Abstract: Various implementations include a device for pumping grout. The device includes a body and a pump. The body defines a first opening, a second opening, and a third opening. Each of the first, second, and third openings is in fluid communication with each other. The first opening includes a first one-way valve configured to allow the flow of grout toward the second and third openings, and the second opening includes a second one-way valve configured to allow the flow of grout away from the first and third openings. The pump is sealingly coupled to the third opening and in fluid communication with the first and second openings. The pump is configured to increase and decrease pressure within the body to cause the flow of grout from the first opening to the second opening.

Abstract: The present invention includes an injection molding factory system and an associated facility that comprises a building having a series of injection molding machines array on a first floor with the resin supply placed on a mezzanine level. The injection molding machines are arranged with automatic product conveyors to move injection molded product from the injection molding machines without the need for human operators or separate vehicles.

Abstract: The invention relates to a device for producing plastic articles by forming them in an inert atmosphere, the device comprising a hopper, a feed screw and means for forming the polymer melt. The device for injecting inert gas comprises a gas feed pipe, a gas injection surface near the wall of the hopper and a homogenization chamber fitted between the wall of the hopper and the gas feed pipe. That end of the gas feed pipe which is directed towards the injection surface is closed and has at least one radial opening O allowing the gas to be ejected at right angles to its direction of flow in the pipe.

Abstract: The invention relates to a device for producing plastic articles by forming them in an inert atmosphere, the device comprising a hopper, a feed screw and means for forming the polymer melt. The device for injecting inert gas comprises a gas feed pipe, a gas injection surface near the wall of the hopper and a homogenization chamber fitted between the wall of the hopper and the gas feed pipe. That end of the gas feed pipe which is directed towards the injection surface is closed and has at least one radial opening o allowing the gas to be ejected at right angles to its direction of flow in the pipe.

Abstract: An extruder for the plastification and extrusion of a rubber mixture in the form of two cold material strips through two inlet passages (4, 5) has in a housing (1) two gears (2, 3) meshing with one another in the manner of a gear pump. The inlet passages (4, 5) are provided each in an insert (8, 9) which is held replaceably in the housing (1). In this manner it becomes possible, by exchanging the inserts (8, 9) to adapt to various materials to be worked by the extruder.

Abstract: Method and apparatus for manufacturing void free products using vacuum transfer molding. The method comprises evacuating gas from a preheated resin mixture in an injection accumulator assembly before injection into a mold. The apparatus includes a fixed upper platen assembly supporting an injection accumulator assembly having appended thereto a gas exhausting means and a feed material holding canister on its upper surface and an upper match mold portion on its lower surface. The movable lower platen assembly supports a lower match mold portion on its upper surface and is supported by a plurality of hydraulic cylinders of a bottom plate assembly. The platen assemblies include a sandwich of a press plate, an insulating fiber board and an internally heated platen.

Abstract: A slurry tank which stores an inorganic slurry includes a funnel-shaped lower tank portion having a discharge port. A valve is positioned in the slurry tank above the discharge port and complementary in shape to an inner surface of the funnel-shaped lower tank portion of the slurry tank. The valve can be moved by an actuator selectively out of the discharge port to allow the inorganic slurry to be discharged from the discharge port and into the discharge port to stop discharging the inorganic slurry from the discharge port. A proportional pump is connected to the discharge port for supplying the inorganic slurry at a constant rate to a mold for injection molding when the valve is moved out of the discharge port by the actuator. A cylinder is connected to the proportional pump for being supplied with the inorganic slurry from the proportional pump and the cylinder opens into the mold.

Abstract: A material loader includes a material hopper, an air filter, a hopper support and a control box. The filter is positioned on top of the hopper, and the hopper is positioned on top of the hopper support. The entire unit is mounted directly over the throat of a plastic injection molding machine and feeds a mixture of virgin and regrind plastic into the machine. The control box, mounted on the side of the plastic injection molding machine, contains timers and other electronic equipment which run the unit to control amount, ratio and timing of conveyance of feed material to the hopper, and ultimately to the press. Two inlet tubes feed plastic into the hopper, one feeding virgin plastic and the other feeding regrind plastic. The control box contains load timers, which may be adjusted manually to control the exact amount of each type of plastic which is fed into the hopper.

Abstract: An apparatus for gas assisted injection molding having a fluid forcing nozzle with a minimum of moving parts is shown. This apparatus produces an injected molded article by forcing a stream of molding material from a source of molten plastic through a fluid forcing nozzle into an article forming mold space. After the desired amount of material has been injected to fill the mold cavity, the flow through the fluid forcing nozzle is shut off, and replaced by a pressurized fluid or gas flow. The fluid forcing nozzle has an operable valve part operable between a first position and a second position. When the valve part is in its first position, a continuous flow channel from an injection molding machine to a mold sprue is provided for a molten plastic material. When the valve part is in its second position, a portion of the first flow channel is blocked, and a flow channel for an injection gas to the mold sprue is provided.

Abstract: An apparatus for gas assisted injection molding is shown including a source of injection gas and a source of molten plastic or synthetic resin material. The apparatus includes an injection nozzle with a minimum of moving parts. The injection nozzle includes a nozzle body portion having an axially extending bore therethrough for establishing a flow path. A valve chamber is provided in the axially extending bore, and a spherical valve is mounted in the valve chamber for rotation between a first position in which a first flow path is established, and a second position in which a second flow path is established. A sealing member sealingly mounts the spherical valve in the valve chamber, and means to activate the spherical valve are included.

Abstract: A highly viscous or dough-like material, especially glass fiber-filled polyester, polyamide or polypropylene is fed from a rotating funnel via a feed worm lying along a generatrix of the funnel directly into an extruder or an injection molding cylinder and without passing through an elbow or other jacket. The system is thereby able to operate at reduced pressure with least damage to the fibers and reduced drive energy for the feed worm or screw.

Abstract: A device for filling molds with a casting resin or the like. An elastic casting container, with at least one fill and discharge opening, is arranged in the pressure box, which casting container selectively receives the casting resin therein from a feed pipe and delivers the casting resin to the mold through a fill pipe. The casting container is emptied by a pressure buildup inside of the pressure box, either by means of a gaseous or a liquid pressure medium. In this manner, the casting container can be loaded with the casting resin such that a renewed gas loading of the already degassed casting resin prior to the filling of the mold no longer occurs, while simultaneously limiting cleaning operations.

Abstract: A mold or die having two parts with a cavity and an interface between them and a feed opening in one of the mold parts cooperates with a charge feed for raw changes and any evacuation device providing a low pressure.

Abstract: An apparatus for making a plastic injection molded part with a smooth surface or skin and a hollow core wherein thermoplastic material is injected as a molten stream into the mold cavity through a sprue bushing fixed in the mold. Simultaneously, an unmeasured quantity of inert gas is introduced through an adapter into the molten stream at the sprue bushing substantially coaxially with the melt stream and at a pressure sufficient to penetrate the thermoplastic material to form a gas cavity in the molten material in the mold. For retrofitting an existing mold, an adapter can be added to the existing sprue bushing. During plastic injection and cooling in the mold the gas is maintained at a high pressure, preset, constant and adequate to maintain the plastic against the mold surface until it is self-supporting. The gas is exhausted from the mold, back through the sprue bushing and adapter, before the mold is opened.

Abstract: A method of filling a mold with resilient beads and transport apparatus for delivering the beads to the mold, wherein the beads are passed from a supply bunker to the mold via a transport line by a transport fluid, and wherein pressure in the transport line is equalized by feeding an additional fluid over the length of the line. The apparatus includes a bead-carrying pipeline or hose having sieve-like wall orifices which are connected to channels which run along the length of the pipe or hose. The orifices permit fluid exchange between the pipe or hose and the channels, which exchange serves to equalize the pressure within the pipe or tube and therefore prevent the pipe or tube from becoming blocked.

Abstract: A molding apparatus for molding a clay pigeon includes a bypass tube having a tip disposed in a blow orifice communicating with a cavity of a metal mold in the form of the clay pigeon. The bypass tube has a diameter smaller than that of the blow orifice and compressed air, which leads molding material in the blow orifice, passes therethrough in order to supply the molding material mixture of at least sand and hardening agent to the cavity, whereby corners and details of the cavity are satisfactorily filled with the molding material supplied to the cavity.

Abstract: High voltage insulator is produced by inserting a fiber reinforced core into the mold and filling the mold from the bottom through a casting pipe line attached to a tank for a ready to use liquid silicon rubber mixture, and transferred to the heated mold where crosslinking of the mixture occurs.

Abstract: A steam venting extruder feeder is provided for gravity feeding of flowable solid materials into a food extruder downstream of the first normal first zone feed port. The steam venting extruder feeder feeds the material down a tube while simultaneously venting steam from within the extruder around the periphery of the feed tube inside an outer tube in which compressed air is forced to assist in the flow of steam and pulls air in with the feed material preventing steam condensation and build-up in the feed tube.

Abstract: A nozzle for the injection molding of thermoplastic materials includes a nozzle body having a first bore for establishing a flow path for a molten thermoplastic. A first end of the nozzle body is adapted for fluid connection with a sprue of an associated mold body, and a second end thereof is adapted for fluid connection with an end of an associated injection molding machine. The nozzle body also includes a second bore. A first valve assembly, which is adapted for reciprocating movement in the nozzle body second bore, is provided to control the flow of plastic through the nozzle body. The first valve member includes a body having a tip portion and a fluid passage formed in the body and open at one end through the tip portion. A connection member is provided for communicating the valve body fluid passage with an associated source of pressurized fluid.

Abstract: There is provided an injection molding machine for the manufacture of plastic parts from thermoplastic, thermoset and/or elastomer material by injection molding or reaction injection molding. The machine includes a multi-station locking unit of horizontal or vertical configuration designed to hold a number of molds and an injection unit associated therewith for the simultaneous injection of the molds. The machine also includes two outer mold clamping plates, one of which is mounted on guide elements and movable thereon in the locking direction and a center mold-receiving part movably mounted on guide elements between the two mold clamping plates and having a heatable melt conduction system with sprue nozzles and one half of a mold attached to each of its sides.

Abstract: The molding apparatus for molding compact discs defines an openable mold cavity and the information bearing disc which forms the impression on the compact disc in held in place by vacuum in the mold cavity in order to allow ready and easy removal and replacement of the insert when necessary.

Abstract: A pressing tool for producing dish-shaped pressed objects, in particular plates, cups, bowls, etc.

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: Apparatus for applying labels in the molds of a plastic blow molding machine of the type wherein a plurality of sets of molds are mounted on a wheel rotatable about a horizontal axis and the molds are moved toward and away from one another to enclose a parison and the parison is then blown to the confines of the cavity between the mold sections which comprises removing labels successively from one or more magazines, depositing the labels on an endless conveyor which transports the labels to a position adjacent an open mold and laterally transferring the labels from the conveyor to a position within the molds such that when a mold closes about a plastic parison and the parison is blown, the labels become adhered to the blown plastic bottle.

Abstract: An apparatus is disclosed for controlling operating pressure within a mold cavity of an injection molding die. Finely detailed, and parts having thin walls are molded with the invention providing a process for eliminating defects. There is a pressure control apparatus which is preset to provide varying degrees of negative and positive pressure during the mold cycle, and to reset to repeat the procedure for subsequent cycles. The procedure includes a cleaning stage for preparing the mold cavity for the following mold cycle.

Abstract: An apparatus for molding complex powder articles having a two part dilatant mold resiliently coupled. The two halves of the mold are resiliently pressed into physical contact with each other by external means. A vacuum pump connected to the mold produces a fluidized powder material flow from a powder feed mechanism into the mold cavity. A vibrator vibrates the mold during the filling of the mold cavity with powdered material with a force sufficient to slightly separate the two halves of the mold cyclically dilating the volume of the mold cavity. The dilation of the mold cavity in combination with the fluidized powder feed permits the mold cavity to be uniformly filled with powder material. Dilation of the mold cavity also compacts the powder material received in the mold.

Abstract: Apparatus including a material reservoir, a tool having a mold cavity, and a cylinder having a plunger for pushing material received by the cylinder from the reservoir into the mold cavity. Equipment is provided for evacuating the reservoir, the mold cavity, and the cylinder. The reservoir is connected to the cylinder in a vacuum-tight manner. The evacuating equipment includes a vacuum pump and a vacuum reservoir, and valves permit optional connection of the material reservoir and the mold cavity to the vacuum pump or the vacuum reservoir. The volume of the vacuum reservoir is many times, i.e., 100 to 1000 times, greater than that of the mold cavity. A shutoff valve for disconnecting the mold cavity from the evacuating equipment is located in the immediate vicinity of the mold cavity. All the valves may be operated in a predetermined sequence by a control unit. The material reservoir may serve simultaneously as the vacuum reservoir.

Abstract: The present invention relates to a filling device for introducing pre-foamed, post-expandable thermoplastics into molds for the production of moldings from plastic foams, especially from pre-foamed polystyrene foam, for example Styropor or Styrocell, in which the pre-foamed plastic is introduced in granular form into the mold by reason of a pressure difference existing between the stock container for the plastic granules and the mold and/or introduction of injected air. The filling device essentially consists of a cylindrical piston case with a lateral feed pipe for the plastic granules and a piston which is movable in the longitudinal direction within the cylindrical piston, for closing the mold inlet orifice after filling has taken place. The filling device according to the invention is characterized by a movable shut-off sleeve, which, by means of a spring, blocks the supply of granules when the piston has passed the feed pipe in the direction towards the mold.

Abstract: A deflector for use on an automatic molding machine deflects incoming sand downwardly onto the drag table and then upwardly into deep recesses in the pattern. The sand deflector is formed as a rectangular prism from a single block of metal, and has two deflecting channels separated by a strengthening septum. The channels are arranged at a predetermined angle in relation to the mounting surface of the deflector.

Abstract: A system for disposing of fly ash where the dry fly ash is transported by pneumatic hose to a portable container which is utilized in the manner of a mold. The container is of a general truncated pyramidal shape, closed at the top end and open at the bottom. The fly ash is blown into the container and simultaneously wetted by sprayed liquid within the container. The air which is used for transporting the fly ash is removed from the container by a filtering system and the fly ash is allowed to harden into cement-like ingots or cakes for further handling thereof.