An apparatus for depositing an extrudable substance comprises a bracket and a sleeve, comprising an inner tubular sleeve wall and an outer tubular sleeve wall. The sleeve is coupled to the bracket and is rotatable relative to the bracket. The apparatus also comprises a cartridge, comprising an inner tubular cartridge wall and an outer tubular cartridge wall. The cartridge is configured to be positioned between the inner tubular sleeve wall and the outer tubular sleeve wall. The apparatus also comprises a valve, configured to be communicatively coupled with the cartridge, a nozzle, configured to be communicatively coupled with the valve, a linear actuator to control flow of the extrudable substance from the valve to the nozzle, an annular plunger, positioned between the inner tubular cartridge wall and the outer tubular cartridge wall, and a push-lock pressure cap, configured to be hermetically coupled with the cartridge.

The invention relates to a die assembly for a pelletizing apparatus, the die assembly having a pressure regulating device that has a base member, a flow channel, and an annular channel. The base member has a fluid inlet side and a fluid outlet side. The flow channel is formed in the base member to provide a fluid-conducting connection between the fluid inlet side and the fluid outlet side. The annular channel section is connected to the flow channel in a fluid-conducting manner and formed in the region of the fluid outlet side. The invention is characterized by a flow cross-section regulating element for influencing a flow cross-section of the annular channel section. The regulating element is movable relative to the annular channel section and/or the flow channel.

An apparatus for depositing an extrudable substance comprises a bracket and a sleeve, comprising an inner tubular sleeve wall and an outer tubular sleeve wall. The sleeve is coupled to the bracket and is rotatable relative to the bracket. The apparatus also comprises a cartridge, comprising an inner tubular cartridge wall and an outer tubular cartridge wall, wherein the cartridge is configured to be positioned between the inner tubular sleeve wall and the outer tubular sleeve wall. The apparatus additionally comprises a valve, configured to be communicatively coupled with the cartridge, a nozzle, configured to be communicatively coupled with the valve, a linear actuator to control flow of the extrudable substance from the valve to the nozzle, an annular plunger, positioned between the inner tubular cartridge wall and the outer tubular cartridge wall, and a twist-lock pressure cap, configured to be hermetically coupled with the cartridge.

This disclosure describes co-extruded multilayer articles including at least one continuous layer and one discontinuous layer, as well as systems and techniques for the manufacture of co-extruded multilayer articles. For example, a co-extruded multilayer article is described that includes a body having a plurality of layers, where a first layer of the plurality of layers is formed from a first material and is continuous along a longitudinal axis of the body, and a second layer of the plurality of layers is formed from a second material and is discontinuously co-extruded along the longitudinal axis.

A system is disclosed for use in additively manufacturing a composite structure. The system may include a head configured to discharge a composite material including a matrix and a plurality of continuous reinforcements. The system may also include a weave mechanism configured to selectively adjust a pattern of weaving of the plurality of continuous reinforcements occurring inside of the head.

One or more embodiments of the present invention provide an apparatus for applying a mixture of a first compound and a second compound, the apparatus comprising a first extruder for processing a first compound and a second extruder for processing a second compound, wherein the outlet from the first extruder is in fluid communication with a first channel of a housing, and the outlet from the second extruder is in fluid communication with a second channel of the housing, wherein a gear pump is positioned in each channel, wherein a nozzle is in fluid communication with an outlet of the first channel and an outlet of the second channel, and a coextruded continuous strip is produced. The ratio of the first compound to the second compound may be adjusted instantaneously.

An extruder assembly includes a rolling assembly. An extrusion block includes a plurality of extruding ports that receive an extrudable material from the rolling assembly. A regulating mechanism is positioned within, above, or otherwise near each extruding port of the plurality of extruding ports. The regulating mechanism is operable with respect to the rolling assembly to modify a flow of extrudable material through each respective extruding port.

A method is disclosed for controlling an additive manufacturing system. The method may include causing a head to discharge composite material along a first trajectory, and activating a cure enhancer to at least partially cure composite material discharging from the head along the first trajectory. The method may also include selectively deactivating the cure enhancer as the head nears a corner location, moving the head to a second trajectory after the head reaches the corner location, and reactivating the cure enhancer after moving the head to the second trajectory.

A system is disclosed for use in additively manufacturing a composite structure. The system may include a head configured to discharge a composite material including a matrix and continuous reinforcement. The system may also include a shutter mechanism mounted to the head and configured to grasp the continuous reinforcement after discharge from the head.

The invention relates to additive manufacturing technologies and can be used for manufacturing parts and structures of composite materials reinforced by continuous fibers. The technical result is improving physical and mechanical characteristics and reducing the weight of products having a complex shape made of composite materials.

The technical result is achieved by a print head containing a mechanism for supplying a plastic filament, a mechanism for supplying a reinforcing fiber, a mechanism for cutting the reinforcing fiber, a feed tube for the plastic filament, feed tubes for the reinforcing fiber and a heating unit. Furthermore, the heating unit contains a heater, a thermocouple or thermoresistor, and two inlet channelsa channel for the reinforcing fiber and a channel for the plastic filamentand a nozzle having an outlet channel for the reinforced plastic. Furthermore, the channel for the plastic filament is connected to the channel for the reinforcing fiber inside the heating unit, while the inlet channel for the reinforcing fibre is arranged coaxially with the outlet channel for the reinforced plastic. The invention makes it possible to increase the physical and mechanical characteristics of the product, to reduce the weight of the product, to reduce the cost of manufacture of complex shape products from composite materials.