Abstract: A method and apparatus for injection molding articles from a thermoplastic or similar material. A plurality of molds are mounted on a turntable and are indexed to selected positions as the turntable rotates about its axis of rotation. Radial slots divide the turntable into sectors, each having a mold thereon. A clamping mechanism is provided which successively deflects each sector slightly from the plane of the turntable in order to precisely align the mold thereon with an injection nozzle and then securely clamps the halves of the mold together while the injection nozzle injects moldable material into the cavity in the mold. Interchangeable cavities with different size and shape characteristics are provided in the injection molds and associated with each mold is a resettable indicator designating the particular type of cavity presently installed in that mold.

Abstract: The invention relates to a method of moulding a tire for a wheel rim by means of a mould having mould parts, said mould parts being movable between a closed working position in which they enclose a mould cavity with the shape of the tire and an open position in which said mould parts are spaced apart, wherein in the open position of the mould parts a hollow tire core is positioned in the mould cavity while being receivable with respect to said parts, wherein the mould parts are moved into the working position, in which a residual cavity not occupied by the tire core is left free in the mould cavity, said residual cavity. Preferably the tire core is arranged on the wheel rim before being positioned with respect to the mould parts. The invention also provides a device for moulding a tire and a tire obtained with the aid of the method and device.

Abstract: This machine has a turret which rotates about a horizontal axis on a frame that is movable into and out of a loading position adjacent a rotary extruder. The turret comprises a tubular shaft, a plurality of axially spaced, circular plates secured to the shaft coaxially thereof, and a plurality of identical, radially projecting panels that are secured in registering radial slots in the circular plates. A separate mold is mounted in the angular space between each pair of adjacent panels, and comprises a stationary section fixed to one of the circular plates for rotation therewith, and a movable section mounted for reciprocation by a collapsible linkage into and out of a closed position against the associated stationary section.

Abstract: An end capping machine is disclosed wherein a plastic end cap is formed and bonded to a cardboard sleeve so as to form an integral, wide-mouth container. Each cap is formed and thermoplastically bonded in essentially one-station of a multi-station operation. The machine of the present invention is particularly useful in forming oil cans, and eliminates the need for the conventional metal base and sides.

Abstract: Composite moulded rubber or plastic articles, each comprising two distinct parts separately formed by injection moulding of different materials and subsequently joined together by vulcanising or the like, are produced in a dual purpose apparatus that simultaneously moulds two separate parts and bonds together two previously moulded parts.

Abstract: In an injection molding apparatus in which an injection device imposes a touching force on an injection mold in a direction perpendicular to the direction of the clamping force for closing the mold cavity, an apparatus is provided which imposes a force on the injection mold of an equal magnitude an in an opposite direction to the injection device touching force. The apparatus can be a hydraulic ram which is driven by fluid from the same line that supplies fluid to drive the touching motion of the injection device.

Abstract: A four-sided turret interposed between a fixed and a movable platen of an injection-molding machine, mounted on a carriage which is slidable in the direction of platen motion, is rotatable about an axis perpendicular to that direction into four operative positions spaced 90.degree. apart. In each of these positions, in which one or more cores carried on one of its faces enter respective cavities of a confronting mold plate on the fixed platen while a corresponding core or cores on an opposite face are received in a companion plate on the movable platen, the turret is positively indexed by two aligned pins on these plates which enter respective bores in the turret upon closure of the mold; such closure, conversely, is prevented by the pins until the turret is in the proper position.

Abstract: The method of aligning the injection nozzle of a mold injection machine of carousel type with the ingate opening of a mold supported on the carousel which comprises the steps of first rotating the carousel to an initial mold position at the mold injection station by an indexing mechanism and then with the indexing mechanism disengaged from the carousel, adjustably moving and locking the carousel by a releasable locking mechanism into the mold injection position wherein the nozzle is movable into and out of operative engagement with the mold ingate opening. The location of a mold at the injection position therefor is initially predetermined by and then accurately relocated and maintained by the locking mechanism during the mold injection cycle.

Abstract: An injection casting apparatus for the manufacture of multiple layer shoe soles in a multiple element mold (11). The bottom of each mold is closed by one of two bottom stamps (14, 15) disposed on the ends of support arms (23, 24) which are mounted about an inclined axis of rotation (42). The bottom stamp not in use is directed radially outward from the apparatus to improve servicing and cleaning. The bottom stamp in use is centered above a raising and lowering device (37) which moves the stamp into operating position to close the mold and away therefrom to rotate the stamps. This centered arrangement prevents any torque from arising in the bottom stamp during use.

Abstract: A molding apparatus and method are provided for forming patties from an agglomerable edible material such as meat. The apparatus includes a turret which rotates between a feed station where the edible material is fed upwardly under pressure into one of a plurality of mold cavities and a discharge station where each formed patty is ejected by a piston. An improved sealing means is provided for effecting sealing engagement of a feed spout assembly with the bottom surface of the rotating turret. An improved cut-off band is also provided for separating the formed patties from the turret at the discharge station. Reciprocation of the piston in each mold cavity is regulated by a control means which includes means for limiting the free upward movement of the piston until the cavity opening is fully aligned with a feed opening in the feed spout assembly.

Abstract: An injection molding machine has a round support member rotatably mounted on a shaft, there being at least a series of molds supported on and along the periphery of the table. Each of the molds includes a pair of relatively pivotable mold members, one of which is operatively connected to a power actuator which includes a fluid-pressurizable cylinder fixed to the support member and a piston having a rod projecting from the cylinder for actuating said one of the pair of mold members.

Abstract: Foam molding apparatus wherein individual molds filled with a flowable foam-material mixture are subjectible in a hardening operation to a heating and subsequent cooling interval, includes a rotatably driven table carrying a plurality of the molds for hot-foam molded articles, means for directly and individually heating and cooling the molds, a central rotating distributor head carried by the table, and individually closable connecting lines which, with the central rotating distributor head, connect the individual molds to corresponding heating, cooling and energy-medium supply sources, and method of operation thereof.

Abstract: A apparatus are disclosed for molding plastic articles, wherein the method includes the steps of filling a mold cavity at a first station with heated flowable plastic material and then displacing the mold to a second station where the plastic material is cooled under pressure. The apparatus includes a rotatable support for displacing the mold between the first and second stations, a plastic supply means at the first station to fill the molds, and a displaceable rod at the second station for insertion into the mold to apply pressure to the plastic material during solidification cooling.

Abstract: A process for working up thermoplastic synthetic resin material, in particular unsorted thermoplastic synthetic resin waste material into an article having the working and processing properties of wood, and in which the material is subjected to a mixing operation in a housing including a screw member, and is fluidized, moulded, cooled in the mould, and removed from the mould. According to the invention, the synthetic resin material is supplied to an extruder without a screen member and without an extrusion nozzle, and kept therein until there is obtained a material that is fluid owing to temperature increase, and which material contains a gas when it leaves the extruder. The material is then passed into a mould having open ends, one of which is connected to the outlet of the extruder.

Abstract: This invention relates to a process for the manufacture of a tire in segments in a closed mold wherein the internal surface of the mold determines the shape of the external surface of the tire segments, comprising:(a) radially moving from the center of a mold towards the internal surface of the mold a molding tool which determines the shape of the internal surface of the tire segments while leaving a space between said molding tool and said internal surface of said mold, said space conforming to the shape of said tire segments;(b) filling said space between said molding tool and said internal surface with a plastic compound; and when said plastic compound is solidified,(c) moving said mold or said molding tool in the circumferential direction so that the next segment follows immediately upon the segment already produced.

Abstract: An elongate consolidated article for treating molten metal has a multiplicity of elongate fibers embedded within a coherent matrix of treating agent.

Abstract: A method of and apparatus for injection molding of injection molded parts containing imbedded inserts, especially injection molded parts formed of a thermosetting plastic, comprising an injection molding machine equipped with an injection nozzle located at an injection molding position and a divided injection mold having hollow mold compartments or cavities. The injection mold is operatively connected with the injection nozzle and one of the cooperating mold halves is connected with a stationary mold support plate and the other mold half with a movable mold support plate displaceable towards and away from the stationary mold support plate. At an insert element-filling position removed from the injection molding position there is provided means for delivering and introducing the insert elements into the hollow mold compartments.

Abstract: The proposed machine incorporates a rotatable support on which injection cylinders which cooperate with actuating hydraulic cylinders are mounted. Each injection cylinder accommodates a ram and a nozzle which are capable of mutual axial motion. The actuating hydraulic cylinder is coupled directly to the ram which engages the nozzle at the moment they come into contact. The injection cylinder is fitted with internal annular grooves, one of which communicates with a plasticator.The nozzle is provided with channels for placing in communication a cavity, defined between the ram and the nozzle, and the nozzle outlet orifice via one of the annular grooves.

Abstract: A plurality of cylindrically segmental mold pairs together forming an array having an outer surface and each having a mold cavity and an inlet between a respective cavity and the surface is continuously rotated past the end of a generally stationary nozzle so as sequentially to align the inlets with the nozzle end. A plastified and hardenable resin is continuously fed under pressure to the nozzle end which is spaced from the surface of the mold array by a predetermined distance. Thus resin material continuously exits from the nozzle. When the nozzle is aligned with an inlet opening this material enters the inlet opening and forms a body therein and a sprue integral with the body. When the end is not aligned with the inlet the material escapes laterally from between the end and the surface and forms on the surface a generally continuous film unitary with the sprues.

Abstract: A machine for the production of footwear by injection molding comprises a multiplicity of shoe molds on a common carrier, such as a turntable, moving successively past a core-insertion station and an injection station. At the insertion station, a mold core in the form of a last is lowered into an open shoe mold which then moves into alignment with an extruder at the injection station. The lowerable core support at the insertion station carries a feeler which, by coming to rest on an aligned mold or on the mold carrier, limits the descent of the core into the mold.

Abstract: A method and apparatus for assembling a bearing assembly having bearings therein in a wheel having a hole in the center thereof of a diameter greater than the outer periphery of the bearing assembly. A plurality of molds are provided on a turntable and are indexed between selected positions as the turntable rotates about its axis of rotation. Each of the molds on the turntable has two alignment devices therein, one alignment device being provided for aligning the axis of rotation of the bearing assembly so that it is coaxial with the central axis of the other alignment device. The other alignment device supports the wheel to effect a placement of the center of the outer diameter of the wheel in coaxial relationship with the axis of the one alignment device. A nozzle is provided on the mold and has inlets or orifices to the mold which are aligned with the spacing between the outer periphery of the bearing assembly and the wall surface of the hole in the wheel.

Abstract: A rotatable wheel has cavities formed in the perimeter thereof. Movable coring pins are also mounted on the wheel perimeter and have cam track follower means which ride in stationary cam tracks positioned adjacent the wheel and which move the coring pins in and out of said cavities as said wheel rotates. An extruding means has a nozzle positioned adjacent the wheel perimeter and forces molten plastic into the cavities as they pass thereby with the coring pins inserted therein. The configuration of, and spacing between, the wheel perimeter and the nozzle produces plastic links between the plastic products formed in the cavities to provide a continuous strip of such parts secured to a common carrier, which strip can be wound upon a take-up reel directly from the wheel. Alternatively, movable coring pins positioned radially with respect to said wheel, or at other angles, can be moved in and out of the cavities as the wheel rotates.

Abstract: Injection blow molding equipment for the production of hollow articles wherein cores are axially inserted in blow molds and blank molds is disclosed. Compact core assemblies and fluid supply systems integral with the platens allow the mold parts to be mounted on the surfaces of opposed, relatively movable platens. Partible neck rings associated with each core open divergently outwardly as the blow mold and core separate, to shorten machine cycle time. A manifold, supplied with cooling fluid from the periphery of a core mounting plate, distributes heat transfer fluid to the core assemblies for cooling the neck rings. In one embodiment, mating blow mold sections are mounted on contra-oscillatable mounting members and are opened and closed by arcuate movement of the mounting members.