A hybrid extrusion press is provided with electric motors and hydraulic assist cylinders to cause a container holder to slide, wherein connecting rods are fastened to a container holder, the hydraulic assist cylinders have piston rods and gate devices connecting or disconnecting the connecting rods and the piston rods, and the gate devices are provided with hollow members fastened to the piston rods, enlarged diameter parts provided at single ends of the connecting rods and moving back and forth inside hollow parts of the hollow members, and locking parts provided at the hollow members and locking the enlarged diameter parts.

The invention is directed to a machine for compacting agricultural fibrous matter into a board, comprising a hopper for receiving the agricultural fibrous matter; an extruder comprising an extrusion passage downstream of the hopper; and a ram configured for moving in a reciprocal manner along the extrusion passage; wherein the extrusion passage further comprises a movable wall configured for moving between a feed position, opening the extrusion passage to the hopper, and an extrusion position, closing the extrusion passage.

A multi-chamber pellet die system to improve and increase analysis pellet manufacturing capabilities by allowing for multiple pellets or biomaterial scaffolds to be fabricated simultaneously.

A multi-chamber pellet die system to improve and increase analysis pellet manufacturing capabilities by allowing for multiple pellets or biomaterial scaffolds to be fabricated simultaneously.

The invention relates to a method for coaxially extruding an extruded product. Hereby, an extruding device comprises the following: a receiver (7); a first receiver bore (5) which is formed in the receiver (7) and in which a first punch (10) is arranged; a second receiver bore (6) which is formed in the receiver (7) inside the first receiver bore (5) and coaxially therewith and in which a second punch (11) is arranged; and a mold (15) having a mold cavity (14) which is connected to the first and the second receiver bore (5, 6). In the method, the following is provided: arranging a first material billet (8) of a first material (2) in the first receiver bore (5); arranging a second material billet (9) of a second material (3) in the second receiver bore (6); and extruding an extruded product (1) in which the first and the second material (2, 3) are connected in a form-fitting and integrally bonded manner. The extrusion comprises: advancing the first punch (10) in the first receiver bore (5) in such a manner that the first material (2) is pressed into the mold cavity (14) of the mold (15) and thereby shaped; advancing the second punch (11) in the second receiver bore (6) in such a manner that the second material (3) is pressed into the mold cavity (14) of the mold (15) and thereby shaped, the second punch (11) being displaced coaxially with the first punch (10); and connecting the first and the second material in an integrally bonded and form-fitting manner to form an extruded product (1) in the mold (15) in such a manner that the first material (2) surrounds the second material (3) in the extruded product (1). The invention also relates to a device for coaxially extruding an extruded product.

A system and method for an improved material flow through an extrusion machine by altering the material properties in a magnetic field are provided. The electromagnetic extrusion system includes a ram that is moved into a chamber containing an extrusion material to force the extrusion material out of an opening defined, at least in part, by a die to create an extrusion with a cross-sectional shape corresponding to the predetermined shape of the opening. An electromagnetic winding of electrically conductive material is embedded within a tool retainer block surrounding the container and is helically wound about the chamber and carries a DC electrical current to generate a magnetic field having a magnetic flux density of at least 2 Tesla within the extrusion material to dissipate dislocation defect structures in the extrusion material being extruded via the magnetoplasticity effect. The magnetic field therefore provides for reduced flow stress on the tooling.

A pressing head (100) for a device for pressing material to be pressed, e.g., an extrusion press for pressing chips. The pressing head (100) comprises at least two pressing channels (1, 1), each having an inlet opening (11, 11) and an outlet opening (12, 12). Each pressing channel (1, 1) has a stationary supporting element (2, 2) and a movable pressing element (3, 3). The pressing element (3, 3) is movable on one side, preferably relative to the supporting element (2, 2). A cross-section (QA) of the pressing channel, at the outlet opening of the pressing channel, can be varied relative to the cross-section (QE) of the pressing channel, at the inlet opening of the pressing channel.

A pressing head (100) for a device for pressing material to be pressed, e.g., an extrusion press for pressing chips. The pressing head (100) comprises at least two pressing channels (1, 1), each having an inlet opening (11, 11) and an outlet opening (12, 12). Each pressing channel (1, 1) has a stationary supporting element (2, 2) and a movable pressing element (3, 3). The pressing element (3, 3) is movable on one side, preferably relative to the supporting element (2, 2). A cross-section (QA) of the pressing channel, at the outlet opening of the pressing channel, can be varied relative to the cross-section (QE) of the pressing channel, at the inlet opening of the pressing channel.

A system for making blocks for gravity energy storage includes an extrusion press machine with a receiving chamber for receiving raw material, a compaction chamber and a pressing wall driven by a piston to push the raw material into the compaction chamber to compact the material to form a block. One or more of a top wall, opposite side walls and the pressing wall are moved away from the a center of the compaction chamber to allow the block to elastically expand prior to exiting the compaction chamber.

A system for making blocks for gravity energy storage includes an extrusion press machine with a receiving chamber for receiving raw material, a compaction chamber and a pressing wall driven by a piston to push the raw material into the compaction chamber to compact the material to form a block. One or more of a top wall, opposite side walls and the pressing wall are moved away from the a center of the compaction chamber to allow the block to elastically expand prior to exiting the compaction chamber.