Abstract: A formed material is manufactured by performing forming including at least one drawing-out process and at least one drawing process performed after the drawing-out process. A punch 31 used in the drawing-out process is formed to be wider on a rear end side than on a tip end side. By pushing a raw material metal plate into a pushing hole 30a together with the punch 31, ironing is performed on a region of the raw material metal plate corresponding to a flange portion.
May 14, 2014
Date of Patent:
June 6, 2017
Nisshin Steel Co., Ltd.
Naofumi Nakamura, Yudai Yamamoto, Jun Kurobe
Abstract: A method of forming a hollow curled portion on a hollow body, the curled portion being oriented from one end to the other end of the hollow body. The method includes a bending step of curving an end of the hollow body toward another end of the hollow body, thereby forming a curled portion, an ironing step of ironing the curled portion with a die, and a recurving step of stopping the die from ironing the curled portion and allowing the curled portion to recurve under its own resiliency in a direction opposite to the direction in which the end of the hollow body has been curved. The ironing step and the recurving step are repeated.
Abstract: In the area of manufacturing peel-off lids (28) out of lid rings with a peel-off foil (25) sealed on it, a part of the sealing surface (26) is bent up in the direction of the lid edge in order to tension the sealing surface with the peel-off foil. A clamping tool (30, 31) is provided in order to clamp the sealing surface with the peel-off foil and a pressing tool (35) in order to bend up the unclamped sealing surface section (26?).
Abstract: Drum for a washer and a dryer including a cylindrical metal body part, reduced parts at opposite end parts of the body part, each having a diameter smaller than a diameter of the body part, and bent parts each having a folded edge of the reduced part, thereby providing a drum that can prevent occurrence of vibration and noise.
Abstract: Disclosed is a device and method for forming a curl in a closable container. A process of forming a pre-curl is used, which is followed by a second separate step of forming the completed curl. The two-step process provides for higher tolerances with respect to the shape of the curl that allows the curl to be used as a sealing surface for a recloseable metal bottle. A three-step process provides for even greater tolerances and reduces longitudinal forces by completing the curl using lateral forces. Also, a die curler is disclosed that has an eccentric motion that forms a curl in a single progressive curling process.
Abstract: A method and an apparatus for making cans from three pieces of a sheet metal, namely a bottom part, a body part and a closure, the method and apparatus enabling cost efficient production of cans in small batch sizes. The apparatus has means for forming a tubular can body from a blank of sheet material without internally supporting the tubular form. The apparatus further has means for subsequently forming the tubular can body into a cross sectional shape without the use of a dedicated press tool, means for beading, curling and flanging the can body and means for attaching the bottom part and the closure to the can body.
Abstract: A process for manufacturing a can with a polygonal cross-section and a can with a polygonal cross-section, the process comprising the steps of milling the cylindrical lateral wall of a tubular body (10), providing said wall with a plurality of circumferential ribs (20) which are continuous and axially spaced from each other and defined by a certain degree of radial plastic deformation of the respective circumferential region of the cylindrical lateral wall of the tubular body (10); expanding the formed tubular body (10), deforming it, in order to define longitudinal edges (12) in whose region the circumferential ribs (20) are eliminated; and double-seaming a bottom and an upper wall of the can to the tubular body (10). This process defines a can having any polygonal cross-section and circumferential ribs (20) on the lateral wall thereof, between the longitudinal edges (12).
January 11, 2000
Date of Patent:
March 30, 2004
Brasilata S.A. Embalagens Metalicas
Joao Vincente De Masi Tuma, Jose Augusto Oliveira Souza
Abstract: A process for manufacturing a cylindrical metal can having, on its side walls, projected portions and recessed portions. The projected portions are formed by forcing the side walls radially outwardly, and the recessed portions are formed by urging unprojected portions radially inwardly while the projected portions are being forced radially outwardly.
Abstract: An apparatus for flanging an edge of a can body includes a flanging tool which has an inner tool part having an outer circumferential flanging face for engaging an inner surface of a circumferential edge zone of the can body; an outer tool part surrounding the inner tool part and having an inner circumferential abutment face surrounding the flanging face for abutting a periphery of the can body edge during flanging of the can body edge by the flanging face; an axially hollow, non-rotatable spindle to which the outer tool part is affixed and which has a first axis; a rotary shaft received in the spindle and having a second axis coinciding with the first axis; and a shaft stub affixed to and extending from the shaft. The inner tool part is rotatably mounted on the shaft stub which has a central, third axis disposed at an inclination to the second axis.
July 8, 1997
Date of Patent:
December 29, 1998
Krupp Kunststofftechnik Gesellschaft mit beschrankter Haftung
Abstract: A method and an apparatus for the fabrication of a metal cylinder from a flat metal sheet is described. The cylinder is preferably, but not exclusively, for use in the construction of an outer casing for a hot water heater. Particularly, the method and apparatus is suitable for the fabrication of cylinders of different diameters with minor adjustments being necessitated to the assembly apparatus. A flat metal sheet is fed through a roll former where a curved sheet defining an unconnected cylinder having opposed overlapping free side edges is formed. Flanges are formed along the elongated edges of the cylinder with the flange of the outer overlapping edge being inturned and the flange of the inner overlapping edge being outturned.
Abstract: A process for producing sheet-metal jackets, especially for pallet containers with an inner container of a synthetic resin, wherein a rectangular cut-to-size sheet-metal blank, the narrow sides of which are folded over into rims, is bent into a tubular member (15), and the rims (11a, 12a) of the tubular member (15) are hooked together. From the interlocked rims (11a, 12a), a series of spaced-apart connecting straps (16) is shaped by cutting and embossing toward the outside in a series parallel to the rims (11a, 12a) while leaving undeformed the rims between the spaced-apart portions. The rims (11a, 12a) are locked with respect to each other by a wire (17) pulled through the connecting straps (16), and the thusproduced tubular member (15) is shaped on a stretching press into a sheet-metal jacket.
Abstract: A carousel type head revolving about a vertical axis and skirted by a fixed reaction sector is equipped with work stations, each comprising a system of brackets to support the cylindrical tin can and a mandrel consisting in a shaft with an interchangeable outer barrel of diameter notably less than the internal diameter of the can, by which the revolving metal body is pinned against the fixed sector to bring about its deformation; the mandrel and brackets of each station rise and fall synchronously in mutual opposition between respective limit positions, each traversing through a vertical distance substantially equal to half the height of the production can.
Abstract: An apparatus is described for positioning a can body in the form of a longitudinal seam welded cylinder which is provided with a tongue or the like projection at a predetermined point of its outer circuference, and which is to be further processed, for example shaped. The can body is received in a device in a spatially fixed manner and is rotated about its longitudinal axis. The rotational movement is stopped by a stop (48) or like sensor or obstacle in the path of the tongue, the position of the stop being so selected that the longitudinal seam of the body is then in a precisely defined position. The seam is thus detected in a simple manner by means of a tongue. It is thereby possible to ensure that when a circular cylindrical can body is, for example, further shaped into a parallelepiped body, the longitudinal seam is precisely in the middle of a narrow side of the parallelepiped body.
Abstract: In order to produce can bodies having a noncircular cross-section, preferably a rectangular cross-section with rounded corners, flat planar blanks are initially deformed in a deforming station by a plurality of similar bending tools, each for producing one respective bend, whereby a respective different bend is made at the same time at the various blanks of the stepwise timed advancing blanks. The bending tool includes a shaping member held stationary at the inside and having a curved outer surface end, furthermore, a roller supported in a supporting body and which is subjected to the action of a spring pressing against the supporting body in order to bend the blank located between the shaping member and pressing roller upwardly during movement by a lifting rod pivotably mounted at the supporting body. This proceeds simultaneously in all bending tools provided for one respective bend by a movable part of the deforming apparatus operating as a press.
Abstract: A system for forming a surface configuration, such as a neck and a flange, on a can body adjacent an open end thereof using a mandrel having an outer surface comprising generally cylindrical portions on each side of an annular recess which recess has a surface configuration corresponding to the neck and the flange to be formed. A resilient deformable object is located around the mandrel. A portion of a can body is placed between the mandrel and the resilient, deformable object which is then deformed so as to move a portion of the can body into conformation with the surface of the annular recess. At the same time, a force is applied to a portion of the portion of the can body being deformed to resist the movement thereof so that the portion of the can body in which the neck and flange is being formed is stretched and thinned as it is moved into conformation with the surface of the annular recess.
Abstract: An apparatus for deforming an existing external curl on a tubular side wall of a container to form a crushed curl through the use of a first die having an annular groove of generally semi-circular cross section which engages a peripheral inside and outside portion of the curl to prevent lateral spreading thereof, a second die includes a convex generally V-shaped annular surface which enters into the annular groove of the first die, an imaginary line diametrically intersecting the V-shaped convex surface is also generally coincident with an imaginary line diametrically intersecting the annular groove, and upon relative movement of the die such that the convex surface enters into the annular groove, a portion of the curl is crushed into a generally V-shaped configuration.
Abstract: A container and a method for making the same for a gas generating propellant such as used in vehicle air bag systems. The container comprises an elongated thin wall metal cylinder having a plurality of perforations extending substantially the length thereof. A hermetic liner is attached to the inner surface of the cylinder to seal the perforated area of the wall. The hermetic liner comprises a laminated plastic film and metal foil composite having a thickness less than that of the cylinder wall and being rupturable under the pressure of gas generated within the cylinder. The ends of the cylinder are closed by metal end caps.
Abstract: A metallic pressure vessel or container, made of a thin aluminum or aluminum alloy sheet coated with a resin suitably, used for a small size beer container. The vessel is composed of (a) a main body member of bottomed cylindrical form, with a bulge in the central part thereof precessed by a novel method, provided with at least three protrusions and recessed beads disposed therebetween alternately, for stable setting and reinforcing, and (b) a lid member, for covering the former body, which is made into an inverted bowl shape, with a mouth portion integrally formed for being crowned thereon, and provided with a plurality of small wave like patterns consisting of continuous and smooth hills and valleys. Those two parts are generally made by multiple deep-drawing processes and joined together by the double seaming method. The process of the mouth portion making is characteristic in its burling and curling processes.