US3653249A - Drawn and ironed containers - Google Patents

Drawn and ironed containers Download PDF

Info

Publication number
US3653249A
US3653249A US20268A US3653249DA US3653249A US 3653249 A US3653249 A US 3653249A US 20268 A US20268 A US 20268A US 3653249D A US3653249D A US 3653249DA US 3653249 A US3653249 A US 3653249A
Authority
US
United States
Prior art keywords
slot
rings
ironing
die block
tool pack
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US20268A
Other languages
English (en)
Inventor
Lloyd G Dunn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alcoa Corp
Original Assignee
Aluminum Company of America
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aluminum Company of America filed Critical Aluminum Company of America
Application granted granted Critical
Publication of US3653249A publication Critical patent/US3653249A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/18—Lubricating, e.g. lubricating tool and workpiece simultaneously
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B21D22/28—Deep-drawing of cylindrical articles using consecutive dies
    • B21D22/286—Deep-drawing of cylindrical articles using consecutive dies with lubricating or cooling means

Definitions

  • the invention provides a tool pack assembly for an ironing press which includes a die block having an open slot therein and an apertured cap at both ends of the slot, and having a plurality of ironing rings disposed in the slot with spacerlubricators therebetween.
  • An axially expandable hollow jack screw is disposed in the slot for locking the draw rings in position in co-axial alignment with the press mandrel.
  • the ironing rings and spacers in such a tool pack assembly can be quickly and easily changed by contracting the jack screw to release the rings and spacers so that worn rings can be lifted out of the slot for replacement with new ones.
  • Another object of the invention is to provide a tool pack assembly for an ironing press in which the ironing rings can be changed quickly.
  • a further object of the invention is to provide a tool pack assembly which facilitates quick and accurate co-axial alignment of the die orifices in the ironing rings with the press mandrel.
  • Another object of the invention is to provide a tool pack assembly which facilitates lubrication of the container body during ironing.
  • FIG. 1 is a top plan view illustrating an ironing press with an improved tool pack assembly secured therein;
  • FIG. 2 is an enlarged top plan view of the tool pack in the ironing press of FIG. 1;
  • FIG. 3 is a cross-section elevational taken along line III-III of FIG. 2;
  • FIG. 4 is a cross-section elevational taken along line IV--IV of FIG. 2.
  • an ironing press generally indicated by the numeral 10 including a press bed 12 and a reciprocating mandrel or ram 14, and having a removable tool pack assembly 16 secured in the press bed.
  • the tool pack assembly 16 comprises a steel die or holder block 18 with an open slot 20 therethrough for receiving ironing rings 22.
  • the block 18 serves as a bridge from the press frame or bed to provide a rigid structure to maintain the rings 22 in positive alignment with ram 14.
  • slot 20 is U- shaped with an arcuate bottom, and for a horizontal press like the one selected for illustration, opens upwardly to facilitate access to the slot from the top of the press.
  • Die block 18 may be secured on the press bed 12 with the comers of the press bed projecting into mounting recesses in the side of the die block, and with means such as bolts 26 securing the die block to the press bed. With the die block secured to the press bed, slot 20 in the die block is in alignment with the press mandrel 14. This alignment can be accomplished by a variety of means such as by machining the mating surfaces of the die block and press bed, by shirnming between the die block and press bed or by providing adjustable bolts and tapered mating surfaces on the press bed and the die block for relative positioning of the same.
  • holder block 18 is heat treated and stabilized before final grinding for accurate positioning and ring alignment.
  • Die block 18 has centrally apertured caps 24, 25 or other retaining means, secured to it on the ends of slot 20 by means of bolts 28.
  • End caps 24, 25 and die block 18 are machined so that the end caps fit on the die block with the faces on the end caps square or perpendicular to the inner surface of the slot 20 in the die block and to the longitudinal axis of ram 14.
  • a sizing or pre-draw ring 29 may be located in the aperture in the front end cap 24 on the entrance end of the die block 18, and mechanical strippers 31 may be located in the aperture in the rear end cap 25 as is hereinafter described.
  • Tool pack assembly 16 preferably includes three ironing rings 22, a spacer ring 32, two spacer-lubrication rings 34 and a hollow jack screw 36, all of which are transversely disposed in the slot in the die block.
  • Ironing rings 22, selected for illustration each comprises a steel ring 30 which is shrink fitted on a carbide insert 33.
  • the steel ring 30 is preferably large enough in diameter and has a suflicient section mass to resist significant expansion of the ring due to the stresses produced therein during ironing.
  • a conventional carbide insert 33 has a die orifice therethrough including an entry portion 38, a land 40 and a relief portion 41, although various other known ring profiles may be also employed.
  • the die orifices are of decreasing diameter progressing from the first ring adjacent the entrance end of the tool pack to the third ring adjacent the exit end of the tool pack.
  • the inside diameter of the working land 40 of each of the rings is a few thousandths of an inch less than the diameter of the mandrel plus the double thickness of the container wallas it enters such ring.
  • the rings are spaced so that a container body will be worked or ironed by only one ironing ring 22 at any one time.
  • the rings are therefore spaced so that a container body will have moved completely through the working land 40 of the preceding ironing ring before moving into the working land of the next ring. Since the wall of the container is elongated as it is ironed, rings 2 and 3 are spaced further apart than are rings 1 and 2 in order to avoid working of the container wall in more than one ironing ring at any one time. Such spacing depends on the length of the cup being ironed, the side wall thickness of the cup, and the precent reduction in thickness of the side wall which is being effected.
  • Spacer 32, lubrication rings 34 and jack screw 36 are selected with appropriate thicknesses to properly space the ironing rings 22.
  • a small radial clearance is provided between the rings and the sides of the slot. With rings approximately 6 inches in diameter, a radial clearance of approximately 0.0025 inch has been found to provide an adequate clearance for such purposes.
  • Jack screw 36 is adapted to be axially expanded and contracted to lock the ironing rings 22, spacers 32, 34 and jack screw 36 in the slot 20 between end caps 24, 25 and comprises a sleeve 42 which is threaded at 44 for assembly with a collar 46. By turning collar 46 relative to sleeve 42, the jack screw can be axially expanded and contracted to either lock the assembly together or release the assembly for replacement of rings. Adjustment holes 48 are provided in sleeve 42 and collar 46 to facilitate such relative rotation of the members.
  • the front end cap 24 and each lubrication ring 34 has a feed hole therein which communicates with an annular lubrication chamber 52 and an annular feed passageway 54 around the die orifice.
  • the feed passageway 54 is narrower than is chamber 52 to ensure that lubricant is supplied onto the surface of a container body around its complete periphery as will be hereinafter explained.
  • Lubrication lines are attached to the feed holes in the lubrication rings, and drain slots 56 are provided in spacer 32 and jack 36 for draining lubricant, and extraneous matter carried by the lubricant, through drain openings 58 in the die block and into a drain tank or the like not shown. Extraneous matter carried by the lubricant may include dirt andparticles or fragments of the container bodies which may be clipped therefrom during ironing.
  • the tool pack assembly further includes a cover plate 60 with a handle 62 attached thereto.
  • This plate 60 is positioned over the rings and spacers in slot 20 in the die block 18, and is secured on the die block by means of bolts 64. Referring to FIG. 2, cover plate 60 is partially cut away to provide access to the lubrication feed holes in lubrication rings 34 and to the adjustment holes in jack 36. Cover plate 60 is designed primarily to be a safety shield over the rings.
  • tool pack assemblies have required considerable time to change ironing rings since they have had no quick and easy means for securing and aligning the rings in the assemblies.
  • Tool pack assemblies have usually required removal and/or disassembly of the complete tool pack in order to change either one ironing ring or all the ironing rings.'The lubrication connections and the locking and alignment means provided in such assemblies have made it difficult to change tools in less than 10 to 15 minutes.
  • the present invention greatly simplifies tool changes and has permitted reducing the time for such changes to approximately two minutes or even less. In the present invention, any one or all of the ironing rings can be removed and replaced without complete removal and/or disassembly of the entire tool pack.
  • the two bolts 64 on the cover plate are removed and the cover plate is lifted off the die block 18.
  • Jack screw 36 is then contracted to free the jack screw and the rings so that worn or broken ironing rings can be lifted out of the slot in the die block and replaced with new rings.
  • the lubrication rings 34 may also be lifted out of slot 20, with or without the lubrication lines attached, but such removal is not necessary for changing ironing rings.
  • the slot 20 and the ironing rings 22 are sufficiently close in relative diameters for the rings, as loosely positioned in the slot, to be in approximate alignment with the mandrel, but leaving a smallclearance around the rings so that they can shift and/or expand in the slot.
  • a radial clearance of approximately 0.0025 inch between the rings and the slot has been found to provide sufiicient space "fo'r thermal expansion of the rings as previously discussed and to provide the desired preliminary alignment with space for shifting into final co axial alignment with the mandrel.
  • auxiliary means such as shims or the like maybe provided for effecting approximate initial alignment of the rings in theslot'o
  • jack screw 36 is partially expanded to a point where the rings are held snugly in position, but loose enough for them to shift in response to a positive force applied thereagainst.
  • Mandrel 14 with a container body thereon is then run through the die assembly.
  • the tool pack assembly 16 and the mandrel 14 may be connected to a lubricant supply system, not shown, which is employed primarily to reduce friction during ironing, but which may also be used to control the temperature of the mandrel and ironing rings.
  • the system may include means for heating or cooling the lubricant during operation, as well as means for cleaning the lubricant.
  • the lubricant is initially heated prior to commencement of ironing and then cooled during continuous operation to maintain the lubricant, and thus the tools, at a relatively constant temperature.
  • One suitable lubricant that has been used is an emulsion of oil in water, but the invention is not limited to the use of such lubricant.
  • the lubrication system may include various pumps, filters, gauges, valves and lubrication lines which are connected to the front end cap, the lubrication rings and the mandrel for circulation therethrough.
  • the front end cap 24 and the two lubrication rings 34 are particularly adapted for supplying lubricant around the entire periphery of a container body as it moves through the tool pack assembly.
  • the provision of an annular chamber 52 in the rings followed by an annular passageway 54 which is narrower than chamber 52 assures that the chamber will be completely filled with lubricant for application to the surface of a container via passageway 54.
  • the narrow passageway produces a pressure differential between the chamber 54 and the mouth of the passageway, which in turn causes the lubricant to completely fill the chamber for supply around the entire periphery of a container.
  • the mandrel 14 may also have a passageway through it which is connected to an airline and to either the atmosphere or a vacuum system for venting of the inside of a drawn cup as mandrel 14 is moved into the cup, and to a compressed air system to effect stripping of an ironed container from the mandrel at the completion of the ironing stroke as described in my U.S. Pat. application Ser. No. 20,297, filed Mar. 17, 1970, for Method and Apparatus for Stripping Container Bodies from a Reciprocal Mandrel," and executed and filed concurrently herewith.
  • a drawn cup is positioned, by means not shown, at the entrance end of the tool pack assembly, with the cup open toward mandrel 14.
  • the cup to be ironed preferably has an inside diameter which is approximately 0.025 inch greater than the outside diameter of mandrel 14 so that the mandrel can be moved into the cup without difficulty.
  • lubricant from the lubrication system is sprayed onto the inner and outer surfaces of the cup.
  • the mandrel 14 then moves into the cup and carries it into and through the tool pack assembly 16.
  • pre-draw ring 29 centers the cup on mandrel l4 and draws the side wall of the cup inward.
  • the pre-draw ring may, if desired, draw the side of the cup into intimate contact with the mandrel.
  • additional lubricant is supplied from annular passageway 54 around the exit end of the draw ring onto the outer surface of the cup.
  • the cup then moves through the three ironing rings 22 which progressively thin and elongate the side wall of the cup to form a container body. Additional lubricant is applied to the cup during such ironing by the two lubrication rings 34.
  • the ironed container body may be stripped from the mandrel 14 by means of compressed air as is described in my above identified U.S. patent application, or by other means known in the art.
  • Mechanical strippers 31 may be provided in end cap 25 for such stripping or as a safety check for air stripping as is described in said application.
  • the present invention provides an improved tool pack assembly wherein the ironing rings can be quickly and easily removed for inspection or replacement, and which incorporates an efficient and simple lubrication system which does not interfere with tool changes.
  • a hydraulic jack could be used in a tool pack assembly in place of a jack screw so that expansion of the ironing rings, spacers, etc. due to heat or the like could be compensated for by controlling the hydraulic pressure in the jack.
  • the jack By controlling the pressure in a hydraulic jack, the jack could be compressed in response to expansion of the rings in the tool pack assembly.
  • the end caps on the tool pack assembly could also be integral parts of the die block.
  • the slot in the die block could be cut into the block leaving metal on both ends of the slot to retain the rings and spacers in the slot.
  • a clamp or clamps could also be used for such purpose.
  • the cover plate could be hinged or otherwise restrained on one edge and a clamp could be employed to lock or secure the opposite edge of the plate against accidental removal.
  • a tool pack assembly secured to the press bed comprising:
  • a die block having an elongated open slot therein with its longitudinal axis aligned with the press mandrel;
  • apertured means at the ends of the slot in said die block for retaining said ironing rings in the slot between said means while permitting the press mandrel to pass therethrough;
  • adjustable means disposed in the slot in the die block between said apertured end means for applying pressure, either directly or indirectly, against said ironing rings parallel to the longitudinal axis of the slot to secure the ironing rings in the slot whereby they can be quickly and easily replaced and aligned.
  • a tool pack assembly as set forth in claim 1 which includes a pre-draw ring secured therein on the entrance end of the assembly.
  • a tool pack assembly as set forth in claim 1 which includes at least one centrally apertured lubrication ring in the slot in said die block.
  • a tool pack assembly as set forth in claim 3 in which the lubrication ring has an annular lubrication chamber leading into an annular passageway around the entire periphery of the central aperture in the ring for feeding lubricant onto a container body as it moves through the ring.
  • a tool pack assembly as set forth in claim 1 in which said apertured retaining means at the ends of the slot in the die block have oppositely facing planar surfaces each of which is normal to the axis of the press mandrel for abutment and securement of said ironing rings against said surfaces in axial alignment with the mandrel.
  • a tool pack assembly as set forth in claim 1 in which a small radial clearance is provided between said ironing rings and the slot in the die block.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Press Drives And Press Lines (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
US20268A 1970-03-17 1970-03-17 Drawn and ironed containers Expired - Lifetime US3653249A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US2026870A 1970-03-17 1970-03-17

Publications (1)

Publication Number Publication Date
US3653249A true US3653249A (en) 1972-04-04

Family

ID=21797662

Family Applications (1)

Application Number Title Priority Date Filing Date
US20268A Expired - Lifetime US3653249A (en) 1970-03-17 1970-03-17 Drawn and ironed containers

Country Status (6)

Country Link
US (1) US3653249A (enrdf_load_stackoverflow)
JP (1) JPS5130024B1 (enrdf_load_stackoverflow)
DE (1) DE2112866C3 (enrdf_load_stackoverflow)
FR (1) FR2083354B1 (enrdf_load_stackoverflow)
GB (1) GB1297716A (enrdf_load_stackoverflow)
SE (1) SE362802B (enrdf_load_stackoverflow)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2639595A1 (de) * 1975-09-02 1977-03-03 Standun Schmierduese sowie schmier- und kuehlverfahren
US4183237A (en) * 1977-08-26 1980-01-15 Carmet Company Method of making aluminum cans
US4541265A (en) * 1979-06-07 1985-09-17 Purolator Products Inc. Process for forming a deep drawn and ironed pressure vessel having selectively controlled side-wall thicknesses
US5020350A (en) * 1989-06-19 1991-06-04 Aluminum Company Of America Apparatus and method for lubricating and cooling in a draw and iron press
US5555761A (en) * 1995-05-30 1996-09-17 Minster Machine Co Bodymaker tool pack
US5626049A (en) * 1985-03-15 1997-05-06 Weirton Steel Corporation Draw-process systems for fabricating one-piece can bodies
US5632171A (en) * 1996-02-01 1997-05-27 Reynolds Metals Company Ironing press laminar flow lubrication ring
US6598451B2 (en) 2001-11-02 2003-07-29 Sequa Can Machinery, Inc. Internally cooled tool pack
US20090218457A1 (en) * 2003-09-16 2009-09-03 Shinji Oishi Shell type needle roller bearing, support structure for compressor spindle, and support structure for piston pump driving portion
US20110114128A1 (en) * 2008-03-26 2011-05-19 Jfe Steel Corporation Ironing method and ironing apparatus

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2367676A1 (fr) * 1975-05-01 1978-05-12 Metal Box Co Ltd Fabr
JPS58187335U (ja) * 1982-06-09 1983-12-13 寺尾　重信 立体式収納庫
NL8701623A (nl) * 1987-07-10 1989-02-01 Hoogovens Groep Bv Werkwijze en inrichting voor het wandstrekken van een eendelig busvormig lichaam, alsmede aldus gevormd lichaam.
FR2668727A1 (fr) * 1990-11-05 1992-05-07 Pechiney Rhenalu Dispositif permettant l'extraction aisee de recipients etires et son utilisation.
WO1993022079A1 (fr) * 1992-05-04 1993-11-11 American National Can Company Dispositif pour l'etirage de boites metalliques ou metalloplastiques
US5249448A (en) * 1992-07-09 1993-10-05 Ball Corporation Redraw carriage for crank and slide press

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1370116A (en) * 1920-06-12 1921-03-01 Johnson Aron Adjustable die for punch-presses
US1742795A (en) * 1926-04-28 1930-01-07 Gen Motors Corp Apparatus for making pistons
US3359775A (en) * 1965-08-02 1967-12-26 Kaiser Aluminium Chem Corp Apparatus for forming container bodies
US3399558A (en) * 1966-02-02 1968-09-03 Kaiser Aluminium Chem Corp Die assembly

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2506161A (en) * 1947-06-14 1950-05-02 Remington Arms Co Inc Die holder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1370116A (en) * 1920-06-12 1921-03-01 Johnson Aron Adjustable die for punch-presses
US1742795A (en) * 1926-04-28 1930-01-07 Gen Motors Corp Apparatus for making pistons
US3359775A (en) * 1965-08-02 1967-12-26 Kaiser Aluminium Chem Corp Apparatus for forming container bodies
US3399558A (en) * 1966-02-02 1968-09-03 Kaiser Aluminium Chem Corp Die assembly

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2639595A1 (de) * 1975-09-02 1977-03-03 Standun Schmierduese sowie schmier- und kuehlverfahren
US4223544A (en) * 1975-09-02 1980-09-23 Standun, Inc. Die lubricant nozzle for use in can bodymakers and the like
US4183237A (en) * 1977-08-26 1980-01-15 Carmet Company Method of making aluminum cans
US4541265A (en) * 1979-06-07 1985-09-17 Purolator Products Inc. Process for forming a deep drawn and ironed pressure vessel having selectively controlled side-wall thicknesses
US5626049A (en) * 1985-03-15 1997-05-06 Weirton Steel Corporation Draw-process systems for fabricating one-piece can bodies
US5020350A (en) * 1989-06-19 1991-06-04 Aluminum Company Of America Apparatus and method for lubricating and cooling in a draw and iron press
US5555761A (en) * 1995-05-30 1996-09-17 Minster Machine Co Bodymaker tool pack
US5632171A (en) * 1996-02-01 1997-05-27 Reynolds Metals Company Ironing press laminar flow lubrication ring
US6598451B2 (en) 2001-11-02 2003-07-29 Sequa Can Machinery, Inc. Internally cooled tool pack
US20090218457A1 (en) * 2003-09-16 2009-09-03 Shinji Oishi Shell type needle roller bearing, support structure for compressor spindle, and support structure for piston pump driving portion
US8661686B2 (en) * 2003-09-16 2014-03-04 Ntn Corporation Method of manufacturing a shell type needle roller bearing including drawing and ironing operations
US20110114128A1 (en) * 2008-03-26 2011-05-19 Jfe Steel Corporation Ironing method and ironing apparatus
US9011609B2 (en) * 2008-03-26 2015-04-21 Jfe Steel Corporation Ironing method and ironing apparatus

Also Published As

Publication number Publication date
FR2083354A1 (enrdf_load_stackoverflow) 1971-12-17
JPS5130024B1 (enrdf_load_stackoverflow) 1976-08-28
SE362802B (enrdf_load_stackoverflow) 1973-12-27
DE2112866B2 (de) 1974-12-05
DE2112866C3 (de) 1975-07-10
FR2083354B1 (enrdf_load_stackoverflow) 1974-03-22
DE2112866A1 (de) 1971-10-28
GB1297716A (enrdf_load_stackoverflow) 1972-11-29

Similar Documents

Publication Publication Date Title
US3653249A (en) Drawn and ironed containers
US2624105A (en) Method of preparing and assembling antifriction bearings
US4360189A (en) Quench press
US2299105A (en) Method and apparatus for forging billets
US3214951A (en) Apparatus for rolling teeth on tubular elements
DE69605262T2 (de) Verfahren und Vorrichtung zur Einstellung des radialen Abstands zwischen zwei rotierenden Werkzeugen
US2726704A (en) Apparatus for sizing tubing
GB1426340A (en) Method of and apparatus for precision cold-forming rolling elements
US4208900A (en) Axle spindle forming apparatus
US2688400A (en) Extrusion scalping die
US2126912A (en) Antifriction bearing and its manufacture
US4573841A (en) Method of and apparatus for the finish shaping of profiled cylindrical holes
US2215943A (en) Method for the production of hollow bodies closed at one side by punching of four-edged blocks
US4100781A (en) Axle spindle forming method
US3345845A (en) Profiling methods and machines
US3769671A (en) Manufacture of rings for rolling bearings
US5138862A (en) Ram guidance system
US1619479A (en) Method of and apparatus for finishing cylindrical bearing surfaces
US3769825A (en) Swaging die
US4383427A (en) Apparatus for the machining of cylindrical surfaces
DE3120321C2 (de) Verfahren und Vorrichtung zum Entgraten und Putzen von gußeisernen Rohrmuffen
US1457579A (en) Method and apparatus for shaping and trimming brake drums
JPH0126801B2 (enrdf_load_stackoverflow)
US3073013A (en) Process for assembling railroad wheels and axles
US1701736A (en) Manufacture of rollers for roller bearings