A hopper for feeding previously-mixed virgin and crushed plastic materials into the throat of a barrel of an injection unit of a plastic injection molding machine, the hopper comprising a rotating auger extending longitudinally preferably in the center of the hopper from an upper area to a lower area within the hopper. The rotating auger rotates in the same direction as the flights of the auger such that the auger's flights continuously lift up the materials from the bottommost area of the hopper to an upper area of the hopper, thereby minimizing the coagulation of the materials in the lower areas of the hopper.

A mixing device includes a first feed opening for a first liquid—preferably gas-laden—plastics component, a second feed opening for a second liquid plastics component, and a discharge opening for discharging a mixture of the first and the second liquid plastics component. The mixing device has a rotating agitator for mixing the first and second liquid plastics components, and a gap remains between the agitator and the discharge opening. An adjustment device is provided which either varies the gap by a relative movement between the discharge opening and the agitator, or varies the size of the discharge opening. A regulating device is connected in signal-transmitting fashion to a sensor for determining a pressure prevailing in the mixing device. The regulating device sets the gap, or the size of the discharge opening, by the adjustment device such that the pressure prevailing in the mixing device has a predetermined value.

A blade head for granulating strands of material comprises a blade carrier and at least one granulating blade fastened thereto. The respective granulating blade is fastened to a positioning component which bears against the blade carrier for the rough positioning of the granulating blade. For fine positioning purposes, at least one adjusting element bears against the respective granulating blade. The blade head permits simple, user-friendly and precise assembly and setting of the respective granulating blade.

A plasticizing device includes a drive motor, a rotor that is rotated by the drive motor and has a groove formed face with a groove formed therein, a barrel that is opposed to the groove formed face and has a communication hole, a heating portion that heats a material in a pellet form supplied between the groove and the barrel, and a control unit that controls the drive motor and the heating portion so as to plasticize the material supplied between the groove and the barrel and cause the material to flow out from the communication hole. The heating portion has a first heating portion and a second heating portion disposed closer to the communication hole than the first heating portion, and the barrel has a first region and a second region that is closer to the communication hole than the first region. The control unit individually controls the first heating portion and the second heating portion so that a temperature of the second region is higher than a temperature of the first region.

It is described an apparatus for the extrusion and mixing of plastic materials, for example rubber-based and silicone-based materials, comprising a dump extruder body whereon two conical screws (2) converging towards an extrusion die (3) suitable for being occluded by closing means (4) are mounted, the conical screws (2) being accommodated within a low-pressure compounding chamber (1) and within a pair of converging conical channels also defining a high-pressure chamber (2′), said low-pressure chamber (1) corresponding to an upstream area with respect to an extrusion direction, wherein said high-pressure chamber (2′) and/or said low-pressure chamber (1) accommodate a presser body (5, 5′, 6), defining a movable wall suitable for causing a controlled change in the volume of the respective chamber (1, 2′).

A system and method to dispense, mix, and inject liquids and force them into a vented investment pattern mold cavity comprises a source of raw materials in fluid communication with an injection unit for metering and delivering the raw materials. A mixing and injection head receives and mixes the metered raw materials. A movable molding cart upon which an investment pattern mold is mounted is disposed adjacent the injection unit and proximate the mixing and injection head. The movable molding cart includes a fill cup that may be engaged by the mixing and injection head. A displaceable gating tray provides fluid communication with the fill cup and a sprue aligned with an investment port on a lower portion of the investment pattern mold. The system also includes a digital computer control by which the injection process may be controlled.

A strand manufacturing apparatus capable of reducing variations among diameters of resin strands without stopping the operation of an extruder is provided. A strand manufacturing apparatus includes a die in which an outflow hole for discharging a resin material contained in an extruder as a string-shaped resin strand is formed, an adjustment valve configured to adjust opening of the outflow hole, an image acquisition unit configured to acquire an image of the resin strand extruded from the outflow hole, a diameter acquisition unit configured to acquire a diameter of the resin strand in the image, and an opening adjustment unit configured to adjust the opening by driving the adjustment valve based on the diameter of the resin strand acquired by the diameter acquisition unit.

The invention relates to a method and a device for producing a component by means of 3D multi-material pressure and to a component part produced therewith, wherein metallic and ceramic pastes, mixed with powder and binding agents, for producing the component are applied in layers by means of an extrusion process and are shaped, and the printing process is monitored by means of a monitoring device in such a way that defects in the pressure are detected by means of a camera and the defects are eliminated and/or overfilling or underfilling of each printed layer in relation to the extrusion quantity is monitored by means of a camera and/or temporary blockages in the extrusion nozzle are detected by monitoring the pressure in the region of the extrusion nozzle and released by increasing the pressure. The device comprises a corresponding monitoring device. The device can also have a mixing and feeding device with a vacuum mixing container which is connected to a vibration device. The device can comprise a ceramic construction platform having a porous structure. The component has a lattice structure with beads which are deposited at a distance from one another on a plane.

A process for producing a substantially dry product, according to various embodiments, may include receiving wet grain at a first screw The process includes receiving the wet grain at a second screw from the first screw. The process includes compressing the wet grain between the first screw and the second screw and dehydrating the wet grain when the wet grain is located within at least one zone of the first screw and the second screw to cause a physical property change to the wet grain.

An extrusion device including at least one extruder having a screw cylinder, a screw shaft rotatably supported in the screw cylinder and an extruder outlet, an injection mould having an outlet nozzle determining the cross-sectional contour of the extruder, and an extrusion head arranged between the extruder outlet of the at least one extruder and the outlet nozzle of the injection mould, wherein at least one perforated plate arranged in the extruder head is provided, which has a plurality of passage openings, wherein the passage openings are designed to dam up extrusion material conveyed from the at least one extruder through the passage openings of the perforated plate differently into at least one first region of the perforated plate and at least one second region of the perforated plate, in such a way that the extrusion material is partly diverted from its preferential direction within a central section of the perforated plate, specifically increasingly into at least one edge section of the perforated plate.