摘要:
An ultrasonically vibrated die ring (2) for forming tubular metal workpieces comprises a flat interface (14) for connecting an ultrasonic transducer (22) to the die ring (2). A first rib (20) projects outwards along part of a circumference of the die ring (2) on one side of the interface (14). A similar second rib (18) may be disposed along a circumference on the other side of the interface (14). The first rib (20) and the optional second rib (18) at the circumferential position of the transducer interface (14) help to keep the interface (14) flat and maintain a good connection with the transducer (22) as the die ring (2) vibrates in a radial bending resonant mode.
摘要:
A method of forming a metal container (40) comprises: narrowing a first top section (42) of the container (40) in at least one narrowing step, wherein after narrowing the first top section (42), the first top section (42) has a first top section minimum outer diameter (44); and narrowing a second section (46) of the metal container (40) after narrowing the first top section (42), wherein after narrowing the second section (46), the second section (46) has a second section minimum outer diameter (48); wherein the second section (46) is below the first top section minimum outer diameter (48) and wherein the second section minimum outer diameter (48) is larger than the first top section minimum outer diameter (44). In some embodiments, the second section (46) is below the first top section minimum outer diameter (44). In some embodiments, the second section (46) of the metal container (40) is necked with a necking die (32). In some embodiments, a minimum inner diameter (88) of the working surface of the necking die (92) is greater than the first top section minimum outer diameter (84). In some embodiments, the step of narrowing a second section (86) of the metal container (80) to a second section minimum outer diameter (88) comprises passing the necking die (92) beyond the first top section minimum outer diameter (84).
摘要:
A shaped metal container comprising less metal than prior art shaped metal containers while still able to handle sufficient axial load and undergo shaping processes, including necking, without wrinkling, buckling, collapsing or other physical defect is disclosed. Processes for shaping a metal container having a sidewall of variable thickness, wherein a portion of the sidewall having a variable thickness is shaped using a die or dies are also disclosed.
摘要:
A machine arrangement including a vacuum transfer turret assembly configured to releasably hold one or more containers and to rotate the one or more containers about the turret assembly when the one or more containers are held by the turret assembly. The turret assembly includes a shaft assembly, a starwheel assembly, and a vacuum assembly. The starwheel assembly is releasably secured to the shaft assembly. The turret assembly is adapted to, when the starwheel assembly is secured to the shaft assembly, rotate the shaft assembly to rotate the starwheel assembly relative to the vacuum assembly and when the starwheel assembly is rotatably released from the shaft assembly, enable movement of the starwheel assembly and the vacuum manifold along the shaft assembly towards and away from the vacuum assembly.
摘要:
A turret for an article processing machine assembly includes a turret main body, a sliding ram assembly, and an air manifold device. The air manifold device is connectable to the turret main body and provides pressurized air through a pressurized air pathway system. The pressurized air pathway system includes a turret air passage extending from the air manifold through the turret body to the sliding ram assembly, and a ram air passage that supplies the pressurized air to an article in the machine assembly. A valve mechanism is positioned between one end of the turret body air passage and a first end of the ram air passage. The valve mechanism includes a slidable disc that seals the connection between the turret body air passage and the ram air passage.
摘要:
The method for forming a neck part (1b) on a cylindrical can body (1) comprises a narrowing step in which tensile forces are introduced into the can wall in the longitudinal direction of the can and interact with a deforming tool (2, 13, 15, 26, 34, 37) in such a way that an area of the can wall is deformed, this area being deviated about a contact area of the deforming tool (2, 13, 15, 26, 34, 37). The tensile forces interact with the deforming tool (2, 13, 15, 26, 34, 37) in the can wall in such a way that volume elements of the can wall area to be deformed extend at least partially in an axial direction. If the deforming tool (2, 13, 15, 26, 34, 37) is a ring (2, 37) that is adapted to the shape of the can, the contact area is ring-shaped and is moved in relation to the can body (1) in the direction of the can axis (a) during the deformation process. If the deforming tool (2, 13, 15, 26, 34, 37) is a rotating roller (13, 26) or a ring (15, 34) that rolls on the can body (1), the contact area is formed around a contact point and is moved in relation to the can body (1) in a circumferential direction during the deformation process. The deforming tool (13, 15) can be pressed (radially inwards) against the wall of the cylindrical can body (1) with its contact area in order to achieve the deviation. A device for exerting force (5, 9, 27, 27', 45) is provided for introducing the tensile forces, said device (5, 9, 27, 27', 45) enabling forces to be exerted in the area of the open can end between the deforming tool (2, 13, 15, 26, 34, 37) and a fixing device (13, 16, 17, 24, 33, 36).
摘要:
A thin-walled hollow body open at one end, e.g. a metal can body (76), is given a terminal neck (74) by engaging a primary chuck nose (22) sealingly in the open end and pressurising the body internally to pre-stress it and hold it against a lift pad (16); the latter is lowered so that the sidewall end portion (80) is progressively rolled by forming rolls (46) to form the neck partly in free space (38) and partly against a secondary chuck nose (30) which maintains the pressure seal when the seal between the sidewall and the primary chuck nose is broken. In a modification, the rolls (46) may be withdrawn early, so as to leave a terminal flange on the can body.
摘要:
An ultrasonically vibrated die (1) comprises a generally cylindrical die ring (2) supported by a coaxial resonant mounting tube (4). The die ring (2) is vibrated in a radial bending (RB0) mode of vibration, in which an end surface (5) of the die ring (2) oscillates between a concave and a convex state. The mounting tube (4) joins the end surface (5) of the die ring (2) at a radius R where the amplitude of the oscillation of the end surface (5) is at a minimum, in order to reduce transmission of the vibration into the mounting tube (4).