pots, an agitating unit which receives the resin material from the weighing pots into agitating cups for agitation using rotating plungers, a traveling unit which allows the agitating unit to travel back and forth between the weighing unit and a molding die, and a supply unit which permits resin material which has been agitated and molten in the agitating cups to be extruded into a mold pot of the molding die by movement of the plungers via a vertically traveling motor rotatable in both forward and reverse directions.

Abstract: The present invention relates to a sprue bar assembly for use with a number of different injection molding machines. The sprue bar assembly comprises a fixed sprue bar section having a first channel through which molten material, such as a plastic resin, flows. The first channel communicates with the outlet of a source of the molten material. The sprue bar assembly further comprises an adjustable sprue bar section having a second channel through which molten material flows and a powered unit for holding the adjustable sprue bar section in contact with the fixed sprue bar section so that molten material can flow from the first channel to the second channel without leaking and for changing the length of the sprue bar assembly as needed to accommodate molds of different shutheights.

Abstract: An innovative method and apparatus for synchronizing the flows of molten polymer or similar materials in molding systems which utilize manifolds to direct flow into one or more cavities of an injection mold. The apparatus utilizes intermeshing positive displacement, interconnected gearing systems similar to positive displacement gear pumps in hydraulic systems. These positive displacement gear mechanisms are placed in each parallel flow channel such that all flow in each channel passes through a gear mechanism. Each of the parallel pumps are connected together directly via a shaft or indirectly using hydraulic motors, stepper motors, or other motors to synchronize the parallel flows. Each flow can be different to allow the directing of flows in complex tools or when molding parts in family molds.

Abstract: A post-cure inflator for inflating and cooling a vulcanized tire is disclosed. A lower rim mechanism is easily and certainly fixed, the whole apparatus is miniaturized, and the degree of freedom in designing when the lower rim mechanism is moved is made higher. The lower rim mechanism is lifted so that a locking shaft attached to an upper rim mechanism enters a fitting portion of the lower rim mechanism. After that, the locking shaft is rotated to be engaged with the lower rim mechanism, thereby connecting the lower rim mechanism via the locking shaft to the upper rim mechanism. A tire is inflated and cooled while being held by the upper and lower rim mechanisms. Guide plates are fixed to the upper rim mechanism so as to be along the locking shaft. Insertion grooves are formed in the lower rim mechanism. When the locking shaft enters the fitting portion, the guide plates are inserted into the insertion grooves.

Abstract: A tire vulcanizer is provided with a vulcanizing station where tire vulcanizing molds are arranged to perform vulcanization. The tire vulcanizer also includes a mold opening/closing station where, after the tire vulcanizing mold is opened, a vulcanized tire is taken out from the inside of the tire vulcanizing mold, and then an unvulcanized tire to be succeedingly vulcanized is inserted into the inside of the tire vulcanizing mold so as to be shaped before the tire vulcanizing mold is closed. Also, a mold carrier truck is provided which is movable between the vulcanizing mold and the mold opening/closing station. An unvulcanized tire storage section is disposed above each of the tire vulcanizing molds in the vulcanizing station.

Abstract: Separable upper and lower rims of a post-cure tire inflator requiring no upper rim replacing operation which requires much time and labor especially when mounting the upper rim, and also no time and labor for holding a lower rim upward when mounting. In the upper and lower rim for holding the bead section of the tire, a high-pressure air is filled in a cured tire discharged from a tire curing press to thereby inflate and cool the tire; therefore at least the upper rim has stairway-like steps having two or more outer diameters fit to the bead diameters of tires of different sizes and formed by extending a small outer diameter on a large outer diameter.

Abstract: An apparatus for forming a modeling composition includes an extruder assembly for receiving and extruding a quantity of said modeling composition, and first and second mold assemblies of different sizes which are removably receivable on the extruder assembly for receiving modeling composition extruded therefrom. Each of the mold assemblies includes a rear plate portion and a front mold cavity portion which is preferably made of a transparent plastic material and adapted to be assembled with the plate portion thereof so that it cooperates therewith to define a mold cavity for receiving modeling composition therein from the extruder.

Abstract: An injection molding die for simultaneously molding a plurality of optical disc base boards. The die has a stationary die assembly portion that includes a first base plate having a first center axis, and a plurality of first cavities each having a respective center axis. The first cavities are arranged in an equally spaced relationship along a circumference of a circle coaxial with the first center axis. The die also has a movable die assembly portion that includes a second base plate having a second center axis, and a plurality of second cavities each having a respective center axis. Each second cavity positionally corresponds to a respective first cavity. The first center axis is aligned with the second center axis using a guide rod fixedly secured to the first base plate and that extends along the first center axis, and by using a guide member that extends along the second center axis to be positionally coincident with the first center axis.

Abstract: A method of manufacturing road vehicle tires, whereby a toroidal forming mold, housing a finished green tire, is fed successively through a first preheating station where peripheral heating elements preheat the tread portion of the green tire; through a second curing station where the tire is cured; and through a third postinflation station where the tire, fitted to a tubular support and removed from the mold, is engaged by a cooling element for cooling the bead portions of the tire.

Abstract: A post-cure inflator wherein an upper rim is automatically exchanged. A locking shaft is mounted for rotation on a rotary frame, and an upper rim support is mounted for rotation on the locking shaft. An upper rim is removably supported on the upper rim support. Also a lower rim support is removably supported on the locking shaft, and a lower rim is removably supported on the lower rim support and cooperates with the upper rim to hold therebetween a vulcanized tire, into which high pressure air is blown to inflate and cool the tire. The upper rim support and the upper rim have cooperating tapered fitting portions, and the upper rim has an outer peripheral circumferential groove formed at an upper portion thereof. A latching member is mounted on the upper rim support for movement into and out of the outer peripheral circumferential groove of the upper rim.

Abstract: A rim clearance adjusting device of a postcure tire inflator is capable of automatically adjusting a clearance between upper and lower rims, A vulcanized tire from a vulcanizer is filled with high-pressure air for inflating and cooling purposes. For these purposes there is installed a rotating screw member which holds the tire between the separable upper and lower rims, and moves the lower rim upwards and downwards between the lower rim and its support member. Also there is provided a sliding device for moving the lower rim, together with the support member thereof, between the lower position of the upper rim and the intermediate position on the vulcanizer side. And furthermore there is mounted a driving mechanism for driving the rotating screw member to the intermediate position.

Abstract: A shuttle assembly for an injection molding machine is provided. The shuttle assembly includes a shuttle-support unit adapted to be attached to the machine frame and a shuttle-mold interfacing unit, slidably coupled to the support unit. Mold-coupling members are provided for removably coupling a first movable mold platen unit and a second mold platen unit to the shuttle-mold interfacing unit.

Abstract: An auxiliary support (1) for a road vehicle tire (2), which support (1) is defined by a tubular drum (3) fitted in a fluidtight manner with the interior of a finished tire (2) for mutually locking the bead portions (22) of the tire (2) in a fixed position when the tire is pressurized, and constituting a carriage whereby the pressurized tire (2) is transferred along a post-inflation route (8) subsequent to curing.

Abstract: A process for manufacturing road vehicle tires (2), whereby each bead portion (4) of a first stage carcass (1) of a green tire (2) is fitted to a respective circular inner annular support (22), and a finished green tire (2) is formed by fitting the first stage carcass (1) to a second stage outer annular tread assembly (11) inside a toroidal housing constituting a tire forming mold (52), the inner annular periphery of which is defined by the inner annular supports (22) of the bead portions (4) of the first stage carcass (1), and the inner surface of which negatively reproduces the outer surface of the finished tire (2). The annular supports (22) of the bead portions (4) are maintained connected to the tire (2) pending completion of the post-inflation stage.

Abstract: A PCI rim comprising a bead seat and a flange each engaging a tire bead of a tire T wherein flange radius of the flange is set in a range from 7.5 mm to 12 mm, flange height of the flange is set in a range from 14 mm to 25 mm, and bead seat radius of the bead seat is set in a range from 4.5 mm to 7.0 mm. The gap F in practical engagement can be significantly reduced compared with the case of a conventional PCI rim. This brings unified circumferential engagement of the tire T with the rim 9 for a practical vehicle so that FV can be inhibited to be significantly small. Further, vibration problems caused by tire rotation are prevented and the displacement of the rim for the practical vehicle can be reduced.

Abstract: A method and device (1) for stabilizing a tire extracted at a relatively high temperature from a tire curing mold, whereby the tire (2) to be stabilized is inflated to a given pressure by a pressurized fluid, and cooled from the inside by circulating the pressurized fluid along a closed circuit (44) defined, at least partially, by the tire (2) and by a radiator (45) located outside thereof.

Abstract: An injection mold for use with a molding press has four mold levels in axially stacked relation, permitting a substantial doubling of output for a given size of press as compared with a back-to-back two level stacked mold. The mold feeder flow path extends axially from the injector head to a flow distribution block located at the center of the stacked mold block series. The centrally located distribution block is connected, in use isolation, sealed relation with the injector head, being axially displaceable therefrom in continuing sealed relation upon the opening of the mold. A drool prevention valve system, located at two of the mold interfaces, to preclude drooling of fluid plastic stock upon opening of the molds includes pressure fluid actuators for operating the valves, wherein the pressure fluid may comprise the fluid plastic stock.

Abstract: A PCI main body includes two sets of gripping mechanisms and is rotatable about a horizontal axis, and a loader for detachably gripping an outside rim of the PCI and which is swingable in a horizontal plane. A vulcanized tire is received on the outside rim of the loader externally of the PCI main body, the loader is rotated to a position underneath the PCI main body, the tire and the outside rim are locked to the main body, a tire is seated on and fixed between an inside rim and the outside rim, compressed fluid is fed to the inside of the tire, and the PCI main body is rotated. Accordingly, a degree of precision in the concentricity between the respective rims can be maintained, a remote operation is possible, and the rims can be exchanged in a short period of time. Also, in addition to the above-mentioned features, a slide mechanism causes a support member for the outside rim to retreat upon rotation of the loader. Thus, the stroke of a rim interval adjusting screw can be relatively short.

Abstract: A vehicle tire loading-unloading device having a mobile loading-unloading unit designed to enter inside a tire curing unit for receiving a cured tire on an upper supporting unit and, at the same time, releasing into the curing unit a green tire loaded on a suspension unit located beneath and integral with the upper supporting unit; the mobile loading-unloading unit being rotatable for unloading the cured tire.

Abstract: A method of preheating, curing and stabilizing vehicle tires, whereby, just before being subjected to curing a first green tire (3) is preheated simultaneously with the stabilization of a second cured tire (6), thus using the heat given off by the second tire (6) as it is being stabilized.

Abstract: A vehicle tire loading-unloading and stabilizing device having a mobile loading-unloading unit designed to enter inside a tire curing unit for receiving a cured tire on an upper unit and, at the same time, releasing onto the curing unit a green tire loaded on a suspension unit located beneath and integral with the upper unit; the upper unit being a stabilizing unit enabling the cured tire to be inflated by means of a pressurized fluid, and to be cooled from the inside by forced circulation of the pressurized fluid.

Abstract: An improved adjustable diehead assembly for mounting on a plastic extrusion machine is described. A discharge orifice for a parison of plastic is formed by a mandrel and annular member. The annular member is moveable by a holder assembly perpendicular to axis of the mandrel to adjust the orifice. The holder assembly includes cams which act upon the opposed sections of the outside surface of the annular member to adjust the orifice when first and second screws are tightened. A third screw acts upon the annular member to adjust the orifice. The screws are mounted on a front part of the holder assembly on the diehead to allow adjustment of the orifice even when the extrusion machine is operating.

Abstract: An apparatus for forming objects from a moldable material such as wax. The apparatus includes upper and lower mold pieces having upper and lower mold cavity halves attached thereto. A lever arm extends from the upper mold piece and is pivotally attached to a linear actuator. The upper and lower mold pieces are pivotably connected to one another. Movement of the linear actuator results in opening and closing of the upper and lower mold cavity halves about the pivotable connection of the upper and lower mold pieces.

Abstract: An injection molding machine and method of operation including a plurality of accessory arrangements for molding a plurality of piece parts in efficient overlapping time cycle using primary and secondary molten plastic injection units, primary and secondary clamping units, a plurality of injection units in various arrays including molding piece parts in reverse or uniform orientation.

Abstract: An injection molding machine and method of operation is disclosed having a plurality of accessory arrangements for molding a plurality of piece parts in efficient overlapping time cycle using primary and secondary molten plastic injection units, primary and secondary clamping units, a plurality of injection units in various arrays including molding piece parts in reverse or uniform orientation. Means are provided for sequentially and selectively injecting molten plastic to the injection molds in an overlapping cycle.

Abstract: An injection molding machine wherein a molding compound supply unit having a nozzle is moveable relative to a plurality of mold stations. Clamps are provided as an adjunct to the supply unit or as an adjunct to the mold stations for effecting a compound seal at each mold station. Appropriate power sources are provided for accomplishing the seal.

Abstract: An injection molding machine has a high volume cylinder with a piston slidably disposed in the cylinder. The piston is formed with channels and check valves for selective communication from the back of the cylinder to the front of the cylinder. A vertically disposed screw plasticizer provides molten thermoplastic material to the back of the cylinder, which material flows to the front of the cylinder with rearward movement of the piston. When the front of the cylinder is filled with thermoplastic material, the piston is moved forewardly to inject the thermoplastic material into a mold. A reciprocating screw plasticizer first assists in filling the front of the cylinder, and then in completing the injection molding under a high pressure. Novel composite thermoplastic products may be produced.

Abstract: An improved tire loading mechanism of a tire cooler in a tire vulcanizing machine is proposed to save time and human labor, to prevent jamming of a screw portion and to enhance economy of the machine. The tire loading mechanism is composed of a main shaft pivotably supported from a rotary table and rotationally driven by a drive source, an outer cylinder mounted to the main shaft so as to be relatively displaceable in an axial direction via screw threads and having an upper bead ring support flange at its lower end, and a housing mounted to the lower end of the main shaft via disengageably fitting claws and having a lower bead ring support flange at its upper end. A disengageable fitting rod for stopping rotation of the outer cylinder is provided on the rotary table at a position opposed to a vertical groove on the surface of the outer cylinder. An arrangement provided between the main shaft and the outer cylinder fixedly secures the outer cylinder to the main shaft upon rotational air cooling of the tire.

Abstract: The present invention provides in a stack mold with back to back centrally located mold cavities a multiple sprue bar arrangement including a pair of sprue bars balanced on opposite sides of the mold and connecting bridge across the sprue bars for interfacing to a plastic injector. At least one of the sprue bars provides a plastic flow path from the connecting bridge to the mold cavities.

Abstract: A tire tread (74,76,194) is injection molded by increments in a mold cavity (56,58,119,224,262) having an open end (110,272) closed by a trailing end (116) of a cured section (114,228). A temperature moderating closed end (109,207,268) prevents complete curing of a trailing portion (116) of the cured section (114,228) while the rest of the section is cured. The mold (14,16,90,188,236) is opened so that the cured section (114,228) may be shifted to a position where the trailing portion (116) is clamped in the open end (110,272) of the mold cavity (56,58,119,224,262). A second section (118,228,264) is injection molded in the cavity (56,58,119,224,262) and the partially cured trailing portion (126) of the cured section (114,228,264) is cured and adhered to the leading portion (130) of the second section (114,228,264) as the second section is cured. This process may then be repeated for later sections to provide a desired length of cured tire tread stock (74,194,264).

Abstract: A plastic injection molding system having a plurality of multiple tip torpedo heaters which each have a casing with a pair of opposed tips disposed in respective sprue passageways in a mold. An unsheathed electrical heating element is disposed in an internal bore of the casing at each tip and heat transmitting material is compacted in the bore in surrounding relation to the heating element for electrically insulating each heating element from the casing and filling all air voids between the casing and heating element to effect direct heat transfer to the casing. Electrical leads couple the plurality of heating elements to a power source to permit independent temperature control of the individual heating elements and the exposed surfaces of the respective casing tips over which fluid plastic material is directed.

Abstract: A method for preparing a shaped ice confection product wherein a mixture of ice particles and a liquid, which mixture is pumpable under pressure but maintains its shape if unsupported, is introduced under pressure into a mould which is closed apart from venting openings. An apparatus for manufacturing shaped ice confection products comprising means for manufacturing an ice confection mixture comprising ice cristals and a liquid phase, a chamber (1) with pressurizing means (2) and a devisible mould (7) having heating means (15) and being closed, apart from venting openings.

Abstract: An injection molding machine for use with at least two melting and injector units includes a fixed die platen, a movable die platen, and fixed spars on which said movable die platen moved. The die platens mount half-mold parts of injection molds while the other half-mold parts are positioned on a prismatic support base which can be rotated around its axis between these half-mold parts and which is movable in the direction of the fixed spars. The movable die platen mounts movable spars along which the prismatic support base is guided in the area between the two die platens. On the rear face of the movable die platen which faces away from the support base is positioned at least one drive for the two movable spars, and the movable die platen includes at least one runner for plasticized material injected therein from a melting and injector unit.

Abstract: An injection molding machine for plastics and any other similar materials. This invention molding machine is provided with a plasticization device for exclusive use which consecutively plasticizes material and feeds plasticized material to a plurality of injection devices in regular sequence. Each of the injection devices has its corresponding mold clamping device. By virtue of this construction, working efficiency of main sections of the machine is increased, resulting in a higher productivity of the entire injection molding machine.

Abstract: Molds for making composite bodies having at least three sections which are united along generally aligned intersections wherein the molds include two slideable molding blocks having molding cavities therein which are movably oriented with respect to a stationary molding cavity and wherein separate injectors are utilized to fill each of the cavities depending upon the positioning of such cavities.

Abstract: An injection molding machine for molding with a high polymer material such as rubber and resin which is improved in the working efficiency and productivity thereof. The injection molding machine comprises a plurality of independent metallic molds, a metallic mold securing device having two receiving portions for receiving and clamping the metallic molds therein, a metallic mold loading and unloading device for loading and unloading the metallic molds to and from the receiving portions, and a drive device for moving the metallic mold securing device. Accordingly, injection and vulcanization can be carried out alternately for two metallic molds so that, also during vulcanization for the first metallic mold, injection to the cavity of the second metallic mold can be carried out. The metallic mold securing device can otherwise have more than two such receiving portions when necessary.

Abstract: A machine for the manufacturing of moulded articles of plastic material, in particular of helmets for motor cyclists, includes at least two moulds and at least a counter-mould for the forming of the articles, the moulds and counter-mould(s) defining between themselves moulding cavities of different shapes. The moulds and the counter-moulds, excepting the first one, are each connected with a feeder of a different plastic material, and the moulds can be moved into alignment with the counter-moulds, for the moulding of respective superimposed layers of different plastic materials by sintering with steam.One mould is suitable to be positioned in correspondence of a zone of unloading of the article produced while at least another mould is in its forming position.

Abstract: A system for mass producing prestressed concrete railroad ties using a slip-forming method of casting concrete over a plurality of molds arranged side by side and end to end on a casting bed; a specially equipped continuous casting machine for slip-forming the railroad ties in an upside-down orientation; techniques and equipment for separating and removing finished railroad ties from the casting bed; a plant layout to facilitate casting and handling operations; a specially adapted apparatus for rotating groups of railroad ties to permit stacking thereof in right-side-up orientation.

Abstract: A central chamber of a mold body, communicating through a heated nozzle with a supply channel, has a plurality of peripherally spaced injection orifices opening into respective cavities for the molding of tubular articles such as shells of disposable syringes, each cavity being defined by a generally cylindrical recess in the mold body paralleling the nozzle axis and a core received with all-around clearance in that recess. Each cavity has two elongate sections of larger and smaller diameter interconnected by a wider annular gap at the level of the injection orifices; the axial width of the annular gap progressively diminishes with increasing distance from the corresponding orifice.

Abstract: A stack mold stabilizer for causing the multiple mold plates of a stack mold to maintain their required even spacing at all times during operation. The stabilizer includes a rack and pinion mechanism for maintaining an equal distance between the mold plates of the stack mold. The stack mold includes at least three mold plates with the mold plate at one end being fixed and having a first rack gear fixedly mounted to its side. The center mold plate has a pinion gear rotatably mounted thereon. The teeth of the pinion gear are maintained in firm meshing engagement with the teeth of the first rack gear by a first idler roller mounted on the center mold plate. The third mold plate has a second rack gear fixedly mounted to its side and has teeth which are kept in firm meshing engagement with the pinion gear by a second idler roller mounted on the center mold plate.

Abstract: An injection molding machine wherein a molding compound supply unit having a nozzle is moveable relative to a plurality of mold stations. Clamps are provided as an adjunct to the supply unit or as an adjunct to the mold stations for effecting a compound seal at each mold station. Appropriate power sources are provided for accomplishing the seal.