EP0022211A1 - Procédé et appareil pour l'emboutissage d'un récipient à paroi mince à partir d'un flan - Google Patents

Procédé et appareil pour l'emboutissage d'un récipient à paroi mince à partir d'un flan Download PDF

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Publication number
EP0022211A1
EP0022211A1 EP80103562A EP80103562A EP0022211A1 EP 0022211 A1 EP0022211 A1 EP 0022211A1 EP 80103562 A EP80103562 A EP 80103562A EP 80103562 A EP80103562 A EP 80103562A EP 0022211 A1 EP0022211 A1 EP 0022211A1
Authority
EP
European Patent Office
Prior art keywords
ring
blank
bowl
down device
drawing ring
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.)
Ceased
Application number
EP80103562A
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German (de)
English (en)
Inventor
Rolf Herten
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.)
Blechwarenfabrik Gustav Gruss and Co
Original Assignee
Blechwarenfabrik Gustav Gruss and Co
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 Blechwarenfabrik Gustav Gruss and Co filed Critical Blechwarenfabrik Gustav Gruss and Co
Publication of EP0022211A1 publication Critical patent/EP0022211A1/fr
Ceased legal-status Critical Current

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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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B21D22/26—Deep-drawing for making peculiarly, e.g. irregularly, shaped articles

Definitions

  • the invention relates to a method for drawing a wrinkle-free thin-walled bowl or container from a sheet metal blank using a drawing ring (die), a holding-down device pressing the material of the blank against the drawing ring and a drawing punch which presses the blank into the opening of the drawing ring, whereby the material of the blank flowing out of the gap of the hold-down area is deformed in a first deformation zone surrounding the drawing die by sliding and flows over the inner edge of the drawing ring (drawing ring edge) adjoining the holding-down area into its opening.
  • the invention also relates to a device such as can preferably be used to carry out this method, and to a bowl or container which is produced by the method.
  • Position of bowls or containers is the non-cutting deformation by deep drawing under the pressure of a sheet metal blank to form a bowl, this deep drawing taking place in a narrowly defined drawing gap which is adapted to the sheet thickness and which already occurs at the start of the drawing process between the opening wall of the drawing ring and the outer lateral surface of the in the drawing ring immersed drawing die is formed.
  • a major difficulty in forming a circular conical bowl is therefore first of all that the generally flat sheet to be formed in a deep-drawing tool adapted to the desired bowl shape cannot be held in a form-fitting conical guide during the entire deformation process.
  • the deep-drawing process used to produce circular cylindrical cups cannot easily be used for forming bowls with a circular conical shape for the following reason.
  • the formation of the sheet after the flow through the first deformation zone in the hold-down area or after deflection over the inner edge of the drawing ring at a constant deflection angle of 90 when it flows into the tightly tolerated drawing gap has essentially ended the use of the known deep-drawing process for forming circular conical bowls, the shape of the bowl is only gradually realized when the sheet is deflected over the inner edge of the drawing ring, the angle of deflection of the sheet at the drawing ring radius continuously changing and the function of the drawing ring edge not at all or but would only take effect to a limited extent or too late.
  • the invention has for its object to provide a method of the type described above for pulling thin-walled conical cups, which avoids the disadvantages of known methods and devices and with which it is possible, with a simple design of the tools, thin-walled conical containers (cans) without essentially forming a blank from the blank in one process step.
  • a method of the type described at the outset is designed according to the invention in such a way that for drawing a conical bowl made of sheet metal, in particular sheet steel, with a peripheral wall which is at an angle of less than 60 °, preferably an angle of 3, with the central axis of the bowl 0 includes, in the case of rigid construction of both the die and the hold-down device and the drawing die, the holding-down device is subjected to a force which is a multiple of the force of the drawing die, so that the material flowing from the first deformation zone into the opening of the drawing ring is stretched while enlarging the sheet surface and, at the same time, reducing the sheet thickness in a free cavity serving as a second conical deformation zone and formed between the punch and the drawing ring (die) without being guided to the conical bowl.
  • the second deformation zone is located in the opening of the drawing ring, i.e. in the area between the drawing die and the wall of the opening of the drawing ring, the width of this second deformation zone in the direction perpendicular to the axis of the drawing die or in the direction perpendicular to the movement of the drawing die being substantially greater than the sheet thickness, at least at the beginning of the deformation.
  • this distance which the bottom of the drawing die has from the inside edge of the drawing ring, corresponds to approximately half the difference between the maximum and the minimum diameter of the cup to be produced.
  • the actual shaping or shaping depth of the blank to the desired cup shape takes place in the second deformation zone by stretching the sheet between the bottom of the drawing die and the inner edge of the drawing ring while enlarging the sheet surface and simultaneously reducing the sheet thickness, in one step entirely free cavity, in particular also without additional auxiliary elements, against which the material of the blank could be braced, which is continuously drawn from the sliding clamping in the hold-down area.
  • the "slide drawing in the first deformation zone” means in the process according to the invention that the material of the blank e.g. is so strongly clamped by the holding-down device that, due to the action of the drawing die, it can flow radially inwards into the first deformation zone, that is to say into the holding-down device area, but is thereby subjected to radial tensile stresses.
  • the "rigid design of the die, the holding-down device and the drawing die” means above all in the method according to the invention that d a ß these tool parts do not consist of several relatively movable individual parts or auxiliary elements, but preferably also means that in particular the hold-down device has no elastic means, such as springs, which prevent or were prevented by the hold-down device for clamping the blank force exerted on the blank in the hold-down area exceeds the force of the drawing punch many times over.
  • the "stretch drawing in the second deformation zone” means, in the process according to the invention, that the material flowing into the second deformation zone is stretched due to the clamping in this second deformation zone when the mold is deepened. In a preferred embodiment of the invention, this stretching - based on the material of the blank - is approximately 30%.
  • the clamping of the blank required for this sliding stretch-drawing is preferably carried out in the process according to the invention in the gap which is formed between the hold-down device and the drawing ring, that is to say the clamping force of the blank required for sliding-stretch drawing is achieved, for example, by a greatly increased, controllable holding-down force reached that exceeds the drawing punch force several times.
  • the surface of the holding-down device acting on the blank and the corresponding area of the drawing ring To be designed so that the gap between the holding-down device and the drawing ring has an annular section reduced by a few hundredths of a millimeter, which is then preferably provided on the inner edge of the holding-down area (gap between the holding-down device and the drawing ring) adjacent to the drawing ring opening or the edge of the drawing ring.
  • the gap between the holding-down device and the drawing ring has an annular section reduced by a few hundredths of a millimeter
  • the very high holding or clamping force exerted on the flowing sheet is a prerequisite for generating sufficient radial tensile stresses in the sheet for slide-stretching, which then transforms the tangential compressive stresses that arise during conical shape formation as a result of the diameter reduction into tangential tensile stresses which eliminates the "wrinkle formation of the second type" resulting from the excess material.
  • the conical shape formation is carried out in the inventive V out with continuous change of the inclination angle of the Napfwandung and under constant reduction in diameter of the whole, the forming wall surface, without any ZwangsfUhrung a form gleichigen AbstUtzung or without the aid of other additional tools auxiliary elements.
  • an increasing material hardening occurs accordingly, which has a stabilizing effect on the conical shape formation.
  • a change in sheet thickness occurs in such a way that the bowl produced has a sheet thickness which, starting from the bottom center of the bowl, changes radially outwards and along a generatrix of the bowl from the bottom to the upper opening edge in accordance with a curve or reduction curve which corresponds in shape to a hand sickle.
  • the sheet thickness is essentially constant, but is clearly below the sheet thickness of the starting material or blank used.
  • the sheet thickness decreases in the direction "cup base-Napföff n ung" initially and then again, wherein the sheet thickness at the upper edge of the cup of the plate thickness of the starting material approaches or the sheet thickness of the Rastflansches is substantially greater than the sheet thickness of the starting material.
  • the maximum weakening of the sheet in the case of cups which were produced by the process according to the invention is at the transition from the lower to the middle third of the cup wall height.
  • the hardness curve runs with the same tolerance, but in mirror image, but is then generally higher than the hardness of the starting material.
  • both surface sides of the sheet metal blank can be coated with a lubricating varnish based on phenol-epoxy resin.
  • This application which is only a few thousandths of a millimeter thick and can be carried out very evenly, is particularly suitable as lubrication, since it is firmly anchored to the sheet metal and is also extremely elastic.
  • a circular cylindrical bowl is used as the blank, the diameter of which is somewhat larger than the maximum diameter of the circular conical bowl to be produced.
  • This circular cylindrical blank is then either converted by pulling or preferably by pulling the faceplate and using the special features of the invention into the desired cup shape.
  • the first deformation zone lies in the bottom area of the circular cylindrical blank.
  • the pressure of the hold-down device is preferably about 2 to 3 times the pressure of the drawing die.
  • the apparatus preferably used for a transit through the method according to the invention is characterized in that at least one concentrically provided with a rigid formation of drawing ring, drawing punch and holding-down device to the axis of the drawing punch and outside the opening of the Z i ehringes lying Abstreckspalt through which the material of the blank flows to the drawing ring under deformation by slide drawing or by ironing slide drawing.
  • the ironing gap is formed, for example, between the end surface of the hold-down device and the end surface of the drawing ring.
  • an ironing gap which surrounds the drawing ring or the holding-down device can be provided. In both cases, this ironing gap results in a reduction in the sheet thickness of the wall of the blank, which, for example, has the shape of a circular cylindrical bowl. The blank can be deformed into the desired circular bowl shape both in the faceplate as well as in the subsequent movement.
  • the method according to the invention and the device according to the invention are characterized by a particularly simple design of the tools and by an optimal use of material.
  • the circular conical cups produced with the method according to the invention or with the device according to the invention are free from undesired folds.
  • a drawing ring 1 is shown in section, which has an inner opening 2 which tapers conically downwards.
  • a pulling punch 3 can be inserted into this opening 2 from above, which likewise tapers conically or in the shape of a truncated cone towards its bottom surface 3 '.
  • the inner wall of the opening 2 and the frustoconical jacket wall of the drawing die 3 are matched to one another in such a way that both have the same inclination with respect to the axis of the drawing die 3 and the opening 2.
  • a hold-down device 4 in the form of a ring is arranged concentrically with the drawing die, this holding-down device, which, like the drawing die 3, rests relative to the drawing ring.
  • the blank 5 which is made of sheet metal, has the shape of a flat (low) circular cylindrical bowl in the embodiment shown.
  • the diameter of this circular-cylindrical bowl is larger than the maximum diameter of the finished circular-conical bowl 6, the rest of the inside diameter of the blank 5 being chosen so that this blank lies with its cylindrical peripheral wall 5 'on the outer peripheral wall of the drawing ring.
  • Fig. La shows the initial shape on the left, in which the tool parts and the blank are at the beginning of the drawing process.
  • the hold-down device is first pressed with its lower end face 4 'according to arrow A against the bottom of the circular cylindrical blank 5, whereby the blank in the outer bottom area between the lower end face 4' of the hold-down device 4 and the upper edge of the pulling ring 1 is clamped.
  • the clamping takes place in such a way or with such a force that when the drawing punch 3 is moved down in the direction of the arrow B that the material of the blank is stretched in the gap between the holding-down device 4 and the drawing ring 1 over the inner edge 7 of the drawing ring 1 is pulled into the opening 2 of this drawing ring.
  • FIGS. 1 a and 1 b each show different intermediate shapes on the right and left, which the tool parts and the blank 5 have when pulling or when the punch 3 penetrates into the pull ring 1 until the punch 3 has completely entered the opening 2 of the pull ring 1 and the tool parts thus have the end position shown in Fig. 1b to the right of the center line.
  • the drawing die 3 lies with its truncated cone-shaped outer surface against the inner surface of the finished bowl 6, while the outer surface of the bowl lies against the wall of the opening 2.
  • the drawing punch 3 and the hold-down device 4 are withdrawn, so that the bowl 6 can then be removed from the drawing ring 1.
  • 1a and 1b in particular also show that the actual depth of the blank 5 to the bowl 6 takes place in a free cavity between the punch 3 and the drawing ring 1 without inevitable guidance of the material, and that there is also the angle that the conical peripheral wall of the blank includes during the drawing process with the axis of the punch 3 or with the axis of symmetry of the finished bowl 6, constantly changing.
  • 1a and 1b show that the material of the blank 5 or the material of the cylindrical peripheral wall 5 'of this blank flows continuously through the gap between the holding-down device 4 and the drawing ring 1 during the depth of the cup 6. It can also be seen from Figs.
  • the depth of the cup 6 is formed from the blank 5 in a manner which can also be referred to as an "inverted pull", i.e. during drawing or mold depths, the bottom surface of the circular-cylindrical blank 5 is moved inwards, i.e. printed into the space enclosed by the peripheral wall 5 '.
  • the drawing tool in the embodiment shown in FIGS. 1a and 1b consists of a drawing ring with a conical opening and out a drawing punch with a conical outer surface
  • a drawing punch with a circular cylindrical outer surface and with a diameter that corresponds to the smallest diameter of the bowl 6 or the diameter of the closed bottom of the bowl 6.
  • a drawing ring instead of a drawing ring with an opening that narrows conically downwards, the opening of which has an essentially constant diameter over the entire height of the drawing ring.
  • FIG. 2 shows in section a device or a drawing tool for pulling the bowl 6 out of the blank 5, this drawing tool again consisting of the drawing ring 1, the drawing punch 3 and the ring-shaped hold-down device 4.
  • the initial shape, i.e. the left, of the center or symmetry axis is again the state that the parts assume at the beginning of the drawing process, while the end shape or the condition that the parts assume at the end of the drawing process is shown to the right of the center line.
  • the lower end face of the hold-down device 4 and the upper end face of the drawing ring are not planar, but rather step-shaped, in such a way that on the inner edge 7 of the opening 2 there is an over the upper end face projecting annular bead 8 is provided, to which an annular depression 9 is assigned on the lower end face of the annular hold-down device 4.
  • the height of the annular bead 8 and / or the depth of the annular recess 9 are chosen so that when the downholder 4 is pressed against the blank 5, the width of the gap between the downholder 4 and the drawing ring laterally from the annular bead or the annular recess of the thickness the material of the blank 5 corresponds, while the width of the Sp a l-th between the retainer 4 and draw ring 1 in the region of the annular bead 8 or in the region of the annular recess 9 is slightly smaller than the thickness of the material of the blank 5.
  • the gap between the drawing ring 1 and the hold-down device 4 has an approximately S-shaped profile through the annular bead 8 or through the annular recess. This means that at the beginning of the drawing process or when the holding-down device 4 is pressed against the blank 5, the bottom of this blank is deformed at least in a partial area in a so-called "shortened first pull" upwards or in the opposite direction to the direction of action of the punch 3.
  • the depth of the blank 5 to the bowl 6 is completed when the outer surface of the punch 3 bears against the inner surface and the peripheral wall of the opening 2 against the outer surface of the finished bowl 6.
  • the annular recess 9 has a flat bottom surface, the annular recess 9 being open towards the inner surface of the hold-down device 4 which is close to the drawing punch 3.
  • the annular bead 8 is provided in the immediate vicinity of the inner drawing ring edge 7 or in the immediate vicinity of the opening 2 of the drawing ring 1. Since the height of the annular bead 8 is slightly greater than the depth of the associated annular recess 9, the blank remains in the area outside when the blank 5 is missing and when the holding-down device 4 lies against the drawing ring 1 or when the holding-down device 4 rests against the ring bead 8 against the bottom of the recess 9 of the annular bead 8 between the holding-down device 4 and the drawing ring 1, a gap.
  • the substantially flat bottom surface of the recess 9 preferably forms an angle of approximately 90 ° with the axis of the drawing die.
  • the end faces of the drawing ring 1 and the hold-down device 4 are each curved in the transition area to the ring bead 8 and in the transition area to the recess 9, the curvature in the transition area to the ring bead 8 having a radius of curvature R which is greater than the radius of curvature r of the curvature in the transition area annular recess 9.
  • 3a and 3b show a further development of the tool according to FIG. 2 in different working phases, specifically in FIG. 3a, to the left of the central axis in the initial form and in FIG. 4b to the right of the central axis in the final form, while the 3a and 3b show two intermediate forms to the right of the center line and to the left of the center line.
  • the tool shown in FIGS. 3a and 3b corresponds to the tool according to FIG. 2 with regard to the formal configuration of the drawing ring 1, the drawing die 3 and the hold-down device 4, however, the tool according to FIGS. 3a and 3b also has one in addition to these tool parts Ironing ring 13, which is arranged concentrically to the punch 3 and hold-down 4 and surrounds the latter.
  • the ironing ring 13 can be displaced axially downward in accordance with the arrow C, specifically from an initial position in which the lower annular end edge of the ironing ring 13 lies above the upper annular end edge of the drawing ring 1, into a lower end position in which the lower end edge of the ironing ring 13 laterally from the peripheral wall of the drawing ring 1.
  • the otherwise circular-cylindrical or sleeve-shaped ironing ring 13 has, in the vicinity of its lower end edge, an annular bead 14 which projects into the interior of the ring and which has a flank 15 which runs obliquely to the axis of the ironing ring 13 towards the lower end side.
  • the inner diameter of the ironing ring 13 is selected so that when the ironing ring 13 is depressed, the distance between the bead 14 and the outer surface of the drawing ring 1 is smaller than the thickness of the material of the blank 5.
  • FIG. 4 shows an embodiment of a drawing tool in which the annular hold-down device 16 is attached to it lower edge has a projection 17 which surrounds the peripheral surface of the drawing ring 10 in an annular manner and forms an ironing gap between its annular bead 18 and the peripheral wall of the drawing ring 10.
  • the drawing punch 3 again has a truncated cone-shaped surface, while the drawing ring 10 has a circular-cylindrical opening 12.
  • the tools can still be controlled in such a way that the hold-down device 4 or 16 is only finally pressed against the blank when the drawing punch 3 is already partially in the opening 2 or 12 of the pull ring 10 or 1 has moved into it.
  • the material of the blank 5 is held by the ironing ring 13, which is already moved downwards, or by the section 17.
  • the drawing ring 10 with a circular-cylindrical opening 12 is particularly suitable for accelerated ejection of the finished bowl 6 from the drawing press or from the tool.
  • the finished bowl 6 can be removed by the punch 3 immediately after the drawing process by means of the drawing punch 3 if there is no remaining flange 6 ' lower, open end of the pull ring 10 are ejected (Fig. 4).
  • This accelerated ejection of the finished bowl 6 is possible because in the method according to the invention a form-fitting guidance of the material is not necessary during the drawing and accordingly a drawing ring 10 with a circular cylindrical opening 12 can be used.
  • the drawing die 3, the hold-down device 4 or 16 and the possibly additionally provided ironing ring 13 can be moved relative to the drawing ring.
  • devices are also conceivable in which other tool elements are arranged or movable in a stationary manner.
  • FIG. 7 shows a tool which consists of the stationary drawing ring 10 and of the circular-cylindrical drawing punch 11 which can be moved in the longitudinal direction. Furthermore, the tool has the annular hold-down device 4. While the punch 11 and the hold-down device 4 are moved downward in the direction of the arrows A and B when the blank 5 is deformed into the circular-conical bowl 6, ie in the direction of the axis of the Drawing punch 11, the tool shown in FIG. 7 has an ironing ring 19 which is arranged concentrically to the axis of the drawing punch 11. This ironing ring 19 is located above the upper end face of the drawing ring 10, but below the holding-down device 4 or the drawing die 11, when these parts are in their starting position shown at the top left in FIG. 7. The diameter of the opening of the ironing ring 19 is selected so that an annular bead 20 provided on the wall of this opening forms an annular ironing gap with the cylindrical peripheral surface of the holding-down device 4.
  • the blank 5 which in turn has the shape of a circular cylindrical bowl, is inserted into the tool in such a way that the peripheral wall 5 'of the blank is directed upwards, i.e.
  • a first phase the drawing punch 11 and the blank holder 4 / blank 5 carrying the blank 5 move downwards together in the direction of the arrows A and B, wherein the holding-down device 4 and drawing punch 11 move through the opening of the ironing ring 19.
  • the material of the peripheral wall 5 'of the blank 5 is ironed.
  • the first phase is essentially completed when the bottom of the cup-shaped blank 5 against the drawing ring or against the Bead 8 comes to rest.
  • the one-piece, conical cups 6 produced by the method according to the invention can preferably be used as packaging material for bulk goods or as containers or cans for packing goods with atmospheric pressure or with negative or positive pressure.
  • the bowls 6 can be stacked deeply in a particularly advantageous manner and therefore save space, which results in a low storage and transport volume.
  • FIG. 6 shows the characteristic profile of the wall thickness of a conical cup 6, which was produced by the method according to the invention without additional drawing by an additional drawing ring.
  • the respective wall or sheet thickness of the conical bowl 6 is plotted on the abscissa and the distance that a certain point is from the center of the floor or from the edge of the floor of the finished bowl is plotted on the ordinate. 6, it was further assumed that the starting material or blank 5 has a sheet thickness of 0.35 mm.
  • the bowl 6 has in its base part or along a radial line starting from the center of the base a substantially uniform sheet thickness, which is 0.33 mm, i.e. corresponds to approximately 94% of the sheet thickness of the starting material.
  • the sheet thickness increases to 0.34 mm, ie to about 97% of the original sheet thickness, the maximum sheet thickness of 0.34 mm in this area is achieved with a bowl height of 10 mm, which corresponds to a standardized bowl height of about 8% based on the total height of the bowl of 120 mm.
  • the wall thickness or sheet thickness initially decreases in the direction of the upper rim of the bowl, the minimum sheet thickness of 0.285 mm being achieved with a bowl height of 50 mm or with a standardized bowl height of 41%. This minimum is therefore approximately at the transition point between the first and the second third of the bowl height.
  • the wall or sheet thickness increases again and approaches the value of 0.35 mm at the top of the bowl.
  • the wall or sheet thickness is 0.335 mm or 95.7% of the sheet thickness of the starting material.
  • the sheet thickness increases linearly and reaches a value of 0.41 mm, i.e. 117% of the sheet thickness of the starting material.
  • the crescent shape shown in FIG. 6 is typical of the circular conical cups produced by the method according to the invention.
  • the opening 12 in the drawing ring 10 such that this opening slightly deviates from the side of the drawing ring 10 facing away from the hold-down device 4 or 16 expanded, so that the finished bowl can be ejected particularly easily downwards without disability.
  • FIGS. 1-5 Since the structure of drawing presses and the control of such drawing presses is generally known, only the tool parts (drawing ring, hold-down device and drawing punch) are shown in FIGS. 1-5, which are characteristic of the method according to the invention. These tool parts can be used with conventional mechanical or hydraulic drawing presses be used.
  • FIGS. 1 to 5 show the state of the tool parts that they assume shortly before the depth of the mold. Of course, the tool parts are moved further apart for the introduction of the blank or for the removal of the finished bowl into the device.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
EP80103562A 1979-07-10 1980-06-24 Procédé et appareil pour l'emboutissage d'un récipient à paroi mince à partir d'un flan Ceased EP0022211A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2927755 1979-07-10
DE2927755A DE2927755C2 (de) 1979-07-10 1979-07-10 Verfahren zum Ziehen eines dünnwandigen konischen Behälters sowie Vorrichtung zum Durchführen des Verfahrens

Publications (1)

Publication Number Publication Date
EP0022211A1 true EP0022211A1 (fr) 1981-01-14

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Application Number Title Priority Date Filing Date
EP80103562A Ceased EP0022211A1 (fr) 1979-07-10 1980-06-24 Procédé et appareil pour l'emboutissage d'un récipient à paroi mince à partir d'un flan

Country Status (5)

Country Link
US (1) US4386514A (fr)
EP (1) EP0022211A1 (fr)
JP (1) JPS5619932A (fr)
DE (1) DE2927755C2 (fr)
DK (1) DK295480A (fr)

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DE19533598A1 (de) * 1995-09-11 1997-03-13 Alcan Gmbh Verfahren zum Ziehen eines Behälters aus flächigem Material
CN106862396A (zh) * 2017-04-24 2017-06-20 浙江申吉钛业股份有限公司 精密冲压件成形模具及方法

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JP2006035225A (ja) * 2004-07-22 2006-02-09 Jfe Steel Kk 傾斜側壁部を持つ金属製容器の成形方法
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DE392348C (de) * 1920-10-01 1924-03-20 Erzgebirgsche Schnittwerkzeug Verfahren und Vorrichtung zum Ziehen konischer Gegenstaende, wie Lampenschirme u. dgl.
US2761406A (en) * 1954-05-25 1956-09-04 Michael S Schnell Die for drawing sheet material
US3163142A (en) * 1961-06-30 1964-12-29 Fred W Buhrke Die assembly
US3302441A (en) * 1963-07-09 1967-02-07 Continental Can Co Die for deep drawn tapered container
DE1652633A1 (de) * 1968-01-26 1972-01-05 Nat Steel Corp Verfahren und Vorrichtung zur Herstellung von Behaelterkoerpern aus Blech durch Kaltziehen
US3580041A (en) * 1968-02-05 1971-05-25 Universal Alufolien Verfahren Die assembly
DE2450624A1 (de) * 1973-10-30 1975-05-07 Raciborska Fabryka Kotlow Rafa Vorrichtung zum pressen von tiefen, duennwandigen behaelterboeden mit grossen durchmessern
DE2451511A1 (de) * 1974-10-30 1976-05-06 Friedrich Wilhelm Ing G Bracht Verfahren und vorrichtung zum tiefziehen von behaeltern aus metall- oder verbundfolie
US4051707A (en) * 1976-02-02 1977-10-04 Kraft, Inc. Method and apparatus for making drawn containers
FR2340151A1 (fr) * 1976-02-03 1977-09-02 Haustrups Fabriker As Procede et outillage pour la production par emboutissage de boites coniques en tole mince
DD125649A1 (fr) * 1976-04-01 1977-05-11
DE2727174A1 (de) * 1977-06-15 1978-12-21 Aluminiumwerke Ag Rorschach Tiefziehverfahren zur herstellung eines aluminiumbehaelters

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DE19533598A1 (de) * 1995-09-11 1997-03-13 Alcan Gmbh Verfahren zum Ziehen eines Behälters aus flächigem Material
CN106862396A (zh) * 2017-04-24 2017-06-20 浙江申吉钛业股份有限公司 精密冲压件成形模具及方法

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DE2927755A1 (de) 1981-01-15
DK295480A (da) 1981-01-11

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