A method and a device is disclosed for jet-packing moulding a polymer pipeline. During a spiral winding stack moulding process, a pipeline is continuously moulded by embedding the melt in a moulded pipe blank under the conjunction of the jetting welding effect produced by the melt and the shaping effect of partial calendering. The device includes an extruder, a melt jetting mechanism, a partial calendering mechanism and a pipe diameter shaping and adjusting mechanism. The melt jetting mechanism is arranged at the extrusion end of the extruder and embedded in a moulded pipe blank. The partial calendering mechanism and the pipe diameter shaping and adjusting mechanism are distributed on the wall of the pipe blank in the circumferential direction. The partial calendering mechanism is arranged at the corresponding position of the melt jetting mechanism.

A die is provided for extruding elongate particles suitable for use in catalysis. The die comprises a plurality of channels extending from an inlet to an outlet. From the inlet to the outlet each channel comprises a first section with a helical bore with a non-circular cross-section, and a second section with a cylindrical bore. The cylindrical bore of the second section which has a diameter equal or greater than that of the first section. The second section is at least twice as long as a diameter of the first section.

The present disclosure relates to a device and method for additive manufacturing, the device having an extrusion nozzle and a printing surface, wherein the extrusion nozzle is configured to deposit material onto a printing surface, and the printing surface is configured to rotate about a primary axis, the primary axis being normal to a centroid of the printing surface, the printing surface also being tiltable.

A method for manufacturing a Z-directed component for insertion into a mounting hole in a printed circuit board according to one example embodiment includes simultaneously extruding a plurality of materials according to the structure of the Z-directed component to form an extruded object and forming the Z-directed component from the extruded object. In one embodiment, the extruded object is divided into individual Z-directed components. In one embodiment, the timing of extrusion between predetermined sections of one of the materials is varied in order to stagger the sections in the extruded object.

A concrete dowel placement system and methods for making the same. The system allows for accurate and easy substantially-parallel or parallel placement of slip dowels within sections of concrete so that adjacent sections of concrete may be allowed to undergo thermal expansion and contraction while remaining in a common plane without cracking or faulting. The system includes a coupler and a sheath. The sheath is configured to be slidably extensible over the coupler and may be held to the coupler by friction. An outer surface of the sheath may be textured. Additionally, a method of constructing the concrete dowel placement system includes extruding material to form two tubes of different sizes. The tubes are then attached to each other, then material is extruded or injection molded to form a sheath. Alternatively, construction may include extruding material to form a tube, then removing some of the material from the tube in order to form a coupler.

One describes a railroad sleeper (1) for fixation of at least a pair of rails (2,2) of a railroad network, comprising a contact surface (3), wherein each rail of the pair of rails (2,2) is fixed spaced apart from each other, the railroad sleeper (1) being configured by comprising a hollow sector (4) delimited by association of the contact surface (3) with the anchorage walls (5,5), thus establishing a free portion (17) adjacent to the anchorage walls (5,5) and opposite the contact surface (3). One further describes an embodiment in which the hollow sector (4) of the railroad sleeper is delimited by a support surface and the process of manufacturing a railroad sleeper.

An extruder die designed to produce a spiral corn-based snack food product with consistent, tight spiral pitch and the resultant food product. The extruder die has a center post parallel to the flow path along with three cone-shaped receiving ports arranged in a cloverleaf pattern around the center post. The die has three curved slots on the output side of the die which are in fluid communication with the cone-shaped receiving ports. At the distal end of each of these slots is a semi-circular tip. The tip has a diameter larger than the width of its associated slot. Further, the tip is located at the apex of a cone-shaped receiving port with which it is in fluid communication, thus providing for the highest flow velocity of the extrudate through the tip. The resultant flow profile produces the consistent spiral shape of the snack product produced by the die design described.

A method is disclosed for continuously manufacturing a composite hollow structure. The method may include continuously coating fibers with a matrix, and revolving matrix-coated fibers about a non-fiber axis. The method may also include diverting the matrix-coated fibers radially outward away from the non-fiber axis, and curing the matrix-coated fibers.

An apparatus of manufacturing a rubber member includes an extruder; a mouthpiece; and a support surface which faces the mouthpiece in an opposed manner. The support surface and the mouthpiece are moved relative to each other thus molding a rubber member on the support surface. The apparatus further includes: a rubber pool portion formed between the mouthpiece and the support surface; and a closing surface having an inclined surface shape and capable of closing a moving-direction front side of the rubber pool portion. A rubber material is ejected from an ejection port in a state where the rubber pool portion is closed by the closing surface, the support surface and the mouthpiece are moved relative to each other after the rubber pool portion is filled with the rubber material, and a lamination starting end of the rubber material is pressed to the closing surface thus molding the lamination starting end into an inclined surface and, thereafter, the closing surface is moved in a direction away from the support surface.

A concrete dowel placement system and methods for making the same. The system allows for accurate and easy substantially-parallel or parallel placement of slip dowels within sections of concrete so that adjacent sections of concrete may be allowed to undergo thermal expansion and contraction while remaining in a common plane without cracking or faulting. The system includes a coupler and a sheath. The sheath is configured to be slidably extensible over the coupler and may be held to the coupler by friction. An outer surface of the sheath may be textured. Additionally, a method of constructing the concrete dowel placement system includes extruding material to form two tubes of different sizes. The tubes are then attached to each other, then material is extruded or injection molded to form a sheath. Alternatively, construction may include extruding material to form a tube, then removing some of the material from the tube in order to form a coupler.